version bump

Use `dynamicCast()` to cast `fetchedObjects` to `[T]?` without checking the type.

.gitmodules

@@ -1,3 +0,0 @@
-[submodule "Carthage/Checkouts/GCDKit"]
-	path = Carthage/Checkouts/GCDKit
-	url = https://github.com/JohnEstropia/GCDKit.git

.swift-version

@@ -0,0 +1 @@
+3.0.1

.travis.yml

@@ -1,5 +1,5 @@
 language: objective-c
-osx_image: xcode7.3
+osx_image: xcode8.2
 sudo: false
 git:
   submodules: false
@@ -10,20 +10,21 @@ env:
   - LC_CTYPE=en_US.UTF-8
   - LANG=en_US.UTF-8
   matrix:
-    - DESTINATION="OS=9.3,name=iPhone 6s"          SCHEME="CoreStore iOS"     SDK=iphonesimulator9.3  RUN_TESTS="YES" POD_LINT="NO"
-    - DESTINATION="OS=9.0,name=iPhone 6 Plus"      SCHEME="CoreStore iOS"     SDK=iphonesimulator9.3  RUN_TESTS="YES" POD_LINT="NO"
-    - DESTINATION="OS=8.4,name=iPhone 6"           SCHEME="CoreStore iOS"     SDK=iphonesimulator9.3  RUN_TESTS="YES" POD_LINT="NO"
-    - DESTINATION="OS=8.3,name=iPhone 5S"          SCHEME="CoreStore iOS"     SDK=iphonesimulator9.3  RUN_TESTS="YES" POD_LINT="NO"
-    - DESTINATION="OS=8.2,name=iPhone 5"           SCHEME="CoreStore iOS"     SDK=iphonesimulator9.3  RUN_TESTS="YES" POD_LINT="NO"
-    - DESTINATION="OS=8.1,name=iPhone 4S"          SCHEME="CoreStore iOS"     SDK=iphonesimulator9.3  RUN_TESTS="YES" POD_LINT="YES"
-    - DESTINATION="OS=8.1,name=iPhone 4S"          SCHEME="CoreStore iOS7"    SDK=iphonesimulator9.3  RUN_TESTS="YES" POD_LINT="YES"
-    - DESTINATION="arch=x86_64"                    SCHEME="CoreStore OSX"     SDK=macosx10.11         RUN_TESTS="YES" POD_LINT="NO"
-    - DESTINATION="OS=2.2,name=Apple Watch - 42mm" SCHEME="CoreStore watchOS" SDK=watchsimulator2.2   RUN_TESTS="NO"  POD_LINT="NO"
-    - DESTINATION="OS=9.2,name=Apple TV 1080p"     SCHEME="CoreStore tvOS"    SDK=appletvsimulator9.2 RUN_TESTS="YES" POD_LINT="NO"
+    - DESTINATION="OS=10.1,name=iPhone 7"          SCHEME="CoreStore iOS"     SDK=iphonesimulator10.2  RUN_TESTS="YES" POD_LINT="NO"
+    - DESTINATION="OS=9.0,name=iPhone 6 Plus"      SCHEME="CoreStore iOS"     SDK=iphonesimulator10.2  RUN_TESTS="YES" POD_LINT="NO"
+    - DESTINATION="OS=8.4,name=iPhone 6"           SCHEME="CoreStore iOS"     SDK=iphonesimulator10.2  RUN_TESTS="YES" POD_LINT="NO"
+    - DESTINATION="OS=8.3,name=iPhone 5S"          SCHEME="CoreStore iOS"     SDK=iphonesimulator10.2  RUN_TESTS="YES" POD_LINT="NO"
+    - DESTINATION="OS=8.3,name=iPhone 5"           SCHEME="CoreStore iOS"     SDK=iphonesimulator10.2  RUN_TESTS="YES" POD_LINT="NO"
+    - DESTINATION="OS=8.3,name=iPhone 4S"          SCHEME="CoreStore iOS"     SDK=iphonesimulator10.2  RUN_TESTS="YES" POD_LINT="NO"
+    - DESTINATION="arch=x86_64"                    SCHEME="CoreStore OSX"     SDK=macosx10.12          RUN_TESTS="YES" POD_LINT="NO"
+    - DESTINATION="OS=3.1,name=Apple Watch - 42mm" SCHEME="CoreStore watchOS" SDK=watchsimulator3.1    RUN_TESTS="NO"  POD_LINT="NO"
+    - DESTINATION="OS=2.2,name=Apple Watch - 42mm" SCHEME="CoreStore watchOS" SDK=watchsimulator3.1    RUN_TESTS="NO"  POD_LINT="NO"
+    - DESTINATION="OS=10.1,name=Apple TV 1080p"    SCHEME="CoreStore tvOS"    SDK=appletvsimulator10.1 RUN_TESTS="YES" POD_LINT="NO"
+    - DESTINATION="OS=9.2,name=Apple TV 1080p"     SCHEME="CoreStore tvOS"    SDK=appletvsimulator10.1 RUN_TESTS="YES" POD_LINT="NO"
 before_install:
   - gem install cocoapods --no-rdoc --no-ri --no-document --quiet
   - gem install xcpretty --no-rdoc --no-ri --no-document --quiet
-  - curl -OlL "https://github.com/Carthage/Carthage/releases/download/0.11/Carthage.pkg"
+  - curl -OlL "https://github.com/Carthage/Carthage/releases/download/0.18/Carthage.pkg"
   - sudo installer -pkg "Carthage.pkg" -target /
   - rm "Carthage.pkg"
 before_script:
@@ -36,8 +37,8 @@ script:
       xcodebuild -workspace CoreStore.xcworkspace -scheme "$SCHEME" -sdk "$SDK" -destination "$DESTINATION" -configuration Debug ONLY_ACTIVE_ARCH=NO clean test | xcpretty -c;
       xcodebuild -workspace CoreStore.xcworkspace -scheme "$SCHEME" -sdk "$SDK" -destination "$DESTINATION" -configuration Release ONLY_ACTIVE_ARCH=NO clean test | xcpretty -c;
     fi
-  - xcodebuild -workspace "CoreStore.xcworkspace" -scheme "CoreStore iOS" -sdk "iphonesimulator9.3" -destination "OS=9.3,name=iPhone 6s" -configuration Debug ONLY_ACTIVE_ARCH=NO clean test | xcpretty -c;
-  - xcodebuild -workspace "CoreStore.xcworkspace" -scheme "CoreStore iOS" -sdk "iphonesimulator9.3" -destination "OS=9.3,name=iPhone 6s" -configuration Release ONLY_ACTIVE_ARCH=NO clean test | xcpretty -c;
+  - xcodebuild -workspace "CoreStore.xcworkspace" -scheme "CoreStore iOS" -sdk "iphonesimulator10.2" -destination "OS=10.1,name=iPhone 7" -configuration Debug ONLY_ACTIVE_ARCH=NO clean test | xcpretty -c;
+  - xcodebuild -workspace "CoreStore.xcworkspace" -scheme "CoreStore iOS" -sdk "iphonesimulator10.2" -destination "OS=10.1,name=iPhone 7" -configuration Release ONLY_ACTIVE_ARCH=NO clean test | xcpretty -c;
   - if [ $POD_LINT == "YES" ]; then
       pod lib lint --quick;
     fi

Cartfile

@@ -1 +0,0 @@
-github "JohnEstropia/GCDKit" == 1.2.6

Cartfile.resolved

@@ -1 +0,0 @@
-github "JohnEstropia/GCDKit" "1.2.6"

CoreStore.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
     s.name = "CoreStore"
-    s.version = "2.0.3"
+    s.version = "3.1.0"
     s.license = "MIT"
     s.summary = "Unleashing the real power of Core Data with the elegance and safety of Swift"
     s.homepage = "https://github.com/JohnEstropia/CoreStore"
@@ -16,8 +16,7 @@ Pod::Spec.new do |s|
     s.public_header_files = "Sources/**/*.h"
     s.frameworks = "Foundation", "CoreData"
     s.requires_arc = true
-    s.pod_target_xcconfig = { 'OTHER_SWIFT_FLAGS' => '-D USE_FRAMEWORKS',
+    s.pod_target_xcconfig = { 'OTHER_SWIFT_FLAGS[config=Debug]' => '-D USE_FRAMEWORKS -D DEBUG',
+                              'OTHER_SWIFT_FLAGS[config=Release]' => '-D USE_FRAMEWORKS',
                               'GCC_PREPROCESSOR_DEFINITIONS' => 'USE_FRAMEWORKS=1' }
-    
-    s.dependency "GCDKit", "1.2.6"
-end
+end

CoreStore.xcodeproj/project.xcworkspace/xcshareddata/CoreStore.xcscmblueprint

@@ -10,10 +10,10 @@
   "DVTSourceControlWorkspaceBlueprintIdentifierKey" : "F347F55F-7F5C-4476-9148-6E902F06E4AD",
   "DVTSourceControlWorkspaceBlueprintWorkingCopyPathsKey" : {
     "8B2E522D57154DFA93A06982C36315ECBEA4FA97" : "CoreStoreLibraries\/GCDKit",
-    "4B60F1BCB491FF717C56441AE7783C74F417BE48" : "CoreStore"
+    "4B60F1BCB491FF717C56441AE7783C74F417BE48" : "CoreStore\/"
   },
   "DVTSourceControlWorkspaceBlueprintNameKey" : "CoreStore",
-  "DVTSourceControlWorkspaceBlueprintVersion" : 203,
+  "DVTSourceControlWorkspaceBlueprintVersion" : 204,
   "DVTSourceControlWorkspaceBlueprintRelativePathToProjectKey" : "CoreStore.xcodeproj",
   "DVTSourceControlWorkspaceBlueprintRemoteRepositoriesKey" : [
     {

CoreStore.xcodeproj/xcshareddata/xcschemes/CoreStore OSX.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0710"
+   LastUpgradeVersion = "0800"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"

CoreStore.xcodeproj/xcshareddata/xcschemes/CoreStore iOS.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0700"
+   LastUpgradeVersion = "0800"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
@@ -11,8 +11,7 @@
             buildForRunning = "YES"
             buildForProfiling = "YES"
             buildForArchiving = "YES"
-            buildForAnalyzing = "YES"
-            hideIssues = "NO">
+            buildForAnalyzing = "YES">
             <BuildableReference
                BuildableIdentifier = "primary"
                BlueprintIdentifier = "2F03A52F19C5C6DA005002A5"
@@ -26,8 +25,7 @@
             buildForRunning = "NO"
             buildForProfiling = "NO"
             buildForArchiving = "NO"
-            buildForAnalyzing = "NO"
-            hideIssues = "NO">
+            buildForAnalyzing = "NO">
             <BuildableReference
                BuildableIdentifier = "primary"
                BlueprintIdentifier = "2F03A53A19C5C6DA005002A5"

CoreStore.xcodeproj/xcshareddata/xcschemes/CoreStore tvOS.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0720"
+   LastUpgradeVersion = "0800"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"

CoreStore.xcodeproj/xcshareddata/xcschemes/CoreStore watchOS.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0700"
+   LastUpgradeVersion = "0800"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"

CoreStore.xcworkspace/contents.xcworkspacedata

@@ -7,7 +7,4 @@
    <FileRef
       location = "group:CoreStoreDemo/CoreStoreDemo.xcodeproj">
    </FileRef>
-   <FileRef
-      location = "group:Carthage/Checkouts/GCDKit/GCDKit.xcodeproj">
-   </FileRef>
 </Workspace>

CoreStoreDemo/CoreStoreDemo.xcodeproj/project.pbxproj

@@ -36,8 +36,6 @@
 		B569651C1B30889A0075EE4A /* QueryingResultsViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = B569651B1B30889A0075EE4A /* QueryingResultsViewController.swift */; };
 		B56965291B3582D30075EE4A /* MigrationDemo.xcdatamodeld in Sources */ = {isa = PBXBuildFile; fileRef = B56965271B3582D30075EE4A /* MigrationDemo.xcdatamodeld */; };
 		B5E599321B5240F50084BD5F /* OrganismTableViewCell.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5E599311B5240F50084BD5F /* OrganismTableViewCell.swift */; };
-		B5E89ACD1C52929C003B04A9 /* GCDKit.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = B5BDC9241C202429008147CD /* GCDKit.framework */; };
-		B5E89ACE1C52929C003B04A9 /* GCDKit.framework in Embed Frameworks */ = {isa = PBXBuildFile; fileRef = B5BDC9241C202429008147CD /* GCDKit.framework */; settings = {ATTRIBUTES = (CodeSignOnCopy, RemoveHeadersOnCopy, ); }; };
 		B5E89AD01C5292A2003B04A9 /* CoreStore.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = B5BDC9211C202429008147CD /* CoreStore.framework */; };
 		B5E89AD11C5292A2003B04A9 /* CoreStore.framework in Embed Frameworks */ = {isa = PBXBuildFile; fileRef = B5BDC9211C202429008147CD /* CoreStore.framework */; settings = {ATTRIBUTES = (CodeSignOnCopy, RemoveHeadersOnCopy, ); }; };
 		B5EE25851B36E23C0000406B /* OrganismV1.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5EE25841B36E23C0000406B /* OrganismV1.swift */; };
@@ -54,7 +52,6 @@
 			dstPath = "";
 			dstSubfolderSpec = 10;
 			files = (
-				B5E89ACE1C52929C003B04A9 /* GCDKit.framework in Embed Frameworks */,
 				B5E89AD11C5292A2003B04A9 /* CoreStore.framework in Embed Frameworks */,
 			);
 			name = "Embed Frameworks";
@@ -94,7 +91,6 @@
 		B569651B1B30889A0075EE4A /* QueryingResultsViewController.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = QueryingResultsViewController.swift; sourceTree = "<group>"; };
 		B56965281B3582D30075EE4A /* MigrationDemo.xcdatamodel */ = {isa = PBXFileReference; lastKnownFileType = wrapper.xcdatamodel; path = MigrationDemo.xcdatamodel; sourceTree = "<group>"; };
 		B5BDC9211C202429008147CD /* CoreStore.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; path = CoreStore.framework; sourceTree = BUILT_PRODUCTS_DIR; };
-		B5BDC9241C202429008147CD /* GCDKit.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; path = GCDKit.framework; sourceTree = BUILT_PRODUCTS_DIR; };
 		B5E599311B5240F50084BD5F /* OrganismTableViewCell.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = OrganismTableViewCell.swift; path = "CoreStoreDemo/MIgrations Demo/OrganismTableViewCell.swift"; sourceTree = SOURCE_ROOT; };
 		B5EE25801B36E1B00000406B /* MigrationDemoV2.xcdatamodel */ = {isa = PBXFileReference; lastKnownFileType = wrapper.xcdatamodel; path = MigrationDemoV2.xcdatamodel; sourceTree = "<group>"; };
 		B5EE25841B36E23C0000406B /* OrganismV1.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = OrganismV1.swift; sourceTree = "<group>"; };
@@ -110,7 +106,6 @@
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
-				B5E89ACD1C52929C003B04A9 /* GCDKit.framework in Frameworks */,
 				B5E89AD01C5292A2003B04A9 /* CoreStore.framework in Frameworks */,
 				B52977E11B120F8A003D50A5 /* CoreLocation.framework in Frameworks */,
 				B52977DF1B120F83003D50A5 /* MapKit.framework in Frameworks */,
@@ -146,7 +141,6 @@
 			children = (
 				B52977E01B120F8A003D50A5 /* CoreLocation.framework */,
 				B5BDC9211C202429008147CD /* CoreStore.framework */,
-				B5BDC9241C202429008147CD /* GCDKit.framework */,
 				B52977DE1B120F83003D50A5 /* MapKit.framework */,
 			);
 			name = Frameworks;
@@ -272,11 +266,12 @@
 			isa = PBXProject;
 			attributes = {
 				LastSwiftUpdateCheck = 0700;
-				LastUpgradeCheck = 0700;
+				LastUpgradeCheck = 0800;
 				ORGANIZATIONNAME = "John Rommel Estropia";
 				TargetAttributes = {
 					B54AAD481AF4D26E00848AE0 = {
 						CreatedOnToolsVersion = 6.3;
+						LastSwiftMigration = 0800;
 					};
 				};
 			};
@@ -383,8 +378,10 @@
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
+				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_SUSPICIOUS_MOVE = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
@@ -428,8 +425,10 @@
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
+				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_SUSPICIOUS_MOVE = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
@@ -461,6 +460,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.johnestropia.corestore.demo;
 				PRODUCT_NAME = "$(TARGET_NAME)";
+				SWIFT_VERSION = 3.0;
 			};
 			name = Debug;
 		};
@@ -473,6 +473,8 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.johnestropia.corestore.demo;
 				PRODUCT_NAME = "$(TARGET_NAME)";
+				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
+				SWIFT_VERSION = 3.0;
 			};
 			name = Release;
 		};

CoreStoreDemo/CoreStoreDemo.xcodeproj/xcshareddata/xcschemes/CoreStoreDemo.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0700"
+   LastUpgradeVersion = "0800"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
@@ -14,24 +14,10 @@
             buildForAnalyzing = "YES">
             <BuildableReference
                BuildableIdentifier = "primary"
-               BlueprintIdentifier = "B5D9E2ED1CA2C317007A9D52"
-               BuildableName = "CoreStore_iOS7.framework"
-               BlueprintName = "CoreStore iOS7"
-               ReferencedContainer = "container:CoreStore.xcodeproj">
-            </BuildableReference>
-         </BuildActionEntry>
-         <BuildActionEntry
-            buildForTesting = "YES"
-            buildForRunning = "NO"
-            buildForProfiling = "NO"
-            buildForArchiving = "NO"
-            buildForAnalyzing = "NO">
-            <BuildableReference
-               BuildableIdentifier = "primary"
-               BlueprintIdentifier = "2F03A53A19C5C6DA005002A5"
-               BuildableName = "CoreStoreTests.xctest"
-               BlueprintName = "CoreStoreTests iOS"
-               ReferencedContainer = "container:CoreStore.xcodeproj">
+               BlueprintIdentifier = "B54AAD481AF4D26E00848AE0"
+               BuildableName = "CoreStoreDemo.app"
+               BlueprintName = "CoreStoreDemo"
+               ReferencedContainer = "container:CoreStoreDemo.xcodeproj">
             </BuildableReference>
          </BuildActionEntry>
       </BuildActionEntries>
@@ -42,24 +28,14 @@
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
       shouldUseLaunchSchemeArgsEnv = "YES">
       <Testables>
-         <TestableReference
-            skipped = "NO">
-            <BuildableReference
-               BuildableIdentifier = "primary"
-               BlueprintIdentifier = "2F03A53A19C5C6DA005002A5"
-               BuildableName = "CoreStoreTests.xctest"
-               BlueprintName = "CoreStoreTests iOS"
-               ReferencedContainer = "container:CoreStore.xcodeproj">
-            </BuildableReference>
-         </TestableReference>
       </Testables>
       <MacroExpansion>
          <BuildableReference
             BuildableIdentifier = "primary"
-            BlueprintIdentifier = "2F03A52F19C5C6DA005002A5"
-            BuildableName = "CoreStore.framework"
-            BlueprintName = "CoreStore iOS"
-            ReferencedContainer = "container:CoreStore.xcodeproj">
+            BlueprintIdentifier = "B54AAD481AF4D26E00848AE0"
+            BuildableName = "CoreStoreDemo.app"
+            BlueprintName = "CoreStoreDemo"
+            ReferencedContainer = "container:CoreStoreDemo.xcodeproj">
          </BuildableReference>
       </MacroExpansion>
       <AdditionalOptions>
@@ -75,15 +51,16 @@
       debugDocumentVersioning = "YES"
       debugServiceExtension = "internal"
       allowLocationSimulation = "YES">
-      <MacroExpansion>
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
          <BuildableReference
             BuildableIdentifier = "primary"
-            BlueprintIdentifier = "B5D9E2ED1CA2C317007A9D52"
-            BuildableName = "CoreStore_iOS7.framework"
-            BlueprintName = "CoreStore iOS7"
-            ReferencedContainer = "container:CoreStore.xcodeproj">
+            BlueprintIdentifier = "B54AAD481AF4D26E00848AE0"
+            BuildableName = "CoreStoreDemo.app"
+            BlueprintName = "CoreStoreDemo"
+            ReferencedContainer = "container:CoreStoreDemo.xcodeproj">
          </BuildableReference>
-      </MacroExpansion>
+      </BuildableProductRunnable>
       <AdditionalOptions>
       </AdditionalOptions>
    </LaunchAction>
@@ -93,9 +70,19 @@
       savedToolIdentifier = ""
       useCustomWorkingDirectory = "NO"
       debugDocumentVersioning = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "B54AAD481AF4D26E00848AE0"
+            BuildableName = "CoreStoreDemo.app"
+            BlueprintName = "CoreStoreDemo"
+            ReferencedContainer = "container:CoreStoreDemo.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
    </ProfileAction>
    <AnalyzeAction
-      buildConfiguration = "Release">
+      buildConfiguration = "Debug">
    </AnalyzeAction>
    <ArchiveAction
       buildConfiguration = "Release"

CoreStoreDemo/CoreStoreDemo/AppDelegate.swift

@@ -18,9 +18,9 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
     
     var window: UIWindow?
 
-    func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
+    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey : Any]? = nil) -> Bool {
         
-        application.statusBarStyle = .LightContent
+        application.statusBarStyle = .lightContent
         
         return true
     }

CoreStoreDemo/CoreStoreDemo/Fetching and Querying Demo/FetchingAndQueryingDemoViewController.swift

@@ -19,27 +19,27 @@ private struct Static {
             SQLiteStore(
                 fileName: "TimeZoneDemo.sqlite",
                 configuration: "FetchingAndQueryingDemo",
-                localStorageOptions: .RecreateStoreOnModelMismatch
+                localStorageOptions: .recreateStoreOnModelMismatch
             )
         )
     
-        dataStack.beginSynchronous { (transaction) -> Void in
+        _ = dataStack.beginSynchronous { (transaction) -> Void in
             
-            transaction.deleteAll(From(TimeZone))
+            transaction.deleteAll(From<TimeZone>())
             
-            for name in NSTimeZone.knownTimeZoneNames() {
+            for name in NSTimeZone.knownTimeZoneNames {
                 
                 let rawTimeZone = NSTimeZone(name: name)!
-                let cachedTimeZone = transaction.create(Into(TimeZone))
+                let cachedTimeZone = transaction.create(Into<TimeZone>())
                 
                 cachedTimeZone.name = rawTimeZone.name
                 cachedTimeZone.abbreviation = rawTimeZone.abbreviation ?? ""
                 cachedTimeZone.secondsFromGMT = Int32(rawTimeZone.secondsFromGMT)
-                cachedTimeZone.hasDaylightSavingTime = rawTimeZone.daylightSavingTime
+                cachedTimeZone.hasDaylightSavingTime = rawTimeZone.isDaylightSavingTime
                 cachedTimeZone.daylightSavingTimeOffset = rawTimeZone.daylightSavingTimeOffset
             }
             
-            transaction.commitAndWait()
+            _ = transaction.commitAndWait()
         }
         
         return dataStack
@@ -53,7 +53,7 @@ class FetchingAndQueryingDemoViewController: UIViewController, UITableViewDataSo
     
     // MARK: UIViewController
     
-    override func viewDidAppear(animated: Bool) {
+    override func viewDidAppear(_ animated: Bool) {
         
         super.viewDidAppear(animated)
         
@@ -67,27 +67,27 @@ class FetchingAndQueryingDemoViewController: UIViewController, UITableViewDataSo
         let alert = UIAlertController(
             title: "Fetch and Query Demo",
             message: "This demo shows how to execute fetches and queries.\n\nEach menu item executes and displays a preconfigured fetch/query.",
-            preferredStyle: .Alert
+            preferredStyle: .alert
         )
-        alert.addAction(UIAlertAction(title: "OK", style: .Cancel, handler: nil))
-        self.presentViewController(alert, animated: true, completion: nil)
+        alert.addAction(UIAlertAction(title: "OK", style: .cancel, handler: nil))
+        self.present(alert, animated: true, completion: nil)
     }
     
-    override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
+    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
         
-        super.prepareForSegue(segue, sender: sender)
+        super.prepare(for: segue, sender: sender)
         
-        if let indexPath = sender as? NSIndexPath {
+        if let indexPath = sender as? IndexPath {
             
-            switch segue.destinationViewController {
+            switch segue.destination {
                 
             case let controller as FetchingResultsViewController:
                 let item = self.fetchingItems[indexPath.row]
-                controller.setTimeZones(item.fetch(), title: item.title)
+                controller.set(timeZones: item.fetch(), title: item.title)
                 
             case let controller as QueryingResultsViewController:
                 let item = self.queryingItems[indexPath.row]
-                controller.setValue(item.query(), title: item.title)
+                controller.set(value: item.query(), title: item.title)
                 
             default:
                 break
@@ -98,14 +98,14 @@ class FetchingAndQueryingDemoViewController: UIViewController, UITableViewDataSo
     
     // MARK: UITableViewDataSource
     
-    func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
+    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
         
         switch self.segmentedControl?.selectedSegmentIndex {
             
-        case Section.Fetching.rawValue?:
+        case Section.fetching.rawValue?:
             return self.fetchingItems.count
             
-        case Section.Querying.rawValue?:
+        case Section.querying.rawValue?:
             return self.queryingItems.count
             
         default:
@@ -113,16 +113,16 @@ class FetchingAndQueryingDemoViewController: UIViewController, UITableViewDataSo
         }
     }
     
-    func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
+    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
         
-        let cell = tableView.dequeueReusableCellWithIdentifier("UITableViewCell")!
+        let cell = tableView.dequeueReusableCell(withIdentifier: "UITableViewCell")!
         
         switch self.segmentedControl?.selectedSegmentIndex {
             
-        case Section.Fetching.rawValue?:
+        case Section.fetching.rawValue?:
             cell.textLabel?.text = self.fetchingItems[indexPath.row].title
             
-        case Section.Querying.rawValue?:
+        case Section.querying.rawValue?:
             cell.textLabel?.text = self.queryingItems[indexPath.row].title
             
         default:
@@ -135,17 +135,17 @@ class FetchingAndQueryingDemoViewController: UIViewController, UITableViewDataSo
     
     // MARK: UITableViewDelegate
     
-    func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
+    func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
         
-        tableView.deselectRowAtIndexPath(indexPath, animated: true)
+        tableView.deselectRow(at: indexPath, animated: true)
         
         switch self.segmentedControl?.selectedSegmentIndex {
             
-        case Section.Fetching.rawValue?:
-            self.performSegueWithIdentifier("FetchingResultsViewController", sender: indexPath)
+        case Section.fetching.rawValue?:
+            self.performSegue(withIdentifier: "FetchingResultsViewController", sender: indexPath)
             
-        case Section.Querying.rawValue?:
-            self.performSegueWithIdentifier("QueryingResultsViewController", sender: indexPath)
+        case Section.querying.rawValue?:
+            self.performSegue(withIdentifier: "QueryingResultsViewController", sender: indexPath)
             
         default:
             break
@@ -157,8 +157,8 @@ class FetchingAndQueryingDemoViewController: UIViewController, UITableViewDataSo
     
     private enum Section: Int {
         
-        case Fetching
-        case Querying
+        case fetching
+        case querying
     }
     
     private let fetchingItems = [
@@ -167,8 +167,8 @@ class FetchingAndQueryingDemoViewController: UIViewController, UITableViewDataSo
             fetch: { () -> [TimeZone] in
                 
                 return Static.timeZonesStack.fetchAll(
-                    From(TimeZone),
-                    OrderBy(.Ascending("name"))
+                    From<TimeZone>(),
+                    OrderBy(.ascending(#keyPath(TimeZone.name)))
                 )!
             }
         ),
@@ -177,9 +177,9 @@ class FetchingAndQueryingDemoViewController: UIViewController, UITableViewDataSo
             fetch: { () -> [TimeZone] in
                 
                 return Static.timeZonesStack.fetchAll(
-                    From(TimeZone),
-                    Where("%K BEGINSWITH[c] %@", "name", "Asia"),
-                    OrderBy(.Ascending("secondsFromGMT"))
+                    From<TimeZone>(),
+                    Where("%K BEGINSWITH[c] %@", #keyPath(TimeZone.name), "Asia"),
+                    OrderBy(.ascending(#keyPath(TimeZone.secondsFromGMT)))
                 )!
             }
         ),
@@ -188,10 +188,10 @@ class FetchingAndQueryingDemoViewController: UIViewController, UITableViewDataSo
             fetch: { () -> [TimeZone] in
                 
                 return Static.timeZonesStack.fetchAll(
-                    From(TimeZone),
-                    Where("%K BEGINSWITH[c] %@", "name", "America")
-                        || Where("%K BEGINSWITH[c] %@", "name", "Europe"),
-                    OrderBy(.Ascending("secondsFromGMT"))
+                    From<TimeZone>(),
+                    Where("%K BEGINSWITH[c] %@", #keyPath(TimeZone.name), "America")
+                        || Where("%K BEGINSWITH[c] %@", #keyPath(TimeZone.name), "Europe"),
+                    OrderBy(.ascending(#keyPath(TimeZone.secondsFromGMT)))
                 )!
             }
         ),
@@ -200,9 +200,9 @@ class FetchingAndQueryingDemoViewController: UIViewController, UITableViewDataSo
             fetch: { () -> [TimeZone] in
                 
                 return Static.timeZonesStack.fetchAll(
-                    From(TimeZone),
-                    !Where("%K BEGINSWITH[c] %@", "name", "America"),
-                    OrderBy(.Ascending("secondsFromGMT"))
+                    From<TimeZone>(),
+                    !Where("%K BEGINSWITH[c] %@", #keyPath(TimeZone.name), "America"),
+                    OrderBy(.ascending(#keyPath(TimeZone.secondsFromGMT)))
                     )!
             }
         ),
@@ -211,9 +211,9 @@ class FetchingAndQueryingDemoViewController: UIViewController, UITableViewDataSo
             fetch: { () -> [TimeZone] in
                 
                 return Static.timeZonesStack.fetchAll(
-                    From(TimeZone),
+                    From<TimeZone>(),
                     Where("hasDaylightSavingTime", isEqualTo: true),
-                    OrderBy(.Ascending("name"))
+                    OrderBy(.ascending(#keyPath(TimeZone.name)))
                 )!
             }
         )
@@ -222,60 +222,60 @@ class FetchingAndQueryingDemoViewController: UIViewController, UITableViewDataSo
     private let queryingItems = [
         (
             title: "Number of Time Zones",
-            query: { () -> AnyObject in
+            query: { () -> Any in
                 
                 return Static.timeZonesStack.queryValue(
-                    From(TimeZone),
-                    Select<NSNumber>(.Count("name"))
+                    From<TimeZone>(),
+                    Select<NSNumber>(.count(#keyPath(TimeZone.name)))
                 )!
             }
         ),
         (
             title: "Abbreviation For Tokyo's Time Zone",
-            query: { () -> AnyObject in
+            query: { () -> Any in
                 
                 return Static.timeZonesStack.queryValue(
-                    From(TimeZone),
-                    Select<String>("abbreviation"),
-                    Where("%K ENDSWITH[c] %@", "name", "Tokyo")
+                    From<TimeZone>(),
+                    Select<String>(#keyPath(TimeZone.abbreviation)),
+                    Where("%K ENDSWITH[c] %@", #keyPath(TimeZone.name), "Tokyo")
                 )!
             }
         ),
         (
             title: "All Abbreviations",
-            query: { () -> AnyObject in
+            query: { () -> Any in
                 
                 return Static.timeZonesStack.queryAttributes(
-                    From(TimeZone),
-                    Select<NSDictionary>("name", "abbreviation"),
-                    OrderBy(.Ascending("name"))
+                    From<TimeZone>(),
+                    Select<NSDictionary>(#keyPath(TimeZone.name), #keyPath(TimeZone.abbreviation)),
+                    OrderBy(.ascending(#keyPath(TimeZone.name)))
                 )!
             }
         ),
         (
             title: "Number of Countries per Time Zone",
-            query: { () -> AnyObject in
+            query: { () -> Any in
                 
                 return Static.timeZonesStack.queryAttributes(
-                    From(TimeZone),
-                    Select<NSDictionary>(.Count("abbreviation"), "abbreviation"),
-                    GroupBy("abbreviation"),
-                    OrderBy(.Ascending("secondsFromGMT"), .Ascending("name"))
+                    From<TimeZone>(),
+                    Select<NSDictionary>(.count(#keyPath(TimeZone.abbreviation)), #keyPath(TimeZone.abbreviation)),
+                    GroupBy(#keyPath(TimeZone.abbreviation)),
+                    OrderBy(.ascending(#keyPath(TimeZone.secondsFromGMT)), .ascending(#keyPath(TimeZone.name)))
                 )!
             }
         ),
         (
             title: "Number of Countries with Summer Time",
-            query: { () -> AnyObject in
+            query: { () -> Any in
                 
                 return Static.timeZonesStack.queryAttributes(
-                    From(TimeZone),
+                    From<TimeZone>(),
                     Select<NSDictionary>(
-                        .Count("hasDaylightSavingTime", As: "numberOfCountries"),
-                        "hasDaylightSavingTime"
+                        .count(#keyPath(TimeZone.hasDaylightSavingTime), as: "numberOfCountries"),
+                        #keyPath(TimeZone.hasDaylightSavingTime)
                     ),
-                    GroupBy("hasDaylightSavingTime"),
-                    OrderBy(.Descending("hasDaylightSavingTime"))
+                    GroupBy(#keyPath(TimeZone.hasDaylightSavingTime)),
+                    OrderBy(.descending(#keyPath(TimeZone.hasDaylightSavingTime)))
                 )!
             }
         )
@@ -286,7 +286,7 @@ class FetchingAndQueryingDemoViewController: UIViewController, UITableViewDataSo
     @IBOutlet dynamic weak var segmentedControl: UISegmentedControl?
     @IBOutlet dynamic weak var tableView: UITableView?
     
-    @IBAction dynamic func segmentedControlValueChanged(sender: AnyObject?) {
+    @IBAction dynamic func segmentedControlValueChanged(_ sender: AnyObject?) {
         
         self.tableView?.reloadData()
     }

CoreStoreDemo/CoreStoreDemo/Fetching and Querying Demo/FetchingResultsViewController.swift

@@ -14,7 +14,7 @@ class FetchingResultsViewController: UITableViewController {
 
     // MARK: Public
     
-    func setTimeZones(timeZones: [TimeZone]?, title: String) {
+    func set(timeZones: [TimeZone]?, title: String) {
         
         self.timeZones += timeZones ?? []
         self.sectionTitle = title
@@ -36,14 +36,14 @@ class FetchingResultsViewController: UITableViewController {
     
     // MARK: UITableViewDataSource
     
-    override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
+    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
         
         return self.timeZones.count
     }
     
-    override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
+    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
         
-        let cell = tableView.dequeueReusableCellWithIdentifier("UITableViewCell", forIndexPath: indexPath)
+        let cell = tableView.dequeueReusableCell(withIdentifier: "UITableViewCell", for: indexPath)
         
         let timeZone = self.timeZones[indexPath.row]
         cell.textLabel?.text = timeZone.name
@@ -55,7 +55,7 @@ class FetchingResultsViewController: UITableViewController {
     
     // MARK: UITableViewDelegate
     
-    override func tableView(tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
+    override func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
         
         return self.sectionTitle
     }

CoreStoreDemo/CoreStoreDemo/Fetching and Querying Demo/QueryingResultsViewController.swift

@@ -12,23 +12,23 @@ class QueryingResultsViewController: UITableViewController {
     
     // MARK: Public
     
-    func setValue(value: AnyObject?, title: String) {
+    func set(value: Any?, title: String) {
         
         switch value {
             
-        case (let array as [AnyObject])?:
-            self.values = array.map { (item: AnyObject) -> (title: String, detail: String) in
+        case (let array as [Any])?:
+            self.values = array.map { (item: Any) -> (title: String, detail: String) in
                 (
-                    title: item.description,
-                    detail: String(reflecting: item.dynamicType)
+                    title: String(describing: item),
+                    detail: String(reflecting: type(of: item))
                 )
             }
             
         case let item?:
             self.values = [
                 (
-                    title: item.description,
-                    detail: String(reflecting: item.dynamicType)
+                    title: String(describing: item),
+                    detail: String(reflecting: type(of: item))
                 )
             ]
             
@@ -55,14 +55,14 @@ class QueryingResultsViewController: UITableViewController {
     
     // MARK: UITableViewDataSource
     
-    override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
+    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
         
         return self.values.count
     }
     
-    override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
+    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
         
-        let cell = tableView.dequeueReusableCellWithIdentifier("UITableViewCell", forIndexPath: indexPath)
+        let cell = tableView.dequeueReusableCell(withIdentifier: "UITableViewCell", for: indexPath)
         
         let value = self.values[indexPath.row]
         
@@ -75,7 +75,7 @@ class QueryingResultsViewController: UITableViewController {
     
     // MARK: UITableViewDelegate
     
-    override func tableView(tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
+    override func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
         
         return self.sectionTitle
     }

CoreStoreDemo/CoreStoreDemo/List and Object Observers Demo/ListObserverDemoViewController.swift

@@ -14,17 +14,17 @@ private struct Static {
     
     enum Filter: String {
         
-        case All = "All Colors"
-        case Light = "Light Colors"
-        case Dark = "Dark Colors"
+        case all = "All Colors"
+        case light = "Light Colors"
+        case dark = "Dark Colors"
         
         func next() -> Filter {
             
             switch self {
                 
-            case All: return .Light
-            case Light: return .Dark
-            case Dark: return .All
+            case .all: return .light
+            case .light: return .dark
+            case .dark: return .all
             }
         }
         
@@ -32,14 +32,14 @@ private struct Static {
             
             switch self {
                 
-            case .All: return Where(true)
-            case .Light: return Where("brightness >= 0.9")
-            case .Dark: return Where("brightness <= 0.4")
+            case .all: return Where(true)
+            case .light: return Where("%K >= %@", #keyPath(Palette.brightness), 0.9)
+            case .dark: return Where("%K <= %@", #keyPath(Palette.brightness), 0.4)
             }
         }
     }
     
-    static var filter = Filter.All {
+    static var filter = Filter.all {
         
         didSet {
             
@@ -53,14 +53,14 @@ private struct Static {
             SQLiteStore(
                 fileName: "ColorsDemo.sqlite",
                 configuration: "ObservingDemo",
-                localStorageOptions: .RecreateStoreOnModelMismatch
+                localStorageOptions: .recreateStoreOnModelMismatch
             )
         )
         
         return CoreStore.monitorSectionedList(
-            From(Palette),
-            SectionBy("colorName"),
-            OrderBy(.Ascending("hue"))
+            From<Palette>(),
+            SectionBy(#keyPath(Palette.colorName)),
+            OrderBy(.ascending(#keyPath(Palette.hue)))
         )
     }()
 }
@@ -86,9 +86,9 @@ class ListObserverDemoViewController: UITableViewController, ListSectionObserver
         
         let navigationItem = self.navigationItem
         navigationItem.leftBarButtonItems = [
-            self.editButtonItem(),
+            self.editButtonItem,
             UIBarButtonItem(
-                barButtonSystemItem: .Trash,
+                barButtonSystemItem: .trash,
                 target: self,
                 action: #selector(self.resetBarButtonItemTouched(_:))
             )
@@ -96,13 +96,13 @@ class ListObserverDemoViewController: UITableViewController, ListSectionObserver
         
         let filterBarButton = UIBarButtonItem(
             title: Static.filter.rawValue,
-            style: .Plain,
+            style: .plain,
             target: self,
             action: #selector(self.filterBarButtonItemTouched(_:))
         )
         navigationItem.rightBarButtonItems = [
             UIBarButtonItem(
-                barButtonSystemItem: .Add,
+                barButtonSystemItem: .add,
                 target: self,
                 action: #selector(self.addBarButtonItemTouched(_:))
             ),
@@ -112,14 +112,14 @@ class ListObserverDemoViewController: UITableViewController, ListSectionObserver
         
         Static.palettes.addObserver(self)
         
-        self.setTableEnabled(!Static.palettes.isPendingRefetch)
+        self.setTable(enabled: !Static.palettes.isPendingRefetch)
     }
     
-    override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
+    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
         
-        super.prepareForSegue(segue, sender: sender)
+        super.prepare(for: segue, sender: sender)
         
-        switch (segue.identifier, segue.destinationViewController, sender) {
+        switch (segue.identifier, segue.destination, sender) {
             
         case ("ObjectObserverDemoViewController"?, let destinationViewController as ObjectObserverDemoViewController, let palette as Palette):
             destinationViewController.palette = palette
@@ -132,19 +132,19 @@ class ListObserverDemoViewController: UITableViewController, ListSectionObserver
     
     // MARK: UITableViewDataSource
     
-    override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
+    override func numberOfSections(in tableView: UITableView) -> Int {
         
         return Static.palettes.numberOfSections()
     }
 
-    override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
+    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
         
         return Static.palettes.numberOfObjectsInSection(section)
     }
     
-    override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
+    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
         
-        let cell = tableView.dequeueReusableCellWithIdentifier("PaletteTableViewCell") as! PaletteTableViewCell
+        let cell = tableView.dequeueReusableCell(withIdentifier: "PaletteTableViewCell") as! PaletteTableViewCell
         
         let palette = Static.palettes[indexPath]
         cell.colorView?.backgroundColor = palette.color
@@ -156,21 +156,21 @@ class ListObserverDemoViewController: UITableViewController, ListSectionObserver
     
     // MARK: UITableViewDelegate
     
-    override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
+    override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
         
-        tableView.deselectRowAtIndexPath(indexPath, animated: true)
+        tableView.deselectRow(at: indexPath, animated: true)
         
-        self.performSegueWithIdentifier(
-            "ObjectObserverDemoViewController",
+        self.performSegue(
+            withIdentifier: "ObjectObserverDemoViewController",
             sender: Static.palettes[indexPath]
         )
     }
     
-    override func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {
+    override func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) {
         
         switch editingStyle {
             
-        case .Delete:
+        case .delete:
             let palette = Static.palettes[indexPath]
             CoreStore.beginAsynchronous{ (transaction) -> Void in
                 
@@ -183,7 +183,7 @@ class ListObserverDemoViewController: UITableViewController, ListSectionObserver
         }
     }
     
-    override func tableView(tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
+    override func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
         
         return Static.palettes.sectionInfoAtIndex(section).name
     }
@@ -191,44 +191,44 @@ class ListObserverDemoViewController: UITableViewController, ListSectionObserver
     
     // MARK: ListObserver
     
-    func listMonitorWillChange(monitor: ListMonitor<Palette>) {
+    func listMonitorWillChange(_ monitor: ListMonitor<Palette>) {
         
         self.tableView.beginUpdates()
     }
     
-    func listMonitorDidChange(monitor: ListMonitor<Palette>) {
+    func listMonitorDidChange(_ monitor: ListMonitor<Palette>) {
         
         self.tableView.endUpdates()
     }
     
-    func listMonitorWillRefetch(monitor: ListMonitor<Palette>) {
+    func listMonitorWillRefetch(_ monitor: ListMonitor<Palette>) {
         
-        self.setTableEnabled(false)
+        self.setTable(enabled: false)
     }
     
-    func listMonitorDidRefetch(monitor: ListMonitor<Palette>) {
+    func listMonitorDidRefetch(_ monitor: ListMonitor<Palette>) {
         
         self.filterBarButton?.title = Static.filter.rawValue
         self.tableView.reloadData()
-        self.setTableEnabled(true)
+        self.setTable(enabled: true)
     }
     
     
     // MARK: ListObjectObserver
     
-    func listMonitor(monitor: ListMonitor<Palette>, didInsertObject object: Palette, toIndexPath indexPath: NSIndexPath) {
+    func listMonitor(_ monitor: ListMonitor<Palette>, didInsertObject object: Palette, toIndexPath indexPath: IndexPath) {
         
-        self.tableView.insertRowsAtIndexPaths([indexPath], withRowAnimation: .Automatic)
+        self.tableView.insertRows(at: [indexPath], with: .automatic)
     }
     
-    func listMonitor(monitor: ListMonitor<Palette>, didDeleteObject object: Palette, fromIndexPath indexPath: NSIndexPath) {
+    func listMonitor(_ monitor: ListMonitor<Palette>, didDeleteObject object: Palette, fromIndexPath indexPath: IndexPath) {
         
-        self.tableView.deleteRowsAtIndexPaths([indexPath], withRowAnimation: .Automatic)
+        self.tableView.deleteRows(at: [indexPath], with: .automatic)
     }
     
-    func listMonitor(monitor: ListMonitor<Palette>, didUpdateObject object: Palette, atIndexPath indexPath: NSIndexPath) {
+    func listMonitor(_ monitor: ListMonitor<Palette>, didUpdateObject object: Palette, atIndexPath indexPath: IndexPath) {
         
-        if let cell = self.tableView.cellForRowAtIndexPath(indexPath) as? PaletteTableViewCell {
+        if let cell = self.tableView.cellForRow(at: indexPath) as? PaletteTableViewCell {
             
             let palette = Static.palettes[indexPath]
             cell.colorView?.backgroundColor = palette.color
@@ -236,23 +236,24 @@ class ListObserverDemoViewController: UITableViewController, ListSectionObserver
         }
     }
     
-    func listMonitor(monitor: ListMonitor<Palette>, didMoveObject object: Palette, fromIndexPath: NSIndexPath, toIndexPath: NSIndexPath) {
+    func listMonitor(_ monitor: ListMonitor<Palette>, didMoveObject object: Palette, fromIndexPath: IndexPath, toIndexPath: IndexPath) {
         
-        self.tableView.deleteRowsAtIndexPaths([fromIndexPath], withRowAnimation: .Automatic)
-        self.tableView.insertRowsAtIndexPaths([toIndexPath], withRowAnimation: .Automatic)
+        self.tableView.deleteRows(at: [fromIndexPath], with: .automatic)
+        self.tableView.insertRows(at: [toIndexPath], with: .automatic)
     }
     
     
     // MARK: ListSectionObserver
     
-    func listMonitor(monitor: ListMonitor<Palette>, didInsertSection sectionInfo: NSFetchedResultsSectionInfo, toSectionIndex sectionIndex: Int) {
+    func listMonitor(_ monitor: ListMonitor<Palette>, didInsertSection sectionInfo: NSFetchedResultsSectionInfo, toSectionIndex sectionIndex: Int) {
         
-        self.tableView.insertSections(NSIndexSet(index: sectionIndex), withRowAnimation: .Automatic)
+        self.tableView.insertSections(IndexSet(integer: sectionIndex), with: .automatic)
     }
     
-    func listMonitor(monitor: ListMonitor<Palette>, didDeleteSection sectionInfo: NSFetchedResultsSectionInfo, fromSectionIndex sectionIndex: Int) {
+    
+    func listMonitor(_ monitor: ListMonitor<Palette>, didDeleteSection sectionInfo: NSFetchedResultsSectionInfo, fromSectionIndex sectionIndex: Int) {
         
-        self.tableView.deleteSections(NSIndexSet(index: sectionIndex), withRowAnimation: .Automatic)
+        self.tableView.deleteSections(IndexSet(integer: sectionIndex), with: .automatic)
     }
     
     
@@ -260,43 +261,43 @@ class ListObserverDemoViewController: UITableViewController, ListSectionObserver
     
     private var filterBarButton: UIBarButtonItem?
     
-    @IBAction private dynamic func resetBarButtonItemTouched(sender: AnyObject?) {
+    @IBAction private dynamic func resetBarButtonItemTouched(_ sender: AnyObject?) {
         
         CoreStore.beginAsynchronous { (transaction) -> Void in
             
-            transaction.deleteAll(From(Palette))
+            transaction.deleteAll(From<Palette>())
             transaction.commit()
         }
     }
     
-    @IBAction private dynamic func filterBarButtonItemTouched(sender: AnyObject?) {
+    @IBAction private dynamic func filterBarButtonItemTouched(_ sender: AnyObject?) {
         
         Static.filter = Static.filter.next()
     }
     
-    @IBAction private dynamic func addBarButtonItemTouched(sender: AnyObject?) {
+    @IBAction private dynamic func addBarButtonItemTouched(_ sender: AnyObject?) {
         
         CoreStore.beginAsynchronous { (transaction) -> Void in
             
-            let palette = transaction.create(Into(Palette))
+            let palette = transaction.create(Into<Palette>())
             palette.setInitialValues()
             
             transaction.commit()
         }
     }
     
-    private func setTableEnabled(enabled: Bool) {
+    private func setTable(enabled: Bool) {
         
-        UIView.animateWithDuration(
-            0.2,
+        UIView.animate(
+            withDuration: 0.2,
             delay: 0,
-            options: .BeginFromCurrentState,
+            options: .beginFromCurrentState,
             animations: { () -> Void in
                 
                 if let tableView = self.tableView {
                     
                     tableView.alpha = enabled ? 1.0 : 0.5
-                    tableView.userInteractionEnabled = enabled
+                    tableView.isUserInteractionEnabled = enabled
                 }
             },
             completion: nil

CoreStoreDemo/CoreStoreDemo/List and Object Observers Demo/ObjectObserverDemoViewController.swift

@@ -50,7 +50,7 @@ class ObjectObserverDemoViewController: UIViewController, ObjectObserver {
     
     required init?(coder aDecoder: NSCoder) {
         
-        if let palette = CoreStore.fetchOne(From(Palette), OrderBy(.Ascending("hue"))) {
+        if let palette = CoreStore.fetchOne(From<Palette>(), OrderBy(.ascending(#keyPath(Palette.hue)))) {
             
             self.monitor = CoreStore.monitorObject(palette)
         }
@@ -58,13 +58,13 @@ class ObjectObserverDemoViewController: UIViewController, ObjectObserver {
             
             CoreStore.beginSynchronous { (transaction) -> Void in
                 
-                let palette = transaction.create(Into(Palette))
+                let palette = transaction.create(Into(Palette.self))
                 palette.setInitialValues()
                 
-                transaction.commitAndWait()
+                _ = transaction.commitAndWait()
             }
             
-            let palette = CoreStore.fetchOne(From(Palette), OrderBy(.Ascending("hue")))!
+            let palette = CoreStore.fetchOne(From<Palette>(), OrderBy(.ascending(#keyPath(Palette.hue))))!
             self.monitor = CoreStore.monitorObject(palette)
         }
         
@@ -85,24 +85,24 @@ class ObjectObserverDemoViewController: UIViewController, ObjectObserver {
     
     // MARK: ObjectObserver
     
-    func objectMonitor(monitor: ObjectMonitor<Palette>, didUpdateObject object: Palette, changedPersistentKeys: Set<KeyPath>) {
+    func objectMonitor(_ monitor: ObjectMonitor<Palette>, didUpdateObject object: Palette, changedPersistentKeys: Set<KeyPath>) {
         
         self.reloadPaletteInfo(object, changedKeys: changedPersistentKeys)
     }
     
-    func objectMonitor(monitor: ObjectMonitor<Palette>, didDeleteObject object: Palette) {
+    func objectMonitor(_ monitor: ObjectMonitor<Palette>, didDeleteObject object: Palette) {
         
-        self.navigationItem.rightBarButtonItem?.enabled = false
+        self.navigationItem.rightBarButtonItem?.isEnabled = false
         
         self.colorNameLabel?.alpha = 0.3
         self.colorView?.alpha = 0.3
         
         self.hsbLabel?.text = "Deleted"
-        self.hsbLabel?.textColor = UIColor.redColor()
+        self.hsbLabel?.textColor = UIColor.red
         
-        self.hueSlider?.enabled = false
-        self.saturationSlider?.enabled = false
-        self.brightnessSlider?.enabled = false
+        self.hueSlider?.isEnabled = false
+        self.saturationSlider?.isEnabled = false
+        self.brightnessSlider?.isEnabled = false
     }
 
     
@@ -118,7 +118,7 @@ class ObjectObserverDemoViewController: UIViewController, ObjectObserver {
     @IBOutlet weak var saturationSlider: UISlider?
     @IBOutlet weak var brightnessSlider: UISlider?
     
-    @IBAction dynamic func hueSliderValueDidChange(sender: AnyObject?) {
+    @IBAction dynamic func hueSliderValueDidChange(_ sender: AnyObject?) {
         
         let hue = self.hueSlider?.value ?? 0
         CoreStore.beginAsynchronous { [weak self] (transaction) -> Void in
@@ -131,7 +131,7 @@ class ObjectObserverDemoViewController: UIViewController, ObjectObserver {
         }
     }
     
-    @IBAction dynamic func saturationSliderValueDidChange(sender: AnyObject?) {
+    @IBAction dynamic func saturationSliderValueDidChange(_ sender: AnyObject?) {
         
         let saturation = self.saturationSlider?.value ?? 0
         CoreStore.beginAsynchronous { [weak self] (transaction) -> Void in
@@ -144,7 +144,7 @@ class ObjectObserverDemoViewController: UIViewController, ObjectObserver {
         }
     }
     
-    @IBAction dynamic func brightnessSliderValueDidChange(sender: AnyObject?) {
+    @IBAction dynamic func brightnessSliderValueDidChange(_ sender: AnyObject?) {
         
         let brightness = self.brightnessSlider?.value ?? 0
         CoreStore.beginAsynchronous { [weak self] (transaction) -> Void in
@@ -157,7 +157,7 @@ class ObjectObserverDemoViewController: UIViewController, ObjectObserver {
         }
     }
     
-    @IBAction dynamic func deleteBarButtonTapped(sender: AnyObject?) {
+    @IBAction dynamic func deleteBarButtonTapped(_ sender: AnyObject?) {
         
         CoreStore.beginAsynchronous { [weak self] (transaction) -> Void in
             
@@ -166,7 +166,7 @@ class ObjectObserverDemoViewController: UIViewController, ObjectObserver {
         }
     }
     
-    func reloadPaletteInfo(palette: Palette, changedKeys: Set<String>?) {
+    func reloadPaletteInfo(_ palette: Palette, changedKeys: Set<String>?) {
         
         self.colorNameLabel?.text = palette.colorName
         
@@ -176,15 +176,15 @@ class ObjectObserverDemoViewController: UIViewController, ObjectObserver {
         
         self.hsbLabel?.text = palette.colorText
         
-        if changedKeys == nil || changedKeys?.contains("hue") == true {
+        if changedKeys == nil || changedKeys?.contains(#keyPath(Palette.hue)) == true {
             
             self.hueSlider?.value = Float(palette.hue)
         }
-        if changedKeys == nil || changedKeys?.contains("saturation") == true {
+        if changedKeys == nil || changedKeys?.contains(#keyPath(Palette.saturation)) == true {
             
             self.saturationSlider?.value = palette.saturation
         }
-        if changedKeys == nil || changedKeys?.contains("brightness") == true {
+        if changedKeys == nil || changedKeys?.contains(#keyPath(Palette.brightness)) == true {
             
             self.brightnessSlider?.value = palette.brightness
         }

CoreStoreDemo/CoreStoreDemo/List and Object Observers Demo/ObserversViewController.swift

@@ -15,16 +15,16 @@ class ObserversViewController: UIViewController {
     
     // MARK: UIViewController
     
-    override func viewDidAppear(animated: Bool) {
+    override func viewDidAppear(_ animated: Bool) {
         
         super.viewDidAppear(animated)
         
         let alert = UIAlertController(
             title: "Observers Demo",
             message: "This demo shows how to observe changes to a list of objects. The top and bottom view controllers both observe a single shared \"ListMonitor\" instance.\n\nTap on a row to see how to observe changes made to a single object using a \"ObjectMonitor\".",
-            preferredStyle: .Alert
+            preferredStyle: .alert
         )
-        alert.addAction(UIAlertAction(title: "OK", style: .Cancel, handler: nil))
-        self.presentViewController(alert, animated: true, completion: nil)
+        alert.addAction(UIAlertAction(title: "OK", style: .cancel, handler: nil))
+        self.present(alert, animated: true, completion: nil)
     }
 }

CoreStoreDemo/CoreStoreDemo/List and Object Observers Demo/Palette.swift

@@ -24,7 +24,7 @@ class Palette: NSManagedObject {
         
         get {
             
-            let KVCKey = "colorName"
+            let KVCKey = #keyPath(Palette.colorName)
             if let colorName = self.accessValueForKVCKey(KVCKey) as? String {
                 
                 return colorName
@@ -49,7 +49,7 @@ class Palette: NSManagedObject {
         }
         set {
             
-            self.setValue(newValue, forKVCKey: "colorName")
+            self.setValue(newValue, forKVCKey: #keyPath(Palette.colorName))
         }
     }
     

CoreStoreDemo/CoreStoreDemo/Loggers Demo/CustomLoggerViewController.swift

@@ -8,7 +8,6 @@
 
 import UIKit
 import CoreStore
-import GCDKit
 
 
 // MARK: - CustomLoggerViewController
@@ -34,47 +33,47 @@ class CustomLoggerViewController: UIViewController, CoreStoreLogger {
         CoreStore.logger = self
     }
     
-    override func viewDidAppear(animated: Bool) {
+    override func viewDidAppear(_ animated: Bool) {
         
         super.viewDidAppear(animated)
         
         let alert = UIAlertController(
             title: "Logger Demo",
             message: "This demo shows how to plug-in any logging framework to CoreStore.\n\nThe view controller implements CoreStoreLogger and appends all logs to the text view.",
-            preferredStyle: .Alert
+            preferredStyle: .alert
         )
-        alert.addAction(UIAlertAction(title: "OK", style: .Cancel, handler: nil))
-        self.presentViewController(alert, animated: true, completion: nil)
+        alert.addAction(UIAlertAction(title: "OK", style: .cancel, handler: nil))
+        self.present(alert, animated: true, completion: nil)
     }
 
     
     // MARK: CoreStoreLogger
     
-    func log(level level: LogLevel, message: String, fileName: StaticString, lineNumber: Int, functionName: StaticString) {
+    func log(level: LogLevel, message: String, fileName: StaticString, lineNumber: Int, functionName: StaticString) {
         
-        GCDQueue.Main.async { [weak self] in
+        DispatchQueue.main.async { [weak self] in
             
             let levelString: String
             switch level {
                 
-            case .Trace: levelString = "Trace"
-            case .Notice: levelString = "Notice"
-            case .Warning: levelString = "Warning"
-            case .Fatal: levelString = "Fatal"
+            case .trace: levelString = "Trace"
+            case .notice: levelString = "Notice"
+            case .warning: levelString = "Warning"
+            case .fatal: levelString = "Fatal"
             }
-            self?.textView?.insertText("\((fileName.stringValue as NSString).lastPathComponent):\(lineNumber) \(functionName)\n  ↪︎ [Log:\(levelString)] \(message)\n\n")
+            self?.textView?.insertText("\((String(describing: fileName) as NSString).lastPathComponent):\(lineNumber) \(functionName)\n  ↪︎ [Log:\(levelString)] \(message)\n\n")
         }
     }
     
-    func log(error error: CoreStoreError, message: String, fileName: StaticString, lineNumber: Int, functionName: StaticString) {
+    func log(error: CoreStoreError, message: String, fileName: StaticString, lineNumber: Int, functionName: StaticString) {
         
-        GCDQueue.Main.async { [weak self] in
+        DispatchQueue.main.async { [weak self] in
             
-            self?.textView?.insertText("\((fileName.stringValue as NSString).lastPathComponent):\(lineNumber) \(functionName)\n  ↪︎ [Error] \(message): \(error)\n\n")
+            self?.textView?.insertText("\((String(describing: fileName) as NSString).lastPathComponent):\(lineNumber) \(functionName)\n  ↪︎ [Error] \(message): \(error)\n\n")
         }
     }
     
-    func assert(@autoclosure condition: () -> Bool, @autoclosure message: () -> String, fileName: StaticString, lineNumber: Int, functionName: StaticString) {
+    func assert(_ condition: @autoclosure () -> Bool, message: @autoclosure () -> String, fileName: StaticString, lineNumber: Int, functionName: StaticString) {
         
         if condition() {
             
@@ -82,9 +81,9 @@ class CustomLoggerViewController: UIViewController, CoreStoreLogger {
         }
         
         let messageString = message()
-        GCDQueue.Main.async { [weak self] in
+        DispatchQueue.main.async { [weak self] in
             
-            self?.textView?.insertText("\((fileName.stringValue as NSString).lastPathComponent):\(lineNumber) \(functionName)\n  ↪︎ [Assert] \(messageString)\n\n")
+            self?.textView?.insertText("\((String(describing: fileName) as NSString).lastPathComponent):\(lineNumber) \(functionName)\n  ↪︎ [Assert] \(messageString)\n\n")
         }
     }
     
@@ -94,14 +93,14 @@ class CustomLoggerViewController: UIViewController, CoreStoreLogger {
     @IBOutlet dynamic weak var textView: UITextView?
     @IBOutlet dynamic weak var segmentedControl: UISegmentedControl?
     
-    @IBAction dynamic func segmentedControlValueChanged(sender: AnyObject?) {
+    @IBAction dynamic func segmentedControlValueChanged(_ sender: AnyObject?) {
         
         switch self.segmentedControl?.selectedSegmentIndex {
             
         case 0?:
             self.dataStack.beginAsynchronous { (transaction) -> Void in
                 
-                transaction.create(Into(Palette))
+                _ = transaction.create(Into<Palette>())
             }
             
         case 1?:

CoreStoreDemo/CoreStoreDemo/MIgrations Demo/MigrationsDemoViewController.swift

@@ -12,7 +12,7 @@ import CoreStore
 
 // MARK: - MigrationsDemoViewController
 
-class MigrationsDemoViewController: UIViewController {
+class MigrationsDemoViewController: UIViewController, ListObserver, UITableViewDataSource, UITableViewDelegate {
     
     // MARK: UIViewController
     
@@ -22,28 +22,28 @@ class MigrationsDemoViewController: UIViewController {
         
         if let segmentedControl = self.segmentedControl {
             
-            for (index, model) in self.models.enumerate() {
+            for (index, model) in self.models.enumerated() {
                 
                 segmentedControl.setTitle(
                     model.label,
-                    forSegmentAtIndex: index
+                    forSegmentAt: index
                 )
             }
         }
-        self.setDataStack(nil, model: nil, scrollToSelection: false)
+        self.set(dataStack: nil, model: nil, scrollToSelection: false)
     }
     
-    override func viewDidAppear(animated: Bool) {
+    override func viewDidAppear(_ animated: Bool) {
         
         super.viewDidAppear(animated)
         
         let alert = UIAlertController(
             title: "Migrations Demo",
             message: "This demo shows how to run progressive migrations and how to support multiple model versions in a single project.\n\nThe persistent store contains 10000 organisms, which gain/lose properties when the migration evolves/devolves them.\n\nYou can use the \"mutate\" button to change an organism's properties then migrate to a different model to see how its value gets affected.",
-            preferredStyle: .Alert
+            preferredStyle: .alert
         )
-        alert.addAction(UIAlertAction(title: "OK", style: .Cancel, handler: nil))
-        self.presentViewController(alert, animated: true, completion: nil)
+        alert.addAction(UIAlertAction(title: "OK", style: .cancel, handler: nil))
+        self.present(alert, animated: true, completion: nil)
         
         
         let modelMetadata = withExtendedLifetime(DataStack(modelName: "MigrationDemo")) {
@@ -72,6 +72,71 @@ class MigrationsDemoViewController: UIViewController {
         self.selectModelVersion(modelMetadata)
     }
     
+    // MARK: ListObserver
+    
+    func listMonitorWillChange(_ monitor: ListMonitor<NSManagedObject>) { }
+    
+    func listMonitorDidChange(_ monitor: ListMonitor<NSManagedObject>) {
+        
+        if self.lastSelectedIndexPath == nil,
+            let numberOfObjectsInSection = self.listMonitor?.numberOfObjectsInSection(0),
+            numberOfObjectsInSection > 0 {
+            
+            self.tableView?.reloadData()
+            self.setSelectedIndexPath(IndexPath(row: 0, section: 0), scrollToSelection: false)
+        }
+        else {
+            
+            self.updateDisplay(reloadData: true, scrollToSelection: true, animated: true)
+        }
+    }
+    
+    // MARK: UITableViewDataSource
+    
+    @objc dynamic func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
+        
+        return self.listMonitor?.numberOfObjectsInSection(0) ?? 0
+    }
+    
+    @objc dynamic func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
+        
+        let cell = tableView.dequeueReusableCell(withIdentifier: "OrganismTableViewCell", for: indexPath) as! OrganismTableViewCell
+        
+        let dna = (self.listMonitor?[indexPath] as? OrganismProtocol)?.dna.description ?? ""
+        cell.dnaLabel?.text = "DNA: \(dna)"
+        cell.mutateButtonHandler = { [weak self] _ -> Void in
+            
+            guard let `self` = self,
+                let dataStack = self.dataStack,
+                let organism = self.listMonitor?[indexPath] else {
+                    
+                    return
+            }
+            
+            self.setSelectedIndexPath(indexPath, scrollToSelection: false)
+            self.setEnabled(false)
+            dataStack.beginAsynchronous { [weak self] (transaction) -> Void in
+                
+                let organism = transaction.edit(organism) as! OrganismProtocol
+                organism.mutate()
+                
+                transaction.commit { _ -> Void in
+                    
+                    self?.setEnabled(true)
+                }
+            }
+        }
+        return cell
+    }
+    
+    
+    // MARK: UITableViewDelegate
+    
+    @objc dynamic func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
+        
+        self.setSelectedIndexPath(indexPath, scrollToSelection: false)
+    }
+    
     
     // MARK: Private
     
@@ -113,13 +178,13 @@ class MigrationsDemoViewController: UIViewController {
         return self._dataStack
     }
     
-    private var _lastSelectedIndexPath: NSIndexPath?
-    private var lastSelectedIndexPath: NSIndexPath? {
+    private var _lastSelectedIndexPath: IndexPath?
+    private var lastSelectedIndexPath: IndexPath? {
         
         return self._lastSelectedIndexPath
     }
     
-    private func setSelectedIndexPath(indexPath: NSIndexPath, scrollToSelection: Bool) {
+    private func setSelectedIndexPath(_ indexPath: IndexPath, scrollToSelection: Bool) {
         
         self._lastSelectedIndexPath = indexPath
         self.updateDisplay(reloadData: false, scrollToSelection: scrollToSelection, animated: true)
@@ -132,7 +197,7 @@ class MigrationsDemoViewController: UIViewController {
     @IBOutlet private dynamic weak var progressView: UIProgressView?
     @IBOutlet private dynamic weak var tableView: UITableView?
     
-    @IBAction private dynamic func segmentedControlValueChanged(sender: AnyObject?) {
+    @IBAction private dynamic func segmentedControlValueChanged(_ sender: AnyObject?) {
         
         guard let index = self.segmentedControl?.selectedSegmentIndex else {
             
@@ -142,14 +207,14 @@ class MigrationsDemoViewController: UIViewController {
         self.selectModelVersion(self.models[index])
     }
     
-    private func selectModelVersion(model: ModelMetadata) {
+    private func selectModelVersion(_ model: ModelMetadata) {
         
         if self.dataStack?.modelVersion == model.version {
             
             return
         }
         
-        self.setDataStack(nil, model: nil, scrollToSelection: false) // explicitly trigger NSPersistentStore cleanup by deallocating the stack
+        self.set(dataStack: nil, model: nil, scrollToSelection: false) // explicitly trigger NSPersistentStore cleanup by deallocating the stack
         
         let dataStack = DataStack(
             modelName: "MigrationDemo",
@@ -166,18 +231,17 @@ class MigrationsDemoViewController: UIViewController {
                     return
                 }
                 
-                guard case .Success = result else {
+                guard case .success = result else {
                     
                     self.setEnabled(true)
                     return
                 }
                 
-                self.setDataStack(dataStack, model: model, scrollToSelection: true)
+                self.set(dataStack: dataStack, model: model, scrollToSelection: true)
                 
                 let count = dataStack.queryValue(
                     From(model.entityType),
-                    Select<Int>(.Count("dna"))
-                )
+                    Select<Int>(.count(#keyPath(OrganismV1.dna))))!
                 if count > 0 {
                     
                     self.setEnabled(true)
@@ -218,39 +282,39 @@ class MigrationsDemoViewController: UIViewController {
         }
     }
     
-    private func setEnabled(enabled: Bool) {
+    private func setEnabled(_ enabled: Bool) {
         
-        UIView.animateWithDuration(
-            0.2,
+        UIView.animate(
+            withDuration: 0.2,
             delay: 0,
-            options: .BeginFromCurrentState,
+            options: .beginFromCurrentState,
             animations: { () -> Void in
                 
                 let navigationItem = self.navigationItem
-                navigationItem.leftBarButtonItem?.enabled = enabled
-                navigationItem.rightBarButtonItem?.enabled = enabled
+                navigationItem.leftBarButtonItem?.isEnabled = enabled
+                navigationItem.rightBarButtonItem?.isEnabled = enabled
                 navigationItem.hidesBackButton = !enabled
                 
-                self.segmentedControl?.enabled = enabled
+                self.segmentedControl?.isEnabled = enabled
                 
                 if let tableView = self.tableView {
                     
                     tableView.alpha = enabled ? 1.0 : 0.5
-                    tableView.userInteractionEnabled = enabled
+                    tableView.isUserInteractionEnabled = enabled
                 }
             },
             completion: nil
         )
     }
     
-    private func setDataStack(dataStack: DataStack?, model: ModelMetadata?, scrollToSelection: Bool) {
+    private func set(dataStack: DataStack?, model: ModelMetadata?, scrollToSelection: Bool) {
         
         if let dataStack = dataStack, let model = model {
             
-            self.segmentedControl?.selectedSegmentIndex = self.models.map { $0.version }.indexOf(model.version)!
+            self.segmentedControl?.selectedSegmentIndex = self.models.map { $0.version }.index(of: model.version)!
             
             self._dataStack = dataStack
-            let listMonitor = dataStack.monitorList(From(model.entityType), OrderBy(.Descending("dna")))
+            let listMonitor = dataStack.monitorList(From(model.entityType), OrderBy(.descending("dna")))
             listMonitor.addObserver(self)
             self._listMonitor = listMonitor
             
@@ -258,7 +322,7 @@ class MigrationsDemoViewController: UIViewController {
                 
                 if listMonitor.numberOfObjectsInSection(0) > 0 {
                     
-                    self.setSelectedIndexPath(NSIndexPath(forRow: 0, inSection: 0), scrollToSelection: true)
+                    self.setSelectedIndexPath(IndexPath(row: 0, section: 0), scrollToSelection: true)
                 }
             }
         }
@@ -272,14 +336,14 @@ class MigrationsDemoViewController: UIViewController {
         self.updateDisplay(reloadData: true, scrollToSelection: scrollToSelection, animated: false)
     }
     
-    private func reloadTableHeaderWithProgress(progress: NSProgress) {
+    private func reloadTableHeaderWithProgress(_ progress: Progress) {
         
         self.progressView?.setProgress(Float(progress.fractionCompleted), animated: true)
-        self.titleLabel?.text = "Migrating: \(progress.localizedDescription)"
-        self.organismLabel?.text = "Progressive step \(progress.localizedAdditionalDescription)"
+        self.titleLabel?.text = "Migrating: \(progress.localizedDescription ?? "")"
+        self.organismLabel?.text = "Progressive step \(progress.localizedAdditionalDescription ?? "")"
     }
     
-    private func updateDisplay(reloadData reloadData: Bool, scrollToSelection: Bool, animated: Bool) {
+    private func updateDisplay(reloadData: Bool, scrollToSelection: Bool, animated: Bool) {
         
         var lines = [String]()
         var organismType = ""
@@ -287,14 +351,14 @@ class MigrationsDemoViewController: UIViewController {
             
             for property in organism.entity.properties {
                 
-                let value: AnyObject = organism.valueForKey(property.name) ?? NSNull()
+                let value = organism.value(forKey: property.name) ?? NSNull()
                 lines.append("\(property.name): \(value)")
             }
             organismType = organism.entity.managedObjectClassName
         }
         
         self.titleLabel?.text = organismType
-        self.organismLabel?.text = lines.joinWithSeparator("\n")
+        self.organismLabel?.text = lines.joined(separator: "\n")
         self.progressView?.progress = 0
         
         self.headerContainer?.setNeedsLayout()
@@ -311,87 +375,13 @@ class MigrationsDemoViewController: UIViewController {
         
         tableView.layoutIfNeeded()
         
-        if let indexPath = self.lastSelectedIndexPath where indexPath.row < tableView.numberOfRowsInSection(0) {
+        if let indexPath = self.lastSelectedIndexPath,
+            indexPath.row < tableView.numberOfRows(inSection: 0) {
             
-            tableView.selectRowAtIndexPath(indexPath,
+            tableView.selectRow(at: indexPath,
                 animated: scrollToSelection && animated,
-                scrollPosition: scrollToSelection ? .Middle : .None
+                scrollPosition: scrollToSelection ? .middle : .none
             )
         }
     }
 }
-
-
-// MARK: - MigrationsDemoViewController: ListObserver
-
-extension MigrationsDemoViewController: ListObserver {
-    
-    // MARK: ListObserver
-    
-    func listMonitorWillChange(monitor: ListMonitor<NSManagedObject>) { }
-    
-    func listMonitorDidChange(monitor: ListMonitor<NSManagedObject>) {
-        
-        if self.lastSelectedIndexPath == nil && self.listMonitor?.numberOfObjectsInSection(0) > 0 {
-            
-            self.tableView?.reloadData()
-            self.setSelectedIndexPath(NSIndexPath(forRow: 0, inSection: 0), scrollToSelection: false)
-        }
-        else {
-            
-            self.updateDisplay(reloadData: true, scrollToSelection: true, animated: true)
-        }
-    }
-}
-
-
-// MARK: - MigrationsDemoViewController: UITableViewDataSource, UITableViewDelegate
-
-extension MigrationsDemoViewController: UITableViewDataSource, UITableViewDelegate {
-    
-    // MARK: UITableViewDataSource
-    
-    @objc dynamic func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
-        
-        return self.listMonitor?.numberOfObjectsInSection(0) ?? 0
-    }
-    
-    @objc dynamic func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
-        
-        let cell = tableView.dequeueReusableCellWithIdentifier("OrganismTableViewCell", forIndexPath: indexPath) as! OrganismTableViewCell
-        
-        let dna = (self.listMonitor?[indexPath] as? OrganismProtocol)?.dna.description ?? ""
-        cell.dnaLabel?.text = "DNA: \(dna)"
-        cell.mutateButtonHandler = { [weak self] _ -> Void in
-            
-            guard let `self` = self,
-                let dataStack = self.dataStack,
-                let organism = self.listMonitor?[indexPath] else {
-                    
-                    return
-            }
-            
-            self.setSelectedIndexPath(indexPath, scrollToSelection: false)
-            self.setEnabled(false)
-            dataStack.beginAsynchronous { [weak self] (transaction) -> Void in
-                
-                let organism = transaction.edit(organism) as! OrganismProtocol
-                organism.mutate()
-                
-                transaction.commit { _ -> Void in
-                    
-                    self?.setEnabled(true)
-                }
-            }
-        }
-        return cell
-    }
-    
-    
-    // MARK: UITableViewDelegate
-    
-    @objc dynamic func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
-        
-        self.setSelectedIndexPath(indexPath, scrollToSelection: false)
-    }
-}

CoreStoreDemo/CoreStoreDemo/MIgrations Demo/OrganismProtocol.swift

@@ -13,4 +13,4 @@ protocol OrganismProtocol: class {
     var dna: Int64 { get set }
     
     func mutate()
-}
+}

CoreStoreDemo/CoreStoreDemo/MIgrations Demo/OrganismTableViewCell.swift

@@ -15,7 +15,7 @@ class OrganismTableViewCell: UITableViewCell {
     
     var mutateButtonHandler: (() -> Void)?
 
-    @IBAction dynamic func mutateButtonTouchUpInside(sender: UIButton?) {
+    @IBAction dynamic func mutateButtonTouchUpInside(_ sender: UIButton?) {
      
         self.mutateButtonHandler?()
     }

CoreStoreDemo/CoreStoreDemo/MIgrations Demo/OrganismV2ToV3MigrationPolicy.swift

@@ -10,14 +10,20 @@ import CoreData
 
 class OrganismV2ToV3MigrationPolicy: NSEntityMigrationPolicy {
     
-    override func createDestinationInstancesForSourceInstance(sInstance: NSManagedObject, entityMapping mapping: NSEntityMapping, manager: NSMigrationManager) throws {
+    override func createDestinationInstances(forSource sInstance: NSManagedObject, in mapping: NSEntityMapping, manager: NSMigrationManager) throws {
         
-        try super.createDestinationInstancesForSourceInstance(sInstance, entityMapping: mapping, manager: manager)
+        try super.createDestinationInstances(forSource: sInstance, in: mapping, manager: manager)
         
-        for dInstance in manager.destinationInstancesForEntityMappingNamed(mapping.name, sourceInstances: [sInstance]) {
+        for dInstance in manager.destinationInstances(forEntityMappingName: mapping.name, sourceInstances: [sInstance]) {
             
-            dInstance.setValue(false, forKey: "hasVertebrae")
-            dInstance.setValue(sInstance.valueForKey("numberOfFlippers"), forKey: "numberOfLimbs")
+            dInstance.setValue(
+                false,
+                forKey: #keyPath(OrganismV3.hasVertebrae)
+            )
+            dInstance.setValue(
+                sInstance.value(forKey: #keyPath(OrganismV2.numberOfFlippers)),
+                forKey: #keyPath(OrganismV3.numberOfLimbs)
+            )
         }
     }
 }

CoreStoreDemo/CoreStoreDemo/MigrationDemo.xcdatamodeld/MigrationDemo.xcdatamodel/contents

@@ -1,9 +1,9 @@
 <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
-<model userDefinedModelVersionIdentifier="" type="com.apple.IDECoreDataModeler.DataModel" documentVersion="1.0" lastSavedToolsVersion="7701" systemVersion="14E46" minimumToolsVersion="Xcode 4.3">
+<model type="com.apple.IDECoreDataModeler.DataModel" documentVersion="1.0" lastSavedToolsVersion="11198.3" systemVersion="15F34" minimumToolsVersion="Xcode 4.3" sourceLanguage="Swift" userDefinedModelVersionIdentifier="">
     <entity name="Organism" representedClassName="CoreStoreDemo.OrganismV1" syncable="YES">
-        <attribute name="dna" optional="YES" attributeType="Integer 64" syncable="YES"/>
-        <attribute name="hasHead" optional="YES" attributeType="Boolean" syncable="YES"/>
-        <attribute name="hasTail" optional="YES" attributeType="Boolean" syncable="YES"/>
+        <attribute name="dna" optional="YES" attributeType="Integer 64" usesScalarValueType="NO" syncable="YES"/>
+        <attribute name="hasHead" optional="YES" attributeType="Boolean" usesScalarValueType="NO" syncable="YES"/>
+        <attribute name="hasTail" optional="YES" attributeType="Boolean" usesScalarValueType="NO" syncable="YES"/>
     </entity>
     <elements>
         <element name="Organism" positionX="-36" positionY="9" width="128" height="90"/>

CoreStoreDemo/CoreStoreDemo/MigrationDemo.xcdatamodeld/MigrationDemoV2.xcdatamodel/contents

@@ -1,10 +1,10 @@
 <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
-<model userDefinedModelVersionIdentifier="" type="com.apple.IDECoreDataModeler.DataModel" documentVersion="1.0" lastSavedToolsVersion="7701" systemVersion="14E46" minimumToolsVersion="Xcode 4.3">
+<model type="com.apple.IDECoreDataModeler.DataModel" documentVersion="1.0" lastSavedToolsVersion="11198.3" systemVersion="15F34" minimumToolsVersion="Xcode 4.3" sourceLanguage="Swift" userDefinedModelVersionIdentifier="">
     <entity name="Organism" representedClassName="CoreStoreDemo.OrganismV2" syncable="YES">
-        <attribute name="dna" optional="YES" attributeType="Integer 64" syncable="YES"/>
-        <attribute name="hasHead" attributeType="Boolean" syncable="YES"/>
-        <attribute name="hasTail" attributeType="Boolean" syncable="YES"/>
-        <attribute name="numberOfFlippers" attributeType="Integer 32" defaultValueString="0" syncable="YES"/>
+        <attribute name="dna" optional="YES" attributeType="Integer 64" usesScalarValueType="NO" syncable="YES"/>
+        <attribute name="hasHead" attributeType="Boolean" usesScalarValueType="NO" syncable="YES"/>
+        <attribute name="hasTail" attributeType="Boolean" usesScalarValueType="NO" syncable="YES"/>
+        <attribute name="numberOfFlippers" attributeType="Integer 32" defaultValueString="0" usesScalarValueType="NO" syncable="YES"/>
     </entity>
     <elements>
         <element name="Organism" positionX="-36" positionY="9" width="128" height="105"/>

CoreStoreDemo/CoreStoreDemo/MigrationDemo.xcdatamodeld/MigrationDemoV3.xcdatamodel/contents

@@ -1,11 +1,11 @@
 <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
-<model userDefinedModelVersionIdentifier="" type="com.apple.IDECoreDataModeler.DataModel" documentVersion="1.0" lastSavedToolsVersion="7701" systemVersion="14E46" minimumToolsVersion="Xcode 4.3">
+<model type="com.apple.IDECoreDataModeler.DataModel" documentVersion="1.0" lastSavedToolsVersion="11198.3" systemVersion="15F34" minimumToolsVersion="Xcode 4.3" sourceLanguage="Swift" userDefinedModelVersionIdentifier="">
     <entity name="Organism" representedClassName="CoreStoreDemo.OrganismV3" syncable="YES">
-        <attribute name="dna" optional="YES" attributeType="Integer 64" syncable="YES"/>
-        <attribute name="hasHead" attributeType="Boolean" syncable="YES"/>
-        <attribute name="hasTail" attributeType="Boolean" syncable="YES"/>
-        <attribute name="hasVertebrae" attributeType="Boolean" syncable="YES"/>
-        <attribute name="numberOfLimbs" attributeType="Integer 32" defaultValueString="0" syncable="YES"/>
+        <attribute name="dna" optional="YES" attributeType="Integer 64" usesScalarValueType="NO" syncable="YES"/>
+        <attribute name="hasHead" attributeType="Boolean" usesScalarValueType="NO" syncable="YES"/>
+        <attribute name="hasTail" attributeType="Boolean" usesScalarValueType="NO" syncable="YES"/>
+        <attribute name="hasVertebrae" attributeType="Boolean" usesScalarValueType="NO" syncable="YES"/>
+        <attribute name="numberOfLimbs" attributeType="Integer 32" defaultValueString="0" usesScalarValueType="NO" syncable="YES"/>
     </entity>
     <elements>
         <element name="Organism" positionX="-36" positionY="9" width="128" height="120"/>

CoreStoreDemo/CoreStoreDemo/Stack Setup Demo/StackSetupDemoViewController.swift

@@ -22,20 +22,20 @@ private struct Static {
             SQLiteStore(
                 fileName: "AccountsDemo_FB_Male.sqlite",
                 configuration: maleConfiguration,
-                localStorageOptions: .RecreateStoreOnModelMismatch
+                localStorageOptions: .recreateStoreOnModelMismatch
             )
         )
         try! dataStack.addStorageAndWait(
             SQLiteStore(
                 fileName: "AccountsDemo_FB_Female.sqlite",
                 configuration: femaleConfiguration,
-                localStorageOptions: .RecreateStoreOnModelMismatch
+                localStorageOptions: .recreateStoreOnModelMismatch
             )
         )
         
-        dataStack.beginSynchronous { (transaction) -> Void in
+        _ = dataStack.beginSynchronous { (transaction) -> Void in
             
-            transaction.deleteAll(From(UserAccount))
+            transaction.deleteAll(From<UserAccount>())
             
             let account1 = transaction.create(Into<MaleAccount>(maleConfiguration))
             account1.accountType = "Facebook"
@@ -47,7 +47,7 @@ private struct Static {
             account2.name = "Jane Doe HCD"
             account2.friends = 314
             
-            transaction.commitAndWait()
+            _ = transaction.commitAndWait()
         }
         
         return dataStack
@@ -60,20 +60,20 @@ private struct Static {
             SQLiteStore(
                 fileName: "AccountsDemo_TW_Male.sqlite",
                 configuration: maleConfiguration,
-                localStorageOptions: .RecreateStoreOnModelMismatch
+                localStorageOptions: .recreateStoreOnModelMismatch
             )
         )
         try! dataStack.addStorageAndWait(
             SQLiteStore(
                 fileName: "AccountsDemo_TW_Female.sqlite",
                 configuration: femaleConfiguration,
-                localStorageOptions: .RecreateStoreOnModelMismatch
+                localStorageOptions: .recreateStoreOnModelMismatch
             )
         )
         
-        dataStack.beginSynchronous { (transaction) -> Void in
+        _ = dataStack.beginSynchronous { (transaction) -> Void in
             
-            transaction.deleteAll(From(UserAccount))
+            transaction.deleteAll(From<UserAccount>())
             
             let account1 = transaction.create(Into<MaleAccount>(maleConfiguration))
             account1.accountType = "Twitter"
@@ -85,7 +85,7 @@ private struct Static {
             account2.name = "#janedoe_hcd"
             account2.friends = 100
             
-            transaction.commitAndWait()
+            _ = transaction.commitAndWait()
         }
         
         return dataStack
@@ -100,53 +100,53 @@ private struct Static {
 class StackSetupDemoViewController: UITableViewController {
     
     let accounts = [
-        Static.facebookStack.fetchAll(From(UserAccount)) ?? [],
-        Static.twitterStack.fetchAll(From(UserAccount)) ?? []
+        Static.facebookStack.fetchAll(From(UserAccount.self)) ?? [],
+        Static.twitterStack.fetchAll(From(UserAccount.self)) ?? []
     ]
     
     
     // MARK: UIViewController
     
-    override func viewWillAppear(animated: Bool) {
+    override func viewWillAppear(_ animated: Bool) {
         
         super.viewWillAppear(animated)
         
         self.tableView.reloadData()
         
-        let indexPath = NSIndexPath(forRow: 0, inSection: 0)
-        self.tableView.selectRowAtIndexPath(indexPath, animated: false, scrollPosition: .None)
-        self.updateDetailsWithAccount(self.accounts[indexPath.section][indexPath.row])
+        let indexPath = IndexPath(row: 0, section: 0)
+        self.tableView.selectRow(at: indexPath, animated: false, scrollPosition: .none)
+        self.updateDetails(account: self.accounts[indexPath.section][indexPath.row])
     }
     
-    override func viewDidAppear(animated: Bool) {
+    override func viewDidAppear(_ animated: Bool) {
         
         super.viewDidAppear(animated)
         
         let alert = UIAlertController(
             title: "Setup Demo",
             message: "This demo shows how to initialize 2 DataStacks with 2 configurations each, for a total of 4 SQLite files, each with 1 instance of a \"UserAccount\" entity.",
-            preferredStyle: .Alert
+            preferredStyle: .alert
         )
-        alert.addAction(UIAlertAction(title: "OK", style: .Cancel, handler: nil))
-        self.presentViewController(alert, animated: true, completion: nil)
+        alert.addAction(UIAlertAction(title: "OK", style: .cancel, handler: nil))
+        self.present(alert, animated: true, completion: nil)
     }
     
     
     // MARK: UITableViewDataSource
     
-    override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
+    override func numberOfSections(in tableView: UITableView) -> Int {
         
         return self.accounts.count
     }
     
-    override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
+    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
         
         return self.accounts[section].count
     }
     
-    override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
+    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
         
-        let cell = tableView.dequeueReusableCellWithIdentifier("UITableViewCell")!
+        let cell = tableView.dequeueReusableCell(withIdentifier: "UITableViewCell")!
         
         let account = self.accounts[indexPath.section][indexPath.row]
         cell.textLabel?.text = account.name
@@ -158,13 +158,13 @@ class StackSetupDemoViewController: UITableViewController {
     
     // MARK: UITableViewDelegate
     
-    override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
+    override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
         
         let account = self.accounts[indexPath.section][indexPath.row]
-        self.updateDetailsWithAccount(account)
+        self.updateDetails(account: account)
     }
     
-    override func tableView(tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
+    override func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
         
         switch section {
             
@@ -188,7 +188,7 @@ class StackSetupDemoViewController: UITableViewController {
     @IBOutlet private dynamic weak var nameLabel: UILabel?
     @IBOutlet private dynamic weak var friendsLabel: UILabel?
     
-    private func updateDetailsWithAccount(account: UserAccount) {
+    private func updateDetails(account: UserAccount) {
         
         self.accountTypeLabel?.text = account.accountType
         self.nameLabel?.text = account.name

CoreStoreDemo/CoreStoreDemo/Transactions Demo/TransactionsDemoViewController.swift

@@ -11,7 +11,6 @@ import CoreLocation
 import MapKit
 import AddressBookUI
 import CoreStore
-import GCDKit
 
 
 private struct Static {
@@ -22,21 +21,21 @@ private struct Static {
             SQLiteStore(
                 fileName: "PlaceDemo.sqlite",
                 configuration: "TransactionsDemo",
-                localStorageOptions: .RecreateStoreOnModelMismatch
+                localStorageOptions: .recreateStoreOnModelMismatch
             )
         )
         
-        var place = CoreStore.fetchOne(From(Place))
+        var place = CoreStore.fetchOne(From<Place>())
         if place == nil {
             
-            CoreStore.beginSynchronous { (transaction) -> Void in
+            _ = CoreStore.beginSynchronous { (transaction) -> Void in
                 
-                let place = transaction.create(Into(Place))
+                let place = transaction.create(Into<Place>())
                 place.setInitialValues()
                 
-                transaction.commitAndWait()
+                _ = transaction.commitAndWait()
             }
-            place = CoreStore.fetchOne(From(Place))
+            place = CoreStore.fetchOne(From<Place>())
         }
         
         return CoreStore.monitorObject(place!)
@@ -71,33 +70,33 @@ class TransactionsDemoViewController: UIViewController, MKMapViewDelegate, Objec
         Static.placeController.addObserver(self)
         
         self.navigationItem.rightBarButtonItem = UIBarButtonItem(
-            barButtonSystemItem: .Refresh,
+            barButtonSystemItem: .refresh,
             target: self,
             action: #selector(self.refreshButtonTapped(_:))
         )
     }
     
-    override func viewDidAppear(animated: Bool) {
+    override func viewDidAppear(_ animated: Bool) {
         
         super.viewDidAppear(animated)
         
         let alert = UIAlertController(
             title: "Transactions Demo",
             message: "This demo shows how to use the 3 types of transactions to save updates: synchronous, asynchronous, and unsafe.\n\nTap and hold on the map to change the pin location.",
-            preferredStyle: .Alert
+            preferredStyle: .alert
         )
-        alert.addAction(UIAlertAction(title: "OK", style: .Cancel, handler: nil))
-        self.presentViewController(alert, animated: true, completion: nil)
+        alert.addAction(UIAlertAction(title: "OK", style: .cancel, handler: nil))
+        self.present(alert, animated: true, completion: nil)
     }
     
-    override func viewWillAppear(animated: Bool) {
+    override func viewWillAppear(_ animated: Bool) {
         
         super.viewWillAppear(animated)
         
         if let mapView = self.mapView, let place = Static.placeController.object {
             
             mapView.addAnnotation(place)
-            mapView.setCenterCoordinate(place.coordinate, animated: false)
+            mapView.setCenter(place.coordinate, animated: false)
             mapView.selectAnnotation(place, animated: false)
         }
     }
@@ -105,14 +104,14 @@ class TransactionsDemoViewController: UIViewController, MKMapViewDelegate, Objec
     
     // MARK: MKMapViewDelegate
     
-    func mapView(mapView: MKMapView, viewForAnnotation annotation: MKAnnotation) -> MKAnnotationView? {
+    func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? {
         
         let identifier = "MKAnnotationView"
-        var annotationView: MKPinAnnotationView! = mapView.dequeueReusableAnnotationViewWithIdentifier(identifier) as? MKPinAnnotationView
+        var annotationView: MKPinAnnotationView! = mapView.dequeueReusableAnnotationView(withIdentifier: identifier) as? MKPinAnnotationView
         if annotationView == nil {
             
             annotationView = MKPinAnnotationView(annotation: annotation, reuseIdentifier: identifier)
-            annotationView.enabled = true
+            annotationView.isEnabled = true
             annotationView.canShowCallout = true
             annotationView.animatesDrop = true
         }
@@ -127,28 +126,28 @@ class TransactionsDemoViewController: UIViewController, MKMapViewDelegate, Objec
     
     // MARK: ObjectObserver
     
-    func objectMonitor(monitor: ObjectMonitor<Place>, willUpdateObject object: Place) {
+    func objectMonitor(_ monitor: ObjectMonitor<Place>, willUpdateObject object: Place) {
         
         // none
     }
     
-    func objectMonitor(monitor: ObjectMonitor<Place>, didUpdateObject object: Place, changedPersistentKeys: Set<KeyPath>) {
+    func objectMonitor(_ monitor: ObjectMonitor<Place>, didUpdateObject object: Place, changedPersistentKeys: Set<KeyPath>) {
         
         if let mapView = self.mapView {
             
-            mapView.removeAnnotations(mapView.annotations ?? [])
+            mapView.removeAnnotations(mapView.annotations)
             mapView.addAnnotation(object)
-            mapView.setCenterCoordinate(object.coordinate, animated: true)
+            mapView.setCenter(object.coordinate, animated: true)
             mapView.selectAnnotation(object, animated: true)
             
-            if changedPersistentKeys.contains("latitude") || changedPersistentKeys.contains("longitude") {
+            if changedPersistentKeys.contains(#keyPath(Place.latitude)) || changedPersistentKeys.contains(#keyPath(Place.longitude)) {
                 
-                self.geocodePlace(object)
+                self.geocode(place: object)
             }
         }
     }
     
-    func objectMonitor(monitor: ObjectMonitor<Place>, didDeleteObject object: Place) {
+    func objectMonitor(_ monitor: ObjectMonitor<Place>, didDeleteObject object: Place) {
         
         // none
     }
@@ -160,13 +159,15 @@ class TransactionsDemoViewController: UIViewController, MKMapViewDelegate, Objec
     
     @IBOutlet weak var mapView: MKMapView?
     
-    @IBAction dynamic func longPressGestureRecognized(sender: AnyObject?) {
+    @IBAction dynamic func longPressGestureRecognized(_ sender: AnyObject?) {
         
-        if let mapView = self.mapView, let gesture = sender as? UILongPressGestureRecognizer where gesture.state == .Began {
+        if let mapView = self.mapView,
+            let gesture = sender as? UILongPressGestureRecognizer,
+            gesture.state == .began {
             
-            let coordinate = mapView.convertPoint(
-                gesture.locationInView(mapView),
-                toCoordinateFromView: mapView
+            let coordinate = mapView.convert(
+                gesture.location(in: mapView),
+                toCoordinateFrom: mapView
             )
             CoreStore.beginAsynchronous { (transaction) -> Void in
                 
@@ -177,17 +178,17 @@ class TransactionsDemoViewController: UIViewController, MKMapViewDelegate, Objec
         }
     }
     
-    @IBAction dynamic func refreshButtonTapped(sender: AnyObject?) {
+    @IBAction dynamic func refreshButtonTapped(_ sender: AnyObject?) {
         
-        CoreStore.beginSynchronous { (transaction) -> Void in
+        _ = CoreStore.beginSynchronous { (transaction) -> Void in
             
             let place = transaction.edit(Static.placeController.object)
             place?.setInitialValues()
-            transaction.commitAndWait()
+            _ = transaction.commitAndWait()
         }
     }
     
-    func geocodePlace(place: Place) {
+    func geocode(place: Place) {
         
         let transaction = CoreStore.beginUnsafe()
         

CoreStoreTests/BaseTests/BaseTestCase.swift

@@ -36,11 +36,12 @@ class BaseTestCase: XCTestCase {
     // MARK: Internal
     
     @nonobjc
-    func prepareStack<T>(configurations configurations: [String?] = [nil], @noescape _ closure: (dataStack: DataStack) -> T) -> T {
+    @discardableResult
+    func prepareStack<T>(configurations: [String?] = [nil], _ closure: (_ dataStack: DataStack) -> T) -> T {
         
         let stack = DataStack(
             modelName: "Model",
-            bundle: NSBundle(forClass: self.dynamicType)
+            bundle: Bundle(for: type(of: self))
         )
         do {
             
@@ -49,10 +50,10 @@ class BaseTestCase: XCTestCase {
                 try stack.addStorageAndWait(
                     SQLiteStore(
                         fileURL: SQLiteStore.defaultRootDirectory
-                            .URLByAppendingPathComponent(NSUUID().UUIDString)
-                            .URLByAppendingPathComponent("\(self.dynamicType)_\(($0 ?? "-null-")).sqlite"),
+                            .appendingPathComponent(UUID().uuidString)
+                            .appendingPathComponent("\(type(of: self))_\(($0 ?? "-null-")).sqlite"),
                         configuration: $0,
-                        localStorageOptions: .RecreateStoreOnModelMismatch
+                        localStorageOptions: .recreateStoreOnModelMismatch
                     )
                 )
             }
@@ -61,11 +62,11 @@ class BaseTestCase: XCTestCase {
             
             XCTFail(error.coreStoreDumpString)
         }
-        return closure(dataStack: stack)
+        return closure(stack)
     }
     
     @nonobjc
-    func expectLogger<T>(expectations: [TestLogger.Expectation], @noescape closure: () -> T) -> T {
+    func expectLogger<T>(_ expectations: [TestLogger.Expectation], closure: () -> T) -> T {
         
         CoreStore.logger = TestLogger(self.prepareLoggerExpectations(expectations))
         defer {
@@ -77,18 +78,18 @@ class BaseTestCase: XCTestCase {
     }
     
     @nonobjc
-    func expectLogger(expectations: [TestLogger.Expectation: XCTestExpectation]) {
+    func expectLogger(_ expectations: [TestLogger.Expectation: XCTestExpectation]) {
         
         CoreStore.logger = TestLogger(expectations)
     }
     
     @nonobjc
-    func prepareLoggerExpectations(expectations: [TestLogger.Expectation]) -> [TestLogger.Expectation: XCTestExpectation] {
+    func prepareLoggerExpectations(_ expectations: [TestLogger.Expectation]) -> [TestLogger.Expectation: XCTestExpectation] {
         
         var testExpectations: [TestLogger.Expectation: XCTestExpectation] = [:]
         for expectation in expectations {
             
-            testExpectations[expectation] = self.expectationWithDescription("Logger Expectation: \(expectation)")
+            testExpectations[expectation] = self.expectation(description: "Logger Expectation: \(expectation)")
         }
         return testExpectations
     }
@@ -96,13 +97,13 @@ class BaseTestCase: XCTestCase {
     @nonobjc
     func checkExpectationsImmediately() {
         
-        self.waitForExpectationsWithTimeout(0, handler: nil)
+        self.waitForExpectations(timeout: 0, handler: { _ in })
     }
     
     @nonobjc
     func waitAndCheckExpectations() {
         
-        self.waitForExpectationsWithTimeout(10, handler: nil)
+        self.waitForExpectations(timeout: 10, handler: {_ in })
     }
     
     // MARK: XCTestCase
@@ -126,7 +127,7 @@ class BaseTestCase: XCTestCase {
     
     private func deleteStores() {
         
-        _ = try? NSFileManager.defaultManager().removeItemAtURL(SQLiteStore.defaultRootDirectory)
+        _ = try? FileManager.default.removeItem(at: SQLiteStore.defaultRootDirectory)
     }
 }
 
@@ -137,11 +138,11 @@ class TestLogger: CoreStoreLogger {
     
     enum Expectation {
         
-        case LogWarning
-        case LogFatal
-        case LogError
-        case AssertionFailure
-        case FatalError
+        case logWarning
+        case logFatal
+        case logError
+        case assertionFailure
+        case fatalError
     }
     
     init(_ expectations: [Expectation: XCTestExpectation]) {
@@ -152,33 +153,35 @@ class TestLogger: CoreStoreLogger {
     
     // MARK: CoreStoreLogger
     
-    func log(level level: LogLevel, message: String, fileName: StaticString, lineNumber: Int, functionName: StaticString) {
+    var enableObjectConcurrencyDebugging: Bool = true
+    
+    func log(level: LogLevel, message: String, fileName: StaticString, lineNumber: Int, functionName: StaticString) {
         
         switch level {
             
-        case .Warning:  self.fulfill(.LogWarning)
-        case .Fatal:    self.fulfill(.LogFatal)
+        case .warning:  self.fulfill(.logWarning)
+        case .fatal:    self.fulfill(.logFatal)
         default:        break
         }
     }
     
-    func log(error error: CoreStoreError, message: String, fileName: StaticString, lineNumber: Int, functionName: StaticString) {
+    func log(error: CoreStoreError, message: String, fileName: StaticString, lineNumber: Int, functionName: StaticString) {
         
-        self.fulfill(.LogError)
+        self.fulfill(.logError)
     }
     
-    func assert(@autoclosure condition: () -> Bool, @autoclosure message: () -> String, fileName: StaticString, lineNumber: Int, functionName: StaticString) {
+    func assert(_ condition: @autoclosure () -> Bool, message: @autoclosure () -> String, fileName: StaticString, lineNumber: Int, functionName: StaticString) {
         
         if condition() {
             
             return
         }
-        self.fulfill(.AssertionFailure)
+        self.fulfill(.assertionFailure)
     }
     
-    func abort(message: String, fileName: StaticString, lineNumber: Int, functionName: StaticString) {
+    func abort(_ message: String, fileName: StaticString, lineNumber: Int, functionName: StaticString) {
         
-        self.fulfill(.FatalError)
+        self.fulfill(.fatalError)
     }
     
     
@@ -186,7 +189,7 @@ class TestLogger: CoreStoreLogger {
     
     private var expectations: [Expectation: XCTestExpectation]
     
-    private func fulfill(expectation: Expectation) {
+    private func fulfill(_ expectation: Expectation) {
         
         if let instance = self.expectations[expectation] {
             

CoreStoreTests/BaseTests/BaseTestDataTestCase.swift

@@ -17,22 +17,22 @@ import CoreStore
 class BaseTestDataTestCase: BaseTestCase {
     
     @nonobjc
-    let dateFormatter: NSDateFormatter = {
+    let dateFormatter: DateFormatter = {
         
-        let formatter = NSDateFormatter()
-        formatter.locale = NSLocale(localeIdentifier: "en_US_POSIX")
-        formatter.timeZone = NSTimeZone(name: "UTC")
-        formatter.calendar = NSCalendar(identifier: NSCalendarIdentifierGregorian)
+        let formatter = DateFormatter()
+        formatter.locale = Locale(identifier: "en_US_POSIX")
+        formatter.timeZone = TimeZone(identifier: "UTC")
+        formatter.calendar = Calendar(identifier: Calendar.Identifier.gregorian)
         formatter.dateFormat = "yyyy'-'MM'-'dd'T'HH':'mm':'ssZ"
         return formatter
     }()
     
     @nonobjc
-    func prepareTestDataForStack(stack: DataStack, configurations: [String?] = [nil]) {
+    func prepareTestDataForStack(_ stack: DataStack, configurations: [String?] = [nil]) {
         
         stack.beginSynchronous { (transaction) in
             
-            for (configurationIndex, configuration) in configurations.enumerate() {
+            for (configurationIndex, configuration) in configurations.enumerated() {
                 
                 let configurationOrdinal = configurationIndex + 1
                 if configuration == nil || configuration == "Config1" {
@@ -40,16 +40,16 @@ class BaseTestDataTestCase: BaseTestCase {
                     for idIndex in 1 ... 5 {
                         
                         let object = transaction.create(Into<TestEntity1>(configuration))
-                        object.testEntityID = NSNumber(integer: (configurationOrdinal * 100) + idIndex)
+                        object.testEntityID = NSNumber(value: (configurationOrdinal * 100) + idIndex)
                         
-                        object.testNumber = idIndex
-                        object.testDate = self.dateFormatter.dateFromString("2000-\(configurationOrdinal)-\(idIndex)T00:00:00Z")
-                        object.testBoolean = (idIndex % 2) == 1
+                        object.testNumber = NSNumber(value: idIndex)
+                        object.testDate = self.dateFormatter.date(from: "2000-\(configurationOrdinal)-\(idIndex)T00:00:00Z")
+                        object.testBoolean = NSNumber(value: (idIndex % 2) == 1)
                         object.testDecimal = NSDecimalNumber(string: "\(idIndex)")
                         
                         let string = "\(configuration ?? "nil"):TestEntity1:\(idIndex)"
                         object.testString = string
-                        object.testData = (string as NSString).dataUsingEncoding(NSUTF8StringEncoding)
+                        object.testData = (string as NSString).data(using: String.Encoding.utf8.rawValue)
                     }
                 }
                 if configuration == nil || configuration == "Config2" {
@@ -57,20 +57,20 @@ class BaseTestDataTestCase: BaseTestCase {
                     for idIndex in 1 ... 5 {
                         
                         let object = transaction.create(Into<TestEntity2>(configuration))
-                        object.testEntityID = NSNumber(integer: (configurationOrdinal * 200) + idIndex)
+                        object.testEntityID = NSNumber(value: (configurationOrdinal * 200) + idIndex)
                         
-                        object.testNumber = idIndex
-                        object.testDate = self.dateFormatter.dateFromString("2000-\(configurationOrdinal)-\(idIndex)T00:00:00Z")
-                        object.testBoolean = (idIndex % 2) == 1
+                        object.testNumber = NSNumber(value: idIndex)
+                        object.testDate = self.dateFormatter.date(from: "2000-\(configurationOrdinal)-\(idIndex)T00:00:00Z")
+                        object.testBoolean = NSNumber(value: (idIndex % 2) == 1)
                         object.testDecimal = NSDecimalNumber(string: "\(idIndex)")
                         
                         let string = "\(configuration ?? "nil"):TestEntity2:\(idIndex)"
                         object.testString = string
-                        object.testData = (string as NSString).dataUsingEncoding(NSUTF8StringEncoding)
+                        object.testData = (string as NSString).data(using: String.Encoding.utf8.rawValue)
                     }
                 }
             }
-            transaction.commitAndWait()
+            _ = transaction.commitAndWait()
         }
     }
 }

CoreStoreTests/BridgingTests.m

@@ -197,4 +197,73 @@
     XCTAssertNil(sqliteError);
 }
 
+- (void)test_ThatTransactions_BridgeCorrectly {
+    
+    [CSCoreStore
+     setDefaultStack:[[CSDataStack alloc]
+                      initWithModelName:@"Model"
+                      bundle:[NSBundle bundleForClass:[self class]]
+                      versionChain:nil]];
+    [CSCoreStore
+     addInMemoryStorageAndWait:[CSInMemoryStore new]
+     error:nil];
+    
+    {
+        CSUnsafeDataTransaction *transaction = [CSCoreStore beginUnsafe];
+        XCTAssertNotNil(transaction);
+        XCTAssert([transaction isKindOfClass:[CSUnsafeDataTransaction class]]);
+    }
+    {
+        XCTestExpectation *expectation = [self expectationWithDescription:@"sync"];
+        [CSCoreStore beginSynchronous:^(CSSynchronousDataTransaction * _Nonnull transaction) {
+            
+            XCTAssertNotNil(transaction);
+            XCTAssert([transaction isKindOfClass:[CSSynchronousDataTransaction class]]);
+            [expectation fulfill];
+        }];
+    }
+    {
+        XCTestExpectation *expectation = [self expectationWithDescription:@"async"];
+        [CSCoreStore beginAsynchronous:^(CSAsynchronousDataTransaction * _Nonnull transaction) {
+            
+            XCTAssertNotNil(transaction);
+            XCTAssert([transaction isKindOfClass:[CSAsynchronousDataTransaction class]]);
+            [expectation fulfill];
+        }];
+    }
+    [self waitForExpectationsWithTimeout:10 handler:nil];
+}
+    
+#if TARGET_OS_IOS || TARGET_OS_WATCHOS || TARGET_OS_TV
+
+- (void)test_ThatDataStacks_CanCreateCustomFetchedResultsControllers {
+    
+    [CSCoreStore
+     setDefaultStack:[[CSDataStack alloc]
+                      initWithModelName:@"Model"
+                      bundle:[NSBundle bundleForClass:[self class]]
+                      versionChain:nil]];
+    [CSCoreStore
+     addInMemoryStorageAndWait:[CSInMemoryStore new]
+     error:nil];
+    NSFetchedResultsController *controller =
+    [[CSCoreStore defaultStack]
+     createFetchedResultsControllerFrom:CSFromClass([TestEntity1 class])
+     sectionBy:[CSSectionBy keyPath:CSKeyPath(TestEntity1, testString)]
+     fetchClauses:@[CSWhereFormat(@"%K > %d", CSKeyPath(TestEntity1, testEntityID), 100),
+                    CSOrderByKeys(CSSortAscending(CSKeyPath(TestEntity1, testString)), nil),
+                    CSTweakRequest(^(NSFetchRequest *fetchRequest) { fetchRequest.fetchLimit = 10; })]];
+    
+    XCTAssertNotNil(controller);
+    XCTAssertEqualObjects(controller.fetchRequest.entity.managedObjectClassName, [[TestEntity1 class] description]);
+    XCTAssertEqualObjects(controller.sectionNameKeyPath, CSKeyPath(TestEntity1, testString));
+    XCTAssertEqualObjects(controller.fetchRequest.predicate,
+                          CSWhereFormat(@"%K > %d", CSKeyPath(TestEntity1, testEntityID), 100).predicate);
+    XCTAssertEqualObjects(controller.fetchRequest.sortDescriptors,
+                   CSOrderByKeys(CSSortAscending(CSKeyPath(TestEntity1, testString)), nil).sortDescriptors);
+    XCTAssertEqual(controller.fetchRequest.fetchLimit, 10);
+}
+    
+#endif
+
 @end

CoreStoreTests/ConvenienceTests.swift

@@ -0,0 +1,94 @@
+//
+//  ConvenienceTests.swift
+//  CoreStore
+//
+//  Copyright © 2016 John Rommel Estropia
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all
+//  copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+//  SOFTWARE.
+//
+
+@testable
+import CoreStore
+
+
+#if os(iOS) || os(watchOS) || os(tvOS)
+
+// MARK: - ConvenienceTests
+
+class ConvenienceTests: BaseTestCase {
+    
+    @objc
+    dynamic func test_ThatDataStacks_CanCreateFetchedResultsControllers() {
+
+        self.prepareStack { (stack) in
+            
+            let controller = stack.createFetchedResultsController(
+                From<TestEntity1>(),
+                SectionBy(#keyPath(TestEntity1.testString)),
+                Where("%@ > %d", #keyPath(TestEntity1.testEntityID), 100),
+                OrderBy(.ascending(#keyPath(TestEntity1.testString))),
+                Tweak { $0.fetchLimit = 10 }
+            )
+            XCTAssertEqual(controller.managedObjectContext, stack.mainContext)
+            XCTAssertEqual(controller.fetchRequest.entity?.managedObjectClassName, NSStringFromClass(TestEntity1.self))
+            XCTAssertEqual(controller.sectionNameKeyPath, #keyPath(TestEntity1.testString))
+            XCTAssertEqual(
+                controller.fetchRequest.sortDescriptors!,
+                OrderBy(.ascending(#keyPath(TestEntity1.testString))).sortDescriptors
+            )
+            XCTAssertEqual(
+                controller.fetchRequest.predicate,
+                Where("%@ > %d", #keyPath(TestEntity1.testEntityID), 100).predicate
+            )
+            XCTAssertEqual(controller.fetchRequest.fetchLimit, 10)
+        }
+    }
+    
+    @objc
+    dynamic func test_ThatUnsafeDataTransactions_CanCreateFetchedResultsControllers() {
+        
+        self.prepareStack { (stack) in
+            
+            _ = withExtendedLifetime(stack.beginUnsafe()) { (transaction: UnsafeDataTransaction) in
+                
+                let controller = transaction.createFetchedResultsController(
+                    From<TestEntity1>(),
+                    SectionBy(#keyPath(TestEntity1.testString)),
+                    Where("%@ > %d", #keyPath(TestEntity1.testEntityID), 100),
+                    OrderBy(.ascending(#keyPath(TestEntity1.testString))),
+                    Tweak { $0.fetchLimit = 10 }
+                )
+                XCTAssertEqual(controller.managedObjectContext, transaction.context)
+                XCTAssertEqual(controller.fetchRequest.entity?.managedObjectClassName, NSStringFromClass(TestEntity1.self))
+                XCTAssertEqual(controller.sectionNameKeyPath, #keyPath(TestEntity1.testString))
+                XCTAssertEqual(
+                    controller.fetchRequest.sortDescriptors!,
+                    OrderBy(.ascending(#keyPath(TestEntity1.testString))).sortDescriptors
+                )
+                XCTAssertEqual(
+                    controller.fetchRequest.predicate,
+                    Where("%@ > %d", #keyPath(TestEntity1.testEntityID), 100).predicate
+                )
+                XCTAssertEqual(controller.fetchRequest.fetchLimit, 10)
+            }
+        }
+    }
+}
+
+#endif

CoreStoreTests/ErrorTests.swift

@@ -36,33 +36,33 @@ final class ErrorTests: XCTestCase {
     @objc
     dynamic func test_ThatUnknownErrors_BridgeCorrectly() {
         
-        let error = CoreStoreError.Unknown
+        let error = CoreStoreError.unknown
         XCTAssertEqual((error as NSError).domain, CoreStoreErrorDomain)
-        XCTAssertEqual((error as NSError).code, CoreStoreErrorCode.UnknownError.rawValue)
+        XCTAssertEqual((error as NSError).code, CoreStoreErrorCode.unknownError.rawValue)
         
         let userInfo: NSDictionary = [:]
         
         let objcError = error.bridgeToObjectiveC
         XCTAssertEqual(error, objcError.bridgeToSwift)
         XCTAssertEqual(objcError.domain, CoreStoreErrorDomain)
-        XCTAssertEqual(objcError.code, CoreStoreErrorCode.UnknownError.rawValue)
-        XCTAssertEqual(objcError.userInfo, userInfo)
+        XCTAssertEqual(objcError.code, CoreStoreErrorCode.unknownError.rawValue)
+        XCTAssertEqual(objcError.userInfo as NSDictionary, userInfo)
         
         let objcError2 = objcError.bridgeToSwift.bridgeToObjectiveC
         XCTAssertEqual(error, objcError2.bridgeToSwift)
         XCTAssertEqual(objcError2.domain, CoreStoreErrorDomain)
-        XCTAssertEqual(objcError2.code, CoreStoreErrorCode.UnknownError.rawValue)
-        XCTAssertEqual(objcError2.userInfo, userInfo)
+        XCTAssertEqual(objcError2.code, CoreStoreErrorCode.unknownError.rawValue)
+        XCTAssertEqual(objcError2.userInfo as NSDictionary, userInfo)
     }
     
     @objc
     dynamic func test_ThatDifferentStorageExistsAtURLErrors_BridgeCorrectly() {
         
-        let dummyURL = NSURL(string: "file:///test1/test2.sqlite")!
+        let dummyURL = URL(string: "file:///test1/test2.sqlite")!
         
-        let error = CoreStoreError.DifferentStorageExistsAtURL(existingPersistentStoreURL: dummyURL)
+        let error = CoreStoreError.differentStorageExistsAtURL(existingPersistentStoreURL: dummyURL)
         XCTAssertEqual((error as NSError).domain, CoreStoreErrorDomain)
-        XCTAssertEqual((error as NSError).code, CoreStoreErrorCode.DifferentPersistentStoreExistsAtURL.rawValue)
+        XCTAssertEqual((error as NSError).code, CoreStoreErrorCode.differentStorageExistsAtURL.rawValue)
         
         let userInfo: NSDictionary = [
             "existingPersistentStoreURL": dummyURL
@@ -70,27 +70,27 @@ final class ErrorTests: XCTestCase {
         let objcError = error.bridgeToObjectiveC
         XCTAssertEqual(error, objcError.bridgeToSwift)
         XCTAssertEqual(objcError.domain, CoreStoreErrorDomain)
-        XCTAssertEqual(objcError.code, CoreStoreErrorCode.DifferentPersistentStoreExistsAtURL.rawValue)
-        XCTAssertEqual(objcError.userInfo, userInfo)
+        XCTAssertEqual(objcError.code, CoreStoreErrorCode.differentStorageExistsAtURL.rawValue)
+        XCTAssertEqual(objcError.userInfo as NSDictionary, userInfo)
         
         let objcError2 = objcError.bridgeToSwift.bridgeToObjectiveC
         XCTAssertEqual(error, objcError2.bridgeToSwift)
         XCTAssertEqual(objcError2.domain, CoreStoreErrorDomain)
-        XCTAssertEqual(objcError2.code, CoreStoreErrorCode.DifferentPersistentStoreExistsAtURL.rawValue)
-        XCTAssertEqual(objcError2.userInfo, userInfo)
+        XCTAssertEqual(objcError2.code, CoreStoreErrorCode.differentStorageExistsAtURL.rawValue)
+        XCTAssertEqual(objcError2.userInfo as NSDictionary, userInfo)
     }
     
     @objc
     dynamic func test_ThatMappingModelNotFoundErrors_BridgeCorrectly() {
         
-        let dummyURL = NSURL(string: "file:///test1/test2.sqlite")!
+        let dummyURL = URL(string: "file:///test1/test2.sqlite")!
         
-        let model = NSManagedObjectModel.fromBundle(NSBundle(forClass: self.dynamicType), modelName: "Model")
+        let model = NSManagedObjectModel.fromBundle(Bundle(for: type(of: self)), modelName: "Model")
         let version = "1.0.0"
         
-        let error = CoreStoreError.MappingModelNotFound(localStoreURL: dummyURL, targetModel: model, targetModelVersion: version)
+        let error = CoreStoreError.mappingModelNotFound(localStoreURL: dummyURL, targetModel: model, targetModelVersion: version)
         XCTAssertEqual((error as NSError).domain, CoreStoreErrorDomain)
-        XCTAssertEqual((error as NSError).code, CoreStoreErrorCode.MappingModelNotFound.rawValue)
+        XCTAssertEqual((error as NSError).code, CoreStoreErrorCode.mappingModelNotFound.rawValue)
         
         let userInfo: NSDictionary = [
             "localStoreURL": dummyURL,
@@ -100,24 +100,24 @@ final class ErrorTests: XCTestCase {
         let objcError = error.bridgeToObjectiveC
         XCTAssertEqual(error, objcError.bridgeToSwift)
         XCTAssertEqual(objcError.domain, CoreStoreErrorDomain)
-        XCTAssertEqual(objcError.code, CoreStoreErrorCode.MappingModelNotFound.rawValue)
-        XCTAssertEqual(objcError.userInfo, userInfo)
+        XCTAssertEqual(objcError.code, CoreStoreErrorCode.mappingModelNotFound.rawValue)
+        XCTAssertEqual(objcError.userInfo as NSDictionary, userInfo)
         
         let objcError2 = objcError.bridgeToSwift.bridgeToObjectiveC
         XCTAssertEqual(error, objcError2.bridgeToSwift)
         XCTAssertEqual(objcError2.domain, CoreStoreErrorDomain)
-        XCTAssertEqual(objcError2.code, CoreStoreErrorCode.MappingModelNotFound.rawValue)
-        XCTAssertEqual(objcError2.userInfo, userInfo)
+        XCTAssertEqual(objcError2.code, CoreStoreErrorCode.mappingModelNotFound.rawValue)
+        XCTAssertEqual(objcError2.userInfo as NSDictionary, userInfo)
     }
     
     @objc
     dynamic func test_ThatProgressiveMigrationRequiredErrors_BridgeCorrectly() {
         
-        let dummyURL = NSURL(string: "file:///test1/test2.sqlite")!
+        let dummyURL = URL(string: "file:///test1/test2.sqlite")!
         
-        let error = CoreStoreError.ProgressiveMigrationRequired(localStoreURL: dummyURL)
+        let error = CoreStoreError.progressiveMigrationRequired(localStoreURL: dummyURL)
         XCTAssertEqual((error as NSError).domain, CoreStoreErrorDomain)
-        XCTAssertEqual((error as NSError).code, CoreStoreErrorCode.ProgressiveMigrationRequired.rawValue)
+        XCTAssertEqual((error as NSError).code, CoreStoreErrorCode.progressiveMigrationRequired.rawValue)
         
         let userInfo: NSDictionary = [
             "localStoreURL": dummyURL
@@ -125,14 +125,14 @@ final class ErrorTests: XCTestCase {
         let objcError = error.bridgeToObjectiveC
         XCTAssertEqual(error, objcError.bridgeToSwift)
         XCTAssertEqual(objcError.domain, CoreStoreErrorDomain)
-        XCTAssertEqual(objcError.code, CoreStoreErrorCode.ProgressiveMigrationRequired.rawValue)
-        XCTAssertEqual(objcError.userInfo, userInfo)
+        XCTAssertEqual(objcError.code, CoreStoreErrorCode.progressiveMigrationRequired.rawValue)
+        XCTAssertEqual(objcError.userInfo as NSDictionary, userInfo)
         
         let objcError2 = objcError.bridgeToSwift.bridgeToObjectiveC
         XCTAssertEqual(error, objcError2.bridgeToSwift)
         XCTAssertEqual(objcError2.domain, CoreStoreErrorDomain)
-        XCTAssertEqual(objcError2.code, CoreStoreErrorCode.ProgressiveMigrationRequired.rawValue)
-        XCTAssertEqual(objcError2.userInfo, userInfo)
+        XCTAssertEqual(objcError2.code, CoreStoreErrorCode.progressiveMigrationRequired.rawValue)
+        XCTAssertEqual(objcError2.userInfo as NSDictionary, userInfo)
     }
     
     @objc
@@ -144,12 +144,12 @@ final class ErrorTests: XCTestCase {
             userInfo: [
                 "key1": "value1",
                 "key2": 2,
-                "key3": NSDate()
+                "key3": Date()
             ]
         )
         let error = CoreStoreError(internalError)
         XCTAssertEqual((error as NSError).domain, CoreStoreErrorDomain)
-        XCTAssertEqual((error as NSError).code, CoreStoreErrorCode.InternalError.rawValue)
+        XCTAssertEqual((error as NSError).code, CoreStoreErrorCode.internalError.rawValue)
         
         let userInfo: NSDictionary = [
             "NSError": internalError
@@ -157,13 +157,13 @@ final class ErrorTests: XCTestCase {
         let objcError = error.bridgeToObjectiveC
         XCTAssertEqual(error, objcError.bridgeToSwift)
         XCTAssertEqual(objcError.domain, CoreStoreErrorDomain)
-        XCTAssertEqual(objcError.code, CoreStoreErrorCode.InternalError.rawValue)
-        XCTAssertEqual(objcError.userInfo, userInfo)
+        XCTAssertEqual(objcError.code, CoreStoreErrorCode.internalError.rawValue)
+        XCTAssertEqual(objcError.userInfo as NSDictionary, userInfo)
         
         let objcError2 = objcError.bridgeToSwift.bridgeToObjectiveC
         XCTAssertEqual(error, objcError2.bridgeToSwift)
         XCTAssertEqual(objcError2.domain, CoreStoreErrorDomain)
-        XCTAssertEqual(objcError2.code, CoreStoreErrorCode.InternalError.rawValue)
-        XCTAssertEqual(objcError2.userInfo, userInfo)
+        XCTAssertEqual(objcError2.code, CoreStoreErrorCode.internalError.rawValue)
+        XCTAssertEqual(objcError2.userInfo as NSDictionary, userInfo)
     }
 }

CoreStoreTests/FromTests.swift

@@ -74,33 +74,33 @@ final class FromTests: BaseTestCase {
                 
                 let from = From<TestEntity1>()
                 
-                let request = NSFetchRequest()
+                let request = CoreStoreFetchRequest()
                 let storesFound = from.applyToFetchRequest(request, context: dataStack.mainContext)
                 XCTAssertTrue(storesFound)
                 XCTAssertNotNil(request.entity)
-                XCTAssertNotNil(request.affectedStores)
+                XCTAssertNotNil(request.safeAffectedStores)
                 
                 XCTAssert(from.entityClass == NSClassFromString(request.entity!.managedObjectClassName))
                 
-                let affectedConfigurations = request.affectedStores!.map { $0.configurationName }
+                let affectedConfigurations = request.safeAffectedStores!.map { $0.configurationName }
                 XCTAssertEqual(affectedConfigurations, ["PF_DEFAULT_CONFIGURATION_NAME"])
             }
             do {
                 
                 let from = From<TestEntity1>("Config1")
                 
-                let request = NSFetchRequest()
-                let storesFound = self.expectLogger([.LogWarning]) {
+                let request = CoreStoreFetchRequest()
+                let storesFound = self.expectLogger([.logWarning]) {
                     
                     from.applyToFetchRequest(request, context: dataStack.mainContext)
                 }
                 XCTAssertFalse(storesFound)
                 XCTAssertNotNil(request.entity)
-                XCTAssertNotNil(request.affectedStores)
+                XCTAssertNotNil(request.safeAffectedStores)
                 
                 XCTAssert(from.entityClass == NSClassFromString(request.entity!.managedObjectClassName))
                 
-                let affectedConfigurations = request.affectedStores!.map { $0.configurationName }
+                let affectedConfigurations = request.safeAffectedStores!.map { $0.configurationName }
                 XCTAssertTrue(affectedConfigurations.isEmpty)
             }
         }
@@ -115,102 +115,102 @@ final class FromTests: BaseTestCase {
                 
                 let from = From<TestEntity1>()
                 
-                let request = NSFetchRequest()
+                let request = CoreStoreFetchRequest()
                 let storesFound = from.applyToFetchRequest(request, context: dataStack.mainContext)
                 XCTAssertTrue(storesFound)
                 XCTAssertNotNil(request.entity)
-                XCTAssertNotNil(request.affectedStores)
+                XCTAssertNotNil(request.safeAffectedStores)
                 
                 XCTAssert(from.entityClass == NSClassFromString(request.entity!.managedObjectClassName))
                 
-                let affectedConfigurations = request.affectedStores!.map { $0.configurationName }
+                let affectedConfigurations = request.safeAffectedStores!.map { $0.configurationName }
                 XCTAssertEqual(affectedConfigurations, ["Config1"])
             }
             do {
                 
                 let from = From<TestEntity1>("Config1")
                 
-                let request = NSFetchRequest()
+                let request = CoreStoreFetchRequest()
                 let storesFound = from.applyToFetchRequest(request, context: dataStack.mainContext)
                 XCTAssertTrue(storesFound)
                 XCTAssertNotNil(request.entity)
-                XCTAssertNotNil(request.affectedStores)
+                XCTAssertNotNil(request.safeAffectedStores)
                 
                 XCTAssert(from.entityClass == NSClassFromString(request.entity!.managedObjectClassName))
                 
-                let affectedConfigurations = request.affectedStores!.map { $0.configurationName }
+                let affectedConfigurations = request.safeAffectedStores!.map { $0.configurationName }
                 XCTAssertEqual(affectedConfigurations, ["Config1"])
             }
             do {
                 
                 let from = From<TestEntity1>("Config2")
                 
-                let request = NSFetchRequest()
-                let storesFound = self.expectLogger([.LogWarning]) {
+                let request = CoreStoreFetchRequest()
+                let storesFound = self.expectLogger([.logWarning]) {
                     
                     from.applyToFetchRequest(request, context: dataStack.mainContext)
                 }
                 XCTAssertFalse(storesFound)
                 XCTAssertNotNil(request.entity)
-                XCTAssertNotNil(request.affectedStores)
+                XCTAssertNotNil(request.safeAffectedStores)
                 
                 XCTAssert(from.entityClass == NSClassFromString(request.entity!.managedObjectClassName))
                 
-                let affectedConfigurations = request.affectedStores!.map { $0.configurationName }
+                let affectedConfigurations = request.safeAffectedStores!.map { $0.configurationName }
                 XCTAssertTrue(affectedConfigurations.isEmpty)
             }
             do {
                 
                 let from = From<TestEntity2>()
                 
-                let request = NSFetchRequest()
-                let storesFound = self.expectLogger([.LogWarning]) {
+                let request = CoreStoreFetchRequest()
+                let storesFound = self.expectLogger([.logWarning]) {
                     
                     from.applyToFetchRequest(request, context: dataStack.mainContext)
                 }
                 XCTAssertFalse(storesFound)
                 XCTAssertNotNil(request.entity)
-                XCTAssertNotNil(request.affectedStores)
+                XCTAssertNotNil(request.safeAffectedStores)
                 
                 XCTAssert(from.entityClass == NSClassFromString(request.entity!.managedObjectClassName))
                 
-                let affectedConfigurations = request.affectedStores!.map { $0.configurationName }
+                let affectedConfigurations = request.safeAffectedStores!.map { $0.configurationName }
                 XCTAssertTrue(affectedConfigurations.isEmpty)
             }
             do {
                 
                 let from = From<TestEntity2>("Config1")
                 
-                let request = NSFetchRequest()
-                let storesFound = self.expectLogger([.LogWarning]) {
+                let request = CoreStoreFetchRequest()
+                let storesFound = self.expectLogger([.logWarning]) {
                     
                     from.applyToFetchRequest(request, context: dataStack.mainContext)
                 }
                 XCTAssertFalse(storesFound)
                 XCTAssertNotNil(request.entity)
-                XCTAssertNotNil(request.affectedStores)
+                XCTAssertNotNil(request.safeAffectedStores)
                 
                 XCTAssert(from.entityClass == NSClassFromString(request.entity!.managedObjectClassName))
                 
-                let affectedConfigurations = request.affectedStores!.map { $0.configurationName }
+                let affectedConfigurations = request.safeAffectedStores!.map { $0.configurationName }
                 XCTAssertTrue(affectedConfigurations.isEmpty)
             }
             do {
                 
                 let from = From<TestEntity2>("Config2")
                 
-                let request = NSFetchRequest()
-                let storesFound = self.expectLogger([.LogWarning]) {
+                let request = CoreStoreFetchRequest()
+                let storesFound = self.expectLogger([.logWarning]) {
                     
                     from.applyToFetchRequest(request, context: dataStack.mainContext)
                 }
                 XCTAssertFalse(storesFound)
                 XCTAssertNotNil(request.entity)
-                XCTAssertNotNil(request.affectedStores)
+                XCTAssertNotNil(request.safeAffectedStores)
                 
                 XCTAssert(from.entityClass == NSClassFromString(request.entity!.managedObjectClassName))
                 
-                let affectedConfigurations = request.affectedStores!.map { $0.configurationName }
+                let affectedConfigurations = request.safeAffectedStores!.map { $0.configurationName }
                 XCTAssertTrue(affectedConfigurations.isEmpty)
             }
         }
@@ -225,99 +225,99 @@ final class FromTests: BaseTestCase {
                 
                 let from = From<TestEntity1>()
                 
-                let request = NSFetchRequest()
+                let request = CoreStoreFetchRequest()
                 let storesFound = from.applyToFetchRequest(request, context: dataStack.mainContext)
                 XCTAssertTrue(storesFound)
                 XCTAssertNotNil(request.entity)
-                XCTAssertNotNil(request.affectedStores)
+                XCTAssertNotNil(request.safeAffectedStores)
                 
                 XCTAssert(from.entityClass == NSClassFromString(request.entity!.managedObjectClassName))
                 
-                let affectedConfigurations = request.affectedStores!.map { $0.configurationName }
+                let affectedConfigurations = request.safeAffectedStores!.map { $0.configurationName }
                 XCTAssertEqual(Set(affectedConfigurations), ["PF_DEFAULT_CONFIGURATION_NAME", "Config1"] as Set)
             }
             do {
                 
                 let from = From<TestEntity1>("Config1")
                 
-                let request = NSFetchRequest()
+                let request = CoreStoreFetchRequest()
                 let storesFound = from.applyToFetchRequest(request, context: dataStack.mainContext)
                 XCTAssertTrue(storesFound)
                 XCTAssertNotNil(request.entity)
-                XCTAssertNotNil(request.affectedStores)
+                XCTAssertNotNil(request.safeAffectedStores)
                 
                 XCTAssert(from.entityClass == NSClassFromString(request.entity!.managedObjectClassName))
                 
-                let affectedConfigurations = request.affectedStores!.map { $0.configurationName }
+                let affectedConfigurations = request.safeAffectedStores!.map { $0.configurationName }
                 XCTAssertEqual(affectedConfigurations, ["Config1"])
             }
             do {
                 
                 let from = From<TestEntity1>("Config2")
                 
-                let request = NSFetchRequest()
-                let storesFound = self.expectLogger([.LogWarning]) {
+                let request = CoreStoreFetchRequest()
+                let storesFound = self.expectLogger([.logWarning]) {
                     
                     from.applyToFetchRequest(request, context: dataStack.mainContext)
                 }
                 XCTAssertFalse(storesFound)
                 XCTAssertNotNil(request.entity)
-                XCTAssertNotNil(request.affectedStores)
+                XCTAssertNotNil(request.safeAffectedStores)
                 
                 XCTAssert(from.entityClass == NSClassFromString(request.entity!.managedObjectClassName))
                 
-                let affectedConfigurations = request.affectedStores!.map { $0.configurationName }
+                let affectedConfigurations = request.safeAffectedStores!.map { $0.configurationName }
                 XCTAssertTrue(affectedConfigurations.isEmpty)
             }
             do {
                 
                 let from = From<TestEntity2>()
                 
-                let request = NSFetchRequest()
+                let request = CoreStoreFetchRequest()
                 let storesFound = from.applyToFetchRequest(request, context: dataStack.mainContext)
                 XCTAssertTrue(storesFound)
                 XCTAssertNotNil(request.entity)
-                XCTAssertNotNil(request.affectedStores)
+                XCTAssertNotNil(request.safeAffectedStores)
                 
                 XCTAssert(from.entityClass == NSClassFromString(request.entity!.managedObjectClassName))
                 
-                let affectedConfigurations = request.affectedStores!.map { $0.configurationName }
+                let affectedConfigurations = request.safeAffectedStores!.map { $0.configurationName }
                 XCTAssertEqual(affectedConfigurations, ["PF_DEFAULT_CONFIGURATION_NAME"])
             }
             do {
                 
                 let from = From<TestEntity2>("Config1")
                 
-                let request = NSFetchRequest()
-                let storesFound = self.expectLogger([.LogWarning]) {
+                let request = CoreStoreFetchRequest()
+                let storesFound = self.expectLogger([.logWarning]) {
                     
                     from.applyToFetchRequest(request, context: dataStack.mainContext)
                 }
                 XCTAssertFalse(storesFound)
                 XCTAssertNotNil(request.entity)
-                XCTAssertNotNil(request.affectedStores)
+                XCTAssertNotNil(request.safeAffectedStores)
                 
                 XCTAssert(from.entityClass == NSClassFromString(request.entity!.managedObjectClassName))
                 
-                let affectedConfigurations = request.affectedStores!.map { $0.configurationName }
+                let affectedConfigurations = request.safeAffectedStores!.map { $0.configurationName }
                 XCTAssertTrue(affectedConfigurations.isEmpty)
             }
             do {
                 
                 let from = From<TestEntity2>("Config2")
                 
-                let request = NSFetchRequest()
-                let storesFound = self.expectLogger([.LogWarning]) {
+                let request = CoreStoreFetchRequest()
+                let storesFound = self.expectLogger([.logWarning]) {
                     
                     from.applyToFetchRequest(request, context: dataStack.mainContext)
                 }
                 XCTAssertFalse(storesFound)
                 XCTAssertNotNil(request.entity)
-                XCTAssertNotNil(request.affectedStores)
+                XCTAssertNotNil(request.safeAffectedStores)
                 
                 XCTAssert(from.entityClass == NSClassFromString(request.entity!.managedObjectClassName))
                 
-                let affectedConfigurations = request.affectedStores!.map { $0.configurationName }
+                let affectedConfigurations = request.safeAffectedStores!.map { $0.configurationName }
                 XCTAssertTrue(affectedConfigurations.isEmpty)
             }
         }
@@ -332,96 +332,96 @@ final class FromTests: BaseTestCase {
                 
                 let from = From<TestEntity1>()
                 
-                let request = NSFetchRequest()
+                let request = CoreStoreFetchRequest()
                 let storesFound = from.applyToFetchRequest(request, context: dataStack.mainContext)
                 XCTAssertTrue(storesFound)
                 XCTAssertNotNil(request.entity)
-                XCTAssertNotNil(request.affectedStores)
+                XCTAssertNotNil(request.safeAffectedStores)
                 
                 XCTAssert(from.entityClass == NSClassFromString(request.entity!.managedObjectClassName))
                 
-                let affectedConfigurations = request.affectedStores!.map { $0.configurationName }
+                let affectedConfigurations = request.safeAffectedStores!.map { $0.configurationName }
                 XCTAssertEqual(affectedConfigurations, ["Config1"])
             }
             do {
                 
                 let from = From<TestEntity1>("Config1")
                 
-                let request = NSFetchRequest()
+                let request = CoreStoreFetchRequest()
                 let storesFound = from.applyToFetchRequest(request, context: dataStack.mainContext)
                 XCTAssertTrue(storesFound)
                 XCTAssertNotNil(request.entity)
-                XCTAssertNotNil(request.affectedStores)
+                XCTAssertNotNil(request.safeAffectedStores)
                 
                 XCTAssert(from.entityClass == NSClassFromString(request.entity!.managedObjectClassName))
                 
-                let affectedConfigurations = request.affectedStores!.map { $0.configurationName }
+                let affectedConfigurations = request.safeAffectedStores!.map { $0.configurationName }
                 XCTAssertEqual(affectedConfigurations, ["Config1"])
             }
             do {
                 
                 let from = From<TestEntity1>("Config2")
                 
-                let request = NSFetchRequest()
-                let storesFound = self.expectLogger([.LogWarning]) {
+                let request = CoreStoreFetchRequest()
+                let storesFound = self.expectLogger([.logWarning]) {
                     
                     from.applyToFetchRequest(request, context: dataStack.mainContext)
                 }
                 XCTAssertFalse(storesFound)
                 XCTAssertNotNil(request.entity)
-                XCTAssertNotNil(request.affectedStores)
+                XCTAssertNotNil(request.safeAffectedStores)
                 
                 XCTAssert(from.entityClass == NSClassFromString(request.entity!.managedObjectClassName))
                 
-                let affectedConfigurations = request.affectedStores!.map { $0.configurationName }
+                let affectedConfigurations = request.safeAffectedStores!.map { $0.configurationName }
                 XCTAssertTrue(affectedConfigurations.isEmpty)
             }
             do {
                 
                 let from = From<TestEntity2>()
                 
-                let request = NSFetchRequest()
+                let request = CoreStoreFetchRequest()
                 let storesFound = from.applyToFetchRequest(request, context: dataStack.mainContext)
                 XCTAssertTrue(storesFound)
                 XCTAssertNotNil(request.entity)
-                XCTAssertNotNil(request.affectedStores)
+                XCTAssertNotNil(request.safeAffectedStores)
                 
                 XCTAssert(from.entityClass == NSClassFromString(request.entity!.managedObjectClassName))
                 
-                let affectedConfigurations = request.affectedStores!.map { $0.configurationName }
+                let affectedConfigurations = request.safeAffectedStores!.map { $0.configurationName }
                 XCTAssertEqual(affectedConfigurations, ["Config2"])
             }
             do {
                 
                 let from = From<TestEntity2>("Config1")
                 
-                let request = NSFetchRequest()
-                let storesFound = self.expectLogger([.LogWarning]) {
+                let request = CoreStoreFetchRequest()
+                let storesFound = self.expectLogger([.logWarning]) {
                     
                     from.applyToFetchRequest(request, context: dataStack.mainContext)
                 }
                 XCTAssertFalse(storesFound)
                 XCTAssertNotNil(request.entity)
-                XCTAssertNotNil(request.affectedStores)
+                XCTAssertNotNil(request.safeAffectedStores)
                 
                 XCTAssert(from.entityClass == NSClassFromString(request.entity!.managedObjectClassName))
                 
-                let affectedConfigurations = request.affectedStores!.map { $0.configurationName }
+                let affectedConfigurations = request.safeAffectedStores!.map { $0.configurationName }
                 XCTAssertTrue(affectedConfigurations.isEmpty)
             }
             do {
                 
                 let from = From<TestEntity2>("Config2")
                 
-                let request = NSFetchRequest()
+                let request = CoreStoreFetchRequest()
                 let storesFound = from.applyToFetchRequest(request, context: dataStack.mainContext)
                 XCTAssertTrue(storesFound)
                 XCTAssertNotNil(request.entity)
-                XCTAssertNotNil(request.affectedStores)
+                XCTAssertNotNil(request.safeAffectedStores)
                 
                 XCTAssert(from.entityClass == NSClassFromString(request.entity!.managedObjectClassName))
                 
-                let affectedConfigurations = request.affectedStores!.map { $0.configurationName }
+                let affectedConfigurations = request.safeAffectedStores!.map { $0.configurationName }
                 XCTAssertEqual(affectedConfigurations, ["Config2"])
             }
         }

CoreStoreTests/GroupByTests.swift

@@ -66,10 +66,10 @@ final class GroupByTests: BaseTestCase {
         
         self.prepareStack { (dataStack) in
             
-            let groupBy = GroupBy("testString")
+            let groupBy = GroupBy(#keyPath(TestEntity1.testString))
             
-            let request = NSFetchRequest()
-            _ = From(TestEntity1).applyToFetchRequest(request, context: dataStack.mainContext)
+            let request = CoreStoreFetchRequest()
+            _ = From<TestEntity1>().applyToFetchRequest(request, context: dataStack.mainContext)
             groupBy.applyToFetchRequest(request)
             
             XCTAssertNotNil(request.propertiesToGroupBy)

CoreStoreTests/IntoTests.swift

@@ -58,7 +58,7 @@ final class IntoTests: XCTestCase {
         }
         do {
             
-            let into = Into(TestEntity1)
+            let into = Into<TestEntity1>()
             XCTAssert(into.entityClass === TestEntity1.self)
             XCTAssertNil(into.configuration)
             XCTAssertTrue(into.inferStoreIfPossible)
@@ -108,14 +108,14 @@ final class IntoTests: XCTestCase {
         do {
             
             let into = Into<TestEntity1>()
-            XCTAssertEqual(into, Into(TestEntity1))
+            XCTAssertEqual(into, Into<TestEntity1>())
             XCTAssertEqual(into, Into(TestEntity1.self as AnyClass))
             XCTAssertFalse(into == Into<TestEntity2>())
             XCTAssertNotEqual(into, Into<TestEntity1>("Config1"))
         }
         do {
             
-            let into = Into(TestEntity1)
+            let into = Into<TestEntity1>()
             XCTAssertEqual(into, Into<TestEntity1>())
             XCTAssertEqual(into, Into(TestEntity1.self as AnyClass))
             XCTAssertFalse(into == Into<TestEntity2>())
@@ -125,7 +125,7 @@ final class IntoTests: XCTestCase {
             
             let into = Into(TestEntity1.self as AnyClass)
             XCTAssert(into == Into<TestEntity1>())
-            XCTAssertEqual(into, Into(TestEntity1))
+            XCTAssertEqual(into, Into(TestEntity1.self))
             XCTAssertFalse(into == Into<TestEntity2>())
             XCTAssertFalse(into == Into<TestEntity1>("Config1"))
         }

CoreStoreTests/ListObserverTests.swift

@@ -35,6 +35,21 @@ import CoreStore
 
 class ListObserverTests: BaseTestDataTestCase {
     
+    @objc
+    dynamic func test_ThatListObservers_CanDowncast() {
+        
+        self.prepareStack { (stack) in
+            
+            let monitor = stack.monitorSectionedList(
+                From<TestEntity1>(),
+                SectionBy(#keyPath(TestEntity1.testBoolean)),
+                OrderBy(.ascending(#keyPath(TestEntity1.testBoolean)), .ascending(#keyPath(TestEntity1.testEntityID)))
+            )
+            let downcast = monitor.downcast()
+            XCTAssertTrue(monitor == downcast)
+        }
+    }
+    
     @objc
     dynamic func test_ThatListObservers_CanReceiveInsertNotifications() {
         
@@ -42,9 +57,9 @@ class ListObserverTests: BaseTestDataTestCase {
             
             let observer = TestListObserver()
             let monitor = stack.monitorSectionedList(
-                From(TestEntity1),
-                SectionBy("testBoolean"),
-                OrderBy(.Ascending("testBoolean"), .Ascending("testEntityID"))
+                From<TestEntity1>(),
+                SectionBy(#keyPath(TestEntity1.testBoolean)),
+                OrderBy(.ascending(#keyPath(TestEntity1.testBoolean)), .ascending(#keyPath(TestEntity1.testEntityID)))
             )
             monitor.addObserver(observer)
             
@@ -54,13 +69,13 @@ class ListObserverTests: BaseTestDataTestCase {
             
             var events = 0
             
-            let willChangeExpectation = self.expectationForNotification(
-                "listMonitorWillChange:",
+            let willChangeExpectation = self.expectation(
+                forNotification: "listMonitorWillChange:",
                 object: observer,
                 handler: { (note) -> Bool in
                     
                     XCTAssertEqual(events, 0)
-                    XCTAssertEqual((note.userInfo ?? [:]), NSDictionary())
+                    XCTAssertEqual((note.userInfo as NSDictionary?) ?? [:], NSDictionary())
                     defer {
                         
                         events += 1
@@ -68,14 +83,14 @@ class ListObserverTests: BaseTestDataTestCase {
                     return events == 0
                 }
             )
-            let didInsertSectionExpectation = self.expectationForNotification(
-                "listMonitor:didInsertSection:toSectionIndex:",
+            let didInsertSectionExpectation = self.expectation(
+                forNotification: "listMonitor:didInsertSection:toSectionIndex:",
                 object: observer,
                 handler: { (note) -> Bool in
                     
                     XCTAssertEqual(events, 1)
                     XCTAssertEqual(
-                        (note.userInfo ?? [:]),
+                        ((note.userInfo as NSDictionary?) ?? [:]),
                         [
                             "sectionInfo": monitor.sectionInfoAtIndex(0),
                             "sectionIndex": 0
@@ -88,8 +103,8 @@ class ListObserverTests: BaseTestDataTestCase {
                     return events == 1
                 }
             )
-            let didInsertObjectExpectation = self.expectationForNotification(
-                "listMonitor:didInsertObject:toIndexPath:",
+            let didInsertObjectExpectation = self.expectation(
+                forNotification: "listMonitor:didInsertObject:toIndexPath:",
                 object: observer,
                 handler: { (note) -> Bool in
                     
@@ -98,7 +113,7 @@ class ListObserverTests: BaseTestDataTestCase {
                     let userInfo = note.userInfo
                     XCTAssertNotNil(userInfo)
                     XCTAssertEqual(
-                        Set(((userInfo as? [String: AnyObject]) ?? [:]).keys),
+                        Set(userInfo?.keys.map({ $0 as! String }) ?? []),
                         ["indexPath", "object"]
                     )
                     
@@ -107,12 +122,12 @@ class ListObserverTests: BaseTestDataTestCase {
                     XCTAssertEqual(indexPath?.row, 0)
                     
                     let object = userInfo?["object"] as? TestEntity1
-                    XCTAssertEqual(object?.testBoolean, NSNumber(bool: true))
-                    XCTAssertEqual(object?.testNumber, NSNumber(integer: 1))
+                    XCTAssertEqual(object?.testBoolean, NSNumber(value: true))
+                    XCTAssertEqual(object?.testNumber, NSNumber(value: 1))
                     XCTAssertEqual(object?.testDecimal, NSDecimalNumber(string: "1"))
                     XCTAssertEqual(object?.testString, "nil:TestEntity1:1")
-                    XCTAssertEqual(object?.testData, ("nil:TestEntity1:1" as NSString).dataUsingEncoding(NSUTF8StringEncoding)!)
-                    XCTAssertEqual(object?.testDate, self.dateFormatter.dateFromString("2000-01-01T00:00:00Z")!)
+                    XCTAssertEqual(object?.testData, ("nil:TestEntity1:1" as NSString).data(using: String.Encoding.utf8.rawValue)!)
+                    XCTAssertEqual(object?.testDate, self.dateFormatter.date(from: "2000-01-01T00:00:00Z")!)
                     defer {
                         
                         events += 1
@@ -120,12 +135,12 @@ class ListObserverTests: BaseTestDataTestCase {
                     return events == 2
                 }
             )
-            let didChangeExpectation = self.expectationForNotification(
-                "listMonitorDidChange:",
+            let didChangeExpectation = self.expectation(
+                forNotification: "listMonitorDidChange:",
                 object: observer,
                 handler: { (note) -> Bool in
                     
-                    XCTAssertEqual((note.userInfo ?? [:]), NSDictionary())
+                    XCTAssertEqual((note.userInfo as NSDictionary?) ?? [:], NSDictionary())
                     defer {
                         
                         events += 1
@@ -133,26 +148,26 @@ class ListObserverTests: BaseTestDataTestCase {
                     return events == 3
                 }
             )
-            let saveExpectation = self.expectationWithDescription("save")
+            let saveExpectation = self.expectation(description: "save")
             stack.beginAsynchronous { (transaction) in
                 
-                let object = transaction.create(Into(TestEntity1))
-                object.testBoolean = NSNumber(bool: true)
-                object.testNumber = NSNumber(integer: 1)
+                let object = transaction.create(Into<TestEntity1>())
+                object.testBoolean = NSNumber(value: true)
+                object.testNumber = NSNumber(value: 1)
                 object.testDecimal = NSDecimalNumber(string: "1")
                 object.testString = "nil:TestEntity1:1"
-                object.testData = ("nil:TestEntity1:1" as NSString).dataUsingEncoding(NSUTF8StringEncoding)!
-                object.testDate = self.dateFormatter.dateFromString("2000-01-01T00:00:00Z")!
+                object.testData = ("nil:TestEntity1:1" as NSString).data(using: String.Encoding.utf8.rawValue)!
+                object.testDate = self.dateFormatter.date(from: "2000-01-01T00:00:00Z")!
                 
                 transaction.commit { (result) in
                     
                     switch result {
                         
-                    case .Success(let hasChanges):
+                    case .success(let hasChanges):
                         XCTAssertTrue(hasChanges)
                         saveExpectation.fulfill()
                         
-                    case .Failure:
+                    case .failure:
                         XCTFail()
                     }
                 }
@@ -170,9 +185,9 @@ class ListObserverTests: BaseTestDataTestCase {
             
             let observer = TestListObserver()
             let monitor = stack.monitorSectionedList(
-                From(TestEntity1),
-                SectionBy("testBoolean"),
-                OrderBy(.Ascending("testBoolean"), .Ascending("testEntityID"))
+                From<TestEntity1>(),
+                SectionBy(#keyPath(TestEntity1.testBoolean)),
+                OrderBy(.ascending(#keyPath(TestEntity1.testBoolean)), .ascending(#keyPath(TestEntity1.testEntityID)))
             )
             monitor.addObserver(observer)
             
@@ -185,13 +200,13 @@ class ListObserverTests: BaseTestDataTestCase {
             
             var events = 0
             
-            let willChangeExpectation = self.expectationForNotification(
-                "listMonitorWillChange:",
+            let willChangeExpectation = self.expectation(
+                forNotification: "listMonitorWillChange:",
                 object: observer,
                 handler: { (note) -> Bool in
                     
                     XCTAssertEqual(events, 0)
-                    XCTAssertEqual((note.userInfo ?? [:]), NSDictionary())
+                    XCTAssertEqual((note.userInfo as NSDictionary?) ?? [:], NSDictionary())
                     defer {
                         
                         events += 1
@@ -201,8 +216,8 @@ class ListObserverTests: BaseTestDataTestCase {
             )
             for _ in 1 ... 2 {
                 
-                let didUpdateObjectExpectation = self.expectationForNotification(
-                    "listMonitor:didUpdateObject:atIndexPath:",
+                let didUpdateObjectExpectation = self.expectation(
+                    forNotification: "listMonitor:didUpdateObject:atIndexPath:",
                     object: observer,
                     handler: { (note) -> Bool in
                         
@@ -211,7 +226,7 @@ class ListObserverTests: BaseTestDataTestCase {
                         let userInfo = note.userInfo
                         XCTAssertNotNil(userInfo)
                         XCTAssertEqual(
-                            Set(((userInfo as? [String: AnyObject]) ?? [:]).keys),
+                            Set(userInfo?.keys.map({ $0 as! String }) ?? []),
                             ["indexPath", "object"]
                         )
                         
@@ -220,27 +235,27 @@ class ListObserverTests: BaseTestDataTestCase {
                         
                         switch object?.testEntityID {
                             
-                        case NSNumber(integer: 101)?:
+                        case NSNumber(value: 101)?:
                             XCTAssertEqual(indexPath?.section, 1)
                             XCTAssertEqual(indexPath?.row, 0)
                             
-                            XCTAssertEqual(object?.testBoolean, NSNumber(bool: true))
-                            XCTAssertEqual(object?.testNumber, NSNumber(integer: 11))
+                            XCTAssertEqual(object?.testBoolean, NSNumber(value: true))
+                            XCTAssertEqual(object?.testNumber, NSNumber(value: 11))
                             XCTAssertEqual(object?.testDecimal, NSDecimalNumber(string: "11"))
                             XCTAssertEqual(object?.testString, "nil:TestEntity1:11")
-                            XCTAssertEqual(object?.testData, ("nil:TestEntity1:11" as NSString).dataUsingEncoding(NSUTF8StringEncoding)!)
-                            XCTAssertEqual(object?.testDate, self.dateFormatter.dateFromString("2000-01-11T00:00:00Z")!)
+                            XCTAssertEqual(object?.testData, ("nil:TestEntity1:11" as NSString).data(using: String.Encoding.utf8.rawValue)!)
+                            XCTAssertEqual(object?.testDate, self.dateFormatter.date(from: "2000-01-11T00:00:00Z")!)
                             
-                        case NSNumber(integer: 102)?:
+                        case NSNumber(value: 102)?:
                             XCTAssertEqual(indexPath?.section, 0)
                             XCTAssertEqual(indexPath?.row, 0)
                             
-                            XCTAssertEqual(object?.testBoolean, NSNumber(bool: false))
-                            XCTAssertEqual(object?.testNumber, NSNumber(integer: 22))
+                            XCTAssertEqual(object?.testBoolean, NSNumber(value: false))
+                            XCTAssertEqual(object?.testNumber, NSNumber(value: 22))
                             XCTAssertEqual(object?.testDecimal, NSDecimalNumber(string: "22"))
                             XCTAssertEqual(object?.testString, "nil:TestEntity1:22")
-                            XCTAssertEqual(object?.testData, ("nil:TestEntity1:22" as NSString).dataUsingEncoding(NSUTF8StringEncoding)!)
-                            XCTAssertEqual(object?.testDate, self.dateFormatter.dateFromString("2000-01-22T00:00:00Z")!)
+                            XCTAssertEqual(object?.testData, ("nil:TestEntity1:22" as NSString).data(using: String.Encoding.utf8.rawValue)!)
+                            XCTAssertEqual(object?.testDate, self.dateFormatter.date(from: "2000-01-22T00:00:00Z")!)
                             
                         default:
                             XCTFail()
@@ -253,13 +268,13 @@ class ListObserverTests: BaseTestDataTestCase {
                     }
                 )
             }
-            let didChangeExpectation = self.expectationForNotification(
-                "listMonitorDidChange:",
+            let didChangeExpectation = self.expectation(
+                forNotification: "listMonitorDidChange:",
                 object: observer,
                 handler: { (note) -> Bool in
                     
                     XCTAssertEqual(events, 3)
-                    XCTAssertEqual((note.userInfo ?? [:]), NSDictionary())
+                    XCTAssertEqual((note.userInfo as NSDictionary?) ?? [:], NSDictionary())
                     defer {
                         
                         events += 1
@@ -267,32 +282,32 @@ class ListObserverTests: BaseTestDataTestCase {
                     return events == 3
                 }
             )
-            let saveExpectation = self.expectationWithDescription("save")
+            let saveExpectation = self.expectation(description: "save")
             stack.beginAsynchronous { (transaction) in
                 
                 if let object = transaction.fetchOne(
-                    From(TestEntity1),
-                    Where("testEntityID", isEqualTo: 101)) {
+                    From<TestEntity1>(),
+                    Where(#keyPath(TestEntity1.testEntityID), isEqualTo: 101)) {
                     
-                    object.testNumber = NSNumber(integer: 11)
+                    object.testNumber = NSNumber(value: 11)
                     object.testDecimal = NSDecimalNumber(string: "11")
                     object.testString = "nil:TestEntity1:11"
-                    object.testData = ("nil:TestEntity1:11" as NSString).dataUsingEncoding(NSUTF8StringEncoding)!
-                    object.testDate = self.dateFormatter.dateFromString("2000-01-11T00:00:00Z")!
+                    object.testData = ("nil:TestEntity1:11" as NSString).data(using: String.Encoding.utf8.rawValue)!
+                    object.testDate = self.dateFormatter.date(from: "2000-01-11T00:00:00Z")!
                 }
                 else {
                     
                     XCTFail()
                 }
                 if let object = transaction.fetchOne(
-                    From(TestEntity1),
-                    Where("testEntityID", isEqualTo: 102)) {
+                    From<TestEntity1>(),
+                    Where(#keyPath(TestEntity1.testEntityID), isEqualTo: 102)) {
                     
-                    object.testNumber = NSNumber(integer: 22)
+                    object.testNumber = NSNumber(value: 22)
                     object.testDecimal = NSDecimalNumber(string: "22")
                     object.testString = "nil:TestEntity1:22"
-                    object.testData = ("nil:TestEntity1:22" as NSString).dataUsingEncoding(NSUTF8StringEncoding)!
-                    object.testDate = self.dateFormatter.dateFromString("2000-01-22T00:00:00Z")!
+                    object.testData = ("nil:TestEntity1:22" as NSString).data(using: String.Encoding.utf8.rawValue)!
+                    object.testDate = self.dateFormatter.date(from: "2000-01-22T00:00:00Z")!
                 }
                 else {
                     
@@ -302,11 +317,11 @@ class ListObserverTests: BaseTestDataTestCase {
                     
                     switch result {
                         
-                    case .Success(let hasChanges):
+                    case .success(let hasChanges):
                         XCTAssertTrue(hasChanges)
                         saveExpectation.fulfill()
                         
-                    case .Failure:
+                    case .failure:
                         XCTFail()
                     }
                 }
@@ -324,21 +339,21 @@ class ListObserverTests: BaseTestDataTestCase {
             
             let observer = TestListObserver()
             let monitor = stack.monitorSectionedList(
-                From(TestEntity1),
-                SectionBy("testBoolean"),
-                OrderBy(.Ascending("testBoolean"), .Ascending("testEntityID"))
+                From<TestEntity1>(),
+                SectionBy(#keyPath(TestEntity1.testBoolean)),
+                OrderBy(.ascending(#keyPath(TestEntity1.testBoolean)), .ascending(#keyPath(TestEntity1.testEntityID)))
             )
             monitor.addObserver(observer)
             
             var events = 0
             
-            let willChangeExpectation = self.expectationForNotification(
-                "listMonitorWillChange:",
+            let willChangeExpectation = self.expectation(
+                forNotification: "listMonitorWillChange:",
                 object: observer,
                 handler: { (note) -> Bool in
                     
                     XCTAssertEqual(events, 0)
-                    XCTAssertEqual((note.userInfo ?? [:]), NSDictionary())
+                    XCTAssertEqual((note.userInfo as NSDictionary?) ?? [:], NSDictionary())
                     defer {
                         
                         events += 1
@@ -346,8 +361,8 @@ class ListObserverTests: BaseTestDataTestCase {
                     return events == 0
                 }
             )
-            let didMoveObjectExpectation = self.expectationForNotification(
-                "listMonitor:didMoveObject:fromIndexPath:toIndexPath:",
+            let didMoveObjectExpectation = self.expectation(
+                forNotification: "listMonitor:didMoveObject:fromIndexPath:toIndexPath:",
                 object: observer,
                 handler: { (note) -> Bool in
                     
@@ -356,7 +371,7 @@ class ListObserverTests: BaseTestDataTestCase {
                     let userInfo = note.userInfo
                     XCTAssertNotNil(userInfo)
                     XCTAssertEqual(
-                        Set(((userInfo as? [String: AnyObject]) ?? [:]).keys),
+                        Set(userInfo?.keys.map({ $0 as! String }) ?? []),
                         ["fromIndexPath", "toIndexPath", "object"]
                     )
                     
@@ -369,8 +384,8 @@ class ListObserverTests: BaseTestDataTestCase {
                     XCTAssertEqual(toIndexPath?.row, 1)
                     
                     let object = userInfo?["object"] as? TestEntity1
-                    XCTAssertEqual(object?.testEntityID, NSNumber(integer: 102))
-                    XCTAssertEqual(object?.testBoolean, NSNumber(bool: true))
+                    XCTAssertEqual(object?.testEntityID, NSNumber(value: 102))
+                    XCTAssertEqual(object?.testBoolean, NSNumber(value: true))
                     
                     defer {
                         
@@ -379,13 +394,13 @@ class ListObserverTests: BaseTestDataTestCase {
                     return events == 1
                 }
             )
-            let didChangeExpectation = self.expectationForNotification(
-                "listMonitorDidChange:",
+            let didChangeExpectation = self.expectation(
+                forNotification: "listMonitorDidChange:",
                 object: observer,
                 handler: { (note) -> Bool in
                     
                     XCTAssertEqual(events, 2)
-                    XCTAssertEqual((note.userInfo ?? [:]), NSDictionary())
+                    XCTAssertEqual((note.userInfo as NSDictionary?) ?? [:], NSDictionary())
                     defer {
                         
                         events += 1
@@ -393,14 +408,14 @@ class ListObserverTests: BaseTestDataTestCase {
                     return events == 2
                 }
             )
-            let saveExpectation = self.expectationWithDescription("save")
+            let saveExpectation = self.expectation(description: "save")
             stack.beginAsynchronous { (transaction) in
                 
                 if let object = transaction.fetchOne(
-                    From(TestEntity1),
-                    Where("testEntityID", isEqualTo: 102)) {
+                    From<TestEntity1>(),
+                    Where(#keyPath(TestEntity1.testEntityID), isEqualTo: 102)) {
                     
-                    object.testBoolean = NSNumber(bool: true)
+                    object.testBoolean = NSNumber(value: true)
                 }
                 else {
                     
@@ -410,11 +425,11 @@ class ListObserverTests: BaseTestDataTestCase {
                     
                     switch result {
                         
-                    case .Success(let hasChanges):
+                    case .success(let hasChanges):
                         XCTAssertTrue(hasChanges)
                         saveExpectation.fulfill()
                         
-                    case .Failure:
+                    case .failure:
                         XCTFail()
                     }
                 }
@@ -432,21 +447,21 @@ class ListObserverTests: BaseTestDataTestCase {
             
             let observer = TestListObserver()
             let monitor = stack.monitorSectionedList(
-                From(TestEntity1),
-                SectionBy("testBoolean"),
-                OrderBy(.Ascending("testBoolean"), .Ascending("testEntityID"))
+                From<TestEntity1>(),
+                SectionBy(#keyPath(TestEntity1.testBoolean)),
+                OrderBy(.ascending(#keyPath(TestEntity1.testBoolean)), .ascending(#keyPath(TestEntity1.testEntityID)))
             )
             monitor.addObserver(observer)
             
             var events = 0
             
-            let willChangeExpectation = self.expectationForNotification(
-                "listMonitorWillChange:",
+            let willChangeExpectation = self.expectation(
+                forNotification: "listMonitorWillChange:",
                 object: observer,
                 handler: { (note) -> Bool in
                     
                     XCTAssertEqual(events, 0)
-                    XCTAssertEqual((note.userInfo ?? [:]), NSDictionary())
+                    XCTAssertEqual((note.userInfo as NSDictionary?) ?? [:], NSDictionary())
                     defer {
                         
                         events += 1
@@ -456,8 +471,8 @@ class ListObserverTests: BaseTestDataTestCase {
             )
             for _ in 1 ... 2 {
                 
-                let didUpdateObjectExpectation = self.expectationForNotification(
-                    "listMonitor:didDeleteObject:fromIndexPath:",
+                let didUpdateObjectExpectation = self.expectation(
+                    forNotification: "listMonitor:didDeleteObject:fromIndexPath:",
                     object: observer,
                     handler: { (note) -> Bool in
                         
@@ -466,7 +481,7 @@ class ListObserverTests: BaseTestDataTestCase {
                         let userInfo = note.userInfo
                         XCTAssertNotNil(userInfo)
                         XCTAssertEqual(
-                            Set(((userInfo as? [String: AnyObject]) ?? [:]).keys),
+                            Set(userInfo?.keys.map({ $0 as! String }) ?? []),
                             ["indexPath", "object"]
                         )
                         
@@ -476,7 +491,7 @@ class ListObserverTests: BaseTestDataTestCase {
                         XCTAssert(indexPath?.row == 0 || indexPath?.row == 1)
                         
                         let object = userInfo?["object"] as? TestEntity1
-                        XCTAssertEqual(object?.deleted, true)
+                        XCTAssertEqual(object?.isDeleted, true)
                         
                         defer {
                             
@@ -486,8 +501,8 @@ class ListObserverTests: BaseTestDataTestCase {
                     }
                 )
             }
-            let didDeleteSectionExpectation = self.expectationForNotification(
-                "listMonitor:didDeleteSection:fromSectionIndex:",
+            let didDeleteSectionExpectation = self.expectation(
+                forNotification: "listMonitor:didDeleteSection:fromSectionIndex:",
                 object: observer,
                 handler: { (note) -> Bool in
                     
@@ -496,16 +511,16 @@ class ListObserverTests: BaseTestDataTestCase {
                     let userInfo = note.userInfo
                     XCTAssertNotNil(userInfo)
                     XCTAssertEqual(
-                        Set(((userInfo as? [String: AnyObject]) ?? [:]).keys),
+                        Set(userInfo?.keys.map({ $0 as! String }) ?? []),
                         ["sectionInfo", "sectionIndex"]
                     )
                     
-                    let sectionInfo = userInfo?["sectionInfo"]
+                    let sectionInfo = userInfo?["sectionInfo"] as? NSFetchedResultsSectionInfo
                     XCTAssertNotNil(sectionInfo)
                     XCTAssertEqual(sectionInfo?.name, "0")
                     
                     let sectionIndex = userInfo?["sectionIndex"]
-                    XCTAssertEqual(sectionIndex as? NSNumber, NSNumber(integer: 0))
+                    XCTAssertEqual(sectionIndex as? NSNumber, NSNumber(value: 0))
                     
                     defer {
                         
@@ -514,13 +529,13 @@ class ListObserverTests: BaseTestDataTestCase {
                     return events == 3
                 }
             )
-            let didChangeExpectation = self.expectationForNotification(
-                "listMonitorDidChange:",
+            let didChangeExpectation = self.expectation(
+                forNotification: "listMonitorDidChange:",
                 object: observer,
                 handler: { (note) -> Bool in
                     
                     XCTAssertEqual(events, 4)
-                    XCTAssertEqual((note.userInfo ?? [:]), NSDictionary())
+                    XCTAssertEqual((note.userInfo as NSDictionary?) ?? [:], NSDictionary())
                     defer {
                         
                         events += 1
@@ -528,22 +543,22 @@ class ListObserverTests: BaseTestDataTestCase {
                     return events == 4
                 }
             )
-            let saveExpectation = self.expectationWithDescription("save")
+            let saveExpectation = self.expectation(description: "save")
             stack.beginAsynchronous { (transaction) in
                 
                 transaction.deleteAll(
-                    From(TestEntity1),
-                    Where("testBoolean", isEqualTo: false)
+                    From<TestEntity1>(),
+                    Where(#keyPath(TestEntity1.testBoolean), isEqualTo: false)
                 )
                 transaction.commit { (result) in
                     
                     switch result {
                         
-                    case .Success(let hasChanges):
+                    case .success(let hasChanges):
                         XCTAssertTrue(hasChanges)
                         saveExpectation.fulfill()
                         
-                    case .Failure:
+                    case .failure:
                         XCTFail()
                     }
                 }
@@ -562,37 +577,37 @@ class TestListObserver: ListSectionObserver {
     
     typealias ListEntityType = TestEntity1
     
-    func listMonitorWillChange(monitor: ListMonitor<TestEntity1>) {
+    func listMonitorWillChange(_ monitor: ListMonitor<TestEntity1>) {
         
-        NSNotificationCenter.defaultCenter().postNotificationName(
-            "listMonitorWillChange:",
+        NotificationCenter.default.post(
+            name: Notification.Name(rawValue: "listMonitorWillChange:"),
             object: self,
             userInfo: [:]
         )
     }
     
-    func listMonitorDidChange(monitor: ListMonitor<TestEntity1>) {
+    func listMonitorDidChange(_ monitor: ListMonitor<TestEntity1>) {
         
-        NSNotificationCenter.defaultCenter().postNotificationName(
-            "listMonitorDidChange:",
+        NotificationCenter.default.post(
+            name: Notification.Name(rawValue: "listMonitorDidChange:"),
             object: self,
             userInfo: [:]
         )
     }
     
-    func listMonitorWillRefetch(monitor: ListMonitor<TestEntity1>) {
+    func listMonitorWillRefetch(_ monitor: ListMonitor<TestEntity1>) {
         
-        NSNotificationCenter.defaultCenter().postNotificationName(
-            "listMonitorWillRefetch:",
+        NotificationCenter.default.post(
+            name: Notification.Name(rawValue: "listMonitorWillRefetch:"),
             object: self,
             userInfo: [:]
         )
     }
     
-    func listMonitorDidRefetch(monitor: ListMonitor<TestEntity1>) {
+    func listMonitorDidRefetch(_ monitor: ListMonitor<TestEntity1>) {
         
-        NSNotificationCenter.defaultCenter().postNotificationName(
-            "listMonitorDidRefetch:",
+        NotificationCenter.default.post(
+            name: Notification.Name(rawValue: "listMonitorDidRefetch:"),
             object: self,
             userInfo: [:]
         )
@@ -601,10 +616,10 @@ class TestListObserver: ListSectionObserver {
     
     // MARK: ListObjectObserver
     
-    func listMonitor(monitor: ListMonitor<TestEntity1>, didInsertObject object: TestEntity1, toIndexPath indexPath: NSIndexPath) {
+    func listMonitor(_ monitor: ListMonitor<TestEntity1>, didInsertObject object: TestEntity1, toIndexPath indexPath: IndexPath) {
         
-        NSNotificationCenter.defaultCenter().postNotificationName(
-            "listMonitor:didInsertObject:toIndexPath:",
+        NotificationCenter.default.post(
+            name: Notification.Name(rawValue: "listMonitor:didInsertObject:toIndexPath:"),
             object: self,
             userInfo: [
                 "object": object,
@@ -613,10 +628,10 @@ class TestListObserver: ListSectionObserver {
         )
     }
     
-    func listMonitor(monitor: ListMonitor<TestEntity1>, didDeleteObject object: TestEntity1, fromIndexPath indexPath: NSIndexPath) {
+    func listMonitor(_ monitor: ListMonitor<TestEntity1>, didDeleteObject object: TestEntity1, fromIndexPath indexPath: IndexPath) {
         
-        NSNotificationCenter.defaultCenter().postNotificationName(
-            "listMonitor:didDeleteObject:fromIndexPath:",
+        NotificationCenter.default.post(
+            name: Notification.Name(rawValue: "listMonitor:didDeleteObject:fromIndexPath:"),
             object: self,
             userInfo: [
                 "object": object,
@@ -625,10 +640,10 @@ class TestListObserver: ListSectionObserver {
         )
     }
     
-    func listMonitor(monitor: ListMonitor<TestEntity1>, didUpdateObject object: TestEntity1, atIndexPath indexPath: NSIndexPath) {
+    func listMonitor(_ monitor: ListMonitor<TestEntity1>, didUpdateObject object: TestEntity1, atIndexPath indexPath: IndexPath) {
         
-        NSNotificationCenter.defaultCenter().postNotificationName(
-            "listMonitor:didUpdateObject:atIndexPath:",
+        NotificationCenter.default.post(
+            name: Notification.Name(rawValue: "listMonitor:didUpdateObject:atIndexPath:"),
             object: self,
             userInfo: [
                 "object": object,
@@ -638,10 +653,10 @@ class TestListObserver: ListSectionObserver {
     }
     
     
-    func listMonitor(monitor: ListMonitor<TestEntity1>, didMoveObject object: TestEntity1, fromIndexPath: NSIndexPath, toIndexPath: NSIndexPath) {
+    func listMonitor(_ monitor: ListMonitor<TestEntity1>, didMoveObject object: TestEntity1, fromIndexPath: IndexPath, toIndexPath: IndexPath) {
         
-        NSNotificationCenter.defaultCenter().postNotificationName(
-            "listMonitor:didMoveObject:fromIndexPath:toIndexPath:",
+        NotificationCenter.default.post(
+            name: Notification.Name(rawValue: "listMonitor:didMoveObject:fromIndexPath:toIndexPath:"),
             object: self,
             userInfo: [
                 "object": object,
@@ -654,10 +669,10 @@ class TestListObserver: ListSectionObserver {
     
     // MARK: ListSectionObserver
     
-    func listMonitor(monitor: ListMonitor<TestEntity1>, didInsertSection sectionInfo: NSFetchedResultsSectionInfo, toSectionIndex sectionIndex: Int) {
+    func listMonitor(_ monitor: ListMonitor<TestEntity1>, didInsertSection sectionInfo: NSFetchedResultsSectionInfo, toSectionIndex sectionIndex: Int) {
         
-        NSNotificationCenter.defaultCenter().postNotificationName(
-            "listMonitor:didInsertSection:toSectionIndex:",
+        NotificationCenter.default.post(
+            name: Notification.Name(rawValue: "listMonitor:didInsertSection:toSectionIndex:"),
             object: self,
             userInfo: [
                 "sectionInfo": sectionInfo,
@@ -666,10 +681,10 @@ class TestListObserver: ListSectionObserver {
         )
     }
     
-    func listMonitor(monitor: ListMonitor<TestEntity1>, didDeleteSection sectionInfo: NSFetchedResultsSectionInfo, fromSectionIndex sectionIndex: Int) {
+    func listMonitor(_ monitor: ListMonitor<TestEntity1>, didDeleteSection sectionInfo: NSFetchedResultsSectionInfo, fromSectionIndex sectionIndex: Int) {
         
-        NSNotificationCenter.defaultCenter().postNotificationName(
-            "listMonitor:didDeleteSection:fromSectionIndex:",
+        NotificationCenter.default.post(
+            name: Notification.Name(rawValue: "listMonitor:didDeleteSection:fromSectionIndex:"),
             object: self,
             userInfo: [
                 "sectionInfo": sectionInfo,

CoreStoreTests/Model.xcdatamodeld/Model.xcdatamodel/contents

@@ -1,23 +1,23 @@
 <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
-<model userDefinedModelVersionIdentifier="" type="com.apple.IDECoreDataModeler.DataModel" documentVersion="1.0" lastSavedToolsVersion="10174" systemVersion="15F34" minimumToolsVersion="Xcode 4.3">
+<model type="com.apple.IDECoreDataModeler.DataModel" documentVersion="1.0" lastSavedToolsVersion="11759" systemVersion="16C67" minimumToolsVersion="Xcode 4.3" sourceLanguage="Objective-C" userDefinedModelVersionIdentifier="">
     <entity name="TestEntity1AAA" representedClassName="CoreStoreTests.TestEntity1" syncable="YES">
-        <attribute name="testBoolean" optional="YES" attributeType="Boolean" syncable="YES"/>
+        <attribute name="testBoolean" optional="YES" attributeType="Boolean" usesScalarValueType="NO" syncable="YES"/>
         <attribute name="testData" optional="YES" attributeType="Binary" syncable="YES"/>
-        <attribute name="testDate" optional="YES" attributeType="Date" syncable="YES"/>
+        <attribute name="testDate" optional="YES" attributeType="Date" usesScalarValueType="NO" syncable="YES"/>
         <attribute name="testDecimal" optional="YES" attributeType="Decimal" syncable="YES"/>
-        <attribute name="testEntityID" optional="YES" attributeType="Integer 64" syncable="YES"/>
+        <attribute name="testEntityID" optional="YES" attributeType="Integer 64" usesScalarValueType="NO" syncable="YES"/>
         <attribute name="testNil" optional="YES" attributeType="String" syncable="YES"/>
-        <attribute name="testNumber" optional="YES" attributeType="Integer 32" syncable="YES"/>
+        <attribute name="testNumber" optional="YES" attributeType="Integer 32" usesScalarValueType="NO" syncable="YES"/>
         <attribute name="testString" optional="YES" attributeType="String" syncable="YES"/>
     </entity>
     <entity name="TestEntity2" representedClassName="CoreStoreTests.TestEntity2" syncable="YES">
-        <attribute name="testBoolean" optional="YES" attributeType="Boolean" syncable="YES"/>
+        <attribute name="testBoolean" optional="YES" attributeType="Boolean" usesScalarValueType="NO" syncable="YES"/>
         <attribute name="testData" optional="YES" attributeType="Binary" syncable="YES"/>
-        <attribute name="testDate" optional="YES" attributeType="Date" syncable="YES"/>
+        <attribute name="testDate" optional="YES" attributeType="Date" usesScalarValueType="NO" syncable="YES"/>
         <attribute name="testDecimal" optional="YES" attributeType="Decimal" syncable="YES"/>
-        <attribute name="testEntityID" optional="YES" attributeType="Integer 64" syncable="YES"/>
+        <attribute name="testEntityID" optional="YES" attributeType="Integer 64" usesScalarValueType="NO" syncable="YES"/>
         <attribute name="testNil" optional="YES" attributeType="String" syncable="YES"/>
-        <attribute name="testNumber" optional="YES" attributeType="Integer 32" syncable="YES"/>
+        <attribute name="testNumber" optional="YES" attributeType="Integer 32" usesScalarValueType="NO" syncable="YES"/>
         <attribute name="testString" optional="YES" attributeType="String" syncable="YES"/>
     </entity>
     <configuration name="Config1">

CoreStoreTests/ObjectObserverTests.swift

@@ -33,7 +33,27 @@ import CoreStore
 
 // MARK: - ObjectObserverTests
 
-class ObjectObserverTests: BaseTestDataTestCase {
+    class ObjectObserverTests: BaseTestDataTestCase {
+        
+        @objc
+        dynamic func test_ThatObjectObservers_CanDowncast() {
+            
+            self.prepareStack { (stack) in
+                
+                self.prepareTestDataForStack(stack)
+                
+                guard let object = stack.fetchOne(
+                    From<TestEntity1>(),
+                    Where(#keyPath(TestEntity1.testEntityID), isEqualTo: 101)) else {
+                        
+                        XCTFail()
+                        return
+                }
+                let monitor = stack.monitorObject(object)
+                let downcast = monitor.downcast()
+                XCTAssertTrue(monitor == downcast)
+            }
+        }
     
     @objc
     dynamic func test_ThatObjectObservers_CanReceiveUpdateNotifications() {
@@ -43,8 +63,8 @@ class ObjectObserverTests: BaseTestDataTestCase {
             self.prepareTestDataForStack(stack)
             
             guard let object = stack.fetchOne(
-                From(TestEntity1),
-                Where("testEntityID", isEqualTo: 101)) else {
+                From<TestEntity1>(),
+                Where(#keyPath(TestEntity1.testEntityID), isEqualTo: 101)) else {
                     
                     XCTFail()
                     return
@@ -58,14 +78,14 @@ class ObjectObserverTests: BaseTestDataTestCase {
             
             var events = 0
             
-            let willUpdateExpectation = self.expectationForNotification(
-                "objectMonitor:willUpdateObject:",
+            let willUpdateExpectation = self.expectation(
+                forNotification: "objectMonitor:willUpdateObject:",
                 object: observer,
                 handler: { (note) -> Bool in
                     
                     XCTAssertEqual(events, 0)
                     XCTAssertEqual(
-                        (note.userInfo ?? [:]),
+                        ((note.userInfo as NSDictionary?) ?? [:]),
                         ["object": object] as NSDictionary
                     )
                     defer {
@@ -75,26 +95,26 @@ class ObjectObserverTests: BaseTestDataTestCase {
                     return events == 0
                 }
             )
-            let didUpdateExpectation = self.expectationForNotification(
-                "objectMonitor:didUpdateObject:changedPersistentKeys:",
+            let didUpdateExpectation = self.expectation(
+                forNotification: "objectMonitor:didUpdateObject:changedPersistentKeys:",
                 object: observer,
                 handler: { (note) -> Bool in
                     
                     XCTAssertEqual(events, 1)
                     XCTAssertEqual(
-                        (note.userInfo ?? [:]),
+                        ((note.userInfo as NSDictionary?) ?? [:]),
                         [
                             "object": object,
                             "changedPersistentKeys": Set(
                                 [
-                                    "testNumber",
-                                    "testString"
+                                    #keyPath(TestEntity1.testNumber),
+                                    #keyPath(TestEntity1.testString)
                                 ]
                             )
                         ] as NSDictionary
                     )
                     let object = note.userInfo?["object"] as? TestEntity1
-                    XCTAssertEqual(object?.testNumber, NSNumber(integer: 10))
+                    XCTAssertEqual(object?.testNumber, NSNumber(value: 10))
                     XCTAssertEqual(object?.testString, "nil:TestEntity1:10")
                     
                     defer {
@@ -104,7 +124,7 @@ class ObjectObserverTests: BaseTestDataTestCase {
                     return events == 1
                 }
             )
-            let saveExpectation = self.expectationWithDescription("save")
+            let saveExpectation = self.expectation(description: "save")
             stack.beginAsynchronous { (transaction) in
                 
                 guard let object = transaction.edit(object) else {
@@ -112,18 +132,18 @@ class ObjectObserverTests: BaseTestDataTestCase {
                     XCTFail()
                     return
                 }
-                object.testNumber = NSNumber(integer: 10)
+                object.testNumber = NSNumber(value: 10)
                 object.testString = "nil:TestEntity1:10"
                 
                 transaction.commit { (result) in
                     
                     switch result {
                         
-                    case .Success(let hasChanges):
+                    case .success(let hasChanges):
                         XCTAssertTrue(hasChanges)
                         saveExpectation.fulfill()
                         
-                    case .Failure:
+                    case .failure:
                         XCTFail()
                     }
                 }
@@ -140,8 +160,8 @@ class ObjectObserverTests: BaseTestDataTestCase {
             self.prepareTestDataForStack(stack)
             
             guard let object = stack.fetchOne(
-                From(TestEntity1),
-                Where("testEntityID", isEqualTo: 101)) else {
+                From<TestEntity1>(),
+                Where(#keyPath(TestEntity1.testEntityID), isEqualTo: 101)) else {
                     
                     XCTFail()
                     return
@@ -155,14 +175,14 @@ class ObjectObserverTests: BaseTestDataTestCase {
             
             var events = 0
             
-            let didDeleteExpectation = self.expectationForNotification(
-                "objectMonitor:didDeleteObject:",
+            let didDeleteExpectation = self.expectation(
+                forNotification: "objectMonitor:didDeleteObject:",
                 object: observer,
                 handler: { (note) -> Bool in
                     
                     XCTAssertEqual(events, 0)
                     XCTAssertEqual(
-                        (note.userInfo ?? [:]),
+                        ((note.userInfo as NSDictionary?) ?? [:]),
                         ["object": object] as NSDictionary
                     )
                     defer {
@@ -172,7 +192,7 @@ class ObjectObserverTests: BaseTestDataTestCase {
                     return events == 0
                 }
             )
-            let saveExpectation = self.expectationWithDescription("save")
+            let saveExpectation = self.expectation(description: "save")
             stack.beginAsynchronous { (transaction) in
                 
                 guard let object = transaction.edit(object) else {
@@ -186,12 +206,12 @@ class ObjectObserverTests: BaseTestDataTestCase {
                     
                     switch result {
                         
-                    case .Success(let hasChanges):
+                    case .success(let hasChanges):
                         XCTAssertTrue(hasChanges)
                         XCTAssertTrue(monitor.isObjectDeleted)
                         saveExpectation.fulfill()
                         
-                    case .Failure:
+                    case .failure:
                         XCTFail()
                     }
                 }
@@ -208,10 +228,10 @@ class TestObjectObserver: ObjectObserver {
     
     typealias ObjectEntityType = TestEntity1
     
-    func objectMonitor(monitor: ObjectMonitor<TestEntity1>, willUpdateObject object: TestEntity1) {
+    func objectMonitor(_ monitor: ObjectMonitor<TestEntity1>, willUpdateObject object: TestEntity1) {
         
-        NSNotificationCenter.defaultCenter().postNotificationName(
-            "objectMonitor:willUpdateObject:",
+        NotificationCenter.default.post(
+            name: Notification.Name(rawValue: "objectMonitor:willUpdateObject:"),
             object: self,
             userInfo: [
                 "object": object
@@ -219,10 +239,10 @@ class TestObjectObserver: ObjectObserver {
         )
     }
     
-    func objectMonitor(monitor: ObjectMonitor<TestEntity1>, didUpdateObject object: TestEntity1, changedPersistentKeys: Set<KeyPath>) {
+    func objectMonitor(_ monitor: ObjectMonitor<TestEntity1>, didUpdateObject object: TestEntity1, changedPersistentKeys: Set<KeyPath>) {
         
-        NSNotificationCenter.defaultCenter().postNotificationName(
-            "objectMonitor:didUpdateObject:changedPersistentKeys:",
+        NotificationCenter.default.post(
+            name: NSNotification.Name(rawValue: "objectMonitor:didUpdateObject:changedPersistentKeys:"),
             object: self,
             userInfo: [
                 "object": object,
@@ -231,10 +251,10 @@ class TestObjectObserver: ObjectObserver {
         )
     }
     
-    func objectMonitor(monitor: ObjectMonitor<TestEntity1>, didDeleteObject object: TestEntity1) {
+    func objectMonitor(_ monitor: ObjectMonitor<TestEntity1>, didDeleteObject object: TestEntity1) {
         
-        NSNotificationCenter.defaultCenter().postNotificationName(
-            "objectMonitor:didDeleteObject:",
+        NotificationCenter.default.post(
+            name: Notification.Name(rawValue: "objectMonitor:didDeleteObject:"),
             object: self,
             userInfo: [
                 "object": object

CoreStoreTests/OrderByTests.swift

@@ -39,7 +39,7 @@ final class OrderByTests: XCTestCase {
         do {
             
             let orderBy = OrderBy()
-            XCTAssertEqual(orderBy, OrderBy([] as [NSSortDescriptor]))
+            XCTAssertEqual(orderBy, OrderBy([NSSortDescriptor]()))
             XCTAssertNotEqual(orderBy, OrderBy(NSSortDescriptor(key: "key", ascending: false)))
             XCTAssertTrue(orderBy.sortDescriptors.isEmpty)
         }
@@ -48,9 +48,9 @@ final class OrderByTests: XCTestCase {
             let sortDescriptor = NSSortDescriptor(key: "key1", ascending: true)
             let orderBy = OrderBy(sortDescriptor)
             XCTAssertEqual(orderBy, OrderBy(sortDescriptor))
-            XCTAssertEqual(orderBy, OrderBy(.Ascending("key1")))
-            XCTAssertNotEqual(orderBy, OrderBy(.Ascending("key2")))
-            XCTAssertNotEqual(orderBy, OrderBy(.Descending("key1")))
+            XCTAssertEqual(orderBy, OrderBy(.ascending("key1")))
+            XCTAssertNotEqual(orderBy, OrderBy(.ascending("key2")))
+            XCTAssertNotEqual(orderBy, OrderBy(.descending("key1")))
             XCTAssertNotEqual(orderBy, OrderBy(NSSortDescriptor(key: "key1", ascending: false)))
             XCTAssertEqual(orderBy, OrderBy([sortDescriptor]))
             XCTAssertEqual(orderBy.sortDescriptors, [sortDescriptor])
@@ -63,7 +63,7 @@ final class OrderByTests: XCTestCase {
             ]
             let orderBy = OrderBy(sortDescriptors)
             XCTAssertEqual(orderBy, OrderBy(sortDescriptors))
-            XCTAssertEqual(orderBy, OrderBy(.Ascending("key1"), .Descending("key2")))
+            XCTAssertEqual(orderBy, OrderBy(.ascending("key1"), .descending("key2")))
             XCTAssertNotEqual(
                 orderBy,
                 OrderBy(
@@ -73,30 +73,30 @@ final class OrderByTests: XCTestCase {
                     ]
                 )
             )
-            XCTAssertNotEqual(orderBy, OrderBy(.Ascending("key1"), .Ascending("key2")))
-            XCTAssertNotEqual(orderBy, OrderBy(.Ascending("key1"), .Descending("key3")))
+            XCTAssertNotEqual(orderBy, OrderBy(.ascending("key1"), .ascending("key2")))
+            XCTAssertNotEqual(orderBy, OrderBy(.ascending("key1"), .descending("key3")))
             XCTAssertEqual(orderBy.sortDescriptors, sortDescriptors)
         }
         do {
             
-            let orderBy = OrderBy(.Ascending("key1"))
+            let orderBy = OrderBy(.ascending("key1"))
             let sortDescriptor = NSSortDescriptor(key: "key1", ascending: true)
             XCTAssertEqual(orderBy, OrderBy(sortDescriptor))
-            XCTAssertEqual(orderBy, OrderBy(.Ascending("key1")))
-            XCTAssertNotEqual(orderBy, OrderBy(.Descending("key1")))
-            XCTAssertNotEqual(orderBy, OrderBy(.Ascending("key2")))
+            XCTAssertEqual(orderBy, OrderBy(.ascending("key1")))
+            XCTAssertNotEqual(orderBy, OrderBy(.descending("key1")))
+            XCTAssertNotEqual(orderBy, OrderBy(.ascending("key2")))
             XCTAssertEqual(orderBy, OrderBy([sortDescriptor]))
             XCTAssertEqual(orderBy.sortDescriptors, [sortDescriptor])
         }
         do {
             
-            let orderBy = OrderBy(.Ascending("key1"), .Descending("key2"))
+            let orderBy = OrderBy(.ascending("key1"), .descending("key2"))
             let sortDescriptors = [
                 NSSortDescriptor(key: "key1", ascending: true),
                 NSSortDescriptor(key: "key2", ascending: false)
             ]
             XCTAssertEqual(orderBy, OrderBy(sortDescriptors))
-            XCTAssertEqual(orderBy, OrderBy(.Ascending("key1"), .Descending("key2")))
+            XCTAssertEqual(orderBy, OrderBy(.ascending("key1"), .descending("key2")))
             XCTAssertNotEqual(
                 orderBy,
                 OrderBy(
@@ -106,20 +106,20 @@ final class OrderByTests: XCTestCase {
                     ]
                 )
             )
-            XCTAssertNotEqual(orderBy, OrderBy(.Ascending("key1"), .Ascending("key2")))
-            XCTAssertNotEqual(orderBy, OrderBy(.Ascending("key1"), .Descending("key3")))
+            XCTAssertNotEqual(orderBy, OrderBy(.ascending("key1"), .ascending("key2")))
+            XCTAssertNotEqual(orderBy, OrderBy(.ascending("key1"), .descending("key3")))
             XCTAssertEqual(orderBy.sortDescriptors, sortDescriptors)
         }
         do {
             
-            let sortKeys: [SortKey] = [.Ascending("key1"), .Descending("key2")]
+            let sortKeys: [SortKey] = [.ascending("key1"), .descending("key2")]
             let orderBy = OrderBy(sortKeys)
             let sortDescriptors = [
                 NSSortDescriptor(key: "key1", ascending: true),
                 NSSortDescriptor(key: "key2", ascending: false)
             ]
             XCTAssertEqual(orderBy, OrderBy(sortDescriptors))
-            XCTAssertEqual(orderBy, OrderBy(.Ascending("key1"), .Descending("key2")))
+            XCTAssertEqual(orderBy, OrderBy(.ascending("key1"), .descending("key2")))
             XCTAssertNotEqual(
                 orderBy,
                 OrderBy(
@@ -129,8 +129,8 @@ final class OrderByTests: XCTestCase {
                     ]
                 )
             )
-            XCTAssertNotEqual(orderBy, OrderBy(.Ascending("key1"), .Ascending("key2")))
-            XCTAssertNotEqual(orderBy, OrderBy(.Ascending("key1"), .Descending("key3")))
+            XCTAssertNotEqual(orderBy, OrderBy(.ascending("key1"), .ascending("key2")))
+            XCTAssertNotEqual(orderBy, OrderBy(.ascending("key1"), .descending("key3")))
             XCTAssertEqual(orderBy.sortDescriptors, sortDescriptors)
         }
     }
@@ -138,15 +138,15 @@ final class OrderByTests: XCTestCase {
     @objc
     dynamic func test_ThatOrderByClauseOperations_ComputeCorrectly() {
         
-        let orderBy1 = OrderBy(.Ascending("key1"))
-        let orderBy2 = OrderBy(.Descending("key2"))
-        let orderBy3 = OrderBy(.Ascending("key3"))
+        let orderBy1 = OrderBy(.ascending("key1"))
+        let orderBy2 = OrderBy(.descending("key2"))
+        let orderBy3 = OrderBy(.ascending("key3"))
         
         do {
             
             let plusOrderBy = orderBy1 + orderBy2 + orderBy3
-            XCTAssertEqual(plusOrderBy, OrderBy(.Ascending("key1"), .Descending("key2"), .Ascending("key3")))
-            XCTAssertEqual(plusOrderBy, OrderBy(.Ascending("key1")) + OrderBy(.Descending("key2"), .Ascending("key3")))
+            XCTAssertEqual(plusOrderBy, OrderBy(.ascending("key1"), .descending("key2"), .ascending("key3")))
+            XCTAssertEqual(plusOrderBy, OrderBy(.ascending("key1")) + OrderBy(.descending("key2"), .ascending("key3")))
             XCTAssertNotEqual(plusOrderBy, orderBy1 + orderBy3 + orderBy2)
             XCTAssertNotEqual(plusOrderBy, orderBy2 + orderBy1 + orderBy3)
             XCTAssertNotEqual(plusOrderBy, orderBy2 + orderBy3 + orderBy1)
@@ -158,14 +158,14 @@ final class OrderByTests: XCTestCase {
             
             var plusOrderBy = orderBy1
             plusOrderBy += orderBy2
-            XCTAssertEqual(plusOrderBy, OrderBy(.Ascending("key1"), .Descending("key2")))
-            XCTAssertEqual(plusOrderBy, OrderBy(.Ascending("key1")) + OrderBy(.Descending("key2")))
+            XCTAssertEqual(plusOrderBy, OrderBy(.ascending("key1"), .descending("key2")))
+            XCTAssertEqual(plusOrderBy, OrderBy(.ascending("key1")) + OrderBy(.descending("key2")))
             XCTAssertNotEqual(plusOrderBy, orderBy2 + orderBy1)
             XCTAssertEqual(plusOrderBy.sortDescriptors, orderBy1.sortDescriptors + orderBy2.sortDescriptors)
             
             plusOrderBy += orderBy3
-            XCTAssertEqual(plusOrderBy, OrderBy(.Ascending("key1"), .Descending("key2"), .Ascending("key3")))
-            XCTAssertEqual(plusOrderBy, OrderBy(.Ascending("key1"), .Descending("key2")) + OrderBy(.Ascending("key3")))
+            XCTAssertEqual(plusOrderBy, OrderBy(.ascending("key1"), .descending("key2"), .ascending("key3")))
+            XCTAssertEqual(plusOrderBy, OrderBy(.ascending("key1"), .descending("key2")) + OrderBy(.ascending("key3")))
             XCTAssertNotEqual(plusOrderBy, orderBy1 + orderBy3 + orderBy2)
             XCTAssertNotEqual(plusOrderBy, orderBy2 + orderBy1 + orderBy3)
             XCTAssertNotEqual(plusOrderBy, orderBy2 + orderBy3 + orderBy1)
@@ -178,8 +178,8 @@ final class OrderByTests: XCTestCase {
     @objc
     dynamic func test_ThatOrderByClauses_ApplyToFetchRequestsCorrectly() {
         
-        let orderBy = OrderBy(.Ascending("key"))
-        let request = NSFetchRequest()
+        let orderBy = OrderBy(.ascending("key"))
+        let request = CoreStoreFetchRequest()
         orderBy.applyToFetchRequest(request)
         XCTAssertNotNil(request.sortDescriptors)
         XCTAssertEqual(request.sortDescriptors ?? [], orderBy.sortDescriptors)

CoreStoreTests/SectionByTests.swift

@@ -42,14 +42,14 @@ final class SectionByTests: XCTestCase {
             
             let sectionBy = SectionBy("key")
             XCTAssertEqual(sectionBy.sectionKeyPath, "key")
-            XCTAssertEqual(sectionBy.sectionIndexTransformer(sectionName: "key"), "key")
+            XCTAssertEqual(sectionBy.sectionIndexTransformer("key"), "key")
         }
         do {
             
             let sectionBy = SectionBy("key") { $0.flatMap { "\($0):suffix" } }
             XCTAssertEqual(sectionBy.sectionKeyPath, "key")
-            XCTAssertEqual(sectionBy.sectionIndexTransformer(sectionName: "key"), "key:suffix")
-            XCTAssertNil(sectionBy.sectionIndexTransformer(sectionName: nil))
+            XCTAssertEqual(sectionBy.sectionIndexTransformer("key"), "key:suffix")
+            XCTAssertNil(sectionBy.sectionIndexTransformer(nil))
         }
     }
 }

CoreStoreTests/SelectTests.swift

@@ -39,17 +39,17 @@ final class SelectTests: XCTestCase {
         do {
             
             let term: SelectTerm = "attribute"
-            XCTAssertEqual(term, SelectTerm.Attribute("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Attribute("attribute2"))
-            XCTAssertNotEqual(term, SelectTerm.Average("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Count("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Maximum("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Minimum("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Sum("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.ObjectID())
+            XCTAssertEqual(term, SelectTerm.attribute("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.attribute("attribute2"))
+            XCTAssertNotEqual(term, SelectTerm.average("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.count("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.maximum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.minimum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.sum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.objectID())
             switch term {
                 
-            case ._Attribute(let key):
+            case ._attribute(let key):
                 XCTAssertEqual(key, "attribute")
                 
             default:
@@ -58,17 +58,17 @@ final class SelectTests: XCTestCase {
         }
         do {
             
-            let term = SelectTerm.Attribute("attribute")
-            XCTAssertNotEqual(term, SelectTerm.Attribute("attribute2"))
-            XCTAssertNotEqual(term, SelectTerm.Average("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Count("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Maximum("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Minimum("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Sum("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.ObjectID())
+            let term = SelectTerm.attribute("attribute")
+            XCTAssertNotEqual(term, SelectTerm.attribute("attribute2"))
+            XCTAssertNotEqual(term, SelectTerm.average("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.count("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.maximum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.minimum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.sum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.objectID())
             switch term {
                 
-            case ._Attribute(let key):
+            case ._attribute(let key):
                 XCTAssertEqual(key, "attribute")
                 
             default:
@@ -82,23 +82,23 @@ final class SelectTests: XCTestCase {
         
         do {
             
-            let term = SelectTerm.Average("attribute")
-            XCTAssertEqual(term, SelectTerm.Average("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Average("attribute", As: "alias"))
-            XCTAssertNotEqual(term, SelectTerm.Average("attribute2"))
-            XCTAssertNotEqual(term, SelectTerm.Attribute("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Count("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Maximum("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Minimum("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Sum("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.ObjectID())
+            let term = SelectTerm.average("attribute")
+            XCTAssertEqual(term, SelectTerm.average("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.average("attribute", as: "alias"))
+            XCTAssertNotEqual(term, SelectTerm.average("attribute2"))
+            XCTAssertNotEqual(term, SelectTerm.attribute("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.count("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.maximum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.minimum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.sum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.objectID())
             switch term {
                 
-            case ._Aggregate(let function, let keyPath, let alias, let nativeType):
+            case ._aggregate(let function, let keyPath, let alias, let nativeType):
                 XCTAssertEqual(function, "average:")
                 XCTAssertEqual(keyPath, "attribute")
                 XCTAssertEqual(alias, "average(attribute)")
-                XCTAssertTrue(nativeType == .DecimalAttributeType)
+                XCTAssertTrue(nativeType == .decimalAttributeType)
                 
             default:
                 XCTFail()
@@ -106,23 +106,23 @@ final class SelectTests: XCTestCase {
         }
         do {
             
-            let term = SelectTerm.Average("attribute", As: "alias")
-            XCTAssertEqual(term, SelectTerm.Average("attribute", As: "alias"))
-            XCTAssertNotEqual(term, SelectTerm.Average("attribute", As: "alias2"))
-            XCTAssertNotEqual(term, SelectTerm.Average("attribute2"))
-            XCTAssertNotEqual(term, SelectTerm.Attribute("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Count("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Maximum("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Minimum("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Sum("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.ObjectID())
+            let term = SelectTerm.average("attribute", as: "alias")
+            XCTAssertEqual(term, SelectTerm.average("attribute", as: "alias"))
+            XCTAssertNotEqual(term, SelectTerm.average("attribute", as: "alias2"))
+            XCTAssertNotEqual(term, SelectTerm.average("attribute2"))
+            XCTAssertNotEqual(term, SelectTerm.attribute("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.count("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.maximum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.minimum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.sum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.objectID())
             switch term {
                 
-            case ._Aggregate(let function, let keyPath, let alias, let nativeType):
+            case ._aggregate(let function, let keyPath, let alias, let nativeType):
                 XCTAssertEqual(function, "average:")
                 XCTAssertEqual(keyPath, "attribute")
                 XCTAssertEqual(alias, "alias")
-                XCTAssertTrue(nativeType == .DecimalAttributeType)
+                XCTAssertTrue(nativeType == .decimalAttributeType)
                 
             default:
                 XCTFail()
@@ -135,23 +135,23 @@ final class SelectTests: XCTestCase {
         
         do {
             
-            let term = SelectTerm.Count("attribute")
-            XCTAssertEqual(term, SelectTerm.Count("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Count("attribute", As: "alias"))
-            XCTAssertNotEqual(term, SelectTerm.Count("attribute2"))
-            XCTAssertNotEqual(term, SelectTerm.Attribute("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Average("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Maximum("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Minimum("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Sum("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.ObjectID())
+            let term = SelectTerm.count("attribute")
+            XCTAssertEqual(term, SelectTerm.count("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.count("attribute", as: "alias"))
+            XCTAssertNotEqual(term, SelectTerm.count("attribute2"))
+            XCTAssertNotEqual(term, SelectTerm.attribute("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.average("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.maximum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.minimum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.sum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.objectID())
             switch term {
                 
-            case ._Aggregate(let function, let keyPath, let alias, let nativeType):
+            case ._aggregate(let function, let keyPath, let alias, let nativeType):
                 XCTAssertEqual(function, "count:")
                 XCTAssertEqual(keyPath, "attribute")
                 XCTAssertEqual(alias, "count(attribute)")
-                XCTAssertTrue(nativeType == .Integer64AttributeType)
+                XCTAssertTrue(nativeType == .integer64AttributeType)
                 
             default:
                 XCTFail()
@@ -159,23 +159,23 @@ final class SelectTests: XCTestCase {
         }
         do {
             
-            let term = SelectTerm.Count("attribute", As: "alias")
-            XCTAssertEqual(term, SelectTerm.Count("attribute", As: "alias"))
-            XCTAssertNotEqual(term, SelectTerm.Count("attribute", As: "alias2"))
-            XCTAssertNotEqual(term, SelectTerm.Count("attribute2"))
-            XCTAssertNotEqual(term, SelectTerm.Attribute("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Average("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Maximum("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Minimum("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Sum("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.ObjectID())
+            let term = SelectTerm.count("attribute", as: "alias")
+            XCTAssertEqual(term, SelectTerm.count("attribute", as: "alias"))
+            XCTAssertNotEqual(term, SelectTerm.count("attribute", as: "alias2"))
+            XCTAssertNotEqual(term, SelectTerm.count("attribute2"))
+            XCTAssertNotEqual(term, SelectTerm.attribute("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.average("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.maximum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.minimum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.sum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.objectID())
             switch term {
                 
-            case ._Aggregate(let function, let keyPath, let alias, let nativeType):
+            case ._aggregate(let function, let keyPath, let alias, let nativeType):
                 XCTAssertEqual(function, "count:")
                 XCTAssertEqual(keyPath, "attribute")
                 XCTAssertEqual(alias, "alias")
-                XCTAssertTrue(nativeType == .Integer64AttributeType)
+                XCTAssertTrue(nativeType == .integer64AttributeType)
                 
             default:
                 XCTFail()
@@ -188,23 +188,23 @@ final class SelectTests: XCTestCase {
         
         do {
             
-            let term = SelectTerm.Maximum("attribute")
-            XCTAssertEqual(term, SelectTerm.Maximum("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Maximum("attribute", As: "alias"))
-            XCTAssertNotEqual(term, SelectTerm.Maximum("attribute2"))
-            XCTAssertNotEqual(term, SelectTerm.Attribute("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Average("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Count("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Minimum("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Sum("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.ObjectID())
+            let term = SelectTerm.maximum("attribute")
+            XCTAssertEqual(term, SelectTerm.maximum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.maximum("attribute", as: "alias"))
+            XCTAssertNotEqual(term, SelectTerm.maximum("attribute2"))
+            XCTAssertNotEqual(term, SelectTerm.attribute("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.average("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.count("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.minimum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.sum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.objectID())
             switch term {
                 
-            case ._Aggregate(let function, let keyPath, let alias, let nativeType):
+            case ._aggregate(let function, let keyPath, let alias, let nativeType):
                 XCTAssertEqual(function, "max:")
                 XCTAssertEqual(keyPath, "attribute")
                 XCTAssertEqual(alias, "max(attribute)")
-                XCTAssertTrue(nativeType == .UndefinedAttributeType)
+                XCTAssertTrue(nativeType == .undefinedAttributeType)
                 
             default:
                 XCTFail()
@@ -212,23 +212,23 @@ final class SelectTests: XCTestCase {
         }
         do {
             
-            let term = SelectTerm.Maximum("attribute", As: "alias")
-            XCTAssertEqual(term, SelectTerm.Maximum("attribute", As: "alias"))
-            XCTAssertNotEqual(term, SelectTerm.Maximum("attribute", As: "alias2"))
-            XCTAssertNotEqual(term, SelectTerm.Maximum("attribute2"))
-            XCTAssertNotEqual(term, SelectTerm.Attribute("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Average("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Count("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Minimum("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Sum("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.ObjectID())
+            let term = SelectTerm.maximum("attribute", as: "alias")
+            XCTAssertEqual(term, SelectTerm.maximum("attribute", as: "alias"))
+            XCTAssertNotEqual(term, SelectTerm.maximum("attribute", as: "alias2"))
+            XCTAssertNotEqual(term, SelectTerm.maximum("attribute2"))
+            XCTAssertNotEqual(term, SelectTerm.attribute("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.average("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.count("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.minimum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.sum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.objectID())
             switch term {
                 
-            case ._Aggregate(let function, let keyPath, let alias, let nativeType):
+            case ._aggregate(let function, let keyPath, let alias, let nativeType):
                 XCTAssertEqual(function, "max:")
                 XCTAssertEqual(keyPath, "attribute")
                 XCTAssertEqual(alias, "alias")
-                XCTAssertTrue(nativeType == .UndefinedAttributeType)
+                XCTAssertTrue(nativeType == .undefinedAttributeType)
                 
             default:
                 XCTFail()
@@ -241,23 +241,23 @@ final class SelectTests: XCTestCase {
         
         do {
             
-            let term = SelectTerm.Minimum("attribute")
-            XCTAssertEqual(term, SelectTerm.Minimum("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Minimum("attribute", As: "alias"))
-            XCTAssertNotEqual(term, SelectTerm.Minimum("attribute2"))
-            XCTAssertNotEqual(term, SelectTerm.Attribute("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Average("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Count("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Maximum("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Sum("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.ObjectID())
+            let term = SelectTerm.minimum("attribute")
+            XCTAssertEqual(term, SelectTerm.minimum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.minimum("attribute", as: "alias"))
+            XCTAssertNotEqual(term, SelectTerm.minimum("attribute2"))
+            XCTAssertNotEqual(term, SelectTerm.attribute("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.average("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.count("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.maximum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.sum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.objectID())
             switch term {
                 
-            case ._Aggregate(let function, let keyPath, let alias, let nativeType):
+            case ._aggregate(let function, let keyPath, let alias, let nativeType):
                 XCTAssertEqual(function, "min:")
                 XCTAssertEqual(keyPath, "attribute")
                 XCTAssertEqual(alias, "min(attribute)")
-                XCTAssertTrue(nativeType == .UndefinedAttributeType)
+                XCTAssertTrue(nativeType == .undefinedAttributeType)
                 
             default:
                 XCTFail()
@@ -265,23 +265,23 @@ final class SelectTests: XCTestCase {
         }
         do {
             
-            let term = SelectTerm.Minimum("attribute", As: "alias")
-            XCTAssertEqual(term, SelectTerm.Minimum("attribute", As: "alias"))
-            XCTAssertNotEqual(term, SelectTerm.Minimum("attribute", As: "alias2"))
-            XCTAssertNotEqual(term, SelectTerm.Minimum("attribute2"))
-            XCTAssertNotEqual(term, SelectTerm.Attribute("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Average("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Count("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Maximum("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Sum("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.ObjectID())
+            let term = SelectTerm.minimum("attribute", as: "alias")
+            XCTAssertEqual(term, SelectTerm.minimum("attribute", as: "alias"))
+            XCTAssertNotEqual(term, SelectTerm.minimum("attribute", as: "alias2"))
+            XCTAssertNotEqual(term, SelectTerm.minimum("attribute2"))
+            XCTAssertNotEqual(term, SelectTerm.attribute("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.average("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.count("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.maximum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.sum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.objectID())
             switch term {
                 
-            case ._Aggregate(let function, let keyPath, let alias, let nativeType):
+            case ._aggregate(let function, let keyPath, let alias, let nativeType):
                 XCTAssertEqual(function, "min:")
                 XCTAssertEqual(keyPath, "attribute")
                 XCTAssertEqual(alias, "alias")
-                XCTAssertTrue(nativeType == .UndefinedAttributeType)
+                XCTAssertTrue(nativeType == .undefinedAttributeType)
                 
             default:
                 XCTFail()
@@ -294,23 +294,23 @@ final class SelectTests: XCTestCase {
         
         do {
             
-            let term = SelectTerm.Sum("attribute")
-            XCTAssertEqual(term, SelectTerm.Sum("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Sum("attribute", As: "alias"))
-            XCTAssertNotEqual(term, SelectTerm.Sum("attribute2"))
-            XCTAssertNotEqual(term, SelectTerm.Attribute("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Average("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Count("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Maximum("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Minimum("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.ObjectID())
+            let term = SelectTerm.sum("attribute")
+            XCTAssertEqual(term, SelectTerm.sum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.sum("attribute", as: "alias"))
+            XCTAssertNotEqual(term, SelectTerm.sum("attribute2"))
+            XCTAssertNotEqual(term, SelectTerm.attribute("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.average("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.count("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.maximum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.minimum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.objectID())
             switch term {
                 
-            case ._Aggregate(let function, let keyPath, let alias, let nativeType):
+            case ._aggregate(let function, let keyPath, let alias, let nativeType):
                 XCTAssertEqual(function, "sum:")
                 XCTAssertEqual(keyPath, "attribute")
                 XCTAssertEqual(alias, "sum(attribute)")
-                XCTAssertTrue(nativeType == .DecimalAttributeType)
+                XCTAssertTrue(nativeType == .decimalAttributeType)
                 
             default:
                 XCTFail()
@@ -318,23 +318,23 @@ final class SelectTests: XCTestCase {
         }
         do {
             
-            let term = SelectTerm.Sum("attribute", As: "alias")
-            XCTAssertEqual(term, SelectTerm.Sum("attribute", As: "alias"))
-            XCTAssertNotEqual(term, SelectTerm.Sum("attribute", As: "alias2"))
-            XCTAssertNotEqual(term, SelectTerm.Sum("attribute2"))
-            XCTAssertNotEqual(term, SelectTerm.Attribute("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Average("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Count("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Maximum("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Minimum("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.ObjectID())
+            let term = SelectTerm.sum("attribute", as: "alias")
+            XCTAssertEqual(term, SelectTerm.sum("attribute", as: "alias"))
+            XCTAssertNotEqual(term, SelectTerm.sum("attribute", as: "alias2"))
+            XCTAssertNotEqual(term, SelectTerm.sum("attribute2"))
+            XCTAssertNotEqual(term, SelectTerm.attribute("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.average("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.count("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.maximum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.minimum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.objectID())
             switch term {
                 
-            case ._Aggregate(let function, let keyPath, let alias, let nativeType):
+            case ._aggregate(let function, let keyPath, let alias, let nativeType):
                 XCTAssertEqual(function, "sum:")
                 XCTAssertEqual(keyPath, "attribute")
                 XCTAssertEqual(alias, "alias")
-                XCTAssertTrue(nativeType == .DecimalAttributeType)
+                XCTAssertTrue(nativeType == .decimalAttributeType)
                 
             default:
                 XCTFail()
@@ -347,20 +347,20 @@ final class SelectTests: XCTestCase {
         
         do {
             
-            let term = SelectTerm.ObjectID()
-            XCTAssertEqual(term, SelectTerm.ObjectID())
-            XCTAssertNotEqual(term, SelectTerm.ObjectID(As: "alias"))
-            XCTAssertNotEqual(term, SelectTerm.Attribute("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Average("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Count("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Maximum("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Minimum("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Sum("attribute"))
+            let term = SelectTerm.objectID()
+            XCTAssertEqual(term, SelectTerm.objectID())
+            XCTAssertNotEqual(term, SelectTerm.objectID(as: "alias"))
+            XCTAssertNotEqual(term, SelectTerm.attribute("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.average("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.count("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.maximum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.minimum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.sum("attribute"))
             switch term {
                 
-            case ._Identity(let alias, let nativeType):
+            case ._identity(let alias, let nativeType):
                 XCTAssertEqual(alias, "objectID")
-                XCTAssertTrue(nativeType == .ObjectIDAttributeType)
+                XCTAssertTrue(nativeType == .objectIDAttributeType)
                 
             default:
                 XCTFail()
@@ -368,21 +368,21 @@ final class SelectTests: XCTestCase {
         }
         do {
             
-            let term = SelectTerm.ObjectID(As: "alias")
-            XCTAssertEqual(term, SelectTerm.ObjectID(As: "alias"))
-            XCTAssertNotEqual(term, SelectTerm.ObjectID(As: "alias2"))
-            XCTAssertNotEqual(term, SelectTerm.ObjectID())
-            XCTAssertNotEqual(term, SelectTerm.Attribute("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Average("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Count("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Maximum("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Minimum("attribute"))
-            XCTAssertNotEqual(term, SelectTerm.Sum("attribute"))
+            let term = SelectTerm.objectID(as: "alias")
+            XCTAssertEqual(term, SelectTerm.objectID(as: "alias"))
+            XCTAssertNotEqual(term, SelectTerm.objectID(as: "alias2"))
+            XCTAssertNotEqual(term, SelectTerm.objectID())
+            XCTAssertNotEqual(term, SelectTerm.attribute("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.average("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.count("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.maximum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.minimum("attribute"))
+            XCTAssertNotEqual(term, SelectTerm.sum("attribute"))
             switch term {
                 
-            case ._Identity(let alias, let nativeType):
+            case ._identity(let alias, let nativeType):
                 XCTAssertEqual(alias, "alias")
-                XCTAssertTrue(nativeType == .ObjectIDAttributeType)
+                XCTAssertTrue(nativeType == .objectIDAttributeType)
                 
             default:
                 XCTFail()
@@ -393,9 +393,9 @@ final class SelectTests: XCTestCase {
     @objc
     dynamic func test_ThatSelectClauses_ConfigureCorrectly() {
         
-        let term1 = SelectTerm.Attribute("attribute1")
-        let term2 = SelectTerm.Attribute("attribute2")
-        let term3 = SelectTerm.Attribute("attribute3")
+        let term1 = SelectTerm.attribute("attribute1")
+        let term2 = SelectTerm.attribute("attribute2")
+        let term3 = SelectTerm.attribute("attribute3")
         do {
             
             let select = Select<Int>(term1, term2, term3)

CoreStoreTests/SetupTests.swift

@@ -29,20 +29,24 @@ import CoreStore
 
 // MARK: - SetupTests
 
-class SetupTests: BaseTestCase {
+class SetupTests: BaseTestDataTestCase {
     
     @objc
     dynamic func test_ThatDataStacks_ConfigureCorrectly() {
         
         do {
             
-            let model = NSManagedObjectModel.mergedModelFromBundles([NSBundle(forClass: self.dynamicType)])!
+            let model = NSManagedObjectModel.mergedModel(from: [Bundle(for: type(of: self))])!
             
             let stack = DataStack(model: model, migrationChain: nil)
             XCTAssertEqual(stack.coordinator.managedObjectModel, model)
             XCTAssertEqual(stack.rootSavingContext.persistentStoreCoordinator, stack.coordinator)
-            XCTAssertNil(stack.rootSavingContext.parentContext)
-            XCTAssertEqual(stack.mainContext.parentContext, stack.rootSavingContext)
+            XCTAssertNil(stack.rootSavingContext.parent)
+            XCTAssertFalse(stack.rootSavingContext.isDataStackContext)
+            XCTAssertFalse(stack.rootSavingContext.isTransactionContext)
+            XCTAssertEqual(stack.mainContext.parent, stack.rootSavingContext)
+            XCTAssertTrue(stack.mainContext.isDataStackContext)
+            XCTAssertFalse(stack.mainContext.isTransactionContext)
             XCTAssertEqual(stack.model, model)
             XCTAssertTrue(stack.migrationChain.valid)
             XCTAssertTrue(stack.migrationChain.empty)
@@ -56,11 +60,11 @@ class SetupTests: BaseTestCase {
             
             let migrationChain: MigrationChain = ["version1", "version2", "version3"]
             
-            let stack = self.expectLogger([.LogWarning]) {
+            let stack = self.expectLogger([.logWarning]) {
                 
                 DataStack(
                     modelName: "Model",
-                    bundle: NSBundle(forClass: self.dynamicType),
+                    bundle: Bundle(for: type(of: self)),
                     migrationChain: migrationChain
                 )
             }
@@ -77,7 +81,7 @@ class SetupTests: BaseTestCase {
         
         let stack = DataStack(
             modelName: "Model",
-            bundle: NSBundle(forClass: self.dynamicType)
+            bundle: Bundle(for: type(of: self))
         )
         do {
             
@@ -132,7 +136,7 @@ class SetupTests: BaseTestCase {
         
         let stack = DataStack(
             modelName: "Model",
-            bundle: NSBundle(forClass: self.dynamicType)
+            bundle: Bundle(for: type(of: self))
         )
         do {
             
@@ -154,7 +158,7 @@ class SetupTests: BaseTestCase {
             let sqliteStore = SQLiteStore(
                 fileName: "ConfigStore1.sqlite",
                 configuration: "Config1",
-                localStorageOptions: .RecreateStoreOnModelMismatch
+                localStorageOptions: .recreateStoreOnModelMismatch
             )
             do {
                 
@@ -173,7 +177,7 @@ class SetupTests: BaseTestCase {
             let sqliteStore = SQLiteStore(
                 fileName: "ConfigStore2.sqlite",
                 configuration: "Config2",
-                localStorageOptions: .RecreateStoreOnModelMismatch
+                localStorageOptions: .recreateStoreOnModelMismatch
             )
             do {
                 
@@ -189,16 +193,72 @@ class SetupTests: BaseTestCase {
         }
     }
     
+    @objc
+    dynamic func test_ThatSQLiteStores_DeleteFilesCorrectly() {
+        
+        let fileManager = FileManager.default
+        let sqliteStore = SQLiteStore()
+        func createStore() throws -> [String: Any] {
+            
+            do {
+                
+                let stack = DataStack(
+                    modelName: "Model",
+                    bundle: Bundle(for: type(of: self))
+                )
+                try! stack.addStorageAndWait(sqliteStore)
+                self.prepareTestDataForStack(stack)
+            }
+            XCTAssertTrue(fileManager.fileExists(atPath: sqliteStore.fileURL.path))
+            XCTAssertTrue(fileManager.fileExists(atPath: sqliteStore.fileURL.path.appending("-wal")))
+            XCTAssertTrue(fileManager.fileExists(atPath: sqliteStore.fileURL.path.appending("-shm")))
+            
+            return try NSPersistentStoreCoordinator.metadataForPersistentStore(
+                ofType: type(of: sqliteStore).storeType,
+                at: sqliteStore.fileURL,
+                options: sqliteStore.storeOptions
+            )
+        }
+        do {
+            
+            let metadata = try createStore()
+            let stack = DataStack(
+                modelName: "Model",
+                bundle: Bundle(for: type(of: self))
+            )
+            try sqliteStore.eraseStorageAndWait(metadata: metadata, soureModelHint: stack.model[metadata])
+            XCTAssertFalse(fileManager.fileExists(atPath: sqliteStore.fileURL.path))
+            XCTAssertFalse(fileManager.fileExists(atPath: sqliteStore.fileURL.path.appending("-wal")))
+            XCTAssertFalse(fileManager.fileExists(atPath: sqliteStore.fileURL.path.appending("-shm")))
+        }
+        catch {
+            
+            XCTFail()
+        }
+        do {
+            
+            let metadata = try createStore()
+            try sqliteStore.eraseStorageAndWait(metadata: metadata, soureModelHint: nil)
+            XCTAssertFalse(fileManager.fileExists(atPath: sqliteStore.fileURL.path))
+            XCTAssertFalse(fileManager.fileExists(atPath: sqliteStore.fileURL.path.appending("-wal")))
+            XCTAssertFalse(fileManager.fileExists(atPath: sqliteStore.fileURL.path.appending("-shm")))
+        }
+        catch {
+            
+            XCTFail()
+        }
+    }
+    
     @objc
     dynamic func test_ThatLegacySQLiteStores_SetupCorrectly() {
         
         let stack = DataStack(
             modelName: "Model",
-            bundle: NSBundle(forClass: self.dynamicType)
+            bundle: Bundle(for: type(of: self))
         )
         do {
             
-            let sqliteStore = SQLiteStore()
+            let sqliteStore = LegacySQLiteStore()
             do {
                 
                 try stack.addStorageAndWait(sqliteStore)
@@ -213,10 +273,10 @@ class SetupTests: BaseTestCase {
         }
         do {
             
-            let sqliteStore = SQLiteStore(
+            let sqliteStore = LegacySQLiteStore(
                 fileName: "ConfigStore1.sqlite",
                 configuration: "Config1",
-                localStorageOptions: .RecreateStoreOnModelMismatch
+                localStorageOptions: .recreateStoreOnModelMismatch
             )
             do {
                 
@@ -232,10 +292,10 @@ class SetupTests: BaseTestCase {
         }
         do {
             
-            let sqliteStore = SQLiteStore(
+            let sqliteStore = LegacySQLiteStore(
                 fileName: "ConfigStore2.sqlite",
                 configuration: "Config2",
-                localStorageOptions: .RecreateStoreOnModelMismatch
+                localStorageOptions: .recreateStoreOnModelMismatch
             )
             do {
                 
@@ -250,4 +310,60 @@ class SetupTests: BaseTestCase {
             XCTAssert(sqliteStore.matchesPersistentStore(persistentStore!))
         }
     }
+    
+    @objc
+    dynamic func test_ThatLegacySQLiteStores_DeleteFilesCorrectly() {
+        
+        let fileManager = FileManager.default
+        let sqliteStore = LegacySQLiteStore()
+        func createStore() throws -> [String: Any] {
+            
+            do {
+                
+                let stack = DataStack(
+                    modelName: "Model",
+                    bundle: Bundle(for: type(of: self))
+                )
+                try! stack.addStorageAndWait(sqliteStore)
+                self.prepareTestDataForStack(stack)
+            }
+            XCTAssertTrue(fileManager.fileExists(atPath: sqliteStore.fileURL.path))
+            XCTAssertTrue(fileManager.fileExists(atPath: sqliteStore.fileURL.path.appending("-wal")))
+            XCTAssertTrue(fileManager.fileExists(atPath: sqliteStore.fileURL.path.appending("-shm")))
+            
+            return try NSPersistentStoreCoordinator.metadataForPersistentStore(
+                ofType: type(of: sqliteStore).storeType,
+                at: sqliteStore.fileURL,
+                options: sqliteStore.storeOptions
+            )
+        }
+        do {
+            
+            let metadata = try createStore()
+            let stack = DataStack(
+                modelName: "Model",
+                bundle: Bundle(for: type(of: self))
+            )
+            try sqliteStore.eraseStorageAndWait(metadata: metadata, soureModelHint: stack.model[metadata])
+            XCTAssertFalse(fileManager.fileExists(atPath: sqliteStore.fileURL.path))
+            XCTAssertFalse(fileManager.fileExists(atPath: sqliteStore.fileURL.path.appending("-wal")))
+            XCTAssertFalse(fileManager.fileExists(atPath: sqliteStore.fileURL.path.appending("-shm")))
+        }
+        catch {
+            
+            XCTFail()
+        }
+        do {
+            
+            let metadata = try createStore()
+            try sqliteStore.eraseStorageAndWait(metadata: metadata, soureModelHint: nil)
+            XCTAssertFalse(fileManager.fileExists(atPath: sqliteStore.fileURL.path))
+            XCTAssertFalse(fileManager.fileExists(atPath: sqliteStore.fileURL.path.appending("-wal")))
+            XCTAssertFalse(fileManager.fileExists(atPath: sqliteStore.fileURL.path.appending("-shm")))
+        }
+        catch {
+            
+            XCTFail()
+        }
+    }
 }

CoreStoreTests/StorageInterfaceTests.swift

@@ -37,7 +37,7 @@ final class StorageInterfaceTests: XCTestCase {
     dynamic func test_ThatDefaultInMemoryStores_ConfigureCorrectly() {
         
         let store = InMemoryStore()
-        XCTAssertEqual(store.dynamicType.storeType, NSInMemoryStoreType)
+        XCTAssertEqual(type(of: store).storeType, NSInMemoryStoreType)
         XCTAssertNil(store.configuration)
         XCTAssertNil(store.storeOptions)
     }
@@ -46,7 +46,7 @@ final class StorageInterfaceTests: XCTestCase {
     dynamic func test_ThatCustomInMemoryStores_ConfigureCorrectly() {
         
         let store = InMemoryStore(configuration: "config1")
-        XCTAssertEqual(store.dynamicType.storeType, NSInMemoryStoreType)
+        XCTAssertEqual(type(of: store).storeType, NSInMemoryStoreType)
         XCTAssertEqual(store.configuration, "config1")
         XCTAssertNil(store.storeOptions)
     }
@@ -55,24 +55,23 @@ final class StorageInterfaceTests: XCTestCase {
     dynamic func test_ThatSQLiteStoreDefaultDirectories_AreCorrect() {
         
         #if os(tvOS)
-            let systemDirectorySearchPath = NSSearchPathDirectory.CachesDirectory
+            let systemDirectorySearchPath = FileManager.SearchPathDirectory.cachesDirectory
         #else
-            let systemDirectorySearchPath = NSSearchPathDirectory.ApplicationSupportDirectory
+            let systemDirectorySearchPath = FileManager.SearchPathDirectory.applicationSupportDirectory
         #endif
         
-        let defaultSystemDirectory = NSFileManager
-            .defaultManager()
-            .URLsForDirectory(systemDirectorySearchPath, inDomains: .UserDomainMask).first!
+        let defaultSystemDirectory = FileManager.default
+            .urls(for: systemDirectorySearchPath, in: .userDomainMask).first!
         
-        let defaultRootDirectory = defaultSystemDirectory.URLByAppendingPathComponent(
-            NSBundle.mainBundle().bundleIdentifier ?? "com.CoreStore.DataStack",
+        let defaultRootDirectory = defaultSystemDirectory.appendingPathComponent(
+            Bundle.main.bundleIdentifier ?? "com.CoreStore.DataStack",
             isDirectory: true
         )
-        let applicationName = (NSBundle.mainBundle().objectForInfoDictionaryKey("CFBundleName") as? String) ?? "CoreData"
+        let applicationName = (Bundle.main.object(forInfoDictionaryKey: "CFBundleName") as? String) ?? "CoreData"
         
         let defaultFileURL = defaultRootDirectory
-            .URLByAppendingPathComponent(applicationName, isDirectory: false)
-            .URLByAppendingPathExtension("sqlite")
+            .appendingPathComponent(applicationName, isDirectory: false)
+            .appendingPathExtension("sqlite")
         
         XCTAssertEqual(SQLiteStore.defaultRootDirectory, defaultRootDirectory)
         XCTAssertEqual(SQLiteStore.defaultFileURL, defaultFileURL)
@@ -82,77 +81,76 @@ final class StorageInterfaceTests: XCTestCase {
     dynamic func test_ThatDefaultSQLiteStores_ConfigureCorrectly() {
         
         let store = SQLiteStore()
-        XCTAssertEqual(store.dynamicType.storeType, NSSQLiteStoreType)
+        XCTAssertEqual(type(of: store).storeType, NSSQLiteStoreType)
         XCTAssertNil(store.configuration)
-        XCTAssertEqual(store.storeOptions, [NSSQLitePragmasOption: ["journal_mode": "WAL"]] as NSDictionary)
+        XCTAssertEqual(store.storeOptions as NSDictionary?, [NSSQLitePragmasOption: ["journal_mode": "WAL"]] as NSDictionary)
         
         XCTAssertEqual(store.fileURL, SQLiteStore.defaultFileURL)
-        XCTAssertEqual(store.mappingModelBundles, NSBundle.allBundles())
-        XCTAssertEqual(store.localStorageOptions, [.None])
+        XCTAssertEqual(store.mappingModelBundles, Bundle.allBundles)
+        XCTAssertEqual(store.localStorageOptions, .none)
     }
     
     @objc
     dynamic func test_ThatFileURLSQLiteStores_ConfigureCorrectly() {
         
         let fileURL = NSURL(fileURLWithPath: NSTemporaryDirectory())
-            .URLByAppendingPathComponent(NSUUID().UUIDString, isDirectory: false)
-            .URLByAppendingPathExtension("db")
-        let bundles = [NSBundle(forClass: self.dynamicType)]
+            .appendingPathComponent(NSUUID().uuidString, isDirectory: false)!
+            .appendingPathExtension("db")
+        let bundles = [Bundle(for: type(of: self))]
         
         let store = SQLiteStore(
             fileURL: fileURL,
             configuration: "config1",
             mappingModelBundles: bundles,
-            localStorageOptions: .RecreateStoreOnModelMismatch
+            localStorageOptions: .recreateStoreOnModelMismatch
         )
-        XCTAssertEqual(store.dynamicType.storeType, NSSQLiteStoreType)
+        XCTAssertEqual(type(of: store).storeType, NSSQLiteStoreType)
         XCTAssertEqual(store.configuration, "config1")
-        XCTAssertEqual(store.storeOptions, [NSSQLitePragmasOption: ["journal_mode": "WAL"]] as NSDictionary)
+        XCTAssertEqual(store.storeOptions as NSDictionary?, [NSSQLitePragmasOption: ["journal_mode": "WAL"]] as NSDictionary)
         
         XCTAssertEqual(store.fileURL, fileURL)
         XCTAssertEqual(store.mappingModelBundles, bundles)
-        XCTAssertEqual(store.localStorageOptions, [.RecreateStoreOnModelMismatch])
+        XCTAssertEqual(store.localStorageOptions, [.recreateStoreOnModelMismatch])
     }
     
     @objc
     dynamic func test_ThatFileNameSQLiteStores_ConfigureCorrectly() {
         
-        let fileName = NSUUID().UUIDString + ".db"
-        let bundles = [NSBundle(forClass: self.dynamicType)]
+        let fileName = UUID().uuidString + ".db"
+        let bundles = [Bundle(for: type(of: self))]
         
         let store = SQLiteStore(
             fileName: fileName,
             configuration: "config1",
             mappingModelBundles: bundles,
-            localStorageOptions: .RecreateStoreOnModelMismatch
+            localStorageOptions: .recreateStoreOnModelMismatch
         )
-        XCTAssertEqual(store.dynamicType.storeType, NSSQLiteStoreType)
+        XCTAssertEqual(type(of: store).storeType, NSSQLiteStoreType)
         XCTAssertEqual(store.configuration, "config1")
-        XCTAssertEqual(store.storeOptions, [NSSQLitePragmasOption: ["journal_mode": "WAL"]] as NSDictionary)
+        XCTAssertEqual(store.storeOptions as NSDictionary?, [NSSQLitePragmasOption: ["journal_mode": "WAL"]] as NSDictionary)
         
-        XCTAssertEqual(store.fileURL.URLByDeletingLastPathComponent, SQLiteStore.defaultRootDirectory)
+        XCTAssertEqual(store.fileURL.deletingLastPathComponent(), SQLiteStore.defaultRootDirectory)
         XCTAssertEqual(store.fileURL.lastPathComponent, fileName)
         XCTAssertEqual(store.mappingModelBundles, bundles)
-        XCTAssertEqual(store.localStorageOptions, [.RecreateStoreOnModelMismatch])
+        XCTAssertEqual(store.localStorageOptions, [.recreateStoreOnModelMismatch])
     }
     
     @objc
     dynamic func test_ThatLegacySQLiteStoreDefaultDirectories_AreCorrect() {
         
         #if os(tvOS)
-            let systemDirectorySearchPath = NSSearchPathDirectory.CachesDirectory
+            let systemDirectorySearchPath = FileManager.SearchPathDirectory.cachesDirectory
         #else
-            let systemDirectorySearchPath = NSSearchPathDirectory.ApplicationSupportDirectory
+            let systemDirectorySearchPath = FileManager.SearchPathDirectory.applicationSupportDirectory
         #endif
         
-        let legacyDefaultRootDirectory = NSFileManager.defaultManager().URLsForDirectory(
-            systemDirectorySearchPath,
-            inDomains: .UserDomainMask
-            ).first!
+        let legacyDefaultRootDirectory = FileManager.default.urls(
+            for: systemDirectorySearchPath,
+            in: .userDomainMask).first!
         
         let legacyDefaultFileURL = legacyDefaultRootDirectory
-            .URLByAppendingPathComponent(DataStack.applicationName, isDirectory: false)
-            .URLByAppendingPathExtension("sqlite")
+            .appendingPathComponent(DataStack.applicationName, isDirectory: false)
+            .appendingPathExtension("sqlite")
         
         XCTAssertEqual(LegacySQLiteStore.defaultRootDirectory, legacyDefaultRootDirectory)
         XCTAssertEqual(LegacySQLiteStore.defaultFileURL, legacyDefaultFileURL)
@@ -162,57 +160,57 @@ final class StorageInterfaceTests: XCTestCase {
     dynamic func test_ThatDefaultLegacySQLiteStores_ConfigureCorrectly() {
         
         let store = LegacySQLiteStore()
-        XCTAssertEqual(store.dynamicType.storeType, NSSQLiteStoreType)
+        XCTAssertEqual(type(of: store).storeType, NSSQLiteStoreType)
         XCTAssertNil(store.configuration)
-        XCTAssertEqual(store.storeOptions, [NSSQLitePragmasOption: ["journal_mode": "WAL"]] as NSDictionary)
+        XCTAssertEqual(store.storeOptions as NSDictionary?, [NSSQLitePragmasOption: ["journal_mode": "WAL"]] as NSDictionary)
         
         XCTAssertEqual(store.fileURL, LegacySQLiteStore.defaultFileURL)
-        XCTAssertEqual(store.mappingModelBundles, NSBundle.allBundles())
-        XCTAssertEqual(store.localStorageOptions, [.None])
+        XCTAssertEqual(store.mappingModelBundles, Bundle.allBundles)
+        XCTAssertEqual(store.localStorageOptions, .none)
     }
     
     @objc
     dynamic func test_ThatFileURLLegacySQLiteStores_ConfigureCorrectly() {
         
         let fileURL = NSURL(fileURLWithPath: NSTemporaryDirectory())
-            .URLByAppendingPathComponent(NSUUID().UUIDString, isDirectory: false)
-            .URLByAppendingPathExtension("db")
-        let bundles = [NSBundle(forClass: self.dynamicType)]
+            .appendingPathComponent(NSUUID().uuidString, isDirectory: false)!
+            .appendingPathExtension("db")
+        let bundles = [Bundle(for: type(of: self))]
         
         let store = LegacySQLiteStore(
             fileURL: fileURL,
             configuration: "config1",
             mappingModelBundles: bundles,
-            localStorageOptions: .RecreateStoreOnModelMismatch
+            localStorageOptions: .recreateStoreOnModelMismatch
         )
-        XCTAssertEqual(store.dynamicType.storeType, NSSQLiteStoreType)
+        XCTAssertEqual(type(of: store).storeType, NSSQLiteStoreType)
         XCTAssertEqual(store.configuration, "config1")
-        XCTAssertEqual(store.storeOptions, [NSSQLitePragmasOption: ["journal_mode": "WAL"]] as NSDictionary)
+        XCTAssertEqual(store.storeOptions as NSDictionary?, [NSSQLitePragmasOption: ["journal_mode": "WAL"]] as NSDictionary)
         
         XCTAssertEqual(store.fileURL, fileURL)
         XCTAssertEqual(store.mappingModelBundles, bundles)
-        XCTAssertEqual(store.localStorageOptions, [.RecreateStoreOnModelMismatch])
+        XCTAssertEqual(store.localStorageOptions, [.recreateStoreOnModelMismatch])
     }
     
     @objc
     dynamic func test_ThatFileNameLegacySQLiteStores_ConfigureCorrectly() {
         
-        let fileName = NSUUID().UUIDString + ".db"
-        let bundles = [NSBundle(forClass: self.dynamicType)]
+        let fileName = UUID().uuidString + ".db"
+        let bundles = [Bundle(for: type(of: self))]
         
         let store = LegacySQLiteStore(
             fileName: fileName,
             configuration: "config1",
             mappingModelBundles: bundles,
-            localStorageOptions: .RecreateStoreOnModelMismatch
+            localStorageOptions: .recreateStoreOnModelMismatch
         )
-        XCTAssertEqual(store.dynamicType.storeType, NSSQLiteStoreType)
+        XCTAssertEqual(type(of: store).storeType, NSSQLiteStoreType)
         XCTAssertEqual(store.configuration, "config1")
-        XCTAssertEqual(store.storeOptions, [NSSQLitePragmasOption: ["journal_mode": "WAL"]] as NSDictionary)
+        XCTAssertEqual(store.storeOptions as NSDictionary?, [NSSQLitePragmasOption: ["journal_mode": "WAL"]] as NSDictionary)
         
-        XCTAssertEqual(store.fileURL.URLByDeletingLastPathComponent, LegacySQLiteStore.defaultRootDirectory)
+        XCTAssertEqual(store.fileURL.deletingLastPathComponent(), LegacySQLiteStore.defaultRootDirectory)
         XCTAssertEqual(store.fileURL.lastPathComponent, fileName)
         XCTAssertEqual(store.mappingModelBundles, bundles)
-        XCTAssertEqual(store.localStorageOptions, [.RecreateStoreOnModelMismatch])
+        XCTAssertEqual(store.localStorageOptions, [.recreateStoreOnModelMismatch])
     }
 }

CoreStoreTests/TestEntities/TestEntity1.swift

@@ -31,9 +31,9 @@ class TestEntity1: NSManagedObject {
     @NSManaged var testEntityID: NSNumber?
     @NSManaged var testString: String?
     @NSManaged var testNumber: NSNumber?
-    @NSManaged var testDate: NSDate?
+    @NSManaged var testDate: Date?
     @NSManaged var testBoolean: NSNumber?
     @NSManaged var testDecimal: NSDecimalNumber?
-    @NSManaged var testData: NSData?
+    @NSManaged var testData: Data?
     @NSManaged var testNil: String?
 }

CoreStoreTests/TestEntities/TestEntity2.swift

@@ -31,9 +31,9 @@ class TestEntity2: NSManagedObject {
     @NSManaged var testEntityID: NSNumber?
     @NSManaged var testString: String?
     @NSManaged var testNumber: NSNumber?
-    @NSManaged var testDate: NSDate?
+    @NSManaged var testDate: Date?
     @NSManaged var testBoolean: NSNumber?
     @NSManaged var testDecimal: NSDecimalNumber?
-    @NSManaged var testData: NSData?
+    @NSManaged var testData: Data?
     @NSManaged var testNil: String?
 }

CoreStoreTests/TweakTests.swift

@@ -43,7 +43,7 @@ final class TweakTests: XCTestCase {
             $0.fetchLimit = 200
             $0.predicate = predicate
         }
-        let request = NSFetchRequest()
+        let request = CoreStoreFetchRequest()
         tweak.applyToFetchRequest(request)
         XCTAssertEqual(request.fetchOffset, 100)
         XCTAssertEqual(request.fetchLimit, 200)

CoreStoreTests/WhereTests.swift

@@ -29,6 +29,25 @@ import XCTest
 import CoreStore
 
 
+// MARK: - XCTAssertAllEqual
+
+private func XCTAssertAllEqual(_ whereClauses: Where...) {
+    
+    XCTAssertAllEqual(whereClauses)
+}
+
+private func XCTAssertAllEqual(_ whereClauses: [Where]) {
+    
+    for i in whereClauses.indices {
+        
+        for j in whereClauses.indices where j != i {
+            
+            XCTAssertEqual(whereClauses[i], whereClauses[j])
+        }
+    }
+}
+
+
 //MARK: - WhereTests
 
 final class WhereTests: XCTestCase {
@@ -87,6 +106,123 @@ final class WhereTests: XCTestCase {
         }
     }
     
+    @objc
+    dynamic func test_ThatWhereClauses_BridgeArgumentsCorrectly() {
+        
+        do {
+            
+            let value: Int = 100
+            XCTAssertAllEqual(
+                Where("%K == %d", "key", value),
+                Where("%K == %d", "key", value as AnyObject),
+                Where("%K == %d", "key", NSNumber(value: value)),
+                Where("%K == %@", "key", value),
+                Where("%K == %@", "key", value as AnyObject),
+                Where("%K == %@", "key", NSNumber(value: value)),
+                Where("key", isEqualTo: value),
+                Where("key", isEqualTo: NSNumber(value: value))
+            )
+        }
+        do {
+            
+            let value = NSNumber(value: 100)
+            XCTAssertAllEqual(
+                Where("%K == %d", "key", value),
+                Where("%K == %d", "key", value as AnyObject),
+                Where("%K == %d", "key", value.intValue),
+                Where("%K == %@", "key", value),
+                Where("%K == %@", "key", value as AnyObject),
+                Where("%K == %@", "key", value.intValue),
+                Where("key", isEqualTo: value),
+                Where("key", isEqualTo: value.intValue)
+            )
+        }
+        do {
+            
+            let value: Int64 = Int64.max
+            XCTAssertAllEqual(
+                Where("%K == %d", "key", value),
+                Where("%K == %d", "key", value as AnyObject),
+                Where("%K == %d", "key", NSNumber(value: value)),
+                Where("%K == %@", "key", value),
+                Where("%K == %@", "key", value as AnyObject),
+                Where("%K == %@", "key", NSNumber(value: value)),
+                Where("key", isEqualTo: value),
+                Where("key", isEqualTo: NSNumber(value: value))
+            )
+        }
+        do {
+            
+            let value = NSNumber(value: Int64.max)
+            XCTAssertAllEqual(
+                Where("%K == %d", "key", value),
+                Where("%K == %d", "key", value as AnyObject),
+                Where("%K == %d", "key", value.int64Value),
+                Where("%K == %@", "key", value),
+                Where("%K == %@", "key", value as AnyObject),
+                Where("%K == %@", "key", value.int64Value),
+                Where("key", isEqualTo: value),
+                Where("key", isEqualTo: value.int64Value)
+            )
+        }
+        do {
+            
+            let value: String = "value"
+            XCTAssertAllEqual(
+                Where("%K == %s", "key", value),
+                Where("%K == %s", "key", value as AnyObject),
+                Where("%K == %s", "key", NSString(string: value)),
+                Where("%K == %@", "key", value),
+                Where("%K == %@", "key", value as AnyObject),
+                Where("%K == %@", "key", NSString(string: value)),
+                Where("key", isEqualTo: value),
+                Where("key", isEqualTo: value as NSString),
+                Where("key", isEqualTo: NSString(string: value))
+            )
+        }
+        do {
+            
+            let value = NSString(string: "value")
+            XCTAssertAllEqual(
+                Where("%K == %s", "key", value),
+                Where("%K == %s", "key", value as String),
+                Where("%K == %s", "key", value as String as AnyObject),
+                Where("%K == %@", "key", value),
+                Where("%K == %@", "key", value as String),
+                Where("%K == %@", "key", value as String as AnyObject),
+                Where("key", isEqualTo: value),
+                Where("key", isEqualTo: value as String),
+                Where("key", isEqualTo: value as String as NSString)
+            )
+        }
+        do {
+            
+            let value: [Int] = [100, 200]
+            XCTAssertAllEqual(
+                Where("%K IN %@", "key", value),
+                Where("%K IN %@", "key", value as AnyObject),
+                Where("%K IN %@", "key", value as [AnyObject]),
+                Where("%K IN %@", "key", value as NSArray),
+                Where("%K IN %@", "key", NSArray(array: value)),
+                Where("%K IN %@", "key", value as AnyObject as! NSArray),
+                Where("key", isMemberOf: value)
+            )
+        }
+        do {
+            
+            let value: [Int64] = [Int64.min, 100, Int64.max]
+            XCTAssertAllEqual(
+                Where("%K IN %@", "key", value),
+                Where("%K IN %@", "key", value as AnyObject),
+                Where("%K IN %@", "key", value as [AnyObject]),
+                Where("%K IN %@", "key", value as NSArray),
+                Where("%K IN %@", "key", NSArray(array: value)),
+                Where("%K IN %@", "key", value as AnyObject as! NSArray),
+                Where("key", isMemberOf: value)
+            )
+        }
+    }
+    
     @objc
     dynamic func test_ThatWhereClauseOperations_ComputeCorrectly() {
         
@@ -98,7 +234,7 @@ final class WhereTests: XCTestCase {
             
             let notWhere = !whereClause1
             let notPredicate = NSCompoundPredicate(
-                type: .NotPredicateType,
+                type: .not,
                 subpredicates: [whereClause1.predicate]
             )
             XCTAssertEqual(notWhere.predicate, notPredicate)
@@ -108,10 +244,10 @@ final class WhereTests: XCTestCase {
             
             let andWhere = whereClause1 && whereClause2 && whereClause3
             let andPredicate = NSCompoundPredicate(
-                type: .AndPredicateType,
+                type: .and,
                 subpredicates: [
                     NSCompoundPredicate(
-                        type: .AndPredicateType,
+                        type: .and,
                         subpredicates: [whereClause1.predicate, whereClause2.predicate]
                     ),
                     whereClause3.predicate
@@ -124,10 +260,10 @@ final class WhereTests: XCTestCase {
             
             let orWhere = whereClause1 || whereClause2 || whereClause3
             let orPredicate = NSCompoundPredicate(
-                type: .OrPredicateType,
+                type: .or,
                 subpredicates: [
                     NSCompoundPredicate(
-                        type: .OrPredicateType,
+                        type: .or,
                         subpredicates: [whereClause1.predicate, whereClause2.predicate]
                     ),
                     whereClause3.predicate
@@ -142,7 +278,7 @@ final class WhereTests: XCTestCase {
     dynamic func test_ThatWhereClauses_ApplyToFetchRequestsCorrectly() {
         
         let whereClause = Where("key", isEqualTo: "value")
-        let request = NSFetchRequest()
+        let request = CoreStoreFetchRequest()
         whereClause.applyToFetchRequest(request)
         XCTAssertNotNil(request.predicate)
         XCTAssertEqual(request.predicate, whereClause.predicate)

Package.swift

@@ -41,11 +41,5 @@ targets = []
 let package = Package(
     name: "CoreStore",
     targets: targets,
-    dependencies: [
-        .Package(
-            url: "https://github.com/JohnEstropia/GCDKit.git",
-            "1.2.6"
-        )
-    ],
     exclude: ["Carthage", "CoreStoreDemo", "Sources/libA/images"]
 )

README.md

@@ -17,11 +17,10 @@ Unleashing the real power of Core Data with the elegance and safety of Swift
 <a href="https://twitter.com/JohnEstropia"><img alt="Reach me on Twitter!" src="https://img.shields.io/badge/twitter-%40JohnEstropia-3498db.svg" /></a>
 <br />
 </p>
-* Swift 2.2 (Xcode 7.3)
-* iOS 7+ / macOS 10.10+ / watchOS 2.0+ / tvOS 9.0+
-* **New in CoreStore 2.0:** Objective-C support! All CoreStore types now have their corresponding Objective-C "bridging classes". Perfect for projects transitioning from Objective-C to Swift!
 
-Upgrading from CoreStore 1.x to 2.x? Check out the [new features](#new-in-corestore-20) and make sure to read the [Migration guide](#upgrading-from-1xx-to-2xx).
+* **Swift 3.0.1:** iOS 8+ / macOS 10.10+ / watchOS 2.0+ / tvOS 9.0+
+
+Upgrading from CoreStore 2.x to 3.x? Check out the [new features](#features) and make sure to read the [Migration guide](#upgrading-from-2xx-to-3xx).
 
 
 ## Why use CoreStore?
@@ -40,12 +39,10 @@ CoreStore was (and is) heavily shaped by real-world needs of developing data-dep
 - **Efficient importing utilities.** Map your entities once with their corresponding import source (JSON for example), and importing from *transactions* becomes elegant. Uniquing is also done with an efficient find-and-replace algorithm. *(See [Importing data](#importing-data))*
 - **Tight design around Swift’s code elegance and type safety.** CoreStore fully utilizes Swift's community-driven language features.
 - **Full Documentation.** No magic here; all public classes, functions, properties, etc. have detailed *Apple Docs*. This *README* also introduces a lot of concepts and explains a lot of CoreStore's behavior.
-
-### New in CoreStore 2.0
 - **Informative (and pretty) logs.** All CoreStore and Core Data-related types now have very informative and pretty print outputs! *(See [Logging and error reporting](#logging-and-error-reporting))*
-- **Objective-C support!** Is your project transitioning from Objective-C to Swift but still can't quite fully convert some huge classes to Swift yet? CoreStore 2.0 is the answer to the ever-increasing Swift adoption. While still written in pure Swift, all CoreStore types now have their corresponding Objective-C-visible "bridging classes". *(See [Objective-C support](#objective-c-support))*
-- **iCloud storage (beta) support.** CoreStore now allows creation of iCloud persistent stores, as well as observing of iCloud-related events through the `ICloudStoreObserver`. *(See [iCloud storage](#icloud-storages))*
-- **More extensive Unit Tests.** Extending CoreStore is now safer without having to worry about breaking old behavior.
+- **Objective-C support!** Is your project transitioning from Objective-C to Swift but still can't quite fully convert some huge classes to Swift yet? CoreStore adjusts to the ever-increasing Swift adoption. While still written in pure Swift, all CoreStore types have their corresponding Objective-C-visible "bridging classes". *(See [Objective-C support](#objective-c-support))*
+- **iCloud storage (beta) support.** CoreStore allows creation of iCloud persistent stores, as well as observing of iCloud-related events through the `ICloudStoreObserver`. *(See [iCloud storage](#icloud-storages))*
+- **More extensive Unit Tests.** Extending CoreStore is safe without having to worry about breaking old behavior.
 
 *Have ideas that may benefit other Core Data users? [Feature Request](https://github.com/JohnEstropia/CoreStore/issues)s are welcome!*
 
@@ -88,6 +85,7 @@ CoreStore was (and is) heavily shaped by real-world needs of developing data-dep
 - [Roadmap](#roadmap)
 - [Installation](#installation)
 - [Changesets](#changesets)
+    - [Upgrading from 2.x.x to 3.x.x](#upgrading-from-2xx-to-3xx)
     - [Upgrading from 1.x.x to 2.x.x](#upgrading-from-1xx-to-2xx)
 - [Contact](#contact)
 - [Who uses CoreStore?](#who-uses-corestore)
@@ -118,14 +116,14 @@ CoreStore.addStorage(
 Starting transactions:
 ```swift
 CoreStore.beginAsynchronous { (transaction) -> Void in
-    let person = transaction.create(Into(MyPersonEntity))
+    let person = transaction.create(Into<MyPersonEntity>())
     person.name = "John Smith"
     person.age = 42
 
     transaction.commit { (result) -> Void in
         switch result {
-            case .Success(let hasChanges): print("success!")
-            case .Failure(let error): print(error)
+            case .success(let hasChanges): print("success!")
+            case .failure(let error): print(error)
         }
     }
 }
@@ -133,15 +131,15 @@ CoreStore.beginAsynchronous { (transaction) -> Void in
 
 Fetching objects (simple):
 ```swift
-let people = CoreStore.fetchAll(From(MyPersonEntity))
+let people = CoreStore.fetchAll(From<MyPersonEntity>())
 ```
 
 Fetching objects (complex):
 ```swift
 let people = CoreStore.fetchAll(
-    From(MyPersonEntity),
+    From<MyPersonEntity>(),
     Where("age > 30"),
-    OrderBy(.Ascending("name"), .Descending("age")),
+    OrderBy(.ascending("name"), .descending("age")),
     Tweak { (fetchRequest) -> Void in
         fetchRequest.includesPendingChanges = false
     }
@@ -151,8 +149,8 @@ let people = CoreStore.fetchAll(
 Querying values:
 ```swift
 let maxAge = CoreStore.queryValue(
-    From(MyPersonEntity),
-    Select<Int>(.Maximum("age"))
+    From<MyPersonEntity>(),
+    Select<Int>(.maximum("age"))
 )
 ```
 
@@ -206,13 +204,13 @@ let migrationProgress = dataStack.addStorage(
     SQLiteStore(
         fileURL: sqliteFileURL, // set the target file URL for the sqlite file
         configuration: "Config2", // use entities from the "Config2" configuration in the .xcdatamodeld file
-        localStorageOptions: .RecreateStoreOnModelMismatch // if migration paths cannot be resolved, recreate the sqlite file
+        localStorageOptions: .recreateStoreOnModelMismatch // if migration paths cannot be resolved, recreate the sqlite file
     ),
     completion: { (result) -> Void in
         switch result {
-        case .Success(let storage):
+        case .success(let storage):
             print("Successfully added sqlite store: \(storage)"
-        case .Failure(let error):
+        case .failure(let error):
             print("Failed adding sqlite store with error: \(error)"
         }
     }
@@ -231,7 +229,7 @@ class MyViewController: UIViewController {
     override func viewDidLoad() {
         super.viewDidLoad()
         do {
-            try self.dataStack.addStorageAndWait(SQLiteStore)
+            try self.dataStack.addStorageAndWait(SQLiteStore.self)
         }
         catch { // ...
         }
@@ -249,7 +247,7 @@ class MyViewController: UIViewController {
     override func viewDidLoad() {
         super.viewDidLoad()
         do {
-            try CoreStore.addStorageAndWait(SQLiteStore)
+            try CoreStore.addStorageAndWait(SQLiteStore.self)
         }
         catch { // ...
         }
@@ -274,7 +272,7 @@ try CoreStore.addStorageAndWait(
 ```
 `InMemoryStore`s also implement the `DefaultInitializableStore` sugar protocol which tells CoreStore that this store can initialize without any arguments (`init()`). This lets us provide just the type instead of an instance:
 ```swift
-try CoreStore.addStorageAndWait(InMemoryStore)
+try CoreStore.addStorageAndWait(InMemoryStore.self)
 ```
 
 ### Local Store
@@ -285,7 +283,7 @@ let migrationProgress = CoreStore.addStorage(
         fileName: "MyStore.sqlite",
         configuration: "Config2", // optional. Use entities from the "Config2" configuration in the .xcdatamodeld file
         mappingModelBundles: [NSBundle.mainBundle()], // optional. The bundles that contain required .xcmappingmodel files, if any
-        localStorageOptions: .RecreateStoreOnModelMismatch // optional. Provides settings that tells the DataStack how to setup the persistent store
+        localStorageOptions: .recreateStoreOnModelMismatch // optional. Provides settings that tells the DataStack how to setup the persistent store
     ),
     completion: { /* ... */ }
 )
@@ -294,7 +292,7 @@ Refer to the *SQLiteStore.swift* source documentation for detailed explanations
 
 CoreStore can decide the default values for these properties, so `SQLiteStore`s also implement the `DefaultInitializableStore` sugar protocol which lets us write:
 ```swift
-try CoreStore.addStorageAndWait(SQLiteStore)
+try CoreStore.addStorageAndWait(SQLiteStore.self)
 ```
 or
 ```swift
@@ -307,8 +305,8 @@ public protocol LocalStorage: StorageInterface {
     var fileURL: NSURL { get }
     var mappingModelBundles: [NSBundle] { get }
     var localStorageOptions: LocalStorageOptions { get }
-    func storeOptionsForOptions(options: LocalStorageOptions) -> [String: AnyObject]?
-    func eraseStorageAndWait(soureModel soureModel: NSManagedObjectModel) throws
+    func dictionary(forOptions: LocalStorageOptions) -> [String: AnyObject]?
+    func eraseStorageAndWait(metadata: [String: Any], soureModelHint: NSManagedObjectModel?) throws
 }
 ```
 If you have custom `NSIncrementalStore` or `NSAtomicStore` subclasses, you can implement this protocol and use it similarly to `SQLiteStore`.
@@ -324,7 +322,7 @@ guard let storage = ICloudStore(
     ubiquitousContainerID: "iCloud.com.mycompany.myapp.containername", // optional. The container if your app has multiple ubiquity container identifiers in its entitlements
     ubiquitousPeerToken: "9614d658014f4151a95d8048fb717cf0", // optional. A per-application salt to allow multiple apps on the same device to share a Core Data store integrated with iCloud
     configuration: "Config1", // optional. Use entities from the "Config1" configuration in the .xcdatamodeld file
-    cloudStorageOptions: .RecreateLocalStoreOnModelMismatch // optional. Provides settings that tells the DataStack how to setup the persistent store
+    cloudStorageOptions: .recreateLocalStoreOnModelMismatch // optional. Provides settings that tells the DataStack how to setup the persistent store
 ) else {
     // The iCloud container could not be located or if iCloud is not available on the device.
     // Handle appropriately
@@ -334,8 +332,8 @@ CoreStore.addStorage(,
     storage,
     completion: { result in
         switch result {
-        case .Success(let storage): // ...
-        case .Failure(let error): // ...
+        case .success(let storage): // ...
+        case .failure(let error): // ...
         }
     }
 )
@@ -365,8 +363,8 @@ CoreStore.addStorage(,
     storage,
     completion: { result in
         switch result {
-        case .Success(let storage): // ... You may also call storage.addObserver(_:) here
-        case .Failure(let error): // ...
+        case .success(let storage): // ... You may also call storage.addObserver(_:) here
+        case .failure(let error): // ...
         }
     }
 )
@@ -375,12 +373,12 @@ The `ICloudStore` only keeps weak references of the registered observers. You ma
 
 
 ## Migrations
-We have seen `addStorageAndWait(...)` used to initialize our persistent store. As the method name's "AndWait" suffix suggests though, this method blocks so it should not do long tasks such as store migrations. In fact CoreStore will only attempt a synchronous **lightweight** migration if you explicitly provide the `.AllowSynchronousLightweightMigration` option:
+We have seen `addStorageAndWait(...)` used to initialize our persistent store. As the method name's "AndWait" suffix suggests though, this method blocks so it should not do long tasks such as store migrations. In fact CoreStore will only attempt a synchronous **lightweight** migration if you explicitly provide the `.allowSynchronousLightweightMigration` option:
 ```swift
 try dataStack.addStorageAndWait(
     SQLiteStore(
         fileURL: sqliteFileURL,
-        localStorageOptions: .AllowSynchronousLightweightMigration
+        localStorageOptions: .allowSynchronousLightweightMigration
     )
 }
 ```
@@ -388,16 +386,16 @@ if you do so, any model mismatch will be thrown as an error.
 
 In general though, if migrations are expected the asynchronous variant `addStorage(_:completion:)` method is recommended instead:
 ```swift
-let migrationProgress: NSProgress? = try dataStack.addStorage(
+let migrationProgress: Progress? = try dataStack.addStorage(
     SQLiteStore(
         fileName: "MyStore.sqlite",
         configuration: "Config2"
     ),
     completion: { (result) -> Void in
         switch result {
-        case .Success(let storage):
+        case .success(let storage):
             print("Successfully added sqlite store: \(storage)")
-        case .Failure(let error):
+        case .failure(let error):
             print("Failed adding sqlite store with error: \(error)")
         }
     }
@@ -405,7 +403,7 @@ let migrationProgress: NSProgress? = try dataStack.addStorage(
 ```
 The `completion` block reports a `SetupResult` that indicates success or failure.
 
-Notice that this method also returns an optional `NSProgress`. If `nil`, no migrations are needed, thus progress reporting is unnecessary as well. If not `nil`, you can use this to track migration progress by using standard KVO on the `"fractionCompleted"` key, or by using a closure-based utility exposed in *NSProgress+Convenience.swift*:
+Notice that this method also returns an optional `Progress`. If `nil`, no migrations are needed, thus progress reporting is unnecessary as well. If not `nil`, you can use this to track migration progress by using standard KVO on the `"fractionCompleted"` key, or by using a closure-based utility exposed in *Progress+Convenience.swift*:
 ```swift
 migrationProgress?.setProgressHandler { [weak self] (progress) -> Void in
     self?.progressView?.setProgress(Float(progress.fractionCompleted), animated: true)
@@ -521,7 +519,7 @@ are created from `beginSynchronous(...)`. While the syntax is similar to its asy
 ```swift
 CoreStore.beginSynchronous { (transaction) -> Void in
     // make changes
-    transaction.commit()
+    _ = transaction.commit()
 } 
 ```
 `transaction` above is a `SynchronousDataTransaction` instance.
@@ -555,7 +553,7 @@ You've seen how to create transactions, but we have yet to see how to make *crea
 
 The `create(...)` method accepts an `Into` clause which specifies the entity for the object you want to create:
 ```swift
-let person = transaction.create(Into(MyPersonEntity))
+let person = transaction.create(Into<MyPersonEntity>())
 ```
 While the syntax is straightforward, CoreStore does not just naively insert a new object. This single line does the following:
 - Checks that the entity type exists in any of the transaction's parent persistent store
@@ -578,7 +576,7 @@ Note that if you do explicitly specify the configuration name, CoreStore will on
 After creating an object from the transaction, you can simply update its properties as normal:
 ```swift
 CoreStore.beginAsynchronous { (transaction) -> Void in
-    let person = transaction.create(Into(MyPersonEntity))
+    let person = transaction.create(Into<MyPersonEntity>())
     person.name = "John Smith"
     person.age = 30
     transaction.commit()
@@ -588,7 +586,7 @@ To update an existing object, fetch the object's instance from the transaction:
 ```swift
 CoreStore.beginAsynchronous { (transaction) -> Void in
     let person = transaction.fetchOne(
-        From(MyPersonEntity),
+        From<MyPersonEntity>(),
         Where("name", isEqualTo: "Jane Smith")
     )
     person.age = person.age + 1
@@ -650,7 +648,7 @@ If you do not have references yet to the objects to be deleted, transactions hav
 ```swift
 CoreStore.beginAsynchronous { (transaction) -> Void in
     transaction.deleteAll(
-        From(MyPersonEntity)
+        From<MyPersonEntity>(),
         Where("age > 30")
     )
     transaction.commit()
@@ -688,7 +686,7 @@ var peopleIDs: [NSManagedObjectID] = // ...
 
 CoreStore.beginAsynchronous { (transaction) -> Void in
     let jane = transaction.fetchOne(
-        From(MyPersonEntity),
+        From<MyPersonEntity>(),
         Where("name", isEqualTo: "Jane Smith")
     )
     jane.friends = NSSet(array: transaction.fetchExisting(peopleIDs)!)
@@ -710,7 +708,7 @@ If you have many attributes, you don't want to keep repeating this mapping every
 CoreStore.beginAsynchronous { (transaction) -> Void in
     let json: [String: AnyObject] = // ...
     try! transaction.importObject(
-        Into(MyPersonEntity),
+        Into<MyPersonEntity>(),
         source: json
     )
     transaction.commit()
@@ -737,8 +735,8 @@ You can even use external types from popular 3rd-party JSON libraries ([SwiftyJS
 ```swift
 public protocol ImportableObject: class {
     typealias ImportSource
-    static func shouldInsertFromImportSource(source: ImportSource, inTransaction transaction: BaseDataTransaction) -> Bool
-    func didInsertFromImportSource(source: ImportSource, inTransaction transaction: BaseDataTransaction) throws
+    static func shouldInsert(from source: ImportSource, in transaction: BaseDataTransaction) -> Bool
+    func didInsert(from source: ImportSource, in transaction: BaseDataTransaction) throws
 }
 ```
 First, set `ImportSource` to the expected type of the data source:
@@ -750,15 +748,15 @@ This lets us call `importObject(_:source:)` with any `[String: AnyObject]` type
 CoreStore.beginAsynchronous { (transaction) -> Void in
     let json: [String: AnyObject] = // ...
     try! transaction.importObject(
-        Into(MyPersonEntity),
+        Into<MyPersonEntity>(),
         source: json
     )
     // ...
 }
 ```
-The actual extraction and assignment of values should be implemented in the `didInsertFromImportSource(...)` method of the `ImportableObject` protocol:
+The actual extraction and assignment of values should be implemented in the `didInsert(from:in:)` method of the `ImportableObject` protocol:
 ```swift
-func didInsertFromImportSource(source: ImportSource, inTransaction transaction: BaseDataTransaction) throws {
+func didInsert(from source: ImportSource, in transaction: BaseDataTransaction) throws {
     self.name = source["name"] as? NSString
     self.age = source["age"] as? NSNumber
     // ...
@@ -769,17 +767,17 @@ Transactions also let you import multiple objects at once using the `importObjec
 CoreStore.beginAsynchronous { (transaction) -> Void in
     let jsonArray: [[String: AnyObject]] = // ...
     try! transaction.importObjects(
-        Into(MyPersonEntity),
+        Into<MyPersonEntity>(),
         sourceArray: jsonArray
     )
     // ...
 }
 ```
-Doing so tells the transaction to iterate through the array of import sources and calls `shouldInsertFromImportSource(...)` on the `ImportableObject` to determine which instances should be created. You can do validations and return `false` from `shouldInsertFromImportSource(...)` if you want to skip importing from a source and continue on with the other sources in the array.
+Doing so tells the transaction to iterate through the array of import sources and calls `shouldInsert(from:in:)` on the `ImportableObject` to determine which instances should be created. You can do validations and return `false` from `shouldInsert(from:in:)` if you want to skip importing from a source and continue on with the other sources in the array.
 
-If on the other hand, your validation in one of the sources failed in such a manner that all other sources should also be cancelled, you can `throw` from within `didInsertFromImportSource(...)`:
+If on the other hand, your validation in one of the sources failed in such a manner that all other sources should also be cancelled, you can `throw` from within `didInsert(from:in:)`:
 ```swift
-func didInsertFromImportSource(source: ImportSource, inTransaction transaction: BaseDataTransaction) throws {
+func didInsert(from source: ImportSource, in transaction: BaseDataTransaction) throws {
     self.name = source["name"] as? NSString
     self.age = source["age"] as? NSNumber
     // ...
@@ -794,7 +792,7 @@ CoreStore.beginAsynchronous { (transaction) -> Void in
     let jsonArray: [[String: AnyObject]] = // ...
     do {
         try transaction.importObjects(
-            Into(MyPersonEntity),
+            Into<MyPersonEntity>(),
             sourceArray: jsonArray
         )
     }
@@ -817,11 +815,11 @@ public protocol ImportableUniqueObject: ImportableObject {
     static var uniqueIDKeyPath: String { get }
     var uniqueIDValue: UniqueIDType { get set }
 
-    static func shouldInsertFromImportSource(source: ImportSource, inTransaction transaction: BaseDataTransaction) -> Bool
-    static func shouldUpdateFromImportSource(source: ImportSource, inTransaction transaction: BaseDataTransaction) -> Bool
-    static func uniqueIDFromImportSource(source: ImportSource, inTransaction transaction: BaseDataTransaction) throws -> UniqueIDType?
-    func didInsertFromImportSource(source: ImportSource, inTransaction transaction: BaseDataTransaction) throws
-    func updateFromImportSource(source: ImportSource, inTransaction transaction: BaseDataTransaction) throws
+    static func shouldInsert(from source: ImportSource, inn transaction: BaseDataTransaction) -> Bool
+    static func shouldUpdate(from source: ImportSource, in transaction: BaseDataTransaction) -> Bool
+    static func uniqueID(from source: ImportSource, in transaction: BaseDataTransaction) throws -> UniqueIDType?
+    func didInsert(from source: ImportSource, in transaction: BaseDataTransaction) throws
+    func update(from source: ImportSource, in transaction: BaseDataTransaction) throws
 }
 ```
 Notice that it has the same insert methods as `ImportableObject`, with additional methods for updates and for specifying the unique ID:
@@ -833,18 +831,18 @@ var uniqueIDValue: NSNumber {
     get { return self.personID }
     set { self.personID = newValue }
 }
-class func uniqueIDFromImportSource(source: ImportSource, inTransaction transaction: BaseDataTransaction) throws -> NSNumber? {
+class func uniqueID(from source: ImportSource, in transaction: BaseDataTransaction) throws -> NSNumber? {
     return source["id"] as? NSNumber
 }
 ```
-For `ImportableUniqueObject`, the extraction and assignment of values should be implemented from the `updateFromImportSource(...)` method. The `didInsertFromImportSource(...)` by default calls `updateFromImportSource(...)`, but you can separate the implementation for inserts and updates if needed.
+For `ImportableUniqueObject`, the extraction and assignment of values should be implemented from the `update(from:in:)` method. The `didInsert(from:in:)` by default calls `update(from:in:)`, but you can separate the implementation for inserts and updates if needed.
 
 You can then create/update an object by calling a transaction's `importUniqueObject(...)` method:
 ```swift
 CoreStore.beginAsynchronous { (transaction) -> Void in
     let json: [String: AnyObject] = // ...
     try! transaction.importUniqueObject(
-        Into(MyPersonEntity),
+        Into<MyPersonEntity>(),
         source: json
     )
     // ...
@@ -856,14 +854,14 @@ or multiple objects at once with the `importUniqueObjects(...)` method:
 CoreStore.beginAsynchronous { (transaction) -> Void in
     let jsonArray: [[String: AnyObject]] = // ...
     try! transaction.importUniqueObjects(
-        Into(MyPersonEntity),
+        Into<MyPersonEntity>(),
         sourceArray: jsonArray
     )
     // ...
 }
 ```
 As with `ImportableObject`, you can control wether to skip importing an object by implementing 
-`shouldInsertFromImportSource(...)` and `shouldUpdateFromImportSource(...)`, or to cancel all objects by `throw`ing an error from the `uniqueIDFromImportSource(...)`, `didInsertFromImportSource(...)` or `updateFromImportSource(...)` methods.
+`shouldInsert(from:in:)` and `shouldUpdate(from:in:)`, or to cancel all objects by `throw`ing an error from the `uniqueID(from:in:)`, `didInsert(from:in:)` or `update(from:in:)` methods.
 
 
 ## Fetching and Querying
@@ -880,10 +878,10 @@ Before we dive in, be aware that CoreStore distinguishes between *fetching* and
 #### `From` clause
 The search conditions for fetches and queries are specified using *clauses*. All fetches and queries require a `From` clause that indicates the target entity type:
 ```swift
-let people = CoreStore.fetchAll(From(MyPersonEntity))
+let people = CoreStore.fetchAll(From<MyPersonEntity>())
 // CoreStore.fetchAll(From<MyPersonEntity>()) works as well
 ```
-`people` in the example above will be of type `[MyPersonEntity]`. The `From(MyPersonEntity)` clause indicates a fetch to all persistent stores that `MyPersonEntity` belong to.
+`people` in the example above will be of type `[MyPersonEntity]`. The `From<MyPersonEntity>()` clause indicates a fetch to all persistent stores that `MyPersonEntity` belong to.
 
 If the entity exists in multiple configurations and you need to only search from a particular configuration, indicate in the `From` clause the configuration name for the destination persistent store:
 ```swift
@@ -912,11 +910,11 @@ Each method's purpose is straightforward, but we need to understand how to set t
 The `Where` clause is CoreStore's `NSPredicate` wrapper. It specifies the search filter to use when fetching (or querying). It implements all initializers that `NSPredicate` does (except for `-predicateWithBlock:`, which Core Data does not support):
 ```swift
 var people = CoreStore.fetchAll(
-    From(MyPersonEntity),
+    From<MyPersonEntity>(),
     Where("%K > %d", "age", 30) // string format initializer
 )
 people = CoreStore.fetchAll(
-    From(MyPersonEntity),
+    From<MyPersonEntity>(),
     Where(true) // boolean initializer
 )
 ```
@@ -924,14 +922,14 @@ If you do have an existing `NSPredicate` instance already, you can pass that to
 ```swift
 let predicate = NSPredicate(...)
 var people = CoreStore.fetchAll(
-    From(MyPersonEntity),
+    From<MyPersonEntity>(),
     Where(predicate) // predicate initializer
 )
 ```
 `Where` clauses also implement the `&&`, `||`, and `!` logic operators, so you can provide logical conditions without writing too much `AND`, `OR`, and `NOT` strings:
 ```swift
 var people = CoreStore.fetchAll(
-    From(MyPersonEntity),
+    From<MyPersonEntity>(),
     Where("age > %d", 30) && Where("gender == %@", "M")
 )
 ```
@@ -942,20 +940,20 @@ If you do not provide a `Where` clause, all objects that belong to the specified
 The `OrderBy` clause is CoreStore's `NSSortDescriptor` wrapper. Use it to specify attribute keys in which to sort the fetch (or query) results with.
 ```swift
 var mostValuablePeople = CoreStore.fetchAll(
-    From(MyPersonEntity),
-    OrderBy(.Descending("rating"), .Ascending("surname"))
+    From<MyPersonEntity>(),
+    OrderBy(.descending("rating"), .ascending("surname"))
 )
 ```
-As seen above, `OrderBy` accepts a list of `SortKey` enumeration values, which can be either `.Ascending` or `.Descending`.
+As seen above, `OrderBy` accepts a list of `SortKey` enumeration values, which can be either `.ascending` or `.descending`.
 
 You can use the `+` and `+=` operator to append `OrderBy`s together. This is useful when sorting conditionally:
 ```swift
-var orderBy = OrderBy(.Descending("rating"))
+var orderBy = OrderBy(.descending("rating"))
 if sortFromYoungest {
-    orderBy += OrderBy(.Ascending("age"))
+    orderBy += OrderBy(.ascending("age"))
 }
 var mostValuablePeople = CoreStore.fetchAll(
-    From(MyPersonEntity),
+    From<MyPersonEntity>(),
     orderBy
 )
 ```
@@ -965,9 +963,9 @@ var mostValuablePeople = CoreStore.fetchAll(
 The `Tweak` clause lets you, uh, *tweak* the fetch (or query). `Tweak` exposes the `NSFetchRequest` in a closure where you can make changes to its properties:
 ```swift
 var people = CoreStore.fetchAll(
-    From(MyPersonEntity),
+    From<MyPersonEntity>(),
     Where("age > %d", 30),
-    OrderBy(.Ascending("surname")),
+    OrderBy(.ascending("surname")),
     Tweak { (fetchRequest) -> Void in
         fetchRequest.includesPendingChanges = false
         fetchRequest.returnsObjectsAsFaults = false
@@ -996,7 +994,7 @@ Setting up the `From`, `Where`, `OrderBy`, and `Tweak` clauses is similar to how
 The `Select<T>` clause specifies the target attribute/aggregate key, as well as the expected return type: 
 ```swift
 let johnsAge = CoreStore.queryValue(
-    From(MyPersonEntity),
+    From<MyPersonEntity>(),
     Select<Int>("age"),
     Where("name == %@", "John Smith")
 )
@@ -1021,29 +1019,29 @@ The example above queries the "age" property for the first object that matches t
 For `queryAttributes(...)`, only `NSDictionary` is valid for `Select`, thus you are allowed to omit the generic type:
 ```swift
 let allAges = CoreStore.queryAttributes(
-    From(MyPersonEntity),
+    From<MyPersonEntity>(),
     Select("age")
 )
 ```
 
 If you only need a value for a particular attribute, you can just specify the key name (like we did with `Select<Int>("age")`), but several aggregate functions can also be used as parameter to `Select`:
-- `.Average(...)`
-- `.Count(...)`
-- `.Maximum(...)`
-- `.Minimum(...)`
-- `.Sum(...)`
+- `.average(...)`
+- `.count(...)`
+- `.maximum(...)`
+- `.minimum(...)`
+- `.sum(...)`
 
 ```swift
 let oldestAge = CoreStore.queryValue(
-    From(MyPersonEntity),
-    Select<Int>(.Maximum("age"))
+    From<MyPersonEntity>(),
+    Select<Int>(.maximum("age"))
 )
 ```
 
 For `queryAttributes(...)` which returns an array of dictionaries, you can specify multiple attributes/aggregates to `Select`:
 ```swift
 let personJSON = CoreStore.queryAttributes(
-    From(MyPersonEntity),
+    From<MyPersonEntity>(),
     Select("name", "age")
 )
 ```
@@ -1063,8 +1061,8 @@ let personJSON = CoreStore.queryAttributes(
 You can also include an aggregate as well:
 ```swift
 let personJSON = CoreStore.queryAttributes(
-    From(MyPersonEntity),
-    Select("name", .Count("friends"))
+    From<MyPersonEntity>(),
+    Select("name", .count("friends"))
 )
 ```
 which returns:
@@ -1083,8 +1081,8 @@ which returns:
 The `"count(friends)"` key name was automatically used by CoreStore, but you can specify your own key alias if you need:
 ```swift
 let personJSON = CoreStore.queryAttributes(
-    From(MyPersonEntity),
-    Select("name", .Count("friends", As: "friendsCount"))
+    From<MyPersonEntity>(),
+    Select("name", .count("friends", as: "friendsCount"))
 )
 ```
 which now returns:
@@ -1106,8 +1104,8 @@ which now returns:
 The `GroupBy` clause lets you group results by a specified attribute/aggregate. This is useful only for `queryAttributes(...)` since `queryValue(...)` just returns the first value.
 ```swift
 let personJSON = CoreStore.queryAttributes(
-    From(MyPersonEntity),
-    Select("age", .Count("age", As: "count")),
+    From<MyPersonEntity>(),
+    Select("age", .count("age", as: "count")),
     GroupBy("age")
 )
 ```
@@ -1153,7 +1151,7 @@ A couple of examples, `ListMonitor`:
 
 <img width="369" alt="screen shot 2016-07-10 at 22 56 44" src="https://cloud.githubusercontent.com/assets/3029684/16713994/ae06e702-46f1-11e6-83a8-dee48b480bab.png" />
 
-`CoreStoreError.MappingModelNotFoundError`:
+`CoreStoreError.mappingModelNotFoundError`:
 
 <img width="506" alt="MappingModelNotFoundError" src="https://cloud.githubusercontent.com/assets/3029684/16713962/e021f548-46f0-11e6-8100-f9b5ea6b4a08.png" />
 
@@ -1232,9 +1230,9 @@ Including `ListObserver`, there are 3 observer protocols you can implement depen
 We then need to create a `ListMonitor` instance and register our `ListObserver` as an observer:
 ```swift
 self.monitor = CoreStore.monitorList(
-    From(MyPersonEntity),
+    From<MyPersonEntity>(),
     Where("age > 30"),
-    OrderBy(.Ascending("name")),
+    OrderBy(.ascending("name")),
     Tweak { (fetchRequest) -> Void in
         fetchRequest.fetchBatchSize = 20
     }
@@ -1253,10 +1251,10 @@ let firstPerson = self.monitor[0]
 If the list needs to be grouped into sections, create the `ListMonitor` instance with the `monitorSectionedList(...)` method and a `SectionBy` clause:
 ```swift
 self.monitor = CoreStore.monitorSectionedList(
-    From(MyPersonEntity),
+    From<MyPersonEntity>(),
     SectionBy("age"),
     Where("gender", isEqualTo: "M"),
-    OrderBy(.Ascending("age"), .Ascending("name")),
+    OrderBy(.ascending("age"), .ascending("name")),
     Tweak { (fetchRequest) -> Void in
         fetchRequest.fetchBatchSize = 20
     }
@@ -1267,11 +1265,11 @@ A list controller created this way will group the objects by the attribute key i
 The `SectionBy` clause can also be passed a closure to transform the section name into a displayable string:
 ```swift
 self.monitor = CoreStore.monitorSectionedList(
-    From(MyPersonEntity),
+    From<MyPersonEntity>(),
     SectionBy("age") { (sectionName) -> String? in
         "\(sectionName) years old"
     },
-    OrderBy(.Ascending("age"), .Ascending("name"))
+    OrderBy(.ascending("age"), .ascending("name"))
 )
 ```
 This is useful when implementing a `UITableViewDelegate`'s section header:
@@ -1300,7 +1298,7 @@ With 2.0, all CoreStore types are still written in pure Swift, but they now have
 <tr><th>Swift</th><th>Objective-C</th></tr>
 <tr>
 <td><pre lang=swift>
-try CoreStore.addStorageAndWait(SQLiteStore)
+try CoreStore.addStorageAndWait(SQLiteStore.self)
 </pre></td>
 <td><pre lang=objc>
 NSError *error
@@ -1313,8 +1311,8 @@ CoreStore.beginAsynchronous { (transaction) in
     // ...
     transaction.commit { (result) in
         switch result {
-        case .Success(let hasChanges): print(hasChanges)
-        case .Failure(let error): print(error)
+        case .success(let hasChanges): print(hasChanges)
+        case .failure(let error): print(error)
         }
     }
 }
@@ -1411,13 +1409,7 @@ NSArray<MYPerson *> *objects =
                               CSSortAscending(CSKeyPath(MYPerson, firstName)), nil)]];
 ```
 
-To use these syntax sugars, include *CoreStoreBridge.h* in your Objective-C source files. For projects that support iOS 7 (and thus cannot build CoreStore as a module), you will need to add 
-```
-SWIFT_OBJC_INTERFACE_HEADER_NAME=$(SWIFT_OBJC_INTERFACE_HEADER_NAME)
-```
-to your target's `GCC_PREPROCESSOR_DEFINITIONS` build setting.
-
-<img width="797" alt="GCC_PREPROCESSOR_DEFINITIONS" src="https://cloud.githubusercontent.com/assets/3029684/16714547/92497fc4-4701-11e6-81db-6b1a11743cc5.png" />
+To use these syntax sugars, include *CoreStoreBridge.h* in your Objective-C source files.
 
 
 # Roadmap
@@ -1429,14 +1421,14 @@ to your target's `GCC_PREPROCESSOR_DEFINITIONS` build setting.
 
 # Installation
 - Requires:
-    - iOS 7 SDK and above
-    - Swift 2.2 (Xcode 7.3)
+    - iOS 8 SDK and above
+    - Swift 3.0.1 (Xcode 8.2)
 - Dependencies:
-    - [GCDKit](https://github.com/JohnEstropia/GCDKit)
+    - *None*
 - Other notes:
     - The `com.apple.CoreData.ConcurrencyDebug` debug argument should be turned off for the app. CoreStore already guarantees safety for you by making the main context read-only, and by only executing transactions serially.
 
-### Install with CocoaPods (iOS 7 not supported)
+### Install with CocoaPods
 ```
 pod 'CoreStore'
 ```
@@ -1445,8 +1437,7 @@ This installs CoreStore as a framework. Declare `import CoreStore` in your swift
 ### Install with Carthage
 In your `Cartfile`, add
 ```
-github "JohnEstropia/CoreStore" >= 2.0.0
-github "JohnEstropia/GCDKit" >= 1.2.5
+github "JohnEstropia/CoreStore" >= 3.0.0
 ```
 and run 
 ```
@@ -1459,7 +1450,7 @@ git submodule add https://github.com/JohnEstropia/CoreStore.git <destination dir
 ```
 Drag and drop **CoreStore.xcodeproj** to your project.
 
-#### To install as a framework (iOS 7 not supported):
+#### To install as a framework:
 Drag and drop **CoreStore.xcodeproj** to your project.
 
 #### To include directly in your app module:
@@ -1470,16 +1461,30 @@ Add all *.swift* files to your project.
 
 To use the Objective-C syntax sugars, import *CoreStoreBridge.h* in your *.m* source files.
 
-For projects that support iOS 7 (and thus cannot build CoreStore as a module), you will need to add 
-```
-SWIFT_OBJC_INTERFACE_HEADER_NAME=$(SWIFT_OBJC_INTERFACE_HEADER_NAME)
-```
-to your target's `GCC_PREPROCESSOR_DEFINITIONS` build setting:
-
-<img width="797" alt="GCC_PREPROCESSOR_DEFINITIONS" src="https://cloud.githubusercontent.com/assets/3029684/16714547/92497fc4-4701-11e6-81db-6b1a11743cc5.png" />
-
-
 # Changesets
+### Upgrading from 2.x.x to 3.x.x
+**Obsoleted**
+- `UnsageDataTransaction.internalContext` was removed. Accessing the internal context (or more specifically, accessing context-level methods such as fetches) are now available through the `FetchableSource` and `QueryableProtocol` protocols, which are retrievable with `NSManagedObject.fetchSource()` and `NSManagedObject.querySource()` respectively. These protocols are implemented by `DataStack` and `BaseDataTransaction`.
+
+**Deprecated**
+Methods have been renamed to better fit the [Swift 3 naming conventions](https://swift.org/documentation/api-design-guidelines/).
+- `entityDescriptionForType(_:)` → `entityDescription(for:)`
+- `objectIDForURIRepresentation(_:)` → `objectID(for:)`
+- `ImportableObject` and `ImportableUniqueObject` protocol methods (and their variants) have been renamed. The old methods are still available, but will be removed in a future update.
+    - `shouldInsertFromImportSource(_:inTransaction:)` → `shouldInsert(from:in:)`
+    - `didInsertFromImportSource(_:inTransaction:)` → `didInsert(from:in:)`
+    - `shouldUpdateFromImportSource(_:inTransaction :)` → `shouldUpdate(from:in:)`
+    - `uniqueIDFromImportSource(_:inTransaction :)` → `uniqueID(from:in:)`
+    - `updateFromImportSource(_:inTransaction:)` → `update(from:in:)`
+
+**Miscellaneous**
+- APIs obsoleted from 2.0.0 have been removed.
+- CoreStore does not depend on [GCDKit](https://github.com/JohnEstropia/GCDKit) anymore, thanks to Swift 3's better Grand Central Dispatch API.
+- All enum cases are now lowercased
+- `CoreStoreError` now implements the new Swift `CustomNSError` protocol for better Objective-C 
+bridging.
+- Some methods may emit warnings for unused return values. `@discardableResult` annotations have been set to better reflect the responsibility of API users to use/inspect return values.
+
 ### Upgrading from 1.x.x to 2.x.x
 **Obsoleted**
 - `AsynchronousDataTransaction.rollback()` was removed. Undo and rollback functionality are now only allowed on `UnsafeDataTransaction`s

Sources/Convenience/NSFetchedResultsController+Convenience.swift

@@ -26,28 +26,26 @@
 import Foundation
 import CoreData
 
-
 #if os(iOS) || os(watchOS) || os(tvOS)
 
-// MARK: - NSFetchedResultsController
+// MARK: - DataStack
 
-public extension NSFetchedResultsController {
+public extension DataStack {
     
     /**
-     Utility for creating an `NSFetchedResultsController` from a `DataStack`. This is useful when an `NSFetchedResultsController` is preferred over the overhead of `ListMonitor`s abstraction.
+     Utility for creating an `NSFetchedResultsController` from the `DataStack`. This is useful when an `NSFetchedResultsController` is preferred over the overhead of `ListMonitor`s abstraction.
+     - Note: It is the caller's responsibility to call `performFetch()` on the created `NSFetchedResultsController`.
      
-     - parameter dataStack: the `DataStack` to observe objects from
      - parameter from: a `From` clause indicating the entity type
      - parameter sectionBy: a `SectionBy` clause indicating the keyPath for the attribute to use when sorting the list into sections
      - parameter fetchClauses: a series of `FetchClause` instances for fetching the object list. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
-     - returns: an `NSFetchedResultsController` that observes a `DataStack`
+     - returns: an `NSFetchedResultsController` that observes the `DataStack`
      */
     @nonobjc
-    public static func createFor<T: NSManagedObject>(dataStack: DataStack, _ from: From<T>, _ sectionBy: SectionBy, _ fetchClauses: FetchClause...) -> NSFetchedResultsController {
+    public func createFetchedResultsController<T: NSManagedObject>(_ from: From<T>, _ sectionBy: SectionBy, _ fetchClauses: FetchClause...) -> NSFetchedResultsController<T> {
         
-        return self.createFromContext(
-            dataStack.mainContext,
-            fetchRequest: CoreStoreFetchRequest(),
+        return createFRC(
+            fromContext: self.mainContext,
             from: from,
             sectionBy: sectionBy,
             fetchClauses: fetchClauses
@@ -56,19 +54,18 @@ public extension NSFetchedResultsController {
     
     /**
      Utility for creating an `NSFetchedResultsController` from a `DataStack`. This is useful when an `NSFetchedResultsController` is preferred over the overhead of `ListMonitor`s abstraction.
+     - Note: It is the caller's responsibility to call `performFetch()` on the created `NSFetchedResultsController`.
      
-     - parameter dataStack: the `DataStack` to observe objects from
      - parameter from: a `From` clause indicating the entity type
      - parameter sectionBy: a `SectionBy` clause indicating the keyPath for the attribute to use when sorting the list into sections
      - parameter fetchClauses: a series of `FetchClause` instances for fetching the object list. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
-     - returns: an `NSFetchedResultsController` that observes a `DataStack`
+     - returns: an `NSFetchedResultsController` that observes the `DataStack`
      */
     @nonobjc
-    public static func createFor<T: NSManagedObject>(dataStack: DataStack, _ from: From<T>, _ sectionBy: SectionBy, _ fetchClauses: [FetchClause]) -> NSFetchedResultsController {
+    public func createFetchedResultsController<T: NSManagedObject>(_ from: From<T>, _ sectionBy: SectionBy, _ fetchClauses: [FetchClause]) -> NSFetchedResultsController<T> {
         
-        return self.createFromContext(
-            dataStack.mainContext,
-            fetchRequest: CoreStoreFetchRequest(),
+        return createFRC(
+            fromContext: self.mainContext,
             from: from,
             sectionBy: sectionBy,
             fetchClauses: fetchClauses
@@ -76,19 +73,18 @@ public extension NSFetchedResultsController {
     }
     
     /**
-     Utility for creating an `NSFetchedResultsController` from a `DataStack`. This is useful when an `NSFetchedResultsController` is preferred over the overhead of `ListMonitor`s abstraction.
+     Utility for creating an `NSFetchedResultsController` from the `DataStack`. This is useful when an `NSFetchedResultsController` is preferred over the overhead of `ListMonitor`s abstraction.
+     - Note: It is the caller's responsibility to call `performFetch()` on the created `NSFetchedResultsController`.
      
-     - parameter dataStack: the `DataStack` to observe objects from
      - parameter from: a `From` clause indicating the entity type
      - parameter fetchClauses: a series of `FetchClause` instances for fetching the object list. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
-     - returns: an `NSFetchedResultsController` that observes a `DataStack`
+     - returns: an `NSFetchedResultsController` that observes the `DataStack`
      */
     @nonobjc
-    public static func createFor<T: NSManagedObject>(dataStack: DataStack, _ from: From<T>, _ fetchClauses: FetchClause...) -> NSFetchedResultsController {
+    public func createFetchedResultsController<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> NSFetchedResultsController<T> {
         
-        return self.createFromContext(
-            dataStack.mainContext,
-            fetchRequest: CoreStoreFetchRequest(),
+        return createFRC(
+            fromContext: self.mainContext,
             from: from,
             sectionBy: nil,
             fetchClauses: fetchClauses
@@ -96,128 +92,131 @@ public extension NSFetchedResultsController {
     }
     
     /**
-     Utility for creating an `NSFetchedResultsController` from a `DataStack`. This is useful when an `NSFetchedResultsController` is preferred over the overhead of `ListMonitor`s abstraction.
+     Utility for creating an `NSFetchedResultsController` from the `DataStack`. This is useful when an `NSFetchedResultsController` is preferred over the overhead of `ListMonitor`s abstraction.
+     - Note: It is the caller's responsibility to call `performFetch()` on the created `NSFetchedResultsController`.
      
-     - parameter dataStack: the `DataStack` to observe objects from
      - parameter from: a `From` clause indicating the entity type
      - parameter fetchClauses: a series of `FetchClause` instances for fetching the object list. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
-     - returns: an `NSFetchedResultsController` that observes a `DataStack`
+     - returns: an `NSFetchedResultsController` that observes the `DataStack`
      */
     @nonobjc
-    public static func createFor<T: NSManagedObject>(dataStack: DataStack, _ from: From<T>, _ fetchClauses: [FetchClause]) -> NSFetchedResultsController {
+    public func createFetchedResultsController<T: NSManagedObject>(forDataStack dataStack: DataStack, _ from: From<T>, _ fetchClauses: [FetchClause]) -> NSFetchedResultsController<T> {
         
-        return self.createFromContext(
-            dataStack.mainContext,
-            fetchRequest: CoreStoreFetchRequest(),
+        return createFRC(
+            fromContext: self.mainContext,
             from: from,
             sectionBy: nil,
             fetchClauses: fetchClauses
         )
     }
-    
-    /**
-     Utility for creating an `NSFetchedResultsController` from an `UnsafeDataTransaction`. This is useful when an `NSFetchedResultsController` is preferred over the overhead of `ListMonitor`s abstraction.
-     
-     - parameter transaction: the `UnsafeDataTransaction` to observe objects from
-     - parameter from: a `From` clause indicating the entity type
-     - parameter sectionBy: a `SectionBy` clause indicating the keyPath for the attribute to use when sorting the list into sections
-     - parameter fetchClauses: a series of `FetchClause` instances for fetching the object list. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
-     - returns: an `NSFetchedResultsController` that observes an `UnsafeDataTransaction`
-     */
-    @nonobjc
-    public static func createFor<T: NSManagedObject>(transaction: UnsafeDataTransaction, _ from: From<T>, _ sectionBy: SectionBy, _ fetchClauses: FetchClause...) -> NSFetchedResultsController {
-        
-        return self.createFromContext(
-            transaction.context,
-            fetchRequest: CoreStoreFetchRequest(),
-            from: from,
-            sectionBy: sectionBy,
-            fetchClauses: fetchClauses
-        )
-    }
-    
-    /**
-     Utility for creating an `NSFetchedResultsController` from an `UnsafeDataTransaction`. This is useful when an `NSFetchedResultsController` is preferred over the overhead of `ListMonitor`s abstraction.
-     
-     - parameter transaction: the `UnsafeDataTransaction` to observe objects from
-     - parameter from: a `From` clause indicating the entity type
-     - parameter sectionBy: a `SectionBy` clause indicating the keyPath for the attribute to use when sorting the list into sections
-     - parameter fetchClauses: a series of `FetchClause` instances for fetching the object list. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
-     - returns: an `NSFetchedResultsController` that observes an `UnsafeDataTransaction`
-     */
-    @nonobjc
-    public static func createFor<T: NSManagedObject>(transaction: UnsafeDataTransaction, _ from: From<T>, _ sectionBy: SectionBy, _ fetchClauses: [FetchClause]) -> NSFetchedResultsController {
-        
-        return self.createFromContext(
-            transaction.context,
-            fetchRequest: CoreStoreFetchRequest(),
-            from: from,
-            sectionBy: sectionBy,
-            fetchClauses: fetchClauses
-        )
-    }
-    
-    /**
-     Utility for creating an `NSFetchedResultsController` from an `UnsafeDataTransaction`. This is useful when an `NSFetchedResultsController` is preferred over the overhead of `ListMonitor`s abstraction.
-     
-     - parameter transaction: the `UnsafeDataTransaction` to observe objects from
-     - parameter from: a `From` clause indicating the entity type
-     - parameter fetchClauses: a series of `FetchClause` instances for fetching the object list. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
-     - returns: an `NSFetchedResultsController` that observes an `UnsafeDataTransaction`
-     */
-    @nonobjc
-    public static func createFor<T: NSManagedObject>(transaction: UnsafeDataTransaction, _ from: From<T>, _ fetchClauses: FetchClause...) -> NSFetchedResultsController {
-        
-        return self.createFromContext(
-            transaction.context,
-            fetchRequest: CoreStoreFetchRequest(),
-            from: from,
-            sectionBy: nil,
-            fetchClauses: fetchClauses
-        )
-    }
-    
-    /**
-     Utility for creating an `NSFetchedResultsController` from an `UnsafeDataTransaction`. This is useful when an `NSFetchedResultsController` is preferred over the overhead of `ListMonitor`s abstraction.
-     
-     - parameter transaction: the `UnsafeDataTransaction` to observe objects from
-     - parameter from: a `From` clause indicating the entity type
-     - parameter fetchClauses: a series of `FetchClause` instances for fetching the object list. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
-     */
-    @nonobjc
-    public static func createFor<T: NSManagedObject>(transaction: UnsafeDataTransaction, _ from: From<T>, _ fetchClauses: [FetchClause]) -> NSFetchedResultsController {
-        
-        return self.createFromContext(
-            transaction.context,
-            fetchRequest: CoreStoreFetchRequest(),
-            from: from,
-            sectionBy: nil,
-            fetchClauses: fetchClauses
-        )
-    }
-    
-    
-    // MARK: Internal
-    
-    @nonobjc
-    internal static func createFromContext<T: NSManagedObject>(context: NSManagedObjectContext, fetchRequest: NSFetchRequest, from: From<T>? = nil, sectionBy: SectionBy? = nil, fetchClauses: [FetchClause]) -> NSFetchedResultsController {
-        
-        return CoreStoreFetchedResultsController(
-            context: context,
-            fetchRequest: fetchRequest,
-            from: from,
-            sectionBy: sectionBy,
-            applyFetchClauses: { fetchRequest in
-                
-                fetchClauses.forEach { $0.applyToFetchRequest(fetchRequest) }
-                
-                CoreStore.assert(
-                    fetchRequest.sortDescriptors?.isEmpty == false,
-                    "An \(cs_typeName(NSFetchedResultsController)) requires a sort information. Specify from a \(cs_typeName(OrderBy)) clause or any custom \(cs_typeName(FetchClause)) that provides a sort descriptor."
-                )
-            }
-        )
-    }
 }
 
+
+// MARK: - UnsafeDataTransaction
+
+public extension UnsafeDataTransaction {
+    
+    /**
+     Utility for creating an `NSFetchedResultsController` from the `UnsafeDataTransaction`. This is useful when an `NSFetchedResultsController` is preferred over the overhead of `ListMonitor`s abstraction.
+     - Note: It is the caller's responsibility to call `performFetch()` on the created `NSFetchedResultsController`.
+     
+     - parameter from: a `From` clause indicating the entity type
+     - parameter sectionBy: a `SectionBy` clause indicating the keyPath for the attribute to use when sorting the list into sections
+     - parameter fetchClauses: a series of `FetchClause` instances for fetching the object list. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
+     - returns: an `NSFetchedResultsController` that observes the `UnsafeDataTransaction`
+     */
+    @nonobjc
+    public func createFetchedResultsController<T: NSManagedObject>(_ from: From<T>, _ sectionBy: SectionBy, _ fetchClauses: FetchClause...) -> NSFetchedResultsController<T> {
+        
+        return createFRC(
+            fromContext: self.context,
+            from: from,
+            sectionBy: sectionBy,
+            fetchClauses: fetchClauses
+        )
+    }
+    
+    /**
+     Utility for creating an `NSFetchedResultsController` from the `UnsafeDataTransaction`. This is useful when an `NSFetchedResultsController` is preferred over the overhead of `ListMonitor`s abstraction.
+     - Note: It is the caller's responsibility to call `performFetch()` on the created `NSFetchedResultsController`.
+     
+     - parameter from: a `From` clause indicating the entity type
+     - parameter sectionBy: a `SectionBy` clause indicating the keyPath for the attribute to use when sorting the list into sections
+     - parameter fetchClauses: a series of `FetchClause` instances for fetching the object list. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
+     - returns: an `NSFetchedResultsController` that observes the `UnsafeDataTransaction`
+     */
+    @nonobjc
+    public func createFetchedResultsController<T: NSManagedObject>(_ from: From<T>, _ sectionBy: SectionBy, _ fetchClauses: [FetchClause]) -> NSFetchedResultsController<T> {
+        
+        return createFRC(
+            fromContext: self.context,
+            from: from,
+            sectionBy: sectionBy,
+            fetchClauses: fetchClauses
+        )
+    }
+    
+    /**
+     Utility for creating an `NSFetchedResultsController` from the `UnsafeDataTransaction`. This is useful when an `NSFetchedResultsController` is preferred over the overhead of `ListMonitor`s abstraction.
+     - Note: It is the caller's responsibility to call `performFetch()` on the created `NSFetchedResultsController`.
+     
+     - parameter from: a `From` clause indicating the entity type
+     - parameter fetchClauses: a series of `FetchClause` instances for fetching the object list. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
+     - returns: an `NSFetchedResultsController` that observes the `UnsafeDataTransaction`
+     */
+    @nonobjc
+    public func createFetchedResultsController<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> NSFetchedResultsController<T> {
+        
+        return createFRC(
+            fromContext: self.context,
+            from: from,
+            sectionBy: nil,
+            fetchClauses: fetchClauses
+        )
+    }
+    
+    /**
+     Utility for creating an `NSFetchedResultsController` from the `UnsafeDataTransaction`. This is useful when an `NSFetchedResultsController` is preferred over the overhead of `ListMonitor`s abstraction.
+     - Note: It is the caller's responsibility to call `performFetch()` on the created `NSFetchedResultsController`.
+     
+     - parameter from: a `From` clause indicating the entity type
+     - parameter fetchClauses: a series of `FetchClause` instances for fetching the object list. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
+     - returns: an `NSFetchedResultsController` that observes the `UnsafeDataTransaction`
+     */
+    @nonobjc
+    public func createFetchedResultsController<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> NSFetchedResultsController<T> {
+        
+        return createFRC(
+            fromContext: self.context,
+            from: from,
+            sectionBy: nil,
+            fetchClauses: fetchClauses
+        )
+    }
+}
+
+
+
+// MARK: - Private
+
+fileprivate func createFRC<T: NSManagedObject>(fromContext context: NSManagedObjectContext, from: From<T>? = nil, sectionBy: SectionBy? = nil, fetchClauses: [FetchClause]) -> NSFetchedResultsController<T> {
+    
+    let controller = CoreStoreFetchedResultsController(
+        context: context,
+        fetchRequest: CoreStoreFetchRequest().dynamicCast(),
+        from: from,
+        sectionBy: sectionBy,
+        applyFetchClauses: { (fetchRequest) in
+            
+            fetchClauses.forEach { $0.applyToFetchRequest(fetchRequest as! NSFetchRequest<NSFetchRequestResult>) }
+            
+            CoreStore.assert(
+                fetchRequest.sortDescriptors?.isEmpty == false,
+                "An \(cs_typeName(NSFetchedResultsController<NSManagedObject>.self)) requires a sort information. Specify from a \(cs_typeName(OrderBy.self)) clause or any custom \(cs_typeName(FetchClause.self)) that provides a sort descriptor."
+            )
+        }
+    )
+    return controller.dynamicCast()
+}
+    
 #endif

Sources/Convenience/NSManagedObject+Convenience.swift

@@ -31,6 +31,52 @@ import CoreData
 
 public extension NSManagedObject {
     
+    /**
+     Exposes a `FetchableSource` that can fetch sibling objects of this `NSManagedObject` instance. This may be the `DataStack`, a `BaseDataTransaction`, the `NSManagedObjectContext` itself, or `nil` if the obejct's parent is already deallocated.
+     - Warning: Future implementations may change the instance returned by this method depending on the timing or condition that `fetchSource()` was called. Do not make assumptions that the instance will be a specific instance. If the `NSManagedObjectContext` instance is desired, use the `FetchableSource.internalContext()` method to get the correct instance. Also, do not assume that the `fetchSource()` and `querySource()` return the same instance all the time.
+     - returns: a `FetchableSource` that can fetch sibling objects of this `NSManagedObject` instance. This may be the `DataStack`, a `BaseDataTransaction`, the `NSManagedObjectContext` itself, or `nil` if the object's parent is already deallocated.
+     */
+    @nonobjc
+    public func fetchSource() -> FetchableSource? {
+        
+        guard let context = self.managedObjectContext else {
+            
+            return nil
+        }
+        if context.isTransactionContext {
+            
+            return context.parentTransaction
+        }
+        if context.isDataStackContext {
+            
+            return context.parentStack
+        }
+        return context
+    }
+    
+    /**
+     Exposes a `QueryableSource` that can query attributes and aggregate values. This may be the `DataStack`, a `BaseDataTransaction`, the `NSManagedObjectContext` itself, or `nil` if the obejct's parent is already deallocated.
+     - Warning: Future implementations may change the instance returned by this method depending on the timing or condition that `querySource()` was called. Do not make assumptions that the instance will be a specific instance. If the `NSManagedObjectContext` instance is desired, use the `QueryableSource.internalContext()` method to get the correct instance. Also, do not assume that the `fetchSource()` and `querySource()` return the same instance all the time.
+     - returns: a `QueryableSource` that can query attributes and aggregate values. This may be the `DataStack`, a `BaseDataTransaction`, the `NSManagedObjectContext` itself, or `nil` if the object's parent is already deallocated.
+     */
+    @nonobjc
+    public func querySource() -> QueryableSource? {
+        
+        guard let context = self.managedObjectContext else {
+            
+            return nil
+        }
+        if context.isTransactionContext {
+            
+            return context.parentTransaction
+        }
+        if context.isDataStackContext {
+            
+            return context.parentStack
+        }
+        return context
+    }
+    
     /**
      Provides a convenience wrapper for accessing `primitiveValueForKey(...)` with proper calls to `willAccessValueForKey(...)` and `didAccessValueForKey(...)`. This is useful when implementing accessor methods for transient attributes.
      
@@ -38,14 +84,33 @@ public extension NSManagedObject {
      - returns: the primitive value for the KVC key
      */
     @nonobjc
-    @warn_unused_result
-    public func accessValueForKVCKey(KVCKey: KeyPath) -> AnyObject? {
+    public func accessValueForKVCKey(_ KVCKey: KeyPath) -> Any? {
         
-        self.willAccessValueForKey(KVCKey)
-        let primitiveValue: AnyObject? = self.primitiveValueForKey(KVCKey)
-        self.didAccessValueForKey(KVCKey)
+        self.willAccessValue(forKey: KVCKey)
+        defer {
+            
+            self.didAccessValue(forKey: KVCKey)
+        }
+        return self.primitiveValue(forKey: KVCKey)
+    }
+    
+    /**
+     Provides a convenience wrapper for accessing `primitiveValueForKey(...)` with proper calls to `willAccessValueForKey(...)` and `didAccessValueForKey(...)`. This is useful when implementing accessor methods for transient attributes.
+     
+     - parameter KVCKey: the KVC key
+     - parameter didAccessPrimitiveValue: the closure to access the value. This is called between `willAccessValueForKey(...)` and `didAccessValueForKey(...)`
+     - returns: the primitive value for the KVC key
+     */
+    @discardableResult
+    @nonobjc
+    public func accessValueForKVCKey<T>(_ KVCKey: KeyPath, _ didAccessPrimitiveValue: (Any?) throws -> T) rethrows -> T {
         
-        return primitiveValue
+        self.willAccessValue(forKey: KVCKey)
+        defer {
+            
+            self.didAccessValue(forKey: KVCKey)
+        }
+        return try didAccessPrimitiveValue(self.primitiveValue(forKey: KVCKey))
     }
     
     /**
@@ -55,11 +120,34 @@ public extension NSManagedObject {
      - parameter KVCKey: the KVC key
      */
     @nonobjc
-    public func setValue(value: AnyObject?, forKVCKey KVCKey: KeyPath) {
+    public func setValue(_ value: Any?, forKVCKey KVCKey: KeyPath) {
         
-        self.willChangeValueForKey(KVCKey)
+        self.willChangeValue(forKey: KVCKey)
+        defer {
+            
+            self.didChangeValue(forKey: KVCKey)
+        }
         self.setPrimitiveValue(value, forKey: KVCKey)
-        self.didChangeValueForKey(KVCKey)
+    }
+    
+    /**
+     Provides a convenience wrapper for setting `setPrimitiveValue(...)` with proper calls to `willChangeValueForKey(...)` and `didChangeValueForKey(...)`. This is useful when implementing mutator methods for transient attributes.
+     
+     - parameter value: the value to set the KVC key with
+     - parameter KVCKey: the KVC key
+     - parameter didSetPrimitiveValue: the closure called between `willChangeValueForKey(...)` and `didChangeValueForKey(...)`
+     */
+    @discardableResult
+    @nonobjc
+    public func setValue<T>(_ value: Any?, forKVCKey KVCKey: KeyPath, _ didSetPrimitiveValue: (Any?) throws -> T) rethrows -> T {
+        
+        self.willChangeValue(forKey: KVCKey)
+        defer {
+            
+            self.didChangeValue(forKey: KVCKey)
+        }
+        self.setPrimitiveValue(value, forKey: KVCKey)
+        return try didSetPrimitiveValue(value)
     }
     
     /**
@@ -68,7 +156,7 @@ public extension NSManagedObject {
     @nonobjc
     public func refreshAsFault() {
         
-        self.managedObjectContext?.refreshObject(self, mergeChanges: false)
+        self.managedObjectContext?.refresh(self, mergeChanges: false)
     }
     
     /**
@@ -77,6 +165,6 @@ public extension NSManagedObject {
     @nonobjc
     public func refreshAndMerge() {
         
-        self.managedObjectContext?.refreshObject(self, mergeChanges: true)
+        self.managedObjectContext?.refresh(self, mergeChanges: true)
     }
 }

Sources/Convenience/Progress+Convenience.swift

@@ -1,5 +1,5 @@
 //
-//  NSProgress+Convenience.swift
+//  Progress+Convenience.swift
 //  CoreStore
 //
 //  Copyright © 2015 John Rommel Estropia
@@ -24,22 +24,19 @@
 //
 
 import Foundation
-#if USE_FRAMEWORKS
-    import GCDKit
-#endif
 
 
-// MARK: - NSProgress
+// MARK: - Progress
 
-public extension NSProgress {
+public extension Progress {
     
     /**
-     Sets a closure that the `NSProgress` calls whenever its `fractionCompleted` changes. You can use this instead of setting up KVO.
+     Sets a closure that the `Progress` calls whenever its `fractionCompleted` changes. You can use this instead of setting up KVO.
      
      - parameter closure: the closure to execute on progress change
      */
     @nonobjc
-    public func setProgressHandler(closure: ((progress: NSProgress) -> Void)?) {
+    public func setProgressHandler(_ closure: ((_ progress: Progress) -> Void)?) {
         
         self.progressObserver.progressHandler = closure
     }
@@ -81,8 +78,9 @@ public extension NSProgress {
 @objc
 private final class ProgressObserver: NSObject {
     
-    private unowned let progress: NSProgress
-    private var progressHandler: ((progress: NSProgress) -> Void)? {
+    private unowned let progress: Progress
+    
+    fileprivate var progressHandler: ((_ progress: Progress) -> Void)? {
         
         didSet {
             
@@ -96,19 +94,19 @@ private final class ProgressObserver: NSObject {
                 
                 self.progress.addObserver(
                     self,
-                    forKeyPath: "fractionCompleted",
-                    options: [.Initial, .New],
+                    forKeyPath: #keyPath(Progress.fractionCompleted),
+                    options: [.initial, .new],
                     context: nil
                 )
             }
             else {
                 
-                self.progress.removeObserver(self, forKeyPath: "fractionCompleted")
+                self.progress.removeObserver(self, forKeyPath: #keyPath(Progress.fractionCompleted))
             }
         }
     }
     
-    private init(_ progress: NSProgress) {
+    fileprivate init(_ progress: Progress) {
         
         self.progress = progress
         super.init()
@@ -119,20 +117,22 @@ private final class ProgressObserver: NSObject {
         if let _ = self.progressHandler {
             
             self.progressHandler = nil
-            self.progress.removeObserver(self, forKeyPath: "fractionCompleted")
+            self.progress.removeObserver(self, forKeyPath: #keyPath(Progress.fractionCompleted))
         }
     }
     
-    override func observeValueForKeyPath(keyPath: String?, ofObject object: AnyObject?, change: [String : AnyObject]?, context: UnsafeMutablePointer<Void>) {
+    override func observeValue(forKeyPath keyPath: String?, of object: Any?, change: [NSKeyValueChangeKey : Any]?, context: UnsafeMutableRawPointer?) {
         
-        guard let progress = object as? NSProgress where progress == self.progress && keyPath == "fractionCompleted" else {
-            
-            return
+        guard let progress = object as? Progress,
+            progress == self.progress,
+            keyPath == #keyPath(Progress.fractionCompleted) else {
+                
+                return
         }
         
-        GCDQueue.Main.async { [weak self] () -> Void in
+        DispatchQueue.main.async { [weak self] () -> Void in
             
-            self?.progressHandler?(progress: progress)
+            self?.progressHandler?(progress)
         }
     }
 }

Sources/CoreDataNativeType.swift

@@ -0,0 +1,77 @@
+//
+//  CoreDataNativeType.swift
+//  CoreStore
+//
+//  Copyright © 2017 John Rommel Estropia
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all
+//  copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+//  SOFTWARE.
+//
+
+import Foundation
+import CoreData
+
+
+// MARK: - CoreDataNativeType
+
+@objc public protocol CoreDataNativeType: class, NSObjectProtocol, AnyObject {}
+
+
+// MARK: - NSNumber
+
+extension NSNumber: CoreDataNativeType {}
+
+
+// MARK: - NSString
+
+extension NSString: CoreDataNativeType {}
+
+
+// MARK: - NSDate
+
+extension NSDate: CoreDataNativeType {}
+
+
+// MARK: - NSData
+
+extension NSData: CoreDataNativeType {}
+
+
+// MARK: - NSSet
+
+extension NSSet: CoreDataNativeType {}
+
+
+// MARK: - NSOrderedSet
+
+extension NSOrderedSet: CoreDataNativeType {}
+
+
+// MARK: - NSManagedObject
+
+extension NSManagedObject: CoreDataNativeType {}
+
+
+// MARK: - NSManagedObjectID
+
+extension NSManagedObjectID: CoreDataNativeType {}
+
+
+// MARK: - NSNull
+
+extension NSNull: CoreDataNativeType {}

Sources/CoreStore.swift

@@ -24,9 +24,6 @@
 //
 
 import CoreData
-#if USE_FRAMEWORKS
-    import GCDKit
-#endif
 
 
 // MARK: - CoreStore
@@ -45,10 +42,10 @@ public enum CoreStore {
         
         get {
         
-            self.defaultStackBarrierQueue.barrierSync {
-        
+            self.defaultStackBarrierQueue.sync(flags: .barrier) {
+                
                 if self.defaultStackInstance == nil {
-        
+                    
                     self.defaultStackInstance = DataStack()
                 }
             }
@@ -56,7 +53,7 @@ public enum CoreStore {
         }
         set {
             
-            self.defaultStackBarrierQueue.barrierAsync {
+            self.defaultStackBarrierQueue.async(flags: .barrier) {
                 
                 self.defaultStackInstance = newValue
             }
@@ -66,7 +63,7 @@ public enum CoreStore {
     
     // MARK: Private
     
-    private static let defaultStackBarrierQueue = GCDQueue.createConcurrent("com.coreStore.defaultStackBarrierQueue")
+    private static let defaultStackBarrierQueue = DispatchQueue.concurrent("com.coreStore.defaultStackBarrierQueue")
     
     private static var defaultStackInstance: DataStack?
 }

Sources/CoreStoreError.swift

@@ -32,59 +32,117 @@ import CoreData
 /**
  All errors thrown from CoreStore are expressed in `CoreStoreError` enum values.
  */
-public enum CoreStoreError: ErrorType, Hashable {
+public enum CoreStoreError: Error, CustomNSError, Hashable {
     
     /**
      A failure occured because of an unknown error.
      */
-    case Unknown
+    case unknown
     
     /**
      The `NSPersistentStore` could not be initialized because another store existed at the specified `NSURL`.
      */
-    case DifferentStorageExistsAtURL(existingPersistentStoreURL: NSURL)
+    case differentStorageExistsAtURL(existingPersistentStoreURL: URL)
     
     /**
      An `NSMappingModel` could not be found for a specific source and destination model versions.
      */
-    case MappingModelNotFound(localStoreURL: NSURL, targetModel: NSManagedObjectModel, targetModelVersion: String)
+    case mappingModelNotFound(localStoreURL: URL, targetModel: NSManagedObjectModel, targetModelVersion: String)
     
     /**
      Progressive migrations are disabled for a store, but an `NSMappingModel` could not be found for a specific source and destination model versions.
      */
-    case ProgressiveMigrationRequired(localStoreURL: NSURL)
+    case progressiveMigrationRequired(localStoreURL: URL)
     
     /**
      An internal SDK call failed with the specified `NSError`.
      */
-    case InternalError(NSError: NSError)
+    case internalError(NSError: NSError)
     
     
-    // MARK: ErrorType
+    // MARK: CustomNSError
     
-    public var _domain: String {
+    public static var errorDomain: String {
         
         return CoreStoreErrorDomain
     }
     
-    public var _code: Int {
+    public var errorCode: Int {
     
         switch self {
             
-        case .Unknown:
-            return CoreStoreErrorCode.UnknownError.rawValue
+        case .unknown:
+            return CoreStoreErrorCode.unknownError.rawValue
             
-        case .DifferentStorageExistsAtURL:
-            return CoreStoreErrorCode.DifferentPersistentStoreExistsAtURL.rawValue
+        case .differentStorageExistsAtURL:
+            return CoreStoreErrorCode.differentStorageExistsAtURL.rawValue
             
-        case .MappingModelNotFound:
-            return CoreStoreErrorCode.MappingModelNotFound.rawValue
+        case .mappingModelNotFound:
+            return CoreStoreErrorCode.mappingModelNotFound.rawValue
             
-        case .ProgressiveMigrationRequired:
-            return CoreStoreErrorCode.ProgressiveMigrationRequired.rawValue
+        case .progressiveMigrationRequired:
+            return CoreStoreErrorCode.progressiveMigrationRequired.rawValue
             
-        case .InternalError:
-            return CoreStoreErrorCode.InternalError.rawValue
+        case .internalError:
+            return CoreStoreErrorCode.internalError.rawValue
+        }
+    }
+    
+    public var errorUserInfo: [String : Any] {
+        
+        switch self {
+            
+        case .unknown:
+            return [:]
+            
+        case .differentStorageExistsAtURL(let existingPersistentStoreURL):
+            return [
+                "existingPersistentStoreURL": existingPersistentStoreURL
+            ]
+            
+        case .mappingModelNotFound(let localStoreURL, let targetModel, let targetModelVersion):
+            return [
+                "localStoreURL": localStoreURL,
+                "targetModel": targetModel,
+                "targetModelVersion": targetModelVersion
+            ]
+            
+        case .progressiveMigrationRequired(let localStoreURL):
+            return [
+                "localStoreURL": localStoreURL
+            ]
+            
+        case .internalError(let NSError):
+            return [
+                "NSError": NSError
+            ]
+        }
+    }
+    
+    
+    // MARK: Equatable
+    
+    public static func == (lhs: CoreStoreError, rhs: CoreStoreError) -> Bool {
+        
+        switch (lhs, rhs) {
+            
+        case (.unknown, .unknown):
+            return true
+            
+        case (.differentStorageExistsAtURL(let url1), .differentStorageExistsAtURL(let url2)):
+            return url1 == url2
+            
+        case (.mappingModelNotFound(let url1, let model1, let version1), .mappingModelNotFound(let url2, let model2, let version2)):
+            return url1 == url2 && model1 == model2 && version1 == version2
+            
+        case (.progressiveMigrationRequired(let url1), .progressiveMigrationRequired(let url2)):
+            return url1 == url2
+            
+        case (.internalError(let NSError1), .internalError(let NSError2)):
+            return NSError1 == NSError2
+            
+        default:
+            return false
         }
     }
     
@@ -96,19 +154,19 @@ public enum CoreStoreError: ErrorType, Hashable {
         let code = self._code
         switch self {
             
-        case .Unknown:
+        case .unknown:
             return code.hashValue
             
-        case .DifferentStorageExistsAtURL(let existingPersistentStoreURL):
+        case .differentStorageExistsAtURL(let existingPersistentStoreURL):
             return code.hashValue ^ existingPersistentStoreURL.hashValue
             
-        case .MappingModelNotFound(let localStoreURL, let targetModel, let targetModelVersion):
+        case .mappingModelNotFound(let localStoreURL, let targetModel, let targetModelVersion):
             return code.hashValue ^ localStoreURL.hashValue ^ targetModel.hashValue ^ targetModelVersion.hashValue
             
-        case .ProgressiveMigrationRequired(let localStoreURL):
+        case .progressiveMigrationRequired(let localStoreURL):
             return code.hashValue ^ localStoreURL.hashValue
             
-        case .InternalError(let NSError):
+        case .internalError(let NSError):
             return code.hashValue ^ NSError.hashValue
         }
     }
@@ -116,37 +174,9 @@ public enum CoreStoreError: ErrorType, Hashable {
     
     // MARK: Internal
     
-    internal init(_ error: ErrorType?) {
+    internal init(_ error: Error?) {
         
-        self = error.flatMap { $0.bridgeToSwift } ?? .Unknown
-    }
-}
-
-
-// MARK: - CoreStoreError: Equatable
-
-@warn_unused_result
-public func == (lhs: CoreStoreError, rhs: CoreStoreError) -> Bool {
-    
-    switch (lhs, rhs) {
-        
-    case (.Unknown, .Unknown):
-        return true
-        
-    case (.DifferentStorageExistsAtURL(let url1), .DifferentStorageExistsAtURL(let url2)):
-        return url1 == url2
-        
-    case (.MappingModelNotFound(let url1, let model1, let version1), .MappingModelNotFound(let url2, let model2, let version2)):
-        return url1 == url2 && model1 == model2 && version1 == version2
-        
-    case (.ProgressiveMigrationRequired(let url1), .ProgressiveMigrationRequired(let url2)):
-        return url1 == url2
-        
-    case (.InternalError(let NSError1), .InternalError(let NSError2)):
-        return NSError1 == NSError2
-        
-    default:
-        return false
+        self = error.flatMap { $0.bridgeToSwift } ?? .unknown
     }
 }
 
@@ -170,27 +200,27 @@ public enum CoreStoreErrorCode: Int {
     /**
      A failure occured because of an unknown error.
      */
-    case UnknownError
+    case unknownError
     
     /**
      The `NSPersistentStore` could note be initialized because another store existed at the specified `NSURL`.
      */
-    case DifferentPersistentStoreExistsAtURL
+    case differentStorageExistsAtURL
     
     /**
      An `NSMappingModel` could not be found for a specific source and destination model versions.
      */
-    case MappingModelNotFound
+    case mappingModelNotFound
     
     /**
      Progressive migrations are disabled for a store, but an `NSMappingModel` could not be found for a specific source and destination model versions.
      */
-    case ProgressiveMigrationRequired
+    case progressiveMigrationRequired
     
     /**
      An internal SDK call failed with the specified "NSError" userInfo key.
      */
-    case InternalError
+    case internalError
 }
 
 
@@ -208,20 +238,4 @@ public extension NSError {
             || code == NSMigrationError)
             && self.domain == NSCocoaErrorDomain
     }
-    
-    
-    // MARK: Deprecated
-
-    /**
-     Deprecated. Use `CoreStoreError` enum values instead.
-     
-     If the error's domain is equal to `CoreStoreErrorDomain`, returns the associated `CoreStoreErrorCode`. For other domains, returns `nil`.
-     */
-    @available(*, deprecated=2.0.0, message="Use CoreStoreError enum values instead.")
-    public var coreStoreErrorCode: CoreStoreErrorCode? {
-        
-        return (self.domain == CoreStoreErrorDomain
-            ? CoreStoreErrorCode(rawValue: self.code)
-            : nil)
-    }
 }

Sources/Fetching and Querying/BaseDataTransaction+Querying.swift

@@ -29,7 +29,46 @@ import CoreData
 
 // MARK: - DataTransaction
 
-public extension BaseDataTransaction {
+extension BaseDataTransaction: FetchableSource, QueryableSource {
+    
+    /**
+     Deletes all `NSManagedObject`s that satisfy the specified `DeleteClause`s. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
+     
+     - parameter from: a `From` clause indicating the entity type
+     - parameter deleteClauses: a series of `DeleteClause` instances for the delete request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
+     - returns: the number of `NSManagedObject`s deleted
+     */
+    @discardableResult
+    public func deleteAll<T: NSManagedObject>(_ from: From<T>, _ deleteClauses: DeleteClause...) -> Int? {
+        
+        CoreStore.assert(
+            self.isRunningInAllowedQueue(),
+            "Attempted to delete from a \(cs_typeName(self)) outside its designated queue."
+        )
+        
+        return self.context.deleteAll(from, deleteClauses)
+    }
+    
+    /**
+     Deletes all `NSManagedObject`s that satisfy the specified `DeleteClause`s. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
+     
+     - parameter from: a `From` clause indicating the entity type
+     - parameter deleteClauses: a series of `DeleteClause` instances for the delete request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
+     - returns: the number of `NSManagedObject`s deleted
+     */
+    @discardableResult
+    public func deleteAll<T: NSManagedObject>(_ from: From<T>, _ deleteClauses: [DeleteClause]) -> Int? {
+        
+        CoreStore.assert(
+            self.isRunningInAllowedQueue(),
+            "Attempted to delete from a \(cs_typeName(self)) outside its designated queue."
+        )
+        
+        return self.context.deleteAll(from, deleteClauses)
+    }
+    
+    
+    // MARK: FetchableSource
     
     /**
      Fetches the `NSManagedObject` instance in the transaction's context from a reference created from a transaction or from a different managed object context.
@@ -37,17 +76,9 @@ public extension BaseDataTransaction {
      - parameter object: a reference to the object created/fetched outside the transaction
      - returns: the `NSManagedObject` instance if the object exists in the transaction, or `nil` if not found.
      */
-    @warn_unused_result
-    public func fetchExisting<T: NSManagedObject>(object: T) -> T? {
+    public func fetchExisting<T: NSManagedObject>(_ object: T) -> T? {
         
-        do {
-            
-            return (try self.context.existingObjectWithID(object.objectID) as! T)
-        }
-        catch _ {
-            
-            return nil
-        }
+        return self.context.fetchExisting(object)
     }
     
     /**
@@ -56,17 +87,9 @@ public extension BaseDataTransaction {
      - parameter objectID: the `NSManagedObjectID` for the object
      - returns: the `NSManagedObject` instance if the object exists in the transaction, or `nil` if not found.
      */
-    @warn_unused_result
-    public func fetchExisting<T: NSManagedObject>(objectID: NSManagedObjectID) -> T? {
+    public func fetchExisting<T: NSManagedObject>(_ objectID: NSManagedObjectID) -> T? {
         
-        do {
-            
-            return (try self.context.existingObjectWithID(objectID) as! T)
-        }
-        catch _ {
-            
-            return nil
-        }
+        return self.context.fetchExisting(objectID)
     }
     
     /**
@@ -75,10 +98,9 @@ public extension BaseDataTransaction {
      - parameter objects: an array of `NSManagedObject`s created/fetched outside the transaction
      - returns: the `NSManagedObject` array for objects that exists in the transaction
      */
-    @warn_unused_result
-    public func fetchExisting<T: NSManagedObject, S: SequenceType where S.Generator.Element == T>(objects: S) -> [T] {
+    public func fetchExisting<T: NSManagedObject, S: Sequence>(_ objects: S) -> [T] where S.Iterator.Element == T {
         
-        return objects.flatMap { (try? self.context.existingObjectWithID($0.objectID)) as? T }
+        return self.context.fetchExisting(objects)
     }
     
     /**
@@ -87,10 +109,9 @@ public extension BaseDataTransaction {
      - parameter objectIDs: the `NSManagedObjectID` array for the objects
      - returns: the `NSManagedObject` array for objects that exists in the transaction
      */
-    @warn_unused_result
-    public func fetchExisting<T: NSManagedObject, S: SequenceType where S.Generator.Element == NSManagedObjectID>(objectIDs: S) -> [T] {
+    public func fetchExisting<T: NSManagedObject, S: Sequence>(_ objectIDs: S) -> [T] where S.Iterator.Element == NSManagedObjectID {
         
-        return objectIDs.flatMap { (try? self.context.existingObjectWithID($0)) as? T }
+        return self.context.fetchExisting(objectIDs)
     }
     
     /**
@@ -100,10 +121,13 @@ public extension BaseDataTransaction {
      - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
      - returns: the first `NSManagedObject` instance that satisfies the specified `FetchClause`s
      */
-    @warn_unused_result
-    public func fetchOne<T: NSManagedObject>(from: From<T>, _ fetchClauses: FetchClause...) -> T? {
+    public func fetchOne<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> T? {
         
-        return self.fetchOne(from, fetchClauses)
+        CoreStore.assert(
+            self.isRunningInAllowedQueue(),
+            "Attempted to fetch from a \(cs_typeName(self)) outside its designated queue."
+        )
+        return self.context.fetchOne(from, fetchClauses)
     }
     
     /**
@@ -113,8 +137,7 @@ public extension BaseDataTransaction {
      - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
      - returns: the first `NSManagedObject` instance that satisfies the specified `FetchClause`s
      */
-    @warn_unused_result
-    public func fetchOne<T: NSManagedObject>(from: From<T>, _ fetchClauses: [FetchClause]) -> T? {
+    public func fetchOne<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> T? {
         
         CoreStore.assert(
             self.isRunningInAllowedQueue(),
@@ -130,10 +153,13 @@ public extension BaseDataTransaction {
      - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
      - returns: all `NSManagedObject` instances that satisfy the specified `FetchClause`s
      */
-    @warn_unused_result
-    public func fetchAll<T: NSManagedObject>(from: From<T>, _ fetchClauses: FetchClause...) -> [T]? {
+    public func fetchAll<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> [T]? {
         
-        return self.fetchAll(from, fetchClauses)
+        CoreStore.assert(
+            self.isRunningInAllowedQueue(),
+            "Attempted to fetch from a \(cs_typeName(self)) outside its designated queue."
+        )
+        return self.context.fetchAll(from, fetchClauses)
     }
     
     /**
@@ -143,8 +169,7 @@ public extension BaseDataTransaction {
      - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
      - returns: all `NSManagedObject` instances that satisfy the specified `FetchClause`s
      */
-    @warn_unused_result
-    public func fetchAll<T: NSManagedObject>(from: From<T>, _ fetchClauses: [FetchClause]) -> [T]? {
+    public func fetchAll<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> [T]? {
         
         CoreStore.assert(
             self.isRunningInAllowedQueue(),
@@ -160,10 +185,13 @@ public extension BaseDataTransaction {
      - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
      - returns: the number `NSManagedObject`s that satisfy the specified `FetchClause`s
      */
-    @warn_unused_result
-    public func fetchCount<T: NSManagedObject>(from: From<T>, _ fetchClauses: FetchClause...) -> Int? {
+    public func fetchCount<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> Int? {
         
-        return self.fetchCount(from, fetchClauses)
+        CoreStore.assert(
+            self.isRunningInAllowedQueue(),
+            "Attempted to fetch from a \(cs_typeName(self)) outside its designated queue."
+        )
+        return self.context.fetchCount(from, fetchClauses)
     }
     
     /**
@@ -173,14 +201,12 @@ public extension BaseDataTransaction {
      - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
      - returns: the number `NSManagedObject`s that satisfy the specified `FetchClause`s
      */
-    @warn_unused_result
-    public func fetchCount<T: NSManagedObject>(from: From<T>, _ fetchClauses: [FetchClause]) -> Int? {
+    public func fetchCount<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> Int? {
         
         CoreStore.assert(
             self.isRunningInAllowedQueue(),
             "Attempted to fetch from a \(cs_typeName(self)) outside its designated queue."
         )
-        
         return self.context.fetchCount(from, fetchClauses)
     }
     
@@ -191,10 +217,13 @@ public extension BaseDataTransaction {
      - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
      - returns: the `NSManagedObjectID` for the first `NSManagedObject` that satisfies the specified `FetchClause`s
      */
-    @warn_unused_result
-    public func fetchObjectID<T: NSManagedObject>(from: From<T>, _ fetchClauses: FetchClause...) -> NSManagedObjectID? {
+    public func fetchObjectID<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> NSManagedObjectID? {
         
-        return self.fetchObjectID(from, fetchClauses)
+        CoreStore.assert(
+            self.isRunningInAllowedQueue(),
+            "Attempted to fetch from a \(cs_typeName(self)) outside its designated queue."
+        )
+        return self.context.fetchObjectID(from, fetchClauses)
     }
     
     /**
@@ -204,8 +233,7 @@ public extension BaseDataTransaction {
      - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
      - returns: the `NSManagedObjectID` for the first `NSManagedObject` that satisfies the specified `FetchClause`s
      */
-    @warn_unused_result
-    public func fetchObjectID<T: NSManagedObject>(from: From<T>, _ fetchClauses: [FetchClause]) -> NSManagedObjectID? {
+    public func fetchObjectID<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> NSManagedObjectID? {
         
         CoreStore.assert(
             self.isRunningInAllowedQueue(),
@@ -221,21 +249,7 @@ public extension BaseDataTransaction {
      - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
      - returns: the `NSManagedObjectID` for all `NSManagedObject`s that satisfy the specified `FetchClause`s
      */
-    @warn_unused_result
-    public func fetchObjectIDs<T: NSManagedObject>(from: From<T>, _ fetchClauses: FetchClause...) -> [NSManagedObjectID]? {
-        
-        return self.fetchObjectIDs(from, fetchClauses)
-    }
-    
-    /**
-     Fetches the `NSManagedObjectID` for all `NSManagedObject`s that satisfy the specified `FetchClause`s. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
-     
-     - parameter from: a `From` clause indicating the entity type
-     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
-     - returns: the `NSManagedObjectID` for all `NSManagedObject`s that satisfy the specified `FetchClause`s
-     */
-    @warn_unused_result
-    public func fetchObjectIDs<T: NSManagedObject>(from: From<T>, _ fetchClauses: [FetchClause]) -> [NSManagedObjectID]? {
+    public func fetchObjectIDs<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> [NSManagedObjectID]? {
         
         CoreStore.assert(
             self.isRunningInAllowedQueue(),
@@ -245,38 +259,23 @@ public extension BaseDataTransaction {
     }
     
     /**
-     Deletes all `NSManagedObject`s that satisfy the specified `DeleteClause`s. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
+     Fetches the `NSManagedObjectID` for all `NSManagedObject`s that satisfy the specified `FetchClause`s. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
      
      - parameter from: a `From` clause indicating the entity type
-     - parameter deleteClauses: a series of `DeleteClause` instances for the delete request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
-     - returns: the number of `NSManagedObject`s deleted
+     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
+     - returns: the `NSManagedObjectID` for all `NSManagedObject`s that satisfy the specified `FetchClause`s
      */
-    public func deleteAll<T: NSManagedObject>(from: From<T>, _ deleteClauses: DeleteClause...) -> Int? {
+    public func fetchObjectIDs<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> [NSManagedObjectID]? {
         
         CoreStore.assert(
             self.isRunningInAllowedQueue(),
-            "Attempted to delete from a \(cs_typeName(self)) outside its designated queue."
+            "Attempted to fetch from a \(cs_typeName(self)) outside its designated queue."
         )
-        
-        return self.context.deleteAll(from, deleteClauses)
+        return self.context.fetchObjectIDs(from, fetchClauses)
     }
     
-    /**
-     Deletes all `NSManagedObject`s that satisfy the specified `DeleteClause`s. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
-     
-     - parameter from: a `From` clause indicating the entity type
-     - parameter deleteClauses: a series of `DeleteClause` instances for the delete request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
-     - returns: the number of `NSManagedObject`s deleted
-     */
-    public func deleteAll<T: NSManagedObject>(from: From<T>, _ deleteClauses: [DeleteClause]) -> Int? {
-        
-        CoreStore.assert(
-            self.isRunningInAllowedQueue(),
-            "Attempted to delete from a \(cs_typeName(self)) outside its designated queue."
-        )
-        
-        return self.context.deleteAll(from, deleteClauses)
-    }
+    
+    // MARK: QueryableSource
     
     /**
      Queries aggregate values as specified by the `QueryClause`s. Requires at least a `Select` clause, and optional `Where`, `OrderBy`, `GroupBy`, and `Tweak` clauses.
@@ -288,14 +287,12 @@ public extension BaseDataTransaction {
      - parameter queryClauses: a series of `QueryClause` instances for the query request. Accepts `Where`, `OrderBy`, `GroupBy`, and `Tweak` clauses.
      - returns: the result of the the query. The type of the return value is specified by the generic type of the `Select<U>` parameter.
      */
-    @warn_unused_result
-    public func queryValue<T: NSManagedObject, U: SelectValueResultType>(from: From<T>, _ selectClause: Select<U>, _ queryClauses: QueryClause...) -> U? {
+    public func queryValue<T: NSManagedObject, U: SelectValueResultType>(_ from: From<T>, _ selectClause: Select<U>, _ queryClauses: QueryClause...) -> U? {
         
         CoreStore.assert(
             self.isRunningInAllowedQueue(),
             "Attempted to query from a \(cs_typeName(self)) outside its designated queue."
         )
-        
         return self.context.queryValue(from, selectClause, queryClauses)
     }
     
@@ -309,14 +306,12 @@ public extension BaseDataTransaction {
      - parameter queryClauses: a series of `QueryClause` instances for the query request. Accepts `Where`, `OrderBy`, `GroupBy`, and `Tweak` clauses.
      - returns: the result of the the query. The type of the return value is specified by the generic type of the `Select<U>` parameter.
      */
-    @warn_unused_result
-    public func queryValue<T: NSManagedObject, U: SelectValueResultType>(from: From<T>, _ selectClause: Select<U>, _ queryClauses: [QueryClause]) -> U? {
+    public func queryValue<T: NSManagedObject, U: SelectValueResultType>(_ from: From<T>, _ selectClause: Select<U>, _ queryClauses: [QueryClause]) -> U? {
         
         CoreStore.assert(
             self.isRunningInAllowedQueue(),
             "Attempted to query from a \(cs_typeName(self)) outside its designated queue."
         )
-        
         return self.context.queryValue(from, selectClause, queryClauses)
     }
     
@@ -330,14 +325,12 @@ public extension BaseDataTransaction {
      - parameter queryClauses: a series of `QueryClause` instances for the query request. Accepts `Where`, `OrderBy`, `GroupBy`, and `Tweak` clauses.
      - returns: the result of the the query. The type of the return value is specified by the generic type of the `Select<U>` parameter.
      */
-    @warn_unused_result
-    public func queryAttributes<T: NSManagedObject>(from: From<T>, _ selectClause: Select<NSDictionary>, _ queryClauses: QueryClause...) -> [[NSString: AnyObject]]? {
+    public func queryAttributes<T: NSManagedObject>(_ from: From<T>, _ selectClause: Select<NSDictionary>, _ queryClauses: QueryClause...) -> [[String: Any]]? {
         
         CoreStore.assert(
             self.isRunningInAllowedQueue(),
             "Attempted to query from a \(cs_typeName(self)) outside its designated queue."
         )
-        
         return self.context.queryAttributes(from, selectClause, queryClauses)
     }
     
@@ -351,14 +344,23 @@ public extension BaseDataTransaction {
      - parameter queryClauses: a series of `QueryClause` instances for the query request. Accepts `Where`, `OrderBy`, `GroupBy`, and `Tweak` clauses.
      - returns: the result of the the query. The type of the return value is specified by the generic type of the `Select<U>` parameter.
      */
-    @warn_unused_result
-    public func queryAttributes<T: NSManagedObject>(from: From<T>, _ selectClause: Select<NSDictionary>, _ queryClauses: [QueryClause]) -> [[NSString: AnyObject]]? {
+    public func queryAttributes<T: NSManagedObject>(_ from: From<T>, _ selectClause: Select<NSDictionary>, _ queryClauses: [QueryClause]) -> [[String: Any]]? {
         
         CoreStore.assert(
             self.isRunningInAllowedQueue(),
             "Attempted to query from a \(cs_typeName(self)) outside its designated queue."
         )
-        
         return self.context.queryAttributes(from, selectClause, queryClauses)
     }
+    
+    
+    // MARK: FetchableSource, QueryableSource
+    
+    /**
+     The internal `NSManagedObjectContext` managed by this instance. Using this context directly should typically be avoided, and is provided by CoreStore only for extremely specialized cases.
+     */
+    public func internalContext() -> NSManagedObjectContext {
+        
+        return self.context
+    }
 }

Sources/Fetching and Querying/Concrete Clauses/From.swift

@@ -32,7 +32,7 @@ import CoreData
 /**
  A `From` clause specifies the source entity and source persistent store for fetch and query methods. A common usage is to just indicate the entity:
  ```
- let person = transaction.fetchOne(From(MyPersonEntity))
+ let person = transaction.fetchOne(From<MyPersonEntity>())
  ```
  For cases where multiple `NSPersistentStore`s contain the same entity, the source configuration's name needs to be specified as well:
  ```
@@ -58,7 +58,7 @@ public struct From<T: NSManagedObject> {
      let people = transaction.fetchAll(From<MyPersonEntity>())
      ```
      */
-    public init(){
+    public init() {
         
         self.init(entityClass: T.self, configurations: nil)
     }
@@ -68,7 +68,6 @@ public struct From<T: NSManagedObject> {
      ```
      let people = transaction.fetchAll(From<MyPersonEntity>())
      ```
-     
      - parameter entity: the associated `NSManagedObject` type
      */
     public init(_ entity: T.Type) {
@@ -81,14 +80,13 @@ public struct From<T: NSManagedObject> {
      ```
      let people = transaction.fetchAll(From<MyPersonEntity>())
      ```
-     
      - parameter entityClass: the associated `NSManagedObject` entity class
      */
     public init(_ entityClass: AnyClass) {
         
         CoreStore.assert(
             entityClass is T.Type,
-            "Attempted to create generic type \(cs_typeName(From<T>)) with entity class \(cs_typeName(entityClass))"
+            "Attempted to create generic type \(cs_typeName(From<T>.self)) with entity class \(cs_typeName(entityClass))"
         )
         self.init(entityClass: entityClass, configurations: nil)
     }
@@ -98,7 +96,6 @@ public struct From<T: NSManagedObject> {
      ```
      let people = transaction.fetchAll(From<MyPersonEntity>(nil, "Configuration1"))
      ```
-     
      - parameter configuration: the `NSPersistentStore` configuration name to associate objects from. This parameter is required if multiple configurations contain the created `NSManagedObject`'s entity type. Set to `nil` to use the default configuration.
      - parameter otherConfigurations: an optional list of other configuration names to associate objects from (see `configuration` parameter)
      */
@@ -112,7 +109,6 @@ public struct From<T: NSManagedObject> {
      ```
      let people = transaction.fetchAll(From<MyPersonEntity>(["Configuration1", "Configuration2"]))
      ```
-     
      - parameter configurations: a list of `NSPersistentStore` configuration names to associate objects from. This parameter is required if multiple configurations contain the created `NSManagedObject`'s entity type. Set to `nil` to use the default configuration.
      */
     public init(_ configurations: [String?]) {
@@ -125,7 +121,6 @@ public struct From<T: NSManagedObject> {
      ```
      let people = transaction.fetchAll(From(MyPersonEntity.self, nil, "Configuration1"))
      ```
-     
      - parameter entity: the associated `NSManagedObject` type
      - parameter configuration: the `NSPersistentStore` configuration name to associate objects from. This parameter is required if multiple configurations contain the created `NSManagedObject`'s entity type. Set to `nil` to use the default configuration.
      - parameter otherConfigurations: an optional list of other configuration names to associate objects from (see `configuration` parameter)
@@ -140,7 +135,6 @@ public struct From<T: NSManagedObject> {
      ```
      let people = transaction.fetchAll(From(MyPersonEntity.self, ["Configuration1", "Configuration1"]))
      ```
-     
      - parameter entity: the associated `NSManagedObject` type
      - parameter configurations: a list of `NSPersistentStore` configuration names to associate objects from. This parameter is required if multiple configurations contain the created `NSManagedObject`'s entity type. Set to `nil` to use the default configuration.
      */
@@ -154,7 +148,6 @@ public struct From<T: NSManagedObject> {
      ```
      let people = transaction.fetchAll(From(MyPersonEntity.self, nil, "Configuration1"))
      ```
-     
      - parameter entity: the associated `NSManagedObject` entity class
      - parameter configuration: the `NSPersistentStore` configuration name to associate objects from. This parameter is required if multiple configurations contain the created `NSManagedObject`'s entity type. Set to `nil` to use the default configuration.
      - parameter otherConfigurations: an optional list of other configuration names to associate objects from (see `configuration` parameter)
@@ -163,7 +156,7 @@ public struct From<T: NSManagedObject> {
         
         CoreStore.assert(
             entityClass is T.Type,
-            "Attempted to create generic type \(cs_typeName(From<T>)) with entity class \(cs_typeName(entityClass))"
+            "Attempted to create generic type \(cs_typeName(From<T>.self)) with entity class \(cs_typeName(entityClass))"
         )
         self.init(entityClass: entityClass, configurations: [configuration] + otherConfigurations)
     }
@@ -173,7 +166,6 @@ public struct From<T: NSManagedObject> {
      ```
      let people = transaction.fetchAll(From(MyPersonEntity.self, ["Configuration1", "Configuration1"]))
      ```
-     
      - parameter entity: the associated `NSManagedObject` entity class
      - parameter configurations: a list of `NSPersistentStore` configuration names to associate objects from. This parameter is required if multiple configurations contain the created `NSManagedObject`'s entity type. Set to `nil` to use the default configuration.
      */
@@ -181,7 +173,7 @@ public struct From<T: NSManagedObject> {
         
         CoreStore.assert(
             entityClass is T.Type,
-            "Attempted to create generic type \(cs_typeName(From<T>)) with entity class \(cs_typeName(entityClass))"
+            "Attempted to create generic type \(cs_typeName(From<T>.self)) with entity class \(cs_typeName(entityClass))"
         )
         self.init(entityClass: entityClass, configurations: configurations)
     }
@@ -189,8 +181,7 @@ public struct From<T: NSManagedObject> {
     
     // MARK: Internal
     
-    @warn_unused_result
-    internal func applyToFetchRequest(fetchRequest: NSFetchRequest, context: NSManagedObjectContext, applyAffectedStores: Bool = true) -> Bool {
+    internal func applyToFetchRequest<ResultType: NSFetchRequestResult>(_ fetchRequest: NSFetchRequest<ResultType>, context: NSManagedObjectContext, applyAffectedStores: Bool = true) -> Bool {
         
         fetchRequest.entity = context.entityDescriptionForEntityClass(self.entityClass)
         guard applyAffectedStores else {
@@ -202,20 +193,20 @@ public struct From<T: NSManagedObject> {
             return true
         }
         CoreStore.log(
-            .Warning,
+            .warning,
             message: "Attempted to perform a fetch but could not find any persistent store for the entity \(cs_typeName(fetchRequest.entityName))"
         )
         return false
     }
     
-    internal func applyAffectedStoresForFetchedRequest(fetchRequest: NSFetchRequest, context: NSManagedObjectContext) -> Bool {
+    internal func applyAffectedStoresForFetchedRequest<U: NSFetchRequestResult>(_ fetchRequest: NSFetchRequest<U>, context: NSManagedObjectContext) -> Bool {
         
-        let stores = self.findPersistentStores(context: context)
+        let stores = self.findPersistentStores(context)
         fetchRequest.affectedStores = stores
         return stores?.isEmpty == false
     }
     
-    internal func upcast() -> From<NSManagedObject> {
+    internal func downcast() -> From<NSManagedObject> {
         
         return From<NSManagedObject>(
             entityClass: self.entityClass,
@@ -227,7 +218,7 @@ public struct From<T: NSManagedObject> {
     
     // MARK: Private
     
-    private let findPersistentStores: (context: NSManagedObjectContext) -> [NSPersistentStore]?
+    private let findPersistentStores: (_ context: NSManagedObjectContext) -> [NSPersistentStore]?
     
     private init(entityClass: AnyClass, configurations: [String?]?) {
         
@@ -253,121 +244,10 @@ public struct From<T: NSManagedObject> {
         }
     }
     
-    private init(entityClass: AnyClass, configurations: [String?]?, findPersistentStores: (context: NSManagedObjectContext) -> [NSPersistentStore]?) {
+    private init(entityClass: AnyClass, configurations: [String?]?, findPersistentStores: @escaping (_ context: NSManagedObjectContext) -> [NSPersistentStore]?) {
         
         self.entityClass = entityClass
         self.configurations = configurations
         self.findPersistentStores = findPersistentStores
     }
-    
-    
-    // MARK: Obsolete
-    
-    /**
-     Obsolete. Use initializers that accept configuration names.
-     */
-    @available(*, obsoleted=2.0.0, message="Use initializers that accept configuration names.")
-    public init(_ storeURL: NSURL, _ otherStoreURLs: NSURL...) {
-        
-        CoreStore.abort("Use initializers that accept configuration names.")
-    }
-    
-    /**
-     Obsolete. Use initializers that accept configuration names.
-     */
-    @available(*, obsoleted=2.0.0, message="Use initializers that accept configuration names.")
-    public init(_ storeURLs: [NSURL]) {
-        
-        CoreStore.abort("Use initializers that accept configuration names.")
-    }
-    
-    /**
-     Obsolete. Use initializers that accept configuration names.
-     */
-    @available(*, obsoleted=2.0.0, message="Use initializers that accept configuration names.")
-    public init(_ entity: T.Type, _ storeURL: NSURL, _ otherStoreURLs: NSURL...) {
-        
-        CoreStore.abort("Use initializers that accept configuration names.")
-    }
-    
-    /**
-     Obsolete. Use initializers that accept configuration names.
-     */
-    @available(*, obsoleted=2.0.0, message="Use initializers that accept configuration names.")
-    public init(_ entity: T.Type, _ storeURLs: [NSURL]) {
-        
-        CoreStore.abort("Use initializers that accept configuration names.")
-    }
-    
-    /**
-     Obsolete. Use initializers that accept configuration names.
-     */
-    @available(*, obsoleted=2.0.0, message="Use initializers that accept configuration names.")
-    public init(_ entityClass: AnyClass, _ storeURL: NSURL, _ otherStoreURLs: NSURL...) {
-        
-        CoreStore.abort("Use initializers that accept configuration names.")
-    }
-    
-    /**
-     Obsolete. Use initializers that accept configuration names.
-     */
-    @available(*, obsoleted=2.0.0, message="Use initializers that accept configuration names.")
-    public init(_ entityClass: AnyClass, _ storeURLs: [NSURL]) {
-        
-        CoreStore.abort("Use initializers that accept configuration names.")
-    }
-    
-    /**
-     Obsolete. Use initializers that accept configuration names.
-     */
-    @available(*, obsoleted=2.0.0, message="Use initializers that accept configuration names.")
-    public init(_ persistentStore: NSPersistentStore, _ otherPersistentStores: NSPersistentStore...) {
-        
-        CoreStore.abort("Use initializers that accept configuration names.")
-    }
-    
-    /**
-     Obsolete. Use initializers that accept configuration names.
-     */
-    @available(*, obsoleted=2.0.0, message="Use initializers that accept configuration names.")
-    public init(_ persistentStores: [NSPersistentStore]) {
-        
-        CoreStore.abort("Use initializers that accept configuration names.")
-    }
-    
-    /**
-     Obsolete. Use initializers that accept configuration names.
-     */
-    @available(*, obsoleted=2.0.0, message="Use initializers that accept configuration names.")
-    public init(_ entity: T.Type, _ persistentStore: NSPersistentStore, _ otherPersistentStores: NSPersistentStore...) {
-        
-        CoreStore.abort("Use initializers that accept configuration names.")
-    }
-    
-    /**
-     Obsolete. Use initializers that accept configuration names.
-     */
-    @available(*, obsoleted=2.0.0, message="Use initializers that accept configuration names.")
-    public init(_ entity: T.Type, _ persistentStores: [NSPersistentStore]) {
-        
-        CoreStore.abort("Use initializers that accept configuration names.")
-    }
-    
-    /**
-     Obsolete. Use initializers that accept configuration names.
-     */
-    @available(*, obsoleted=2.0.0, message="Use initializers that accept configuration names.")
-    public init(_ entityClass: AnyClass, _ persistentStore: NSPersistentStore, _ otherPersistentStores: NSPersistentStore...) {
-        
-        CoreStore.abort("Use initializers that accept configuration names.")
-    }
-    
-    /**
-     Obsolete. Use initializers that accept configuration names.
-     */
-    @available(*, obsoleted=2.0.0, message="Use initializers that accept configuration names.")
-    public init(_ entityClass: AnyClass, _ persistentStores: [NSPersistentStore]) {
-        
-        CoreStore.abort("Use initializers that accept configuration names.")
-    }
 }

Sources/Fetching and Querying/Concrete Clauses/GroupBy.swift

@@ -71,13 +71,13 @@ public struct GroupBy: QueryClause, Hashable {
     
     // MARK: QueryClause
     
-    public func applyToFetchRequest(fetchRequest: NSFetchRequest) {
+    public func applyToFetchRequest<ResultType: NSFetchRequestResult>(_ fetchRequest: NSFetchRequest<ResultType>) {
         
-        if let keyPaths = fetchRequest.propertiesToGroupBy as? [String] where keyPaths != self.keyPaths {
+        if let keyPaths = fetchRequest.propertiesToGroupBy as? [String], keyPaths != self.keyPaths {
             
             CoreStore.log(
-                .Warning,
-                message: "An existing \"propertiesToGroupBy\" for the \(cs_typeName(NSFetchRequest)) was overwritten by \(cs_typeName(self)) query clause."
+                .warning,
+                message: "An existing \"propertiesToGroupBy\" for the \(cs_typeName(NSFetchRequest<ResultType>.self)) was overwritten by \(cs_typeName(self)) query clause."
             )
         }
         
@@ -85,6 +85,14 @@ public struct GroupBy: QueryClause, Hashable {
     }
     
     
+    // MARK: Equatable
+    
+    public static func == (lhs: GroupBy, rhs: GroupBy) -> Bool {
+        
+        return lhs.keyPaths == rhs.keyPaths
+    }
+    
+    
     // MARK: Hashable
     
     public var hashValue: Int {
@@ -92,12 +100,3 @@ public struct GroupBy: QueryClause, Hashable {
         return (self.keyPaths as NSArray).hashValue
     }
 }
-
-
-// MARK: - GroupBy: Equatable
-
-@warn_unused_result
-public func == (lhs: GroupBy, rhs: GroupBy) -> Bool {
-    
-    return lhs.keyPaths == rhs.keyPaths
-}

Sources/Fetching and Querying/Concrete Clauses/OrderBy.swift

@@ -27,17 +27,6 @@ import Foundation
 import CoreData
 
 
-public func +(left: OrderBy, right: OrderBy) -> OrderBy {
-    
-    return OrderBy(left.sortDescriptors + right.sortDescriptors)
-}
-
-public func +=(inout left: OrderBy, right: OrderBy) {
-    
-    left = left + right
-}
-
-
 // MARK: - KeyPath
     
 public typealias KeyPath = String
@@ -53,12 +42,12 @@ public enum SortKey {
     /**
      Indicates that the `KeyPath` should be sorted in ascending order
      */
-    case Ascending(KeyPath)
+    case ascending(KeyPath)
     
     /**
      Indicates that the `KeyPath` should be sorted in descending order
      */
-    case Descending(KeyPath)
+    case descending(KeyPath)
 }
 
 
@@ -69,6 +58,22 @@ public enum SortKey {
  */
 public struct OrderBy: FetchClause, QueryClause, DeleteClause, Hashable {
     
+    /**
+     Combines two `OrderBy` sort descriptors together
+     */
+    public static func + (left: OrderBy, right: OrderBy) -> OrderBy {
+        
+        return OrderBy(left.sortDescriptors + right.sortDescriptors)
+    }
+    
+    /**
+     Combines two `OrderBy` sort descriptors together and stores the result to the left operand
+     */
+    public static func += (left: inout OrderBy, right: OrderBy) {
+        
+        left = left + right
+    }
+    
     /**
      The list of sort descriptors
      */
@@ -114,10 +119,10 @@ public struct OrderBy: FetchClause, QueryClause, DeleteClause, Hashable {
                 
                 switch sortKey {
                     
-                case .Ascending(let keyPath):
+                case .ascending(let keyPath):
                     return NSSortDescriptor(key: keyPath, ascending: true)
                     
-                case .Descending(let keyPath):
+                case .descending(let keyPath):
                     return NSSortDescriptor(key: keyPath, ascending: false)
                 }
             }
@@ -138,13 +143,13 @@ public struct OrderBy: FetchClause, QueryClause, DeleteClause, Hashable {
     
     // MARK: FetchClause, QueryClause, DeleteClause
     
-    public func applyToFetchRequest(fetchRequest: NSFetchRequest) {
+    public func applyToFetchRequest<ResultType: NSFetchRequestResult>(_ fetchRequest: NSFetchRequest<ResultType>) {
         
-        if let sortDescriptors = fetchRequest.sortDescriptors where sortDescriptors != self.sortDescriptors {
+        if let sortDescriptors = fetchRequest.sortDescriptors, sortDescriptors != self.sortDescriptors {
             
             CoreStore.log(
-                .Warning,
-                message: "Existing sortDescriptors for the \(cs_typeName(NSFetchRequest)) was overwritten by \(cs_typeName(self)) query clause."
+                .warning,
+                message: "Existing sortDescriptors for the \(cs_typeName(fetchRequest)) was overwritten by \(cs_typeName(self)) query clause."
             )
         }
         
@@ -152,6 +157,14 @@ public struct OrderBy: FetchClause, QueryClause, DeleteClause, Hashable {
     }
     
     
+    // MARK: Equatable
+    
+    public static func == (lhs: OrderBy, rhs: OrderBy) -> Bool {
+        
+        return lhs.sortDescriptors == rhs.sortDescriptors
+    }
+    
+    
     // MARK: Hashable
     
     public var hashValue: Int {
@@ -159,12 +172,3 @@ public struct OrderBy: FetchClause, QueryClause, DeleteClause, Hashable {
         return (self.sortDescriptors as NSArray).hashValue
     }
 }
-
-
-// MARK: - OrderBy: Equatable
-
-@warn_unused_result
-public func == (lhs: OrderBy, rhs: OrderBy) -> Bool {
-    
-    return lhs.sortDescriptors == rhs.sortDescriptors
-}

Sources/Fetching and Querying/Concrete Clauses/Select.swift

@@ -44,7 +44,7 @@ public protocol SelectValueResultType: SelectResultType {
     
     static var attributeType: NSAttributeType { get }
     
-    static func fromResultObject(result: AnyObject) -> Self?
+    static func fromResultObject(_ result: Any) -> Self?
 }
 
 
@@ -55,7 +55,7 @@ public protocol SelectValueResultType: SelectResultType {
  */
 public protocol SelectAttributesResultType: SelectResultType {
     
-    static func fromResultObjects(result: [AnyObject]) -> [[NSString: AnyObject]]
+    static func fromResultObjects(_ result: [Any]) -> [[String: Any]]
 }
 
 
@@ -64,54 +64,52 @@ public protocol SelectAttributesResultType: SelectResultType {
 /**
  The `SelectTerm` is passed to the `Select` clause to indicate the attributes/aggregate keys to be queried.
  */
-public enum SelectTerm: StringLiteralConvertible, Hashable {
+public enum SelectTerm: ExpressibleByStringLiteral, Hashable {
     
     /**
      Provides a `SelectTerm` to a `Select` clause for querying an entity attribute. A shorter way to do the same is to assign from the string keypath directly:
      ```
      let fullName = CoreStore.queryValue(
-         From(MyPersonEntity),
-         Select<String>(.Attribute("fullName")),
+         From<MyPersonEntity>(),
+         Select<String>(.attribute("fullName")),
          Where("employeeID", isEqualTo: 1111)
      )
      ```
      is equivalent to:
      ```
      let fullName = CoreStore.queryValue(
-         From(MyPersonEntity),
+         From<MyPersonEntity>(),
          Select<String>("fullName"),
          Where("employeeID", isEqualTo: 1111)
      )
      ```
-     
      - parameter keyPath: the attribute name
      - returns: a `SelectTerm` to a `Select` clause for querying an entity attribute
      */
-    public static func Attribute(keyPath: KeyPath) -> SelectTerm {
+    public static func attribute(_ keyPath: KeyPath) -> SelectTerm {
         
-        return ._Attribute(keyPath)
+        return ._attribute(keyPath)
     }
     
     /**
      Provides a `SelectTerm` to a `Select` clause for querying the average value of an attribute.
      ```
      let averageAge = CoreStore.queryValue(
-         From(MyPersonEntity),
-         Select<Int>(.Average("age"))
+         From<MyPersonEntity>(),
+         Select<Int>(.average("age"))
      )
      ```
-     
      - parameter keyPath: the attribute name
      - parameter alias: the dictionary key to use to access the result. Ignored when the query return value is not an `NSDictionary`. If `nil`, the default key "average(<attributeName>)" is used
      - returns: a `SelectTerm` to a `Select` clause for querying the average value of an attribute
      */
-    public static func Average(keyPath: KeyPath, As alias: KeyPath? = nil) -> SelectTerm {
+    public static func average(_ keyPath: KeyPath, as alias: KeyPath? = nil) -> SelectTerm {
         
-        return ._Aggregate(
+        return ._aggregate(
             function: "average:",
             keyPath: keyPath,
             alias: alias ?? "average(\(keyPath))",
-            nativeType: .DecimalAttributeType
+            nativeType: .decimalAttributeType
         )
     }
     
@@ -119,22 +117,21 @@ public enum SelectTerm: StringLiteralConvertible, Hashable {
      Provides a `SelectTerm` to a `Select` clause for a count query.
      ```
      let numberOfEmployees = CoreStore.queryValue(
-         From(MyPersonEntity),
-         Select<Int>(.Count("employeeID"))
+         From<MyPersonEntity>(),
+         Select<Int>(.count("employeeID"))
      )
      ```
-     
      - parameter keyPath: the attribute name
      - parameter alias: the dictionary key to use to access the result. Ignored when the query return value is not an `NSDictionary`. If `nil`, the default key "count(<attributeName>)" is used
      - returns: a `SelectTerm` to a `Select` clause for a count query
      */
-    public static func Count(keyPath: KeyPath, As alias: KeyPath? = nil) -> SelectTerm {
+    public static func count(_ keyPath: KeyPath, as alias: KeyPath? = nil) -> SelectTerm {
         
-        return ._Aggregate(
+        return ._aggregate(
             function: "count:",
             keyPath: keyPath,
             alias: alias ?? "count(\(keyPath))",
-            nativeType: .Integer64AttributeType
+            nativeType: .integer64AttributeType
         )
     }
     
@@ -142,22 +139,21 @@ public enum SelectTerm: StringLiteralConvertible, Hashable {
      Provides a `SelectTerm` to a `Select` clause for querying the maximum value for an attribute.
      ```
      let maximumAge = CoreStore.queryValue(
-         From(MyPersonEntity),
-         Select<Int>(.Maximum("age"))
+         From<MyPersonEntity>(),
+         Select<Int>(.maximum("age"))
      )
      ```
-     
      - parameter keyPath: the attribute name
      - parameter alias: the dictionary key to use to access the result. Ignored when the query return value is not an `NSDictionary`. If `nil`, the default key "max(<attributeName>)" is used
      - returns: a `SelectTerm` to a `Select` clause for querying the maximum value for an attribute
      */
-    public static func Maximum(keyPath: KeyPath, As alias: KeyPath? = nil) -> SelectTerm {
+    public static func maximum(_ keyPath: KeyPath, as alias: KeyPath? = nil) -> SelectTerm {
         
-        return ._Aggregate(
+        return ._aggregate(
             function: "max:",
             keyPath: keyPath,
             alias: alias ?? "max(\(keyPath))",
-            nativeType: .UndefinedAttributeType
+            nativeType: .undefinedAttributeType
         )
     }
     
@@ -165,22 +161,21 @@ public enum SelectTerm: StringLiteralConvertible, Hashable {
      Provides a `SelectTerm` to a `Select` clause for querying the minimum value for an attribute.
      ```
      let minimumAge = CoreStore.queryValue(
-         From(MyPersonEntity),
-         Select<Int>(.Minimum("age"))
+         From<MyPersonEntity>(),
+         Select<Int>(.minimum("age"))
      )
      ```
-     
      - parameter keyPath: the attribute name
      - parameter alias: the dictionary key to use to access the result. Ignored when the query return value is not an `NSDictionary`. If `nil`, the default key "min(<attributeName>)" is used
      - returns: a `SelectTerm` to a `Select` clause for querying the minimum value for an attribute
      */
-    public static func Minimum(keyPath: KeyPath, As alias: KeyPath? = nil) -> SelectTerm {
+    public static func minimum(_ keyPath: KeyPath, as alias: KeyPath? = nil) -> SelectTerm {
         
-        return ._Aggregate(
+        return ._aggregate(
             function: "min:",
             keyPath: keyPath,
             alias: alias ?? "min(\(keyPath))",
-            nativeType: .UndefinedAttributeType
+            nativeType: .undefinedAttributeType
         )
     }
     
@@ -188,22 +183,21 @@ public enum SelectTerm: StringLiteralConvertible, Hashable {
      Provides a `SelectTerm` to a `Select` clause for querying the sum value for an attribute.
      ```
      let totalAge = CoreStore.queryValue(
-         From(MyPersonEntity),
-         Select<Int>(.Sum("age"))
+         From<MyPersonEntity>(),
+         Select<Int>(.sum("age"))
      )
      ```
-     
      - parameter keyPath: the attribute name
      - parameter alias: the dictionary key to use to access the result. Ignored when the query return value is not an `NSDictionary`. If `nil`, the default key "sum(<attributeName>)" is used
      - returns: a `SelectTerm` to a `Select` clause for querying the sum value for an attribute
      */
-    public static func Sum(keyPath: KeyPath, As alias: KeyPath? = nil) -> SelectTerm {
+    public static func sum(_ keyPath: KeyPath, as alias: KeyPath? = nil) -> SelectTerm {
         
-        return ._Aggregate(
+        return ._aggregate(
             function: "sum:",
             keyPath: keyPath,
             alias: alias ?? "sum(\(keyPath))",
-            nativeType: .DecimalAttributeType
+            nativeType: .decimalAttributeType
         )
     }
     
@@ -211,40 +205,64 @@ public enum SelectTerm: StringLiteralConvertible, Hashable {
      Provides a `SelectTerm` to a `Select` clause for querying the `NSManagedObjectID`.
      ```
      let objectID = CoreStore.queryValue(
-         From(MyPersonEntity),
+         From<MyPersonEntity>(),
          Select<NSManagedObjectID>(),
          Where("employeeID", isEqualTo: 1111)
      )
      ```
-     
      - parameter keyPath: the attribute name
      - parameter alias: the dictionary key to use to access the result. Ignored when the query return value is not an `NSDictionary`. If `nil`, the default key "objecID" is used
      - returns: a `SelectTerm` to a `Select` clause for querying the sum value for an attribute
      */
-    public static func ObjectID(As alias: KeyPath? = nil) -> SelectTerm {
+    public static func objectID(as alias: KeyPath? = nil) -> SelectTerm {
         
-        return ._Identity(
+        return ._identity(
             alias: alias ?? "objectID",
-            nativeType: .ObjectIDAttributeType
+            nativeType: .objectIDAttributeType
         )
     }
     
     
-    // MARK: StringLiteralConvertible
+    // MARK: ExpressibleByStringLiteral
     
     public init(stringLiteral value: KeyPath) {
         
-        self = ._Attribute(value)
+        self = ._attribute(value)
     }
     
     public init(unicodeScalarLiteral value: KeyPath) {
         
-        self = ._Attribute(value)
+        self = ._attribute(value)
     }
     
     public init(extendedGraphemeClusterLiteral value: KeyPath) {
         
-        self = ._Attribute(value)
+        self = ._attribute(value)
+    }
+    
+    
+    // MARK: Equatable
+    
+    public static func == (lhs: SelectTerm, rhs: SelectTerm) -> Bool {
+        
+        switch (lhs, rhs) {
+            
+        case (._attribute(let keyPath1), ._attribute(let keyPath2)):
+            return keyPath1 == keyPath2
+            
+        case (._aggregate(let function1, let keyPath1, let alias1, let nativeType1),
+              ._aggregate(let function2, let keyPath2, let alias2, let nativeType2)):
+            return function1 == function2
+                && keyPath1 == keyPath2
+                && alias1 == alias2
+                && nativeType1 == nativeType2
+            
+        case (._identity(let alias1, let nativeType1), ._identity(let alias2, let nativeType2)):
+            return alias1 == alias2 && nativeType1 == nativeType2
+            
+        default:
+            return false
+        }
     }
     
     
@@ -254,13 +272,13 @@ public enum SelectTerm: StringLiteralConvertible, Hashable {
         
         switch self {
             
-        case ._Attribute(let keyPath):
+        case ._attribute(let keyPath):
             return 0 ^ keyPath.hashValue
             
-        case ._Aggregate(let function, let keyPath, let alias, let nativeType):
+        case ._aggregate(let function, let keyPath, let alias, let nativeType):
             return 1 ^ function.hashValue ^ keyPath.hashValue ^ alias.hashValue ^ nativeType.hashValue
             
-        case ._Identity(let alias, let nativeType):
+        case ._identity(let alias, let nativeType):
             return 3 ^ alias.hashValue ^ nativeType.hashValue
         }
     }
@@ -268,35 +286,9 @@ public enum SelectTerm: StringLiteralConvertible, Hashable {
     
     // MARK: Internal
     
-    case _Attribute(KeyPath)
-    case _Aggregate(function: String, keyPath: KeyPath, alias: String, nativeType: NSAttributeType)
-    case _Identity(alias: String, nativeType: NSAttributeType)
-}
-
-
-// MARK: - SelectTerm: Equatable
-
-@warn_unused_result
-public func == (lhs: SelectTerm, rhs: SelectTerm) -> Bool {
-    
-    switch (lhs, rhs) {
-        
-    case (._Attribute(let keyPath1), ._Attribute(let keyPath2)):
-        return keyPath1 == keyPath2
-        
-    case (._Aggregate(let function1, let keyPath1, let alias1, let nativeType1),
-        ._Aggregate(let function2, let keyPath2, let alias2, let nativeType2)):
-        return function1 == function2
-            && keyPath1 == keyPath2
-            && alias1 == alias2
-            && nativeType1 == nativeType2
-        
-    case (._Identity(let alias1, let nativeType1), ._Identity(let alias2, let nativeType2)):
-        return alias1 == alias2 && nativeType1 == nativeType2
-        
-    default:
-        return false
-    }
+    case _attribute(KeyPath)
+    case _aggregate(function: String, keyPath: KeyPath, alias: String, nativeType: NSAttributeType)
+    case _identity(alias: String, nativeType: NSAttributeType)
 }
 
 
@@ -308,15 +300,15 @@ public func == (lhs: SelectTerm, rhs: SelectTerm) -> Bool {
  You can bind the return type by specializing the initializer:
  ```
  let maximumAge = CoreStore.queryValue(
-     From(MyPersonEntity),
-     Select<Int>(.Maximum("age"))
+     From<MyPersonEntity>(),
+     Select<Int>(.maximum("age"))
  )
  ```
  or by casting the type of the return value:
  ```
  let maximumAge: Int = CoreStore.queryValue(
-     From(MyPersonEntity),
-     Select(.Maximum("age"))
+     From<MyPersonEntity>(),
+     Select(.maximum("age"))
  )
  ```
  Valid return types depend on the query:
@@ -330,13 +322,14 @@ public func == (lhs: SelectTerm, rhs: SelectTerm) -> Bool {
      - `Double`
      - `Float`
      - `String`
+     - `Date`
+     - `Data`
      - `NSNumber`
      - `NSString`
      - `NSDecimalNumber`
      - `NSDate`
      - `NSData`
      - `NSManagedObjectID`
-     - `NSString`
  - for `queryAttributes(...)` methods:
      - `NSDictionary`
  
@@ -371,11 +364,19 @@ public struct Select<T: SelectResultType>: Hashable {
     }
     
     
+    // MARK: Equatable
+    
+    public static func == <T: SelectResultType, U: SelectResultType>(lhs: Select<T>, rhs: Select<U>) -> Bool {
+        
+        return lhs.selectTerms == rhs.selectTerms
+    }
+    
+    
     // MARK: Hashable
     
     public var hashValue: Int {
         
-        return self.selectTerms.map { $0.hashValue }.reduce(0, combine: ^)
+        return self.selectTerms.map { $0.hashValue }.reduce(0, ^)
     }
     
     
@@ -388,36 +389,27 @@ public extension Select where T: NSManagedObjectID {
     
     public init() {
         
-        self.init(.ObjectID())
+        self.init(.objectID())
     }
 }
 
 
-// MARK: - Select: Equatable
-
-@warn_unused_result
-public func == <T: SelectResultType, U: SelectResultType>(lhs: Select<T>, rhs: Select<U>) -> Bool {
-    
-    return lhs.selectTerms == rhs.selectTerms
-}
-
-
 // MARK: - Bool: SelectValueResultType
 
 extension Bool: SelectValueResultType {
     
     public static var attributeType: NSAttributeType {
         
-        return .BooleanAttributeType
+        return .booleanAttributeType
     }
     
-    public static func fromResultObject(result: AnyObject) -> Bool? {
+    public static func fromResultObject(_ result: Any) -> Bool? {
         switch result {
             
         case let decimal as NSDecimalNumber:
             // iOS: NSDecimalNumber(string: "0.5").boolValue // true
             // OSX: NSDecimalNumber(string: "0.5").boolValue // false
-            return NSNumber(double: decimal.doubleValue).boolValue
+            return NSNumber(value: decimal.doubleValue).boolValue
             
         case let number as NSNumber:
             return number.boolValue
@@ -435,12 +427,12 @@ extension Int8: SelectValueResultType {
     
     public static var attributeType: NSAttributeType {
         
-        return .Integer64AttributeType
+        return .integer64AttributeType
     }
     
-    public static func fromResultObject(result: AnyObject) -> Int8? {
+    public static func fromResultObject(_ result: Any) -> Int8? {
         
-        guard let value = (result as? NSNumber)?.longLongValue else {
+        guard let value = (result as? NSNumber)?.int64Value else {
             
             return nil
         }
@@ -455,12 +447,12 @@ extension Int16: SelectValueResultType {
     
     public static var attributeType: NSAttributeType {
         
-        return .Integer64AttributeType
+        return .integer64AttributeType
     }
     
-    public static func fromResultObject(result: AnyObject) -> Int16? {
+    public static func fromResultObject(_ result: Any) -> Int16? {
         
-        guard let value = (result as? NSNumber)?.longLongValue else {
+        guard let value = (result as? NSNumber)?.int64Value else {
             
             return nil
         }
@@ -475,12 +467,12 @@ extension Int32: SelectValueResultType {
     
     public static var attributeType: NSAttributeType {
         
-        return .Integer64AttributeType
+        return .integer64AttributeType
     }
     
-    public static func fromResultObject(result: AnyObject) -> Int32? {
+    public static func fromResultObject(_ result: Any) -> Int32? {
         
-        guard let value = (result as? NSNumber)?.longLongValue else {
+        guard let value = (result as? NSNumber)?.int64Value else {
             
             return nil
         }
@@ -495,12 +487,12 @@ extension Int64: SelectValueResultType {
     
     public static var attributeType: NSAttributeType {
         
-        return .Integer64AttributeType
+        return .integer64AttributeType
     }
     
-    public static func fromResultObject(result: AnyObject) -> Int64? {
+    public static func fromResultObject(_ result: Any) -> Int64? {
         
-        return (result as? NSNumber)?.longLongValue
+        return (result as? NSNumber)?.int64Value
     }
 }
 
@@ -511,12 +503,12 @@ extension Int: SelectValueResultType {
     
     public static var attributeType: NSAttributeType {
         
-        return .Integer64AttributeType
+        return .integer64AttributeType
     }
     
-    public static func fromResultObject(result: AnyObject) -> Int? {
+    public static func fromResultObject(_ result: Any) -> Int? {
         
-        guard let value = (result as? NSNumber)?.longLongValue else {
+        guard let value = (result as? NSNumber)?.int64Value else {
             
             return nil
         }
@@ -531,10 +523,10 @@ extension Double: SelectValueResultType {
     
     public static var attributeType: NSAttributeType {
         
-        return .DoubleAttributeType
+        return .doubleAttributeType
     }
     
-    public static func fromResultObject(result: AnyObject) -> Double? {
+    public static func fromResultObject(_ result: Any) -> Double? {
         
         return (result as? NSNumber)?.doubleValue
     }
@@ -547,10 +539,10 @@ extension Float: SelectValueResultType {
     
     public static var attributeType: NSAttributeType {
         
-        return .FloatAttributeType
+        return .floatAttributeType
     }
     
-    public static func fromResultObject(result: AnyObject) -> Float? {
+    public static func fromResultObject(_ result: Any) -> Float? {
         
         return (result as? NSNumber)?.floatValue
     }
@@ -563,12 +555,44 @@ extension String: SelectValueResultType {
     
     public static var attributeType: NSAttributeType {
         
-        return .StringAttributeType
+        return .stringAttributeType
     }
     
-    public static func fromResultObject(result: AnyObject) -> String? {
+    public static func fromResultObject(_ result: Any) -> String? {
         
-        return result as? NSString as? String
+        return result as? String
+    }
+}
+
+
+// MARK: - Date: SelectValueResultType
+
+extension Date: SelectValueResultType {
+    
+    public static var attributeType: NSAttributeType {
+        
+        return .dateAttributeType
+    }
+    
+    public static func fromResultObject(_ result: Any) -> Date? {
+        
+        return result as? Date
+    }
+}
+
+
+// MARK: - Data: SelectValueResultType
+
+extension Data: SelectValueResultType {
+    
+    public static var attributeType: NSAttributeType {
+        
+        return .binaryDataAttributeType
+    }
+    
+    public static func fromResultObject(_ result: Any) -> Data? {
+        
+        return result as? Data
     }
 }
 
@@ -579,12 +603,12 @@ extension NSNumber: SelectValueResultType {
     
     public class var attributeType: NSAttributeType {
         
-        return .Integer64AttributeType
+        return .integer64AttributeType
     }
     
-    public class func fromResultObject(result: AnyObject) -> Self? {
+    public class func fromResultObject(_ result: Any) -> Self? {
         
-        func forceCast<T: NSNumber>(object: AnyObject) -> T? {
+        func forceCast<T: NSNumber>(_ object: Any) -> T? {
             
             return (object as? T)
         }
@@ -599,12 +623,12 @@ extension NSString: SelectValueResultType {
     
     public class var attributeType: NSAttributeType {
         
-        return .StringAttributeType
+        return .stringAttributeType
     }
     
-    public class func fromResultObject(result: AnyObject) -> Self? {
+    public class func fromResultObject(_ result: Any) -> Self? {
         
-        func forceCast<T: NSString>(object: AnyObject) -> T? {
+        func forceCast<T: NSString>(_ object: Any) -> T? {
             
             return (object as? T)
         }
@@ -619,12 +643,12 @@ extension NSDecimalNumber {
     
     public override class var attributeType: NSAttributeType {
         
-        return .DecimalAttributeType
+        return .decimalAttributeType
     }
     
-    public override class func fromResultObject(result: AnyObject) -> Self? {
+    public override class func fromResultObject(_ result: Any) -> Self? {
         
-        func forceCast<T: NSDecimalNumber>(object: AnyObject) -> T? {
+        func forceCast<T: NSDecimalNumber>(_ object: Any) -> T? {
             
             return (object as? T)
         }
@@ -637,14 +661,14 @@ extension NSDecimalNumber {
 
 extension NSDate: SelectValueResultType {
     
-    public class var attributeType: NSAttributeType {
+    public static var attributeType: NSAttributeType {
         
-        return .DateAttributeType
+        return .dateAttributeType
     }
     
-    public class func fromResultObject(result: AnyObject) -> Self? {
+    public class func fromResultObject(_ result: Any) -> Self? {
         
-        func forceCast<T: NSDate>(object: AnyObject) -> T? {
+        func forceCast<T: NSDate>(_ object: Any) -> T? {
             
             return (object as? T)
         }
@@ -657,14 +681,14 @@ extension NSDate: SelectValueResultType {
 
 extension NSData: SelectValueResultType {
     
-    public class var attributeType: NSAttributeType {
+    public static var attributeType: NSAttributeType {
         
-        return .BinaryDataAttributeType
+        return .binaryDataAttributeType
     }
     
-    public class func fromResultObject(result: AnyObject) -> Self? {
+    public class func fromResultObject(_ result: Any) -> Self? {
         
-        func forceCast<T: NSData>(object: AnyObject) -> T? {
+        func forceCast<T: NSData>(_ object: Any) -> T? {
             
             return (object as? T)
         }
@@ -679,12 +703,12 @@ extension NSManagedObjectID: SelectValueResultType {
     
     public class var attributeType: NSAttributeType {
         
-        return .ObjectIDAttributeType
+        return .objectIDAttributeType
     }
     
-    public class func fromResultObject(result: AnyObject) -> Self? {
+    public class func fromResultObject(_ result: Any) -> Self? {
         
-        func forceCast<T: NSManagedObjectID>(object: AnyObject) -> T? {
+        func forceCast<T: NSManagedObjectID>(_ object: Any) -> T? {
             
             return (object as? T)
         }
@@ -699,25 +723,25 @@ extension NSDictionary: SelectAttributesResultType {
     
     // MARK: SelectAttributesResultType
     
-    public class func fromResultObjects(result: [AnyObject]) -> [[NSString: AnyObject]] {
+    public class func fromResultObjects(_ result: [Any]) -> [[String: Any]] {
         
-        return result as! [[NSString: AnyObject]]
+        return result as! [[String: Any]]
     }
 }
 
 
 // MARK: - Internal
 
-internal extension CollectionType where Generator.Element == SelectTerm {
+internal extension Collection where Iterator.Element == SelectTerm {
     
-    internal func applyToFetchRequest<T>(fetchRequest: NSFetchRequest, owner: T) {
+    internal func applyToFetchRequest<T>(_ fetchRequest: NSFetchRequest<NSFetchRequestResult>, owner: T) {
         
         fetchRequest.includesPendingChanges = false
-        fetchRequest.resultType = .DictionaryResultType
+        fetchRequest.resultType = .dictionaryResultType
         
-        func attributeDescriptionForKeyPath(keyPath: String, inEntity entity: NSEntityDescription) -> NSAttributeDescription? {
+        func attributeDescription(for keyPath: String, in entity: NSEntityDescription) -> NSAttributeDescription? {
             
-            let components = keyPath.componentsSeparatedByString(".")
+            let components = keyPath.components(separatedBy: ".")
             switch components.count {
                 
             case 0:
@@ -731,39 +755,39 @@ internal extension CollectionType where Generator.Element == SelectTerm {
                     
                     return nil
                 }
-                return attributeDescriptionForKeyPath(
-                    components.dropFirst().joinWithSeparator("."),
-                    inEntity: relationship.entity
+                return attributeDescription(
+                    for: components.dropFirst().joined(separator: "."),
+                    in: relationship.entity
                 )
             }
         }
         
-        var propertiesToFetch = [AnyObject]()
+        var propertiesToFetch = [Any]()
         for term in self {
             
             switch term {
                 
-            case ._Attribute(let keyPath):
+            case ._attribute(let keyPath):
                 let entityDescription = fetchRequest.entity!
-                if let attributeDescription = attributeDescriptionForKeyPath(keyPath, inEntity: entityDescription) {
+                if let attributeDescription = attributeDescription(for: keyPath, in: entityDescription) {
                     
                     propertiesToFetch.append(attributeDescription)
                 }
                 else {
                     
                     CoreStore.log(
-                        .Warning,
+                        .warning,
                         message: "The key path \"\(keyPath)\" could not be resolved in entity \(cs_typeName(entityDescription.managedObjectClassName)) as an attribute and will be ignored by \(cs_typeName(owner)) query clause."
                     )
                 }
                 
-            case ._Aggregate(let function, let keyPath, let alias, let nativeType):
+            case ._aggregate(let function, let keyPath, let alias, let nativeType):
                 let entityDescription = fetchRequest.entity!
-                if let attributeDescription = attributeDescriptionForKeyPath(keyPath, inEntity: entityDescription) {
+                if let attributeDescription = attributeDescription(for: keyPath, in: entityDescription) {
                     
                     let expressionDescription = NSExpressionDescription()
                     expressionDescription.name = alias
-                    if nativeType == .UndefinedAttributeType {
+                    if nativeType == .undefinedAttributeType {
                         
                         expressionDescription.expressionResultType = attributeDescription.attributeType
                     }
@@ -780,17 +804,17 @@ internal extension CollectionType where Generator.Element == SelectTerm {
                 else {
                     
                     CoreStore.log(
-                        .Warning,
+                        .warning,
                         message: "The key path \"\(keyPath)\" could not be resolved in entity \(cs_typeName(entityDescription.managedObjectClassName)) as an attribute and will be ignored by \(cs_typeName(owner)) query clause."
                     )
                 }
                 
-            case ._Identity(let alias, let nativeType):
+            case ._identity(let alias, let nativeType):
                 let expressionDescription = NSExpressionDescription()
                 expressionDescription.name = alias
-                if nativeType == .UndefinedAttributeType {
+                if nativeType == .undefinedAttributeType {
                     
-                    expressionDescription.expressionResultType = .ObjectIDAttributeType
+                    expressionDescription.expressionResultType = .objectIDAttributeType
                 }
                 else {
                     
@@ -809,13 +833,13 @@ internal extension CollectionType where Generator.Element == SelectTerm {
         
         switch self.first! {
             
-        case ._Attribute(let keyPath):
+        case ._attribute(let keyPath):
             return keyPath
             
-        case ._Aggregate(_, _, let alias, _):
+        case ._aggregate(_, _, let alias, _):
             return alias
             
-        case ._Identity(let alias, _):
+        case ._identity(let alias, _):
             return alias
         }
     }

Sources/Fetching and Querying/Concrete Clauses/Tweak.swift

@@ -34,7 +34,7 @@ import CoreData
  Sample usage:
  ```
  let employees = transaction.fetchAll(
-     From(MyPersonEntity),
+     From<MyPersonEntity>(),
      Tweak { (fetchRequest) -> Void in
          fetchRequest.includesPendingChanges = false
          fetchRequest.fetchLimit = 5
@@ -47,7 +47,7 @@ public struct Tweak: FetchClause, QueryClause, DeleteClause {
     /**
      The block to customize the `NSFetchRequest`
      */
-    public let closure: (fetchRequest: NSFetchRequest) -> Void
+    public let closure: (_ fetchRequest: NSFetchRequest<NSFetchRequestResult>) -> Void
     
     /**
      Initializes a `Tweak` clause with a closure where the `NSFetchRequest` may be configured.
@@ -55,7 +55,7 @@ public struct Tweak: FetchClause, QueryClause, DeleteClause {
      - Important: `Tweak`'s closure is executed only just before the fetch occurs, so make sure that any values captured by the closure is not prone to race conditions. Also, some utilities (such as `ListMonitor`s) may keep `FetchClause`s in memory and may thus introduce retain cycles if reference captures are not handled properly.
      - parameter closure: the block to customize the `NSFetchRequest`
      */
-    public init(_ closure: (fetchRequest: NSFetchRequest) -> Void) {
+    public init(_ closure: @escaping (_ fetchRequest: NSFetchRequest<NSFetchRequestResult>) -> Void) {
         
         self.closure = closure
     }
@@ -63,8 +63,8 @@ public struct Tweak: FetchClause, QueryClause, DeleteClause {
     
     // MARK: FetchClause, QueryClause, DeleteClause
     
-    public func applyToFetchRequest(fetchRequest: NSFetchRequest) {
+    public func applyToFetchRequest<ResultType: NSFetchRequestResult>(_ fetchRequest: NSFetchRequest<ResultType>) {
         
-        self.closure(fetchRequest: fetchRequest)
+        self.closure(fetchRequest as! NSFetchRequest<NSFetchRequestResult>)
     }
 }

Sources/Fetching and Querying/Concrete Clauses/Where.swift

@@ -27,22 +27,6 @@ import Foundation
 import CoreData
 
 
-public func &&(left: Where, right: Where) -> Where {
-    
-    return Where(NSCompoundPredicate(type: .AndPredicateType, subpredicates: [left.predicate, right.predicate]))
-}
-
-public func ||(left: Where, right: Where) -> Where {
-    
-    return Where(NSCompoundPredicate(type: .OrPredicateType, subpredicates: [left.predicate, right.predicate]))
-}
-
-public prefix func !(clause: Where) -> Where {
-    
-    return Where(NSCompoundPredicate(type: .NotPredicateType, subpredicates: [clause.predicate]))
-}
-
-
 // MARK: - Where
 
 /**
@@ -50,6 +34,30 @@ public prefix func !(clause: Where) -> Where {
  */
 public struct Where: FetchClause, QueryClause, DeleteClause, Hashable {
     
+    /**
+     Combines two `Where` predicates together using `AND` operator
+     */
+    public static func && (left: Where, right: Where) -> Where {
+        
+        return Where(NSCompoundPredicate(type: .and, subpredicates: [left.predicate, right.predicate]))
+    }
+    
+    /**
+     Combines two `Where` predicates together using `OR` operator
+     */
+    public static func || (left: Where, right: Where) -> Where {
+        
+        return Where(NSCompoundPredicate(type: .or, subpredicates: [left.predicate, right.predicate]))
+    }
+    
+    /**
+     Inverts the predicate of a `Where` clause using `NOT` operator
+     */
+    public static prefix func ! (clause: Where) -> Where {
+        
+        return Where(NSCompoundPredicate(type: .not, subpredicates: [clause.predicate]))
+    }
+    
     /**
      The `NSPredicate` for the fetch or query
      */
@@ -79,7 +87,7 @@ public struct Where: FetchClause, QueryClause, DeleteClause, Hashable {
      - parameter format: the format string for the predicate
      - parameter args: the arguments for `format`
      */
-    public init(_ format: String, _ args: NSObject...) {
+    public init(_ format: String, _ args: Any...) {
         
         self.init(NSPredicate(format: format, argumentArray: args))
     }
@@ -90,33 +98,39 @@ public struct Where: FetchClause, QueryClause, DeleteClause, Hashable {
      - parameter format: the format string for the predicate
      - parameter argumentArray: the arguments for `format`
      */
-    public init(_ format: String, argumentArray: [NSObject]?) {
+    public init(_ format: String, argumentArray: [Any]?) {
         
         self.init(NSPredicate(format: format, argumentArray: argumentArray))
     }
     
+    /**
+     Initializes a `Where` clause that compares equality to `nil`
+     
+     - parameter keyPath: the keyPath to compare with
+     - parameter value: the arguments for the `==` operator
+     */
+    public init(_ keyPath: KeyPath, isEqualTo value: Void?) {
+        
+        self.init(NSPredicate(format: "\(keyPath) == nil"))
+    }
+    
     /**
      Initializes a `Where` clause that compares equality
      
      - parameter keyPath: the keyPath to compare with
      - parameter value: the arguments for the `==` operator
      */
-    public init(_ keyPath: KeyPath, isEqualTo value: NSObject?) {
+    public init<T: CoreStoreQueryableAttributeType>(_ keyPath: KeyPath, isEqualTo value: T?) {
         
-        self.init(value == nil
-            ? NSPredicate(format: "\(keyPath) == nil")
-            : NSPredicate(format: "\(keyPath) == %@", argumentArray: [value!]))
-    }
-    
-    /**
-     Initializes a `Where` clause that compares membership
-     
-     - parameter keyPath: the keyPath to compare with
-     - parameter list: the array to check membership of
-     */
-    public init(_ keyPath: KeyPath, isMemberOf list: [NSObject]) {
-        
-        self.init(NSPredicate(format: "\(keyPath) IN %@", list))
+        switch value {
+            
+        case nil,
+             is NSNull:
+            self.init(NSPredicate(format: "\(keyPath) == nil"))
+            
+        case let value?:
+            self.init(NSPredicate(format: "\(keyPath) == %@", argumentArray: [value.cs_toQueryableNativeType()]))
+        }
     }
     
     /**
@@ -125,9 +139,9 @@ public struct Where: FetchClause, QueryClause, DeleteClause, Hashable {
      - parameter keyPath: the keyPath to compare with
      - parameter list: the sequence to check membership of
      */
-    public init<S: SequenceType where S.Generator.Element: NSObject>(_ keyPath: KeyPath, isMemberOf list: S) {
+    public init<S: Sequence>(_ keyPath: KeyPath, isMemberOf list: S) where S.Iterator.Element: CoreStoreQueryableAttributeType {
         
-        self.init(NSPredicate(format: "\(keyPath) IN %@", Array(list) as NSArray))
+        self.init(NSPredicate(format: "\(keyPath) IN %@", list.map({ $0.cs_toQueryableNativeType() }) as NSArray))
     }
     
     /**
@@ -143,13 +157,13 @@ public struct Where: FetchClause, QueryClause, DeleteClause, Hashable {
     
     // MARK: FetchClause, QueryClause, DeleteClause
     
-    public func applyToFetchRequest(fetchRequest: NSFetchRequest) {
+    public func applyToFetchRequest<ResultType: NSFetchRequestResult>(_ fetchRequest: NSFetchRequest<ResultType>) {
         
-        if let predicate = fetchRequest.predicate where predicate != self.predicate {
+        if let predicate = fetchRequest.predicate, predicate != self.predicate {
             
             CoreStore.log(
-                .Warning,
-                message: "An existing predicate for the \(cs_typeName(NSFetchRequest)) was overwritten by \(cs_typeName(self)) query clause."
+                .warning,
+                message: "An existing predicate for the \(cs_typeName(fetchRequest)) was overwritten by \(cs_typeName(self)) query clause."
             )
         }
         
@@ -157,6 +171,14 @@ public struct Where: FetchClause, QueryClause, DeleteClause, Hashable {
     }
     
     
+    // MARK: Equatable
+    
+    public static func == (lhs: Where, rhs: Where) -> Bool {
+        
+        return lhs.predicate == rhs.predicate
+    }
+    
+    
     // MARK: Hashable
     
     public var hashValue: Int {
@@ -164,12 +186,3 @@ public struct Where: FetchClause, QueryClause, DeleteClause, Hashable {
         return self.predicate.hashValue
     }
 }
-
-
-// MARK: - Where: Equatable
-
-@warn_unused_result
-public func == (lhs: Where, rhs: Where) -> Bool {
-    
-    return lhs.predicate == rhs.predicate
-}

Sources/Fetching and Querying/CoreStore+Querying.swift

@@ -37,8 +37,7 @@ public extension CoreStore {
      - parameter object: a reference to the object created/fetched outside the `DataStack`
      - returns: the `NSManagedObject` instance if the object exists in the `DataStack`, or `nil` if not found.
      */
-    @warn_unused_result
-    public static func fetchExisting<T: NSManagedObject>(object: T) -> T? {
+    public static func fetchExisting<T: NSManagedObject>(_ object: T) -> T? {
         
         return self.defaultStack.fetchExisting(object)
     }
@@ -49,8 +48,7 @@ public extension CoreStore {
      - parameter objectID: the `NSManagedObjectID` for the object
      - returns: the `NSManagedObject` instance if the object exists in the `DataStack`, or `nil` if not found.
      */
-    @warn_unused_result
-    public static func fetchExisting<T: NSManagedObject>(objectID: NSManagedObjectID) -> T? {
+    public static func fetchExisting<T: NSManagedObject>(_ objectID: NSManagedObjectID) -> T? {
         
         return self.defaultStack.fetchExisting(objectID)
     }
@@ -61,8 +59,7 @@ public extension CoreStore {
      - parameter objects: an array of `NSManagedObject`s created/fetched outside the `DataStack`
      - returns: the `NSManagedObject` array for objects that exists in the `DataStack`
      */
-    @warn_unused_result
-    public static func fetchExisting<T: NSManagedObject, S: SequenceType where S.Generator.Element == T>(objects: S) -> [T] {
+    public static func fetchExisting<T: NSManagedObject, S: Sequence>(_ objects: S) -> [T] where S.Iterator.Element == T {
         
         return self.defaultStack.fetchExisting(objects)
     }
@@ -73,8 +70,7 @@ public extension CoreStore {
      - parameter objectIDs: the `NSManagedObjectID` array for the objects
      - returns: the `NSManagedObject` array for objects that exists in the `DataStack`
      */
-    @warn_unused_result
-    public static func fetchExisting<T: NSManagedObject, S: SequenceType where S.Generator.Element == NSManagedObjectID>(objectIDs: S) -> [T] {
+    public static func fetchExisting<T: NSManagedObject, S: Sequence>(_ objectIDs: S) -> [T] where S.Iterator.Element == NSManagedObjectID {
         
         return self.defaultStack.fetchExisting(objectIDs)
     }
@@ -86,8 +82,7 @@ public extension CoreStore {
      - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
      - returns: the first `NSManagedObject` instance that satisfies the specified `FetchClause`s
      */
-    @warn_unused_result
-    public static func fetchOne<T: NSManagedObject>(from: From<T>, _ fetchClauses: FetchClause...) -> T? {
+    public static func fetchOne<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> T? {
         
         return self.defaultStack.fetchOne(from, fetchClauses)
     }
@@ -99,8 +94,7 @@ public extension CoreStore {
      - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
      - returns: the first `NSManagedObject` instance that satisfies the specified `FetchClause`s
      */
-    @warn_unused_result
-    public static func fetchOne<T: NSManagedObject>(from: From<T>, _ fetchClauses: [FetchClause]) -> T? {
+    public static func fetchOne<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> T? {
         
         return self.defaultStack.fetchOne(from, fetchClauses)
     }
@@ -112,8 +106,7 @@ public extension CoreStore {
      - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
      - returns: all `NSManagedObject` instances that satisfy the specified `FetchClause`s
      */
-    @warn_unused_result
-    public static func fetchAll<T: NSManagedObject>(from: From<T>, _ fetchClauses: FetchClause...) -> [T]? {
+    public static func fetchAll<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> [T]? {
         
         return self.defaultStack.fetchAll(from, fetchClauses)
     }
@@ -125,8 +118,7 @@ public extension CoreStore {
      - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
      - returns: all `NSManagedObject` instances that satisfy the specified `FetchClause`s
      */
-    @warn_unused_result
-    public static func fetchAll<T: NSManagedObject>(from: From<T>, _ fetchClauses: [FetchClause]) -> [T]? {
+    public static func fetchAll<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> [T]? {
         
         return self.defaultStack.fetchAll(from, fetchClauses)
     }
@@ -138,8 +130,7 @@ public extension CoreStore {
      - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
      - returns: the number `NSManagedObject`s that satisfy the specified `FetchClause`s
      */
-    @warn_unused_result
-    public static func fetchCount<T: NSManagedObject>(from: From<T>, _ fetchClauses: FetchClause...) -> Int? {
+    public static func fetchCount<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> Int? {
         
         return self.defaultStack.fetchCount(from, fetchClauses)
     }
@@ -151,8 +142,7 @@ public extension CoreStore {
      - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
      - returns: the number `NSManagedObject`s that satisfy the specified `FetchClause`s
      */
-    @warn_unused_result
-    public static func fetchCount<T: NSManagedObject>(from: From<T>, _ fetchClauses: [FetchClause]) -> Int? {
+    public static func fetchCount<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> Int? {
         
         return self.defaultStack.fetchCount(from, fetchClauses)
     }
@@ -164,8 +154,7 @@ public extension CoreStore {
      - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
      - returns: the `NSManagedObjectID` for the first `NSManagedObject` that satisfies the specified `FetchClause`s
      */
-    @warn_unused_result
-    public static func fetchObjectID<T: NSManagedObject>(from: From<T>, _ fetchClauses: FetchClause...) -> NSManagedObjectID? {
+    public static func fetchObjectID<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> NSManagedObjectID? {
         
         return self.defaultStack.fetchObjectID(from, fetchClauses)
     }
@@ -177,8 +166,7 @@ public extension CoreStore {
      - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
      - returns: the `NSManagedObjectID` for the first `NSManagedObject` that satisfies the specified `FetchClause`s
      */
-    @warn_unused_result
-    public static func fetchObjectID<T: NSManagedObject>(from: From<T>, _ fetchClauses: [FetchClause]) -> NSManagedObjectID? {
+    public static func fetchObjectID<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> NSManagedObjectID? {
         
         return self.defaultStack.fetchObjectID(from, fetchClauses)
     }
@@ -190,8 +178,7 @@ public extension CoreStore {
      - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
      - returns: the `NSManagedObjectID` for all `NSManagedObject`s that satisfy the specified `FetchClause`s
      */
-    @warn_unused_result
-    public static func fetchObjectIDs<T: NSManagedObject>(from: From<T>, _ fetchClauses: FetchClause...) -> [NSManagedObjectID]? {
+    public static func fetchObjectIDs<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> [NSManagedObjectID]? {
         
         return self.defaultStack.fetchObjectIDs(from, fetchClauses)
     }
@@ -203,8 +190,7 @@ public extension CoreStore {
      - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
      - returns: the `NSManagedObjectID` for all `NSManagedObject`s that satisfy the specified `FetchClause`s
      */
-    @warn_unused_result
-    public static func fetchObjectIDs<T: NSManagedObject>(from: From<T>, _ fetchClauses: [FetchClause]) -> [NSManagedObjectID]? {
+    public static func fetchObjectIDs<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> [NSManagedObjectID]? {
         
         return self.defaultStack.fetchObjectIDs(from, fetchClauses)
     }
@@ -219,8 +205,7 @@ public extension CoreStore {
      - parameter queryClauses: a series of `QueryClause` instances for the query request. Accepts `Where`, `OrderBy`, `GroupBy`, and `Tweak` clauses.
      - returns: the result of the the query. The type of the return value is specified by the generic type of the `Select<U>` parameter.
      */
-    @warn_unused_result
-    public static func queryValue<T: NSManagedObject, U: SelectValueResultType>(from: From<T>, _ selectClause: Select<U>, _ queryClauses: QueryClause...) -> U? {
+    public static func queryValue<T: NSManagedObject, U: SelectValueResultType>(_ from: From<T>, _ selectClause: Select<U>, _ queryClauses: QueryClause...) -> U? {
         
         return self.defaultStack.queryValue(from, selectClause, queryClauses)
     }
@@ -235,8 +220,7 @@ public extension CoreStore {
      - parameter queryClauses: a series of `QueryClause` instances for the query request. Accepts `Where`, `OrderBy`, `GroupBy`, and `Tweak` clauses.
      - returns: the result of the the query. The type of the return value is specified by the generic type of the `Select<U>` parameter.
      */
-    @warn_unused_result
-    public static func queryValue<T: NSManagedObject, U: SelectValueResultType>(from: From<T>, _ selectClause: Select<U>, _ queryClauses: [QueryClause]) -> U? {
+    public static func queryValue<T: NSManagedObject, U: SelectValueResultType>(_ from: From<T>, _ selectClause: Select<U>, _ queryClauses: [QueryClause]) -> U? {
         
         return self.defaultStack.queryValue(from, selectClause, queryClauses)
     }
@@ -251,8 +235,7 @@ public extension CoreStore {
      - parameter queryClauses: a series of `QueryClause` instances for the query request. Accepts `Where`, `OrderBy`, `GroupBy`, and `Tweak` clauses.
      - returns: the result of the the query. The type of the return value is specified by the generic type of the `Select<U>` parameter.
      */
-    @warn_unused_result
-    public static func queryAttributes<T: NSManagedObject>(from: From<T>, _ selectClause: Select<NSDictionary>, _ queryClauses: QueryClause...) -> [[NSString: AnyObject]]? {
+    public static func queryAttributes<T: NSManagedObject>(_ from: From<T>, _ selectClause: Select<NSDictionary>, _ queryClauses: QueryClause...) -> [[String: Any]]? {
         
         return self.defaultStack.queryAttributes(from, selectClause, queryClauses)
     }
@@ -267,8 +250,7 @@ public extension CoreStore {
      - parameter queryClauses: a series of `QueryClause` instances for the query request. Accepts `Where`, `OrderBy`, `GroupBy`, and `Tweak` clauses.
      - returns: the result of the the query. The type of the return value is specified by the generic type of the `Select<U>` parameter.
      */
-    @warn_unused_result
-    public static func queryAttributes<T: NSManagedObject>(from: From<T>, _ selectClause: Select<NSDictionary>, _ queryClauses: [QueryClause]) -> [[NSString: AnyObject]]? {
+    public static func queryAttributes<T: NSManagedObject>(_ from: From<T>, _ selectClause: Select<NSDictionary>, _ queryClauses: [QueryClause]) -> [[String: Any]]? {
         
         return self.defaultStack.queryAttributes(from, selectClause, queryClauses)
     }

Sources/Fetching and Querying/CoreStoreQueryableAttributeType.swift

@@ -0,0 +1,272 @@
+//
+//  CoreStoreQueryableAttributeType.swift
+//  CoreStore
+//
+//  Copyright © 2017 John Rommel Estropia
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all
+//  copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+//  SOFTWARE.
+//
+
+import Foundation
+import CoreGraphics
+import CoreData
+
+
+// MARK: - CoreStoreQueryableAttributeType
+
+public protocol CoreStoreQueryableAttributeType: Hashable {
+    
+    associatedtype QueryableNativeType: CoreDataNativeType
+    
+    func cs_toQueryableNativeType() -> QueryableNativeType
+}
+
+
+// MARK: - NSManagedObject
+
+extension NSManagedObject: CoreStoreQueryableAttributeType {
+    
+    public typealias QueryableNativeType = NSManagedObjectID
+    
+    public func cs_toQueryableNativeType() -> QueryableNativeType {
+        
+        return self.objectID
+    }
+}
+
+
+// MARK: - NSManagedObjectID
+
+extension NSManagedObjectID: CoreStoreQueryableAttributeType {
+    
+    public typealias QueryableNativeType = NSManagedObjectID
+    
+    public func cs_toQueryableNativeType() -> QueryableNativeType {
+        
+        return self
+    }
+}
+
+
+// MARK: - NSNumber
+
+extension NSNumber: CoreStoreQueryableAttributeType {
+    
+    public typealias QueryableNativeType = NSNumber
+    
+    public func cs_toQueryableNativeType() -> QueryableNativeType {
+        
+        return self
+    }
+}
+
+
+// MARK: - NSString
+
+extension NSString: CoreStoreQueryableAttributeType {
+    
+    public typealias QueryableNativeType = NSString
+    
+    public func cs_toQueryableNativeType() -> QueryableNativeType {
+        
+        return self
+    }
+}
+
+
+// MARK: - NSDate
+
+extension NSDate: CoreStoreQueryableAttributeType {
+    
+    public typealias QueryableNativeType = NSDate
+    
+    public func cs_toQueryableNativeType() -> QueryableNativeType {
+        
+        return self
+    }
+}
+
+
+// MARK: - NSData
+
+extension NSData: CoreStoreQueryableAttributeType {
+    
+    public typealias QueryableNativeType = NSData
+    
+    public func cs_toQueryableNativeType() -> QueryableNativeType {
+        
+        return self
+    }
+}
+
+
+// MARK: - Bool
+
+extension Bool: CoreStoreQueryableAttributeType {
+    
+    public typealias QueryableNativeType = NSNumber
+    
+    public func cs_toQueryableNativeType() -> QueryableNativeType {
+        
+        return self as NSNumber
+    }
+}
+
+
+// MARK: - Int16
+
+extension Int16: CoreStoreQueryableAttributeType {
+    
+    public typealias QueryableNativeType = NSNumber
+    
+    public func cs_toQueryableNativeType() -> QueryableNativeType {
+        
+        return self as NSNumber
+    }
+}
+
+
+// MARK: - Int32
+
+extension Int32: CoreStoreQueryableAttributeType {
+    
+    public typealias QueryableNativeType = NSNumber
+    
+    public func cs_toQueryableNativeType() -> QueryableNativeType {
+        
+        return self as NSNumber
+    }
+}
+
+
+// MARK: - Int64
+
+extension Int64: CoreStoreQueryableAttributeType {
+    
+    public typealias QueryableNativeType = NSNumber
+    
+    public func cs_toQueryableNativeType() -> QueryableNativeType {
+        
+        return self as NSNumber
+    }
+}
+
+
+// MARK: - Int
+
+extension Int: CoreStoreQueryableAttributeType {
+    
+    public typealias QueryableNativeType = NSNumber
+    
+    public func cs_toQueryableNativeType() -> QueryableNativeType {
+        
+        return self as NSNumber
+    }
+}
+
+
+// MARK: - Double
+
+extension Double: CoreStoreQueryableAttributeType {
+    
+    public typealias QueryableNativeType = NSNumber
+    
+    public func cs_toQueryableNativeType() -> QueryableNativeType {
+        
+        return self as NSNumber
+    }
+}
+
+
+// MARK: - Float
+
+extension Float: CoreStoreQueryableAttributeType {
+    
+    public typealias QueryableNativeType = NSNumber
+    
+    public func cs_toQueryableNativeType() -> QueryableNativeType {
+        
+        return self as NSNumber
+    }
+}
+
+
+// MARK: - CGFloat
+
+extension CGFloat: CoreStoreQueryableAttributeType {
+    
+    public typealias QueryableNativeType = NSNumber
+    
+    public func cs_toQueryableNativeType() -> QueryableNativeType {
+        
+        return self as NSNumber
+    }
+}
+
+
+// MARK: - Date
+
+extension Date: CoreStoreQueryableAttributeType {
+    
+    public typealias QueryableNativeType = NSDate
+    
+    public func cs_toQueryableNativeType() -> QueryableNativeType {
+        
+        return self as NSDate
+    }
+}
+
+
+// MARK: - String
+
+extension String: CoreStoreQueryableAttributeType {
+    
+    public typealias QueryableNativeType = NSString
+    
+    public func cs_toQueryableNativeType() -> QueryableNativeType {
+        
+        return self as NSString
+    }
+}
+
+
+// MARK: - Data
+
+extension Data: CoreStoreQueryableAttributeType {
+    
+    public typealias QueryableNativeType = NSData
+    
+    public func cs_toQueryableNativeType() -> QueryableNativeType {
+        
+        return self as NSData
+    }
+}
+
+
+// MARK: - NSNull
+
+extension NSNull: CoreStoreQueryableAttributeType {
+    
+    public typealias QueryableNativeType = NSNull
+    
+    public func cs_toQueryableNativeType() -> QueryableNativeType {
+        
+        return self
+    }
+}

Sources/Fetching and Querying/DataStack+Querying.swift

@@ -25,14 +25,13 @@
 
 import Foundation
 import CoreData
-#if USE_FRAMEWORKS
-    import GCDKit
-#endif
 
 
 // MARK: - DataStack
 
-public extension DataStack {
+extension DataStack: FetchableSource, QueryableSource {
+    
+    // MARK: FetchableSource
     
     /**
      Fetches the `NSManagedObject` instance in the `DataStack`'s context from a reference created from a transaction or from a different managed object context.
@@ -40,17 +39,9 @@ public extension DataStack {
      - parameter object: a reference to the object created/fetched outside the `DataStack`
      - returns: the `NSManagedObject` instance if the object exists in the `DataStack`, or `nil` if not found.
      */
-    @warn_unused_result
-    public func fetchExisting<T: NSManagedObject>(object: T) -> T? {
+    public func fetchExisting<T: NSManagedObject>(_ object: T) -> T? {
         
-        do {
-            
-            return (try self.mainContext.existingObjectWithID(object.objectID) as! T)
-        }
-        catch _ {
-            
-            return nil
-        }
+        return self.mainContext.fetchExisting(object)
     }
     
     /**
@@ -59,17 +50,9 @@ public extension DataStack {
      - parameter objectID: the `NSManagedObjectID` for the object
      - returns: the `NSManagedObject` instance if the object exists in the `DataStack`, or `nil` if not found.
      */
-    @warn_unused_result
-    public func fetchExisting<T: NSManagedObject>(objectID: NSManagedObjectID) -> T? {
+    public func fetchExisting<T: NSManagedObject>(_ objectID: NSManagedObjectID) -> T? {
         
-        do {
-            
-            return (try self.mainContext.existingObjectWithID(objectID) as! T)
-        }
-        catch _ {
-            
-            return nil
-        }
+        return self.mainContext.fetchExisting(objectID)
     }
     
     /**
@@ -78,10 +61,9 @@ public extension DataStack {
      - parameter objects: an array of `NSManagedObject`s created/fetched outside the `DataStack`
      - returns: the `NSManagedObject` array for objects that exists in the `DataStack`
      */
-    @warn_unused_result
-    public func fetchExisting<T: NSManagedObject, S: SequenceType where S.Generator.Element == T>(objects: S) -> [T] {
+    public func fetchExisting<T: NSManagedObject, S: Sequence>(_ objects: S) -> [T] where S.Iterator.Element == T {
         
-        return objects.flatMap { (try? self.mainContext.existingObjectWithID($0.objectID)) as? T }
+        return self.mainContext.fetchExisting(objects)
     }
     
     /**
@@ -90,10 +72,9 @@ public extension DataStack {
      - parameter objectIDs: the `NSManagedObjectID` array for the objects
      - returns: the `NSManagedObject` array for objects that exists in the `DataStack`
      */
-    @warn_unused_result
-    public func fetchExisting<T: NSManagedObject, S: SequenceType where S.Generator.Element == NSManagedObjectID>(objectIDs: S) -> [T] {
+    public func fetchExisting<T: NSManagedObject, S: Sequence>(_ objectIDs: S) -> [T] where S.Iterator.Element == NSManagedObjectID {
         
-        return objectIDs.flatMap { (try? self.mainContext.existingObjectWithID($0)) as? T }
+        return self.mainContext.fetchExisting(objectIDs)
     }
     
     /**
@@ -103,11 +84,10 @@ public extension DataStack {
      - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
      - returns: the first `NSManagedObject` instance that satisfies the specified `FetchClause`s
      */
-    @warn_unused_result
-    public func fetchOne<T: NSManagedObject>(from: From<T>, _ fetchClauses: FetchClause...) -> T? {
+    public func fetchOne<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> T? {
         
         CoreStore.assert(
-            NSThread.isMainThread(),
+            Thread.isMainThread,
             "Attempted to fetch from a \(cs_typeName(self)) outside the main thread."
         )
         return self.mainContext.fetchOne(from, fetchClauses)
@@ -120,11 +100,10 @@ public extension DataStack {
      - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
      - returns: the first `NSManagedObject` instance that satisfies the specified `FetchClause`s
      */
-    @warn_unused_result
-    public func fetchOne<T: NSManagedObject>(from: From<T>, _ fetchClauses: [FetchClause]) -> T? {
+    public func fetchOne<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> T? {
         
         CoreStore.assert(
-            NSThread.isMainThread(),
+            Thread.isMainThread,
             "Attempted to fetch from a \(cs_typeName(self)) outside the main thread."
         )
         return self.mainContext.fetchOne(from, fetchClauses)
@@ -137,11 +116,10 @@ public extension DataStack {
      - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
      - returns: all `NSManagedObject` instances that satisfy the specified `FetchClause`s
      */
-    @warn_unused_result
-    public func fetchAll<T: NSManagedObject>(from: From<T>, _ fetchClauses: FetchClause...) -> [T]? {
+    public func fetchAll<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> [T]? {
         
         CoreStore.assert(
-            NSThread.isMainThread(),
+            Thread.isMainThread,
             "Attempted to fetch from a \(cs_typeName(self)) outside the main thread."
         )
         return self.mainContext.fetchAll(from, fetchClauses)
@@ -154,11 +132,10 @@ public extension DataStack {
      - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
      - returns: all `NSManagedObject` instances that satisfy the specified `FetchClause`s
      */
-    @warn_unused_result
-    public func fetchAll<T: NSManagedObject>(from: From<T>, _ fetchClauses: [FetchClause]) -> [T]? {
+    public func fetchAll<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> [T]? {
         
         CoreStore.assert(
-            NSThread.isMainThread(),
+            Thread.isMainThread,
             "Attempted to fetch from a \(cs_typeName(self)) outside the main thread."
         )
         return self.mainContext.fetchAll(from, fetchClauses)
@@ -171,11 +148,10 @@ public extension DataStack {
      - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
      - returns: the number `NSManagedObject`s that satisfy the specified `FetchClause`s
      */
-    @warn_unused_result
-    public func fetchCount<T: NSManagedObject>(from: From<T>, _ fetchClauses: FetchClause...) -> Int? {
+    public func fetchCount<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> Int? {
         
         CoreStore.assert(
-            NSThread.isMainThread(),
+            Thread.isMainThread,
             "Attempted to fetch from a \(cs_typeName(self)) outside the main thread."
         )
         return self.mainContext.fetchCount(from, fetchClauses)
@@ -188,11 +164,10 @@ public extension DataStack {
      - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
      - returns: the number `NSManagedObject`s that satisfy the specified `FetchClause`s
      */
-    @warn_unused_result
-    public func fetchCount<T: NSManagedObject>(from: From<T>, _ fetchClauses: [FetchClause]) -> Int? {
+    public func fetchCount<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> Int? {
         
         CoreStore.assert(
-            NSThread.isMainThread(),
+            Thread.isMainThread,
             "Attempted to fetch from a \(cs_typeName(self)) outside the main thread."
         )
         return self.mainContext.fetchCount(from, fetchClauses)
@@ -205,11 +180,10 @@ public extension DataStack {
      - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
      - returns: the `NSManagedObjectID` for the first `NSManagedObject` that satisfies the specified `FetchClause`s
      */
-    @warn_unused_result
-    public func fetchObjectID<T: NSManagedObject>(from: From<T>, _ fetchClauses: FetchClause...) -> NSManagedObjectID? {
+    public func fetchObjectID<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> NSManagedObjectID? {
         
         CoreStore.assert(
-            NSThread.isMainThread(),
+            Thread.isMainThread,
             "Attempted to fetch from a \(cs_typeName(self)) outside the main thread."
         )
         return self.mainContext.fetchObjectID(from, fetchClauses)
@@ -222,11 +196,10 @@ public extension DataStack {
      - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
      - returns: the `NSManagedObjectID` for the first `NSManagedObject` that satisfies the specified `FetchClause`s
      */
-    @warn_unused_result
-    public func fetchObjectID<T: NSManagedObject>(from: From<T>, _ fetchClauses: [FetchClause]) -> NSManagedObjectID? {
+    public func fetchObjectID<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> NSManagedObjectID? {
         
         CoreStore.assert(
-            NSThread.isMainThread(),
+            Thread.isMainThread,
             "Attempted to fetch from a \(cs_typeName(self)) outside the main thread."
         )
         return self.mainContext.fetchObjectID(from, fetchClauses)
@@ -239,11 +212,10 @@ public extension DataStack {
      - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
      - returns: the `NSManagedObjectID` for all `NSManagedObject`s that satisfy the specified `FetchClause`s
      */
-    @warn_unused_result
-    public func fetchObjectIDs<T: NSManagedObject>(from: From<T>, _ fetchClauses: FetchClause...) -> [NSManagedObjectID]? {
+    public func fetchObjectIDs<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> [NSManagedObjectID]? {
         
         CoreStore.assert(
-            NSThread.isMainThread(),
+            Thread.isMainThread,
             "Attempted to fetch from a \(cs_typeName(self)) outside the main thread."
         )
         return self.mainContext.fetchObjectIDs(from, fetchClauses)
@@ -256,16 +228,18 @@ public extension DataStack {
      - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
      - returns: the `NSManagedObjectID` for all `NSManagedObject`s that satisfy the specified `FetchClause`s
      */
-    @warn_unused_result
-    public func fetchObjectIDs<T: NSManagedObject>(from: From<T>, _ fetchClauses: [FetchClause]) -> [NSManagedObjectID]? {
+    public func fetchObjectIDs<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> [NSManagedObjectID]? {
         
         CoreStore.assert(
-            NSThread.isMainThread(),
+            Thread.isMainThread,
             "Attempted to fetch from a \(cs_typeName(self)) outside the main thread."
         )
         return self.mainContext.fetchObjectIDs(from, fetchClauses)
     }
     
+    
+    // MARK: QueryableSource
+    
     /**
      Queries aggregate values as specified by the `QueryClause`s. Requires at least a `Select` clause, and optional `Where`, `OrderBy`, `GroupBy`, and `Tweak` clauses.
      
@@ -276,11 +250,10 @@ public extension DataStack {
      - parameter queryClauses: a series of `QueryClause` instances for the query request. Accepts `Where`, `OrderBy`, `GroupBy`, and `Tweak` clauses.
      - returns: the result of the the query. The type of the return value is specified by the generic type of the `Select<U>` parameter.
      */
-    @warn_unused_result
-    public func queryValue<T: NSManagedObject, U: SelectValueResultType>(from: From<T>, _ selectClause: Select<U>, _ queryClauses: QueryClause...) -> U? {
+    public func queryValue<T: NSManagedObject, U: SelectValueResultType>(_ from: From<T>, _ selectClause: Select<U>, _ queryClauses: QueryClause...) -> U? {
         
         CoreStore.assert(
-            NSThread.isMainThread(),
+            Thread.isMainThread,
             "Attempted to query from a \(cs_typeName(self)) outside the main thread."
         )
         return self.mainContext.queryValue(from, selectClause, queryClauses)
@@ -296,11 +269,10 @@ public extension DataStack {
      - parameter queryClauses: a series of `QueryClause` instances for the query request. Accepts `Where`, `OrderBy`, `GroupBy`, and `Tweak` clauses.
      - returns: the result of the the query. The type of the return value is specified by the generic type of the `Select<U>` parameter.
      */
-    @warn_unused_result
-    public func queryValue<T: NSManagedObject, U: SelectValueResultType>(from: From<T>, _ selectClause: Select<U>, _ queryClauses: [QueryClause]) -> U? {
+    public func queryValue<T: NSManagedObject, U: SelectValueResultType>(_ from: From<T>, _ selectClause: Select<U>, _ queryClauses: [QueryClause]) -> U? {
         
         CoreStore.assert(
-            NSThread.isMainThread(),
+            Thread.isMainThread,
             "Attempted to query from a \(cs_typeName(self)) outside the main thread."
         )
         return self.mainContext.queryValue(from, selectClause, queryClauses)
@@ -316,11 +288,10 @@ public extension DataStack {
      - parameter queryClauses: a series of `QueryClause` instances for the query request. Accepts `Where`, `OrderBy`, `GroupBy`, and `Tweak` clauses.
      - returns: the result of the the query. The type of the return value is specified by the generic type of the `Select<U>` parameter.
      */
-    @warn_unused_result
-    public func queryAttributes<T: NSManagedObject>(from: From<T>, _ selectClause: Select<NSDictionary>, _ queryClauses: QueryClause...) -> [[NSString: AnyObject]]? {
+    public func queryAttributes<T: NSManagedObject>(_ from: From<T>, _ selectClause: Select<NSDictionary>, _ queryClauses: QueryClause...) -> [[String: Any]]? {
         
         CoreStore.assert(
-            NSThread.isMainThread(),
+            Thread.isMainThread,
             "Attempted to query from a \(cs_typeName(self)) outside the main thread."
         )
         return self.mainContext.queryAttributes(from, selectClause, queryClauses)
@@ -336,13 +307,23 @@ public extension DataStack {
      - parameter queryClauses: a series of `QueryClause` instances for the query request. Accepts `Where`, `OrderBy`, `GroupBy`, and `Tweak` clauses.
      - returns: the result of the the query. The type of the return value is specified by the generic type of the `Select<U>` parameter.
      */
-    @warn_unused_result
-    public func queryAttributes<T: NSManagedObject>(from: From<T>, _ selectClause: Select<NSDictionary>, _ queryClauses: [QueryClause]) -> [[NSString: AnyObject]]? {
+    public func queryAttributes<T: NSManagedObject>(_ from: From<T>, _ selectClause: Select<NSDictionary>, _ queryClauses: [QueryClause]) -> [[String: Any]]? {
         
         CoreStore.assert(
-            NSThread.isMainThread(),
+            Thread.isMainThread,
             "Attempted to query from a \(cs_typeName(self)) outside the main thread."
         )
         return self.mainContext.queryAttributes(from, selectClause, queryClauses)
     }
+    
+    
+    // MARK: FetchableSource, QueryableSource
+    
+    /**
+     The internal `NSManagedObjectContext` managed by this instance. Using this context directly should typically be avoided, and is provided by CoreStore only for extremely specialized cases.
+     */
+    public func internalContext() -> NSManagedObjectContext {
+        
+        return self.mainContext
+    }
 }

Sources/Fetching and Querying/FetchableSource.swift

@@ -0,0 +1,163 @@
+//
+//  FetchableSource.swift
+//  CoreStore
+//
+//  Copyright © 2016 John Rommel Estropia
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all
+//  copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+//  SOFTWARE.
+//
+
+import Foundation
+import CoreData
+
+
+// MARK: - FetchableSource
+
+/**
+ Encapsulates containers which manages an internal `NSManagedObjectContext`, such as `DataStack`s and transactions, that can be used for fetching objects. CoreStore provides implementations for this protocol and should be used as a read-only abstraction.
+ */
+public protocol FetchableSource: class {
+    
+    /**
+     Fetches the `NSManagedObject` instance in the `FetchableSource`'s context from a reference created from another managed object context.
+     
+     - parameter object: a reference to the object created/fetched outside the `FetchableSource`'s context
+     - returns: the `NSManagedObject` instance if the object exists in the `FetchableSource`'s context, or `nil` if not found.
+     */
+    func fetchExisting<T: NSManagedObject>(_ object: T) -> T?
+    
+    /**
+     Fetches the `NSManagedObject` instance in the `FetchableSource`'s context from an `NSManagedObjectID`.
+     
+     - parameter objectID: the `NSManagedObjectID` for the object
+     - returns: the `NSManagedObject` instance if the object exists in the `FetchableSource`, or `nil` if not found.
+     */
+    func fetchExisting<T: NSManagedObject>(_ objectID: NSManagedObjectID) -> T?
+    
+    /**
+     Fetches the `NSManagedObject` instances in the `FetchableSource`'s context from references created from another managed object context.
+
+     - parameter objects: an array of `NSManagedObject`s created/fetched outside the `FetchableSource`'s context
+     - returns: the `NSManagedObject` array for objects that exists in the `FetchableSource`
+     */
+    func fetchExisting<T: NSManagedObject, S: Sequence>(_ objects: S) -> [T] where S.Iterator.Element == T
+
+    /**
+     Fetches the `NSManagedObject` instances in the `FetchableSource`'s context from a list of `NSManagedObjectID`.
+
+     - parameter objectIDs: the `NSManagedObjectID` array for the objects
+     - returns: the `NSManagedObject` array for objects that exists in the `FetchableSource`'s context
+     */
+    func fetchExisting<T: NSManagedObject, S: Sequence>(_ objectIDs: S) -> [T] where S.Iterator.Element == NSManagedObjectID
+
+    /**
+     Fetches the first `NSManagedObject` instance that satisfies the specified `FetchClause`s. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
+
+     - parameter from: a `From` clause indicating the entity type
+     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
+     - returns: the first `NSManagedObject` instance that satisfies the specified `FetchClause`s
+     */
+    func fetchOne<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> T?
+
+    /**
+     Fetches the first `NSManagedObject` instance that satisfies the specified `FetchClause`s. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
+
+     - parameter from: a `From` clause indicating the entity type
+     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
+     - returns: the first `NSManagedObject` instance that satisfies the specified `FetchClause`s
+     */
+    func fetchOne<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> T?
+
+    /**
+     Fetches all `NSManagedObject` instances that satisfy the specified `FetchClause`s. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
+
+     - parameter from: a `From` clause indicating the entity type
+     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
+     - returns: all `NSManagedObject` instances that satisfy the specified `FetchClause`s
+     */
+    func fetchAll<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> [T]?
+
+    /**
+     Fetches all `NSManagedObject` instances that satisfy the specified `FetchClause`s. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
+
+     - parameter from: a `From` clause indicating the entity type
+     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
+     - returns: all `NSManagedObject` instances that satisfy the specified `FetchClause`s
+     */
+    func fetchAll<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> [T]?
+
+    /**
+     Fetches the number of `NSManagedObject`s that satisfy the specified `FetchClause`s. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
+
+     - parameter from: a `From` clause indicating the entity type
+     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
+     - returns: the number `NSManagedObject`s that satisfy the specified `FetchClause`s
+     */
+    func fetchCount<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> Int?
+
+    /**
+     Fetches the number of `NSManagedObject`s that satisfy the specified `FetchClause`s. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
+
+     - parameter from: a `From` clause indicating the entity type
+     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
+     - returns: the number `NSManagedObject`s that satisfy the specified `FetchClause`s
+     */
+    func fetchCount<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> Int?
+
+    /**
+     Fetches the `NSManagedObjectID` for the first `NSManagedObject` that satisfies the specified `FetchClause`s. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
+
+     - parameter from: a `From` clause indicating the entity type
+     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
+     - returns: the `NSManagedObjectID` for the first `NSManagedObject` that satisfies the specified `FetchClause`s
+     */
+    func fetchObjectID<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> NSManagedObjectID?
+
+    /**
+     Fetches the `NSManagedObjectID` for the first `NSManagedObject` that satisfies the specified `FetchClause`s. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
+
+     - parameter from: a `From` clause indicating the entity type
+     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
+     - returns: the `NSManagedObjectID` for the first `NSManagedObject` that satisfies the specified `FetchClause`s
+     */
+    func fetchObjectID<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> NSManagedObjectID?
+
+    /**
+     Fetches the `NSManagedObjectID` for all `NSManagedObject`s that satisfy the specified `FetchClause`s. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
+
+     - parameter from: a `From` clause indicating the entity type
+     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
+     - returns: the `NSManagedObjectID` for all `NSManagedObject`s that satisfy the specified `FetchClause`s
+     */
+    func fetchObjectIDs<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> [NSManagedObjectID]?
+
+    /**
+     Fetches the `NSManagedObjectID` for all `NSManagedObject`s that satisfy the specified `FetchClause`s. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
+
+     - parameter from: a `From` clause indicating the entity type
+     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
+     - returns: the `NSManagedObjectID` for all `NSManagedObject`s that satisfy the specified `FetchClause`s
+     */
+    func fetchObjectIDs<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> [NSManagedObjectID]?
+    
+    /**
+     The internal `NSManagedObjectContext` managed by this `FetchableSource`. Using this context directly should typically be avoided, and is provided by CoreStore only for extremely specialized cases.
+     */
+    func internalContext() -> NSManagedObjectContext
+}

Sources/Fetching and Querying/Protocol Clauses/ClauseTypes.swift

@@ -34,7 +34,7 @@ import CoreData
  */
 public protocol FetchClause {
     
-    func applyToFetchRequest(fetchRequest: NSFetchRequest)
+    func applyToFetchRequest<T: NSFetchRequestResult>(_ fetchRequest: NSFetchRequest<T>)
 }
 
 
@@ -45,7 +45,7 @@ public protocol FetchClause {
  */
 public protocol QueryClause {
     
-    func applyToFetchRequest(fetchRequest: NSFetchRequest)
+    func applyToFetchRequest<T: NSFetchRequestResult>(_ fetchRequest: NSFetchRequest<T>)
 }
 
 
@@ -56,5 +56,5 @@ public protocol QueryClause {
  */
 public protocol DeleteClause {
     
-    func applyToFetchRequest(fetchRequest: NSFetchRequest)
+    func applyToFetchRequest<T: NSFetchRequestResult>(_ fetchRequest: NSFetchRequest<T>)
 }

Sources/Fetching and Querying/QueryableSource.swift

@@ -0,0 +1,89 @@
+//
+//  QueryableSource.swift
+//  CoreStore
+//
+//  Copyright © 2016 John Rommel Estropia
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all
+//  copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+//  SOFTWARE.
+//
+
+import Foundation
+import CoreData
+
+
+// MARK: - QueryableSource
+
+/**
+ Encapsulates containers which manages an internal `NSManagedObjectContext`, such as `DataStack`s and transactions, that can be used for querying values. CoreStore provides implementations for this protocol and should be used as a read-only abstraction.
+ */
+public protocol QueryableSource: class {
+    
+    /**
+     Queries aggregate values as specified by the `QueryClause`s. Requires at least a `Select` clause, and optional `Where`, `OrderBy`, `GroupBy`, and `Tweak` clauses.
+
+     A "query" differs from a "fetch" in that it only retrieves values already stored in the persistent store. As such, values from unsaved transactions or contexts will not be incorporated in the query result.
+
+     - parameter from: a `From` clause indicating the entity type
+     - parameter selectClause: a `Select<U>` clause indicating the properties to fetch, and with the generic type indicating the return type.
+     - parameter queryClauses: a series of `QueryClause` instances for the query request. Accepts `Where`, `OrderBy`, `GroupBy`, and `Tweak` clauses.
+     - returns: the result of the the query. The type of the return value is specified by the generic type of the `Select<U>` parameter.
+     */
+    func queryValue<T: NSManagedObject, U: SelectValueResultType>(_ from: From<T>, _ selectClause: Select<U>, _ queryClauses: QueryClause...) -> U?
+
+    /**
+     Queries aggregate values as specified by the `QueryClause`s. Requires at least a `Select` clause, and optional `Where`, `OrderBy`, `GroupBy`, and `Tweak` clauses.
+
+     A "query" differs from a "fetch" in that it only retrieves values already stored in the persistent store. As such, values from unsaved transactions or contexts will not be incorporated in the query result.
+
+     - parameter from: a `From` clause indicating the entity type
+     - parameter selectClause: a `Select<U>` clause indicating the properties to fetch, and with the generic type indicating the return type.
+     - parameter queryClauses: a series of `QueryClause` instances for the query request. Accepts `Where`, `OrderBy`, `GroupBy`, and `Tweak` clauses.
+     - returns: the result of the the query. The type of the return value is specified by the generic type of the `Select<U>` parameter.
+     */
+    func queryValue<T: NSManagedObject, U: SelectValueResultType>(_ from: From<T>, _ selectClause: Select<U>, _ queryClauses: [QueryClause]) -> U?
+
+    /**
+     Queries a dictionary of attribute values as specified by the `QueryClause`s. Requires at least a `Select` clause, and optional `Where`, `OrderBy`, `GroupBy`, and `Tweak` clauses.
+
+     A "query" differs from a "fetch" in that it only retrieves values already stored in the persistent store. As such, values from unsaved transactions or contexts will not be incorporated in the query result.
+
+     - parameter from: a `From` clause indicating the entity type
+     - parameter selectClause: a `Select<U>` clause indicating the properties to fetch, and with the generic type indicating the return type.
+     - parameter queryClauses: a series of `QueryClause` instances for the query request. Accepts `Where`, `OrderBy`, `GroupBy`, and `Tweak` clauses.
+     - returns: the result of the the query. The type of the return value is specified by the generic type of the `Select<U>` parameter.
+     */
+    func queryAttributes<T: NSManagedObject>(_ from: From<T>, _ selectClause: Select<NSDictionary>, _ queryClauses: QueryClause...) -> [[String: Any]]?
+
+    /**
+     Queries a dictionary of attribute values as specified by the `QueryClause`s. Requires at least a `Select` clause, and optional `Where`, `OrderBy`, `GroupBy`, and `Tweak` clauses.
+
+     A "query" differs from a "fetch" in that it only retrieves values already stored in the persistent store. As such, values from unsaved transactions or contexts will not be incorporated in the query result.
+
+     - parameter from: a `From` clause indicating the entity type
+     - parameter selectClause: a `Select<U>` clause indicating the properties to fetch, and with the generic type indicating the return type.
+     - parameter queryClauses: a series of `QueryClause` instances for the query request. Accepts `Where`, `OrderBy`, `GroupBy`, and `Tweak` clauses.
+     - returns: the result of the the query. The type of the return value is specified by the generic type of the `Select<U>` parameter.
+     */
+    func queryAttributes<T: NSManagedObject>(_ from: From<T>, _ selectClause: Select<NSDictionary>, _ queryClauses: [QueryClause]) -> [[String: Any]]?
+    
+    /**
+     The internal `NSManagedObjectContext` managed by this `QueryableSource`. Using this context directly should typically be avoided, and is provided by CoreStore only for extremely specialized cases.
+     */
+    func internalContext() -> NSManagedObjectContext
+}

Sources/Importing/BaseDataTransaction+Importing.swift

@@ -36,27 +36,29 @@ public extension BaseDataTransaction {
      
      - parameter into: an `Into` clause specifying the entity type
      - parameter source: the object to import values from
-     - throws: an `ErrorType` thrown from any of the `ImportableObject` methods
+     - throws: an `Error` thrown from any of the `ImportableObject` methods
      - returns: the created `ImportableObject` instance, or `nil` if the import was ignored
      */
-    public func importObject<T where T: NSManagedObject, T: ImportableObject>(
-        into: Into<T>,
-        source: T.ImportSource) throws -> T? {
+    public func importObject<T>(
+        _ into: Into<T>,
+        source: T.ImportSource) throws -> T? where T: NSManagedObject, T: ImportableObject {
             
             CoreStore.assert(
                 self.isRunningInAllowedQueue(),
                 "Attempted to import an object of type \(cs_typeName(into.entityClass)) outside the transaction's designated queue."
             )
-            
-            return try cs_autoreleasepool {
+        
+            return try autoreleasepool {
                 
-                guard T.shouldInsertFromImportSource(source, inTransaction: self) else {
+                let entityType = into.entityClass as! T.Type
+                
+                guard entityType.shouldInsert(from: source, in: self) else {
                     
                     return nil
                 }
                 
                 let object = self.create(into)
-                try object.didInsertFromImportSource(source, inTransaction: self)
+                try object.didInsert(from: source, in: self)
                 return object
             }
     }
@@ -66,25 +68,25 @@ public extension BaseDataTransaction {
      
      - parameter object: the `NSManagedObject` to update
      - parameter source: the object to import values from
-     - throws: an `ErrorType` thrown from any of the `ImportableObject` methods
+     - throws: an `Error` thrown from any of the `ImportableObject` methods
      */
-    public func importObject<T where T: NSManagedObject, T: ImportableObject>(
-        object: T,
-        source: T.ImportSource) throws {
+    public func importObject<T>(
+        _ object: T,
+        source: T.ImportSource) throws where T: NSManagedObject, T: ImportableObject {
             
             CoreStore.assert(
                 self.isRunningInAllowedQueue(),
                 "Attempted to import an object of type \(cs_typeName(object)) outside the transaction's designated queue."
             )
             
-            try cs_autoreleasepool {
-                
-                guard T.shouldInsertFromImportSource(source, inTransaction: self) else {
+            try autoreleasepool {
+              
+                let entityType = type(of: object)
+                guard entityType.shouldInsert(from: source, in: self) else {
                     
                     return
                 }
-                
-                try object.didInsertFromImportSource(source, inTransaction: self)
+                try object.didInsert(from: source, in: self)
             }
     }
     
@@ -93,31 +95,31 @@ public extension BaseDataTransaction {
      
      - parameter into: an `Into` clause specifying the entity type
      - parameter sourceArray: the array of objects to import values from
-     - throws: an `ErrorType` thrown from any of the `ImportableObject` methods
+     - throws: an `Error` thrown from any of the `ImportableObject` methods
      - returns: the array of created `ImportableObject` instances
      */
-    public func importObjects<T, S: SequenceType where T: NSManagedObject, T: ImportableObject, S.Generator.Element == T.ImportSource>(
-        into: Into<T>,
-        sourceArray: S) throws -> [T] {
+    public func importObjects<T, S: Sequence>(
+        _ into: Into<T>,
+        sourceArray: S) throws -> [T] where T: NSManagedObject, T: ImportableObject, S.Iterator.Element == T.ImportSource {
             
             CoreStore.assert(
                 self.isRunningInAllowedQueue(),
                 "Attempted to import an object of type \(cs_typeName(into.entityClass)) outside the transaction's designated queue."
             )
             
-            return try cs_autoreleasepool {
+            return try autoreleasepool {
                 
                 return try sourceArray.flatMap { (source) -> T? in
-                    
-                    guard T.shouldInsertFromImportSource(source, inTransaction: self) else {
+                  
+                    let entityType = into.entityClass as! T.Type
+                    guard entityType.shouldInsert(from: source, in: self) else {
                         
                         return nil
                     }
-                    
-                    return try cs_autoreleasepool {
+                    return try autoreleasepool {
                         
                         let object = self.create(into)
-                        try object.didInsertFromImportSource(source, inTransaction: self)
+                        try object.didInsert(from: source, in: self)
                         return object
                     }
                 }
@@ -129,46 +131,45 @@ public extension BaseDataTransaction {
      
      - parameter into: an `Into` clause specifying the entity type
      - parameter source: the object to import values from
-     - throws: an `ErrorType` thrown from any of the `ImportableUniqueObject` methods
+     - throws: an `Error` thrown from any of the `ImportableUniqueObject` methods
      - returns: the created/updated `ImportableUniqueObject` instance, or `nil` if the import was ignored
      */
-    public func importUniqueObject<T where T: NSManagedObject, T: ImportableUniqueObject>(
-        into: Into<T>,
-        source: T.ImportSource) throws -> T?  {
+    public func importUniqueObject<T>(
+        _ into: Into<T>,
+        source: T.ImportSource) throws -> T? where T: NSManagedObject, T: ImportableUniqueObject  {
             
             CoreStore.assert(
                 self.isRunningInAllowedQueue(),
                 "Attempted to import an object of type \(cs_typeName(into.entityClass)) outside the transaction's designated queue."
             )
             
-            return try cs_autoreleasepool {
-                
-                let uniqueIDKeyPath = T.uniqueIDKeyPath
-                guard let uniqueIDValue = try T.uniqueIDFromImportSource(source, inTransaction: self) else {
+            return try autoreleasepool {
+              
+                let entityType = into.entityClass as! T.Type
+                let uniqueIDKeyPath = entityType.uniqueIDKeyPath
+                guard let uniqueIDValue = try entityType.uniqueID(from: source, in: self) else {
                     
                     return nil
                 }
                 
-                if let object = self.fetchOne(From(T), Where(uniqueIDKeyPath, isEqualTo: uniqueIDValue)) {
+                if let object = self.fetchOne(From(entityType), Where(uniqueIDKeyPath, isEqualTo: uniqueIDValue)) {
                     
-                    guard T.shouldUpdateFromImportSource(source, inTransaction: self) else {
+                    guard entityType.shouldUpdate(from: source, in: self) else {
                         
                         return nil
                     }
-                    
-                    try object.updateFromImportSource(source, inTransaction: self)
+                    try object.update(from: source, in: self)
                     return object
                 }
                 else {
                     
-                    guard T.shouldInsertFromImportSource(source, inTransaction: self) else {
+                    guard entityType.shouldInsert(from: source, in: self) else {
                         
                         return nil
                     }
-                    
                     let object = self.create(into)
                     object.uniqueIDValue = uniqueIDValue
-                    try object.didInsertFromImportSource(source, inTransaction: self)
+                    try object.didInsert(from: source, in: self)
                     return object
                 }
             }
@@ -176,79 +177,79 @@ public extension BaseDataTransaction {
     
     /**
      Updates existing `ImportableUniqueObject`s or creates them by importing from the specified array of import sources.
-     - Warning: While the array returned from `importUniqueObjects(...)` correctly maps to the order of `sourceArray`, the order of objects called with `ImportableUniqueObject` methods is arbitrary. Do not make assumptions that any particular object will be imported ahead or after another object.
+     `ImportableUniqueObject` methods are called on the objects in the same order as they are in the `sourceArray`, and are returned in an array with that same order.
+     - Warning: If `sourceArray` contains multiple import sources with same ID, no merging will occur and ONLY THE LAST duplicate will be imported.
      
      - parameter into: an `Into` clause specifying the entity type
      - parameter sourceArray: the array of objects to import values from
      - parameter preProcess: a closure that lets the caller tweak the internal `UniqueIDType`-to-`ImportSource` mapping to be used for importing. Callers can remove from/add to/update `mapping` and return the updated array from the closure.
-     - throws: an `ErrorType` thrown from any of the `ImportableUniqueObject` methods
+     - throws: an `Error` thrown from any of the `ImportableUniqueObject` methods
      - returns: the array of created/updated `ImportableUniqueObject` instances
      */
-    public func importUniqueObjects<T, S: SequenceType where T: NSManagedObject, T: ImportableUniqueObject, S.Generator.Element == T.ImportSource>(
-        into: Into<T>,
+    public func importUniqueObjects<T, S: Sequence>(
+        _ into: Into<T>,
         sourceArray: S,
-        @noescape preProcess: (mapping: [T.UniqueIDType: T.ImportSource]) throws -> [T.UniqueIDType: T.ImportSource] = { $0 }) throws -> [T] {
+        preProcess: @escaping (_ mapping: [T.UniqueIDType: T.ImportSource]) throws -> [T.UniqueIDType: T.ImportSource] = { $0 }) throws -> [T] where T: NSManagedObject, T: ImportableUniqueObject, S.Iterator.Element == T.ImportSource {
             
             CoreStore.assert(
                 self.isRunningInAllowedQueue(),
                 "Attempted to import an object of type \(cs_typeName(into.entityClass)) outside the transaction's designated queue."
             )
             
-            return try cs_autoreleasepool {
-                
-                var mapping = Dictionary<T.UniqueIDType, T.ImportSource>()
-                let sortedIDs = try cs_autoreleasepool {
-                    
+            return try autoreleasepool {
+              
+                let entityType = into.entityClass as! T.Type
+                var importSourceByID = Dictionary<T.UniqueIDType, T.ImportSource>()
+                let sortedIDs = try autoreleasepool {
+                  
                     return try sourceArray.flatMap { (source) -> T.UniqueIDType? in
                         
-                        guard let uniqueIDValue = try T.uniqueIDFromImportSource(source, inTransaction: self) else {
+                        guard let uniqueIDValue = try entityType.uniqueID(from: source, in: self) else {
                             
                             return nil
                         }
-                        
-                        mapping[uniqueIDValue] = source
+                        importSourceByID[uniqueIDValue] = source // effectively replaces duplicate with the latest
                         return uniqueIDValue
                     }
                 }
                 
-                mapping = try cs_autoreleasepool { try preProcess(mapping: mapping) }
-                
-                var objects = Dictionary<T.UniqueIDType, T>()
-                for object in self.fetchAll(From(T), Where(T.uniqueIDKeyPath, isMemberOf: sortedIDs)) ?? [] {
+                importSourceByID = try autoreleasepool { try preProcess(importSourceByID) }
+
+                var existingObjectsByID = Dictionary<T.UniqueIDType, T>()
+                self.fetchAll(From(entityType), Where(entityType.uniqueIDKeyPath, isMemberOf: sortedIDs))?
+                    .forEach { existingObjectsByID[$0.uniqueIDValue] = $0 }
+              
+                var processedObjectIDs = Set<T.UniqueIDType>()
+                var result = [T]()
+              
+                for objectID in sortedIDs where !processedObjectIDs.contains(objectID) {
                     
-                    try cs_autoreleasepool {
+                    guard let source = importSourceByID[objectID] else {
                         
-                        let uniqueIDValue = object.uniqueIDValue
-                        
-                        guard let source = mapping.removeValueForKey(uniqueIDValue)
-                            where T.shouldUpdateFromImportSource(source, inTransaction: self) else {
+                        continue
+                    }
+                    try autoreleasepool {
+
+                        if let object = existingObjectsByID[objectID] {
+                            
+                            guard entityType.shouldUpdate(from: source, in: self) else {
                                 
                                 return
+                            }
+                            try object.update(from: source, in: self)
+                            result.append(object)
                         }
-                        
-                        try object.updateFromImportSource(source, inTransaction: self)
-                        objects[uniqueIDValue] = object
-                    }
-                }
-                
-                for (uniqueIDValue, source) in mapping {
-                    
-                    try cs_autoreleasepool {
-                        
-                        guard T.shouldInsertFromImportSource(source, inTransaction: self) else {
+                        else if entityType.shouldInsert(from: source, in: self) {
                             
-                            return
+                            let object = self.create(into)
+                            object.uniqueIDValue = objectID
+                            try object.didInsert(from: source, in: self)
+                            result.append(object)
                         }
-                        
-                        let object = self.create(into)
-                        object.uniqueIDValue = uniqueIDValue
-                        try object.didInsertFromImportSource(source, inTransaction: self)
-                        
-                        objects[uniqueIDValue] = object
+                        processedObjectIDs.insert(objectID)
                     }
                 }
-                
-                return sortedIDs.flatMap { objects[$0] }
+                return result
             }
     }
 }

Sources/Importing/CoreStoreImportableAttributeType.swift

@@ -0,0 +1,317 @@
+//
+//  CoreStoreImportableAttributeType.swift
+//  CoreStore
+//
+//  Copyright © 2017 John Rommel Estropia
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all
+//  copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+//  SOFTWARE.
+//
+
+import Foundation
+import CoreData
+
+
+// MARK: - CoreStoreImportableAttributeType
+
+public protocol CoreStoreImportableAttributeType: CoreStoreQueryableAttributeType {
+    
+    associatedtype ImportableNativeType: QueryableNativeType
+    
+    @inline(__always)
+    static func cs_emptyValue() -> Self
+    
+    @inline(__always)
+    static func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Self?
+}
+
+
+// MARK: - NSNumber
+
+extension NSNumber: CoreStoreImportableAttributeType {
+    
+    public typealias ImportableNativeType = NSNumber
+    
+    @nonobjc @inline(__always)
+    public class func cs_emptyValue() -> Self {
+        
+        return self.init()
+    }
+    
+    @nonobjc @inline(__always)
+    public class func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Self? {
+        
+        func forceCast<T: NSNumber>(_ value: Any) -> T? {
+            
+            return value as? T
+        }
+        return forceCast(value)
+    }
+}
+
+
+// MARK: - NSString
+
+extension NSString: CoreStoreImportableAttributeType {
+    
+    public typealias ImportableNativeType = NSString
+    
+    @nonobjc @inline(__always)
+    public class func cs_emptyValue() -> Self {
+        
+        return self.init()
+    }
+    
+    @nonobjc @inline(__always)
+    public class func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Self? {
+        
+        func forceCast<T: NSString>(_ value: Any) -> T? {
+            
+            return value as? T
+        }
+        return forceCast(value)
+    }
+}
+
+
+// MARK: - NSDate
+
+extension NSDate: CoreStoreImportableAttributeType {
+    
+    public typealias ImportableNativeType = NSDate
+    
+    @nonobjc @inline(__always)
+    public class func cs_emptyValue() -> Self {
+        
+        return self.init(timeIntervalSinceReferenceDate: 0)
+    }
+    
+    @nonobjc @inline(__always)
+    public class func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Self? {
+        
+        func forceCast<T: NSDate>(_ value: Any) -> T? {
+            
+            return value as? T
+        }
+        return forceCast(value)
+    }
+}
+
+
+// MARK: - NSData
+
+extension NSData: CoreStoreImportableAttributeType {
+    
+    public typealias ImportableNativeType = NSData
+    
+    @nonobjc @inline(__always)
+    public class func cs_emptyValue() -> Self {
+        
+        return self.init()
+    }
+    
+    @nonobjc @inline(__always)
+    public class func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Self? {
+        
+        func forceCast<T: NSData>(_ value: Any) -> T? {
+            
+            return value as? T
+        }
+        return forceCast(value)
+    }
+}
+
+
+// MARK: - Bool
+
+extension Bool: CoreStoreImportableAttributeType {
+    
+    public typealias ImportableNativeType = NSNumber
+    
+    @inline(__always)
+    public static func cs_emptyValue() -> Bool {
+        
+        return false
+    }
+    
+    @inline(__always)
+    public static func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Bool? {
+        
+        return value.boolValue
+    }
+}
+
+
+// MARK: - Int16
+
+extension Int16: CoreStoreImportableAttributeType {
+    
+    public typealias ImportableNativeType = NSNumber
+    
+    @inline(__always)
+    public static func cs_emptyValue() -> Int16 {
+        
+        return 0
+    }
+    
+    @inline(__always)
+    public static func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Int16? {
+        
+        return value.int16Value
+    }
+}
+
+
+// MARK: - Int32
+
+extension Int32: CoreStoreImportableAttributeType {
+    
+    public typealias ImportableNativeType = NSNumber
+    
+    @inline(__always)
+    public static func cs_emptyValue() -> Int32 {
+        
+        return 0
+    }
+    
+    @inline(__always)
+    public static func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Int32? {
+        
+        return value.int32Value
+    }
+}
+
+
+// MARK: - Int64
+
+extension Int64: CoreStoreImportableAttributeType {
+    
+    public typealias ImportableNativeType = NSNumber
+    
+    @inline(__always)
+    public static func cs_emptyValue() -> Int64 {
+        
+        return 0
+    }
+    
+    @inline(__always)
+    public static func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Int64? {
+        
+        return value.int64Value
+    }
+}
+
+
+// MARK: - Double
+
+extension Double: CoreStoreImportableAttributeType {
+    
+    public typealias ImportableNativeType = NSNumber
+    
+    @inline(__always)
+    public static func cs_emptyValue() -> Double {
+        
+        return 0
+    }
+    
+    @inline(__always)
+    public static func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Double? {
+        
+        return value.doubleValue
+    }
+}
+
+
+// MARK: - Float
+
+extension Float: CoreStoreImportableAttributeType {
+    
+    public typealias ImportableNativeType = NSNumber
+    
+    @inline(__always)
+    public static func cs_emptyValue() -> Float {
+        
+        return 0
+    }
+    
+    @inline(__always)
+    public static func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Float? {
+        
+        return value.floatValue
+    }
+}
+
+
+// MARK: - Date
+
+extension Date: CoreStoreImportableAttributeType {
+    
+    public typealias ImportableNativeType = NSDate
+    
+    @inline(__always)
+    public static func cs_emptyValue() -> Date {
+        
+        return Date(timeIntervalSinceReferenceDate: 0)
+    }
+    
+    @inline(__always)
+    public static func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Date? {
+        
+        return value as Date
+    }
+}
+
+
+// MARK: - String
+
+extension String: CoreStoreImportableAttributeType {
+    
+    public typealias ImportableNativeType = NSString
+    
+    @inline(__always)
+    public static func cs_emptyValue() -> String {
+        
+        return ""
+    }
+    
+    @inline(__always)
+    public static func cs_fromImportableNativeType(_ value: ImportableNativeType) -> String? {
+        
+        return value as String
+    }
+}
+
+
+// MARK: - Data
+
+extension Data: CoreStoreImportableAttributeType {
+    
+    public typealias ImportableNativeType = NSData
+    
+    @inline(__always)
+    public static func cs_emptyValue() -> Data {
+        
+        return Data()
+    }
+    
+    @inline(__always)
+    public static func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Data? {
+        
+        return value as Data
+    }
+}

Sources/Importing/ImportableObject.swift

@@ -40,7 +40,7 @@ import CoreData
  CoreStore.beginAsynchronous { (transaction) -> Void in
      let json: NSDictionary = // ...
      let person = try! transaction.importObject(
-         Into(MyPersonEntity),
+         Into<MyPersonEntity>(),
          source: json
      )
      // ...
@@ -48,7 +48,7 @@ import CoreData
  }
  ```
  */
-public protocol ImportableObject: class {
+public protocol ImportableObject: class, NSObjectProtocol, AnyObject {
     
     /**
      The data type for the import source. This is most commonly an `NSDictionary` or another external source such as an `NSUserDefaults`.
@@ -62,15 +62,24 @@ public protocol ImportableObject: class {
      - parameter transaction: the transaction that invoked the import. Use the transaction to fetch or create related objects if needed.
      - returns: `true` if an object should be created from `source`. Return `false` to ignore.
      */
-    static func shouldInsertFromImportSource(source: ImportSource, inTransaction transaction: BaseDataTransaction) -> Bool
+    static func shouldInsert(from source: ImportSource, in transaction: BaseDataTransaction) -> Bool
     
     /**
      Implements the actual importing of data from `source`. Implementers should pull values from `source` and assign them to the receiver's attributes. Note that throwing from this method will cause subsequent imports that are part of the same `importObjects(:sourceArray:)` call to be cancelled.
      
      - parameter source: the object to import from
      - parameter transaction: the transaction that invoked the import. Use the transaction to fetch or create related objects if needed.
-    */
-    func didInsertFromImportSource(source: ImportSource, inTransaction transaction: BaseDataTransaction) throws
+     */
+    func didInsert(from source: ImportSource, in transaction: BaseDataTransaction) throws
+    
+    
+    // MARK: Deprecated
+    
+    @available(*, deprecated: 3.0.0, renamed: "shouldInsert(from:in:)")
+    static func shouldInsertFromImportSource(_ source: ImportSource, inTransaction transaction: BaseDataTransaction) -> Bool
+    
+    @available(*, deprecated: 3.0.0, renamed: "didInsert(from:in:)")
+    func didInsertFromImportSource(_ source: ImportSource, inTransaction transaction: BaseDataTransaction) throws
 }
 
 
@@ -78,8 +87,21 @@ public protocol ImportableObject: class {
 
 public extension ImportableObject {
     
-    static func shouldInsertFromImportSource(source: ImportSource, inTransaction transaction: BaseDataTransaction) -> Bool {
+    static func shouldInsert(from source: ImportSource, in transaction: BaseDataTransaction) -> Bool {
         
         return true
     }
+    
+    
+    // MARK: Deprecated
+    
+    static func shouldInsertFromImportSource(_ source: ImportSource, inTransaction transaction: BaseDataTransaction) -> Bool {
+        
+        return Self.shouldInsert(from: source, in: transaction)
+    }
+    
+    func didInsertFromImportSource(_ source: ImportSource, inTransaction transaction: BaseDataTransaction) throws {
+        
+        try self.didInsert(from: source, in: transaction)
+    }
 }

Sources/Importing/ImportableUniqueObject.swift

@@ -41,7 +41,7 @@ import CoreData
  CoreStore.beginAsynchronous { (transaction) -> Void in
      let json: NSDictionary = // ...
      let person = try! transaction.importUniqueObject(
-         Into(MyPersonEntity),
+         Into<MyPersonEntity>(),
          source: json
      )
      // ...
@@ -59,7 +59,7 @@ public protocol ImportableUniqueObject: ImportableObject {
     /**
      The data type for the entity's unique ID attribute
      */
-    associatedtype UniqueIDType: NSObject
+    associatedtype UniqueIDType: CoreStoreImportableAttributeType
     
     /**
      The keyPath to the entity's unique ID attribute
@@ -67,18 +67,19 @@ public protocol ImportableUniqueObject: ImportableObject {
     static var uniqueIDKeyPath: String { get }
     
     /**
-     The object's unique ID value
+     The object's unique ID value. The default implementation returns the value of the attribute pertained to by `uniqueIDKeyPath`
+     - Important: It is the developer's responsibility to ensure that the attribute value pertained by `uniqueIDKeyPath` is not `nil` during the call to `uniqueIDValue`.
      */
     var uniqueIDValue: UniqueIDType { get set }
     
     /**
-     Return `true` if an object should be created from `source`. Return `false` to ignore and skip `source`. The default implementation returns the value returned by the `shouldUpdateFromImportSource(:inTransaction:)` implementation.
+     Return `true` if an object should be created from `source`. Return `false` to ignore and skip `source`. The default implementation returns the value returned by the `shouldUpdate(from:in:)` implementation.
      
      - parameter source: the object to import from
      - parameter transaction: the transaction that invoked the import. Use the transaction to fetch or create related objects if needed.
      - returns: `true` if an object should be created from `source`. Return `false` to ignore.
      */
-    static func shouldInsertFromImportSource(source: ImportSource, inTransaction transaction: BaseDataTransaction) -> Bool
+    static func shouldInsert(from source: ImportSource, in transaction: BaseDataTransaction) -> Bool
     
     /**
      Return `true` if an object should be updated from `source`. Return `false` to ignore and skip `source`. The default implementation returns `true`.
@@ -87,24 +88,24 @@ public protocol ImportableUniqueObject: ImportableObject {
      - parameter transaction: the transaction that invoked the import. Use the transaction to fetch or create related objects if needed.
      - returns: `true` if an object should be updated from `source`. Return `false` to ignore.
      */
-    static func shouldUpdateFromImportSource(source: ImportSource, inTransaction transaction: BaseDataTransaction) -> Bool
+    static func shouldUpdate(from source: ImportSource, in transaction: BaseDataTransaction) -> Bool
     
     /**
-     Return the unique ID as extracted from `source`. This method is called before `shouldInsertFromImportSource(...)` or `shouldUpdateFromImportSource(...)`. Return `nil` to skip importing from `source`. Note that throwing from this method will cause subsequent imports that are part of the same `importUniqueObjects(:sourceArray:)` call to be cancelled.
+     Return the unique ID as extracted from `source`. This method is called before `shouldInsert(from:in:)` or `shouldUpdate(from:in:)`. Return `nil` to skip importing from `source`. Note that throwing from this method will cause subsequent imports that are part of the same `importUniqueObjects(:sourceArray:)` call to be cancelled.
      
      - parameter source: the object to import from
      - parameter transaction: the transaction that invoked the import. Use the transaction to fetch or create related objects if needed.
      - returns: the unique ID as extracted from `source`, or `nil` to skip importing from `source`.
      */
-    static func uniqueIDFromImportSource(source: ImportSource, inTransaction transaction: BaseDataTransaction) throws -> UniqueIDType?
+    static func uniqueID(from source: ImportSource, in transaction: BaseDataTransaction) throws -> UniqueIDType?
     
     /**
-     Implements the actual importing of data from `source`. This method is called just after the object is created and assigned its unique ID as returned from `uniqueIDFromImportSource(...)`. Implementers should pull values from `source` and assign them to the receiver's attributes. Note that throwing from this method will cause subsequent imports that are part of the same `importUniqueObjects(:sourceArray:)` call to be cancelled. The default implementation simply calls `updateFromImportSource(...)`.
+     Implements the actual importing of data from `source`. This method is called just after the object is created and assigned its unique ID as returned from `uniqueID(from:in:)`. Implementers should pull values from `source` and assign them to the receiver's attributes. Note that throwing from this method will cause subsequent imports that are part of the same `importUniqueObjects(:sourceArray:)` call to be cancelled. The default implementation simply calls `update(from:in:)`.
      
      - parameter source: the object to import from
      - parameter transaction: the transaction that invoked the import. Use the transaction to fetch or create related objects if needed.
      */
-    func didInsertFromImportSource(source: ImportSource, inTransaction transaction: BaseDataTransaction) throws
+    func didInsert(from source: ImportSource, in transaction: BaseDataTransaction) throws
     
     /**
      Implements the actual importing of data from `source`. This method is called just after the existing object is fetched using its unique ID. Implementers should pull values from `source` and assign them to the receiver's attributes. Note that throwing from this method will cause subsequent imports that are part of the same `importUniqueObjects(:sourceArray:)` call to be cancelled.
@@ -112,7 +113,25 @@ public protocol ImportableUniqueObject: ImportableObject {
      - parameter source: the object to import from
      - parameter transaction: the transaction that invoked the import. Use the transaction to fetch or create related objects if needed.
      */
-    func updateFromImportSource(source: ImportSource, inTransaction transaction: BaseDataTransaction) throws
+    func update(from source: ImportSource, in transaction: BaseDataTransaction) throws
+    
+    
+    // MARK: Deprecated
+    
+    @available(*, deprecated: 3.0.0, renamed: "shouldInsert(from:in:)")
+    static func shouldInsertFromImportSource(_ source: ImportSource, inTransaction transaction: BaseDataTransaction) -> Bool
+    
+    @available(*, deprecated: 3.0.0, renamed: "shouldUpdate(from:in:)")
+    static func shouldUpdateFromImportSource(_ source: ImportSource, inTransaction transaction: BaseDataTransaction) -> Bool
+    
+    @available(*, deprecated: 3.0.0, renamed: "uniqueID(from:in:)")
+    static func uniqueIDFromImportSource(_ source: ImportSource, inTransaction transaction: BaseDataTransaction) throws -> UniqueIDType?
+    
+    @available(*, deprecated: 3.0.0, renamed: "didInsert(from:in:)")
+    func didInsertFromImportSource(_ source: ImportSource, inTransaction transaction: BaseDataTransaction) throws
+    
+    @available(*, deprecated: 3.0.0, renamed: "update(from:in:)")
+    func updateFromImportSource(_ source: ImportSource, inTransaction transaction: BaseDataTransaction) throws
 }
 
 
@@ -120,18 +139,69 @@ public protocol ImportableUniqueObject: ImportableObject {
 
 public extension ImportableUniqueObject {
     
-    static func shouldInsertFromImportSource(source: ImportSource, inTransaction transaction: BaseDataTransaction) -> Bool {
+    static func shouldInsert(from source: ImportSource, in transaction: BaseDataTransaction) -> Bool {
         
-        return self.shouldUpdateFromImportSource(source, inTransaction: transaction)
+        return Self.shouldUpdate(from: source, in: transaction)
     }
     
-    static func shouldUpdateFromImportSource(source: ImportSource, inTransaction transaction: BaseDataTransaction) -> Bool {
+    static func shouldUpdate(from source: ImportSource, in transaction: BaseDataTransaction) -> Bool{
         
         return true
     }
     
-    func didInsertFromImportSource(source: ImportSource, inTransaction transaction: BaseDataTransaction) throws {
+    func didInsert(from source: Self.ImportSource, in transaction: BaseDataTransaction) throws {
         
-        try self.updateFromImportSource(source, inTransaction: transaction)
+        try self.update(from: source, in: transaction)
+    }
+    
+    
+    // MARK: Deprecated
+    
+    static func shouldInsertFromImportSource(_ source: ImportSource, inTransaction transaction: BaseDataTransaction) -> Bool {
+        
+        return Self.shouldInsert(from: source, in: transaction)
+    }
+    
+    static func shouldUpdateFromImportSource(_ source: ImportSource, inTransaction transaction: BaseDataTransaction) -> Bool {
+        
+        return Self.shouldUpdate(from: source, in: transaction)
+    }
+    
+    static func uniqueIDFromImportSource(_ source: ImportSource, inTransaction transaction: BaseDataTransaction) throws -> UniqueIDType? {
+        
+        return try Self.uniqueID(from: source, in: transaction)
+    }
+    
+    func didInsertFromImportSource(_ source: ImportSource, inTransaction transaction: BaseDataTransaction) throws {
+        
+        try self.didInsert(from: source, in: transaction)
+    }
+    
+    func updateFromImportSource(_ source: ImportSource, inTransaction transaction: BaseDataTransaction) throws {
+        
+        try self.update(from: source, in: transaction)
+    }
+}
+
+
+// MARK: - ImportableUniqueObject (Default Implementations)
+
+public extension ImportableUniqueObject where Self: NSManagedObject {
+    
+    var uniqueIDValue: UniqueIDType {
+        
+        get {
+            
+            return UniqueIDType.cs_fromImportableNativeType(
+                self.value(forKey: type(of: self).uniqueIDKeyPath) as! UniqueIDType.ImportableNativeType
+            )!
+        }
+        set {
+            
+            self.setValue(
+                newValue.cs_toQueryableNativeType(),
+                forKey: type(of: self).uniqueIDKeyPath
+            )
+        }
     }
 }

Sources/Info.plist

@@ -15,7 +15,7 @@
 	<key>CFBundlePackageType</key>
 	<string>FMWK</string>
 	<key>CFBundleShortVersionString</key>
-	<string>2.0.3</string>
+	<string>3.1.0</string>
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>

Sources/Internal/CoreStoreFetchRequest+CoreStore.swift

@@ -1,5 +1,5 @@
 //
-//  CoreStoreFetchRequest.swift
+//  CoreStoreFetchRequest+CoreStore.swift
 //  CoreStore
 //
 //  Copyright © 2016 John Rommel Estropia
@@ -29,14 +29,13 @@ import CoreData
 
 // MARK: - CoreStoreFetchRequest
 
-// Bugfix for NSFetchRequest messing up memory management for `affectedStores`
-// http://stackoverflow.com/questions/14396375/nsfetchedresultscontroller-crashes-in-ios-6-if-affectedstores-is-specified
-internal final class CoreStoreFetchRequest: NSFetchRequest {
+internal extension CoreStoreFetchRequest {
     
-    @objc
-    override var affectedStores: [NSPersistentStore]? {
+    // MARK: Internal
+    
+    @nonobjc
+    internal func dynamicCast<U: NSFetchRequestResult>() -> NSFetchRequest<U> {
         
-        get { return super.affectedStores }
-        set { super.affectedStores = newValue }
+        return unsafeBitCast(self, to: NSFetchRequest<U>.self)
     }
 }

Sources/Internal/CoreStoreFetchedResultsController.swift

@@ -31,12 +31,12 @@ import CoreData
 
 // MARK: - CoreStoreFetchedResultsController
 
-internal final class CoreStoreFetchedResultsController: NSFetchedResultsController {
+internal final class CoreStoreFetchedResultsController: NSFetchedResultsController<NSManagedObject> {
     
     // MARK: Internal
     
     @nonobjc
-    internal convenience init<T: NSManagedObject>(dataStack: DataStack, fetchRequest: NSFetchRequest, from: From<T>? = nil, sectionBy: SectionBy? = nil, applyFetchClauses: (fetchRequest: NSFetchRequest) -> Void) {
+    internal convenience init<T: NSManagedObject>(dataStack: DataStack, fetchRequest: NSFetchRequest<NSManagedObject>, from: From<T>? = nil, sectionBy: SectionBy? = nil, applyFetchClauses: @escaping (_ fetchRequest: NSFetchRequest<NSManagedObject>) -> Void) {
         
         self.init(
             context: dataStack.mainContext,
@@ -48,14 +48,14 @@ internal final class CoreStoreFetchedResultsController: NSFetchedResultsControll
     }
     
     @nonobjc
-    internal init<T: NSManagedObject>(context: NSManagedObjectContext, fetchRequest: NSFetchRequest, from: From<T>? = nil, sectionBy: SectionBy? = nil, applyFetchClauses: (fetchRequest: NSFetchRequest) -> Void) {
+    internal init<T: NSManagedObject>(context: NSManagedObjectContext, fetchRequest: NSFetchRequest<NSManagedObject>, from: From<T>? = nil, sectionBy: SectionBy? = nil, applyFetchClauses: @escaping (_ fetchRequest: NSFetchRequest<NSManagedObject>) -> Void) {
         
         _ = from?.applyToFetchRequest(
             fetchRequest,
             context: context,
             applyAffectedStores: false
         )
-        applyFetchClauses(fetchRequest: fetchRequest)
+        applyFetchClauses(fetchRequest)
         
         if let from = from {
             
@@ -68,7 +68,7 @@ internal final class CoreStoreFetchedResultsController: NSFetchedResultsControll
             
             guard let from = (fetchRequest.entity.flatMap { $0.managedObjectClassName }).flatMap(NSClassFromString).flatMap(From.init) else {
                 
-                CoreStore.abort("Attempted to create an \(cs_typeName(NSFetchedResultsController)) without a \(cs_typeName(From)) clause or an \(cs_typeName(NSEntityDescription)).")
+                CoreStore.abort("Attempted to create a \(CoreStoreFetchedResultsController.self) without a \(cs_typeName(From<T>.self)) clause or an \(cs_typeName(NSEntityDescription.self)).")
             }
             
             self.reapplyAffectedStores = { fetchRequest, context in
@@ -88,16 +88,22 @@ internal final class CoreStoreFetchedResultsController: NSFetchedResultsControll
     @nonobjc
     internal func performFetchFromSpecifiedStores() throws {
         
-        if !self.reapplyAffectedStores(fetchRequest: self.fetchRequest, context: self.managedObjectContext) {
+        if !self.reapplyAffectedStores(self.fetchRequest, self.managedObjectContext) {
             
             CoreStore.log(
-                .Warning,
-                message: "Attempted to perform a fetch on an \(cs_typeName(NSFetchedResultsController)) but could not find any persistent store for the entity \(cs_typeName(self.fetchRequest.entityName))"
+                .warning,
+                message: "Attempted to perform a fetch on an \(cs_typeName(self)) but could not find any persistent store for the entity \(cs_typeName(self.fetchRequest.entityName))"
             )
         }
         try self.performFetch()
     }
     
+    @nonobjc
+    internal func dynamicCast<U: NSFetchRequestResult>() -> NSFetchedResultsController<U> {
+        
+        return unsafeBitCast(self, to: NSFetchedResultsController<U>.self)
+    }
+    
     deinit {
         
         self.delegate = nil
@@ -107,7 +113,7 @@ internal final class CoreStoreFetchedResultsController: NSFetchedResultsControll
     // MARK: Private
     
     @nonobjc
-    private let reapplyAffectedStores: (fetchRequest: NSFetchRequest, context: NSManagedObjectContext) -> Bool
+    private let reapplyAffectedStores: (_ fetchRequest: NSFetchRequest<NSManagedObject>, _ context: NSManagedObjectContext) -> Bool
 }
 
 #endif

Sources/Internal/DispatchQueue+CoreStore.swift

@@ -0,0 +1,97 @@
+//
+//  DispatchQueue+CoreStore.swift
+//  CoreStore
+//
+//  Copyright © 2016 John Rommel Estropia
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all
+//  copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+//  SOFTWARE.
+//
+
+import Foundation
+
+
+// MARK: - DispatchQueue
+
+internal extension DispatchQueue {
+    
+    @nonobjc
+    internal static func serial(_ label: String, qos: DispatchQoS = .default) -> DispatchQueue {
+        
+        return DispatchQueue(
+            label: label,
+            qos: qos,
+            attributes: [],
+            autoreleaseFrequency: .inherit,
+            target: nil
+        )
+    }
+    
+    @nonobjc
+    internal static func concurrent(_ label: String, qos: DispatchQoS = .default) -> DispatchQueue {
+        
+        return DispatchQueue(
+            label: label,
+            qos: qos,
+            attributes: .concurrent,
+            autoreleaseFrequency: .inherit,
+            target: nil
+        )
+    }
+    
+    @nonobjc
+    internal func cs_isCurrentExecutionContext() -> Bool {
+        
+        let specific = ObjectIdentifier(self)
+        
+        self.setSpecific(key: Static.specificKey, value: specific)
+        return DispatchQueue.getSpecific(key: Static.specificKey) == specific
+    }
+    
+    @nonobjc
+    internal func cs_sync<T>(_ closure: () throws -> T) rethrows -> T {
+        
+        return try self.sync { try autoreleasepool(invoking: closure) }
+    }
+    
+    @nonobjc
+    internal func cs_async(_ closure: @escaping () -> Void) {
+        
+        self.async { autoreleasepool(invoking: closure) }
+    }
+    
+    @nonobjc
+    internal func cs_barrierSync<T>(_ closure: () throws -> T) rethrows -> T {
+        
+        return try self.sync(flags: .barrier) { try autoreleasepool(invoking: closure) }
+    }
+    
+    @nonobjc
+    internal func cs_barrierAsync(_ closure: @escaping () -> Void) {
+        
+        self.async(flags: .barrier) { autoreleasepool(invoking: closure) }
+    }
+    
+    
+    // MARK: Private
+    
+    private enum Static {
+        
+        static let specificKey = DispatchSpecificKey<ObjectIdentifier>()
+    }
+}

Sources/Internal/FetchedResultsControllerDelegate.swift

@@ -33,21 +33,21 @@ import CoreData
 
 internal protocol FetchedResultsControllerHandler: class {
     
-    func controller(controller: NSFetchedResultsController, didChangeObject anObject: AnyObject, atIndexPath indexPath: NSIndexPath?, forChangeType type: NSFetchedResultsChangeType, newIndexPath: NSIndexPath?)
+    func controller(_ controller: NSFetchedResultsController<NSFetchRequestResult>, didChangeObject anObject: Any, atIndexPath indexPath: IndexPath?, forChangeType type: NSFetchedResultsChangeType, newIndexPath: IndexPath?)
     
-    func controller(controller: NSFetchedResultsController, didChangeSection sectionInfo: NSFetchedResultsSectionInfo, atIndex sectionIndex: Int, forChangeType type: NSFetchedResultsChangeType)
+    func controller(_ controller: NSFetchedResultsController<NSFetchRequestResult>, didChangeSection sectionInfo: NSFetchedResultsSectionInfo, atIndex sectionIndex: Int, forChangeType type: NSFetchedResultsChangeType)
     
-    func controllerWillChangeContent(controller: NSFetchedResultsController)
+    func controllerWillChangeContent(_ controller: NSFetchedResultsController<NSFetchRequestResult>)
     
-    func controllerDidChangeContent(controller: NSFetchedResultsController)
+    func controllerDidChangeContent(_ controller: NSFetchedResultsController<NSFetchRequestResult>)
     
-    func controller(controller: NSFetchedResultsController, sectionIndexTitleForSectionName sectionName: String?) -> String?
+    func controller(_ controller: NSFetchedResultsController<NSFetchRequestResult>, sectionIndexTitleForSectionName sectionName: String?) -> String?
 }
 
 
 // MARK: - FetchedResultsControllerDelegate
 
-internal final class FetchedResultsControllerDelegate: NSObject, NSFetchedResultsControllerDelegate {
+internal final class FetchedResultsControllerDelegate<EntityType: NSManagedObject>: NSObject, NSFetchedResultsControllerDelegate {
     
     // MARK: Internal
     
@@ -58,7 +58,7 @@ internal final class FetchedResultsControllerDelegate: NSObject, NSFetchedResult
     internal weak var handler: FetchedResultsControllerHandler?
     
     @nonobjc
-    internal weak var fetchedResultsController: NSFetchedResultsController? {
+    internal weak var fetchedResultsController: CoreStoreFetchedResultsController? {
         
         didSet {
             
@@ -76,7 +76,7 @@ internal final class FetchedResultsControllerDelegate: NSObject, NSFetchedResult
     // MARK: NSFetchedResultsControllerDelegate
     
     @objc
-    dynamic func controllerWillChangeContent(controller: NSFetchedResultsController) {
+    dynamic func controllerWillChangeContent(_ controller: NSFetchedResultsController<NSFetchRequestResult>) {
         
         guard self.enabled else {
             
@@ -90,7 +90,7 @@ internal final class FetchedResultsControllerDelegate: NSObject, NSFetchedResult
     }
     
     @objc
-    dynamic func controllerDidChangeContent(controller: NSFetchedResultsController) {
+    dynamic func controllerDidChangeContent(_ controller: NSFetchedResultsController<NSFetchRequestResult>) {
         
         guard self.enabled else {
             
@@ -101,14 +101,14 @@ internal final class FetchedResultsControllerDelegate: NSObject, NSFetchedResult
     }
     
     @objc
-    dynamic func controller(controller: NSFetchedResultsController, didChangeObject anObject: AnyObject, atIndexPath indexPath: NSIndexPath?, forChangeType type: NSFetchedResultsChangeType, newIndexPath: NSIndexPath?) {
+    dynamic func controller(_ controller: NSFetchedResultsController<NSFetchRequestResult>, didChange anObject: Any, at indexPath: IndexPath?, for type: NSFetchedResultsChangeType, newIndexPath: IndexPath?) {
         
         guard self.enabled else {
             
             return
         }
         
-        guard let actualType = NSFetchedResultsChangeType(rawValue: type.rawValue) else {
+        guard var actualType = NSFetchedResultsChangeType(rawValue: type.rawValue) else {
             
             // This fix is for a bug where iOS passes 0 for NSFetchedResultsChangeType, but this is not a valid enum case.
             // Swift will then always execute the first case of the switch causing strange behaviour.
@@ -120,21 +120,32 @@ internal final class FetchedResultsControllerDelegate: NSObject, NSFetchedResult
         // http://stackoverflow.com/questions/31383760/ios-9-attempt-to-delete-and-reload-the-same-index-path/31384014#31384014
         // https://forums.developer.apple.com/message/9998#9998
         // https://forums.developer.apple.com/message/31849#31849
+
+        if #available(iOS 10.0, tvOS 10.0, watchOS 3.0, *) {
+         
+            // I don't know if iOS 10 even attempted to fix this mess...
+            if case .update = actualType,
+                indexPath != nil,
+                newIndexPath != nil {
+                
+                actualType = .move
+            }
+        }
         
         switch actualType {
             
-        case .Update:
-            guard let section = indexPath?.indexAtPosition(0) else {
+        case .update:
+            guard let section = indexPath?[0] else {
                 
                 return
             }
             if self.deletedSections.contains(section)
                 || self.insertedSections.contains(section) {
-                    
-                    return
+                
+                return
             }
             
-        case .Move:
+        case .move:
             guard let indexPath = indexPath, let newIndexPath = newIndexPath else {
                 
                 return
@@ -143,25 +154,25 @@ internal final class FetchedResultsControllerDelegate: NSObject, NSFetchedResult
                 
                 break
             }
-            if self.insertedSections.contains(indexPath.indexAtPosition(0)) {
+            if self.insertedSections.contains(indexPath[0]) {
                 
                 // Observers that handle the .Move change are advised to delete then reinsert the object instead of just moving. This is especially true when indexPath and newIndexPath are equal. For example, calling tableView.moveRowAtIndexPath(_:toIndexPath) when both indexPaths are the same will crash the tableView.
                 self.handler?.controller(
                     controller,
                     didChangeObject: anObject,
                     atIndexPath: indexPath,
-                    forChangeType: .Move,
+                    forChangeType: .move,
                     newIndexPath: newIndexPath
                 )
                 return
             }
-            if self.deletedSections.contains(indexPath.indexAtPosition(0)) {
+            if self.deletedSections.contains(indexPath[0]) {
                 
                 self.handler?.controller(
                     controller,
                     didChangeObject: anObject,
                     atIndexPath: nil,
-                    forChangeType: .Insert,
+                    forChangeType: .insert,
                     newIndexPath: indexPath
                 )
                 return
@@ -170,7 +181,7 @@ internal final class FetchedResultsControllerDelegate: NSObject, NSFetchedResult
                 controller,
                 didChangeObject: anObject,
                 atIndexPath: indexPath,
-                forChangeType: .Update,
+                forChangeType: .update,
                 newIndexPath: nil
             )
             return
@@ -189,7 +200,7 @@ internal final class FetchedResultsControllerDelegate: NSObject, NSFetchedResult
     }
     
     @objc
-    dynamic func controller(controller: NSFetchedResultsController, didChangeSection sectionInfo: NSFetchedResultsSectionInfo, atIndex sectionIndex: Int, forChangeType type: NSFetchedResultsChangeType) {
+    dynamic func controller(_ controller: NSFetchedResultsController<NSFetchRequestResult>, didChange sectionInfo: NSFetchedResultsSectionInfo, atSectionIndex sectionIndex: Int, for type: NSFetchedResultsChangeType) {
         
         guard self.enabled else {
             
@@ -198,8 +209,8 @@ internal final class FetchedResultsControllerDelegate: NSObject, NSFetchedResult
         
         switch type {
             
-        case .Delete:   self.deletedSections.insert(sectionIndex)
-        case .Insert:   self.insertedSections.insert(sectionIndex)
+        case .delete:   self.deletedSections.insert(sectionIndex)
+        case .insert:   self.insertedSections.insert(sectionIndex)
         default: break
         }
         
@@ -212,7 +223,7 @@ internal final class FetchedResultsControllerDelegate: NSObject, NSFetchedResult
     }
     
     @objc
-    dynamic func controller(controller: NSFetchedResultsController, sectionIndexTitleForSectionName sectionName: String) -> String? {
+    dynamic func controller(_ controller: NSFetchedResultsController<NSFetchRequestResult>, sectionIndexTitleForSectionName sectionName: String) -> String? {
         
         return self.handler?.controller(
             controller,

Sources/Internal/Functions.swift

@@ -25,70 +25,9 @@
 
 import Foundation
 
+// MARK: Associated Objects
 
-// MARK: - Custom AutoreleasePool
-
-internal func cs_autoreleasepool(@noescape closure: () -> Void) {
-    
-    autoreleasepool(closure)
-}
-
-internal func cs_autoreleasepool<T>(@noescape closure: () -> T) -> T {
-    
-    var closureValue: T!
-    autoreleasepool {
-        
-        closureValue = closure()
-    }
-    
-    return closureValue
-}
-
-internal func cs_autoreleasepool<T>(@noescape closure: () throws -> T) throws -> T {
-    
-    var closureValue: T!
-    var closureError: ErrorType?
-    autoreleasepool {
-        
-        do {
-            
-            closureValue = try closure()
-        }
-        catch {
-            
-            closureError = error
-        }
-    }
-    
-    if let closureError = closureError {
-        
-        throw closureError
-    }
-    return closureValue
-}
-
-internal func cs_autoreleasepool(@noescape closure: () throws -> Void) throws {
-    
-    var closureError: ErrorType?
-    autoreleasepool {
-        
-        do {
-            
-            try closure()
-        }
-        catch {
-            
-            closureError = error
-        }
-    }
-    
-    if let closureError = closureError {
-        
-        throw closureError
-    }
-}
-
-internal func cs_getAssociatedObjectForKey<T: AnyObject>(key: UnsafePointer<Void>, inObject object: AnyObject) -> T? {
+internal func cs_getAssociatedObjectForKey<T: AnyObject>(_ key: UnsafeRawPointer, inObject object: Any) -> T? {
     
     switch objc_getAssociatedObject(object, key) {
         
@@ -103,17 +42,17 @@ internal func cs_getAssociatedObjectForKey<T: AnyObject>(key: UnsafePointer<Void
     }
 }
 
-internal func cs_setAssociatedRetainedObject<T: AnyObject>(associatedObject: T?, forKey key: UnsafePointer<Void>, inObject object: AnyObject) {
+internal func cs_setAssociatedRetainedObject<T: AnyObject>(_ associatedObject: T?, forKey key: UnsafeRawPointer, inObject object: Any) {
     
     objc_setAssociatedObject(object, key, associatedObject, .OBJC_ASSOCIATION_RETAIN_NONATOMIC)
 }
 
-internal func cs_setAssociatedCopiedObject<T: AnyObject>(associatedObject: T?, forKey key: UnsafePointer<Void>, inObject object: AnyObject) {
+internal func cs_setAssociatedCopiedObject<T: AnyObject>(_ associatedObject: T?, forKey key: UnsafeRawPointer, inObject object: Any) {
     
     objc_setAssociatedObject(object, key, associatedObject, .OBJC_ASSOCIATION_COPY_NONATOMIC)
 }
 
-internal func cs_setAssociatedWeakObject<T: AnyObject>(associatedObject: T?, forKey key: UnsafePointer<Void>, inObject object: AnyObject) {
+internal func cs_setAssociatedWeakObject<T: AnyObject>(_ associatedObject: T?, forKey key: UnsafeRawPointer, inObject object: Any) {
     
     if let associatedObject = associatedObject {
         
@@ -128,22 +67,27 @@ internal func cs_setAssociatedWeakObject<T: AnyObject>(associatedObject: T?, for
 
 // MARK: Printing Utilities
 
-internal func cs_typeName<T>(value: T) -> String {
+internal func cs_typeName<T>(_ value: T) -> String {
     
-    return "'\(String(reflecting: value.dynamicType))'"
+    return "'\(String(reflecting: type(of: value)))'"
 }
 
-internal func cs_typeName<T>(value: T.Type) -> String {
+internal func cs_typeName<T>(_ value: T.Type) -> String {
     
     return "'\(value)'"
 }
 
-internal func cs_typeName(value: AnyClass) -> String {
+internal func cs_typeName(_ value: AnyClass) -> String {
     
     return "'\(value)'"
 }
 
-internal func cs_typeName(name: String?) -> String {
+internal func cs_typeName(_ name: String) -> String {
+    
+    return "<\(name)>"
+}
+
+internal func cs_typeName(_ name: String?) -> String {
     
     return "<\(name ?? "unknown")>"
 }

Sources/Internal/MigrationManager.swift

@@ -29,15 +29,15 @@ import CoreData
 
 // MARK: - MigrationManager
 
-internal final class MigrationManager: NSMigrationManager, NSProgressReporting {
+internal final class MigrationManager: NSMigrationManager, ProgressReporting {
     
     // MARK: NSObject
     
-    override func didChangeValueForKey(key: String) {
+    override func didChangeValue(forKey key: String) {
         
-        super.didChangeValueForKey(key)
+        super.didChangeValue(forKey: key)
         
-        guard key == "migrationProgress" else {
+        guard key == #keyPath(NSMigrationManager.migrationProgress) else {
             
             return
         }
@@ -48,7 +48,7 @@ internal final class MigrationManager: NSMigrationManager, NSProgressReporting {
     
     // MARK: NSMigrationManager
 
-    init(sourceModel: NSManagedObjectModel, destinationModel: NSManagedObjectModel, progress: NSProgress) {
+    init(sourceModel: NSManagedObjectModel, destinationModel: NSManagedObjectModel, progress: Progress) {
         
         self.progress = progress
         
@@ -56,7 +56,7 @@ internal final class MigrationManager: NSMigrationManager, NSProgressReporting {
     }
     
 
-    // MARK: NSProgressReporting
+    // MARK: ProgressReporting
     
-    let progress: NSProgress
+    let progress: Progress
 }

Sources/Internal/NSManagedObject+Logging.swift

@@ -0,0 +1,241 @@
+//
+//  NSManagedObject+Logging.swift
+//  CoreStore
+//
+//  Copyright © 2017 John Rommel Estropia
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all
+//  copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+//  SOFTWARE.
+//
+
+import Foundation
+import CoreData
+
+
+// MARK: - NSManagedObject
+
+internal extension NSManagedObject {
+    
+    // TODO: test before release (rolled back)
+//    @nonobjc
+//    internal static func cs_swizzleMethodsForLogging() {
+//        
+//        struct Static {
+//            
+//            static let isSwizzled = Static.swizzle()
+//            
+//            private static func swizzle() -> Bool {
+//                
+//                NSManagedObject.cs_swizzle(
+//                    original: #selector(NSManagedObject.willAccessValue(forKey:)),
+//                    proxy: #selector(NSManagedObject.cs_willAccessValue(forKey:))
+//                )
+//                NSManagedObject.cs_swizzle(
+//                    original: #selector(NSManagedObject.willChangeValue(forKey:)),
+//                    proxy: #selector(NSManagedObject.cs_willChangeValue(forKey:))
+//                )
+//                NSManagedObject.cs_swizzle(
+//                    original: #selector(NSManagedObject.willChangeValue(forKey:withSetMutation:using:)),
+//                    proxy: #selector(NSManagedObject.cs_willChangeValue(forKey:withSetMutation:using:))
+//                )
+//                return true
+//            }
+//        }
+//        assert(Static.isSwizzled)
+//    }
+//    
+//    @nonobjc
+//    private static func cs_swizzle(original originalSelector: Selector, proxy swizzledSelector: Selector) {
+//        
+//        let originalMethod = class_getInstanceMethod(NSManagedObject.self, originalSelector)
+//        let swizzledMethod = class_getInstanceMethod(NSManagedObject.self, swizzledSelector)
+//        let didAddMethod = class_addMethod(
+//            NSManagedObject.self,
+//            originalSelector,
+//            method_getImplementation(swizzledMethod),
+//            method_getTypeEncoding(swizzledMethod)
+//        )
+//        if didAddMethod {
+//            
+//            class_replaceMethod(
+//                NSManagedObject.self,
+//                swizzledSelector,
+//                method_getImplementation(originalMethod),
+//                method_getTypeEncoding(originalMethod)
+//            )
+//        }
+//        else {
+//            
+//            method_exchangeImplementations(originalMethod, swizzledMethod)
+//        }
+//    }
+//    
+//    private dynamic func cs_willAccessValue(forKey key: String?) {
+//        
+//        self.cs_willAccessValue(forKey: key)
+//        
+//        guard CoreStore.logger.enableObjectConcurrencyDebugging else {
+//            
+//            return
+//        }
+//        
+//        guard let context = self.managedObjectContext else {
+//            
+//            CoreStore.log(
+//                .warning,
+//                message: "Attempted to access the \"\(key ?? "")\" key of an object of type \(cs_typeName(self)) after has been deleted from its \(cs_typeName(NSManagedObjectContext.self))."
+//            )
+//            return
+//        }
+//        if context.isTransactionContext {
+//            
+//            guard let transaction = context.parentTransaction else {
+//                
+//                CoreStore.log(
+//                    .warning,
+//                    message: "Attempted to access the \"\(key ?? "")\" key of an object of type \(cs_typeName(self)) after has been deleted from its transaction."
+//                )
+//                return
+//            }
+//            CoreStore.assert(
+//                transaction.isRunningInAllowedQueue(),
+//                "Attempted to access the \"\(key ?? "")\" key of an object of type \(cs_typeName(self)) outside its transaction's designated queue."
+//            )
+//            return
+//        }
+//        if context.isDataStackContext {
+//            
+//            guard context.parentStack != nil else {
+//                
+//                CoreStore.log(
+//                    .warning,
+//                    message: "Attempted to access the \"\(key ?? "")\" key of an object of type \(cs_typeName(self)) after has been deleted from its \(cs_typeName(DataStack.self)).")
+//                return
+//            }
+//            CoreStore.assert(
+//                Thread.isMainThread,
+//                "Attempted to access the \"\(key ?? "")\" key of an object of type \(cs_typeName(self)) outside the main thread."
+//            )
+//            return
+//        }
+//    }
+//    
+//    private dynamic func cs_willChangeValue(forKey key: String?) {
+//        
+//        self.cs_willChangeValue(forKey: key)
+//        
+//        guard CoreStore.logger.enableObjectConcurrencyDebugging else {
+//            
+//            return
+//        }
+//        
+//        guard let context = self.managedObjectContext else {
+//            
+//            CoreStore.log(
+//                .warning,
+//                message: "Attempted to change the \"\(key ?? "")\" of an object of type \(cs_typeName(self)) after has been deleted from its \(cs_typeName(NSManagedObjectContext.self))."
+//            )
+//            return
+//        }
+//        if context.isTransactionContext {
+//            
+//            guard let transaction = context.parentTransaction else {
+//                
+//                CoreStore.log(
+//                    .warning,
+//                    message: "Attempted to change the \"\(key ?? "")\" of an object of type \(cs_typeName(self)) after has been deleted from its transaction."
+//                )
+//                return
+//            }
+//            CoreStore.assert(
+//                transaction.isRunningInAllowedQueue(),
+//                "Attempted to change the \"\(key ?? "")\" of an object of type \(cs_typeName(self)) outside its transaction's designated queue."
+//            )
+//            return
+//        }
+//        if context.isDataStackContext {
+//            
+//            guard context.parentStack != nil else {
+//                
+//                CoreStore.log(
+//                    .warning,
+//                    message: "Attempted to change the \"\(key ?? "")\" of an object of type \(cs_typeName(self)) after has been deleted from its \(cs_typeName(DataStack.self)).")
+//                return
+//            }
+//            CoreStore.assert(
+//                Thread.isMainThread,
+//                "Attempted to change the \"\(key ?? "")\" of an object of type \(cs_typeName(self)) outside the main thread."
+//            )
+//            return
+//        }
+//    }
+//    
+//    private dynamic func cs_willChangeValue(forKey inKey: String, withSetMutation inMutationKind: NSKeyValueSetMutationKind, using inObjects: Set<AnyHashable>) {
+//        
+//        self.cs_willChangeValue(
+//            forKey: inKey,
+//            withSetMutation: inMutationKind,
+//            using: inObjects
+//        )
+//        
+//        guard CoreStore.logger.enableObjectConcurrencyDebugging else {
+//            
+//            return
+//        }
+//        
+//        guard let context = self.managedObjectContext else {
+//            
+//            CoreStore.log(
+//                .warning,
+//                message: "Attempted to mutate the \"\(inKey)\" of an object of type \(cs_typeName(self)) after has been deleted from its \(cs_typeName(NSManagedObjectContext.self))."
+//            )
+//            return
+//        }
+//        if context.isTransactionContext {
+//            
+//            guard let transaction = context.parentTransaction else {
+//                
+//                CoreStore.log(
+//                    .warning,
+//                    message: "Attempted to mutate the \"\(inKey)\" of an object of type \(cs_typeName(self)) after has been deleted from its transaction."
+//                )
+//                return
+//            }
+//            CoreStore.assert(
+//                transaction.isRunningInAllowedQueue(),
+//                "Attempted to mutate the \"\(inKey)\" of an object of type \(cs_typeName(self)) outside its transaction's designated queue."
+//            )
+//            return
+//        }
+//        if context.isDataStackContext {
+//            
+//            guard context.parentStack != nil else {
+//                
+//                CoreStore.log(
+//                    .warning,
+//                    message: "Attempted to mutate the \"\(inKey)\" of an object of type \(cs_typeName(self)) after has been deleted from its \(cs_typeName(DataStack.self)).")
+//                return
+//            }
+//            CoreStore.assert(
+//                Thread.isMainThread,
+//                "Attempted to mutate the \"\(inKey)\" of an object of type \(cs_typeName(self)) outside the main thread."
+//            )
+//            return
+//        }
+//    }
+}

Sources/Internal/NSManagedObjectContext+CoreStore.swift

@@ -25,9 +25,6 @@
 
 import Foundation
 import CoreData
-#if USE_FRAMEWORKS
-    import GCDKit
-#endif
 
 
 // MARK: - NSManagedObjectContext
@@ -50,7 +47,7 @@ internal extension NSManagedObjectContext {
         set {
             
             cs_setAssociatedCopiedObject(
-                NSNumber(bool: newValue),
+                NSNumber(value: newValue),
                 forKey: &PropertyKeys.shouldCascadeSavesToParent,
                 inObject: self
             )
@@ -58,40 +55,30 @@ internal extension NSManagedObjectContext {
     }
     
     @nonobjc
-    internal func entityDescriptionForEntityType(entity: NSManagedObject.Type) -> NSEntityDescription? {
+    internal func entityDescriptionForEntityType(_ entity: NSManagedObject.Type) -> NSEntityDescription? {
         
         return self.entityDescriptionForEntityClass(entity)
     }
     
     @nonobjc
-    internal func entityDescriptionForEntityClass(entity: AnyClass) -> NSEntityDescription? {
+    internal func entityDescriptionForEntityClass(_ entity: AnyClass) -> NSEntityDescription? {
         
         guard let entityName = self.parentStack?.entityNameForEntityClass(entity) else {
             
             return nil
         }
-        return NSEntityDescription.entityForName(
-            entityName,
-            inManagedObjectContext: self
+        return NSEntityDescription.entity(
+            forEntityName: entityName,
+            in: self
         )
     }
     
     @nonobjc
-    internal func setupForCoreStoreWithContextName(contextName: String) {
-
-        #if USE_FRAMEWORKS
-            
-            self.name = contextName
-        #else
-            
-            if #available(iOS 8.0, *) {
-                
-                self.name = contextName
-            }
-        #endif
+    internal func setupForCoreStoreWithContextName(_ contextName: String) {
         
+        self.name = contextName
         self.observerForWillSaveNotification = NotificationObserver(
-            notificationName: NSManagedObjectContextWillSaveNotification,
+            notificationName: NSNotification.Name.NSManagedObjectContextWillSave,
             object: self,
             closure: { (note) -> Void in
                 
@@ -105,7 +92,7 @@ internal extension NSManagedObjectContext {
                 
                 do {
                     
-                    try context.obtainPermanentIDsForObjects(Array(insertedObjects))
+                    try context.obtainPermanentIDs(for: Array(insertedObjects))
                 }
                 catch {
                     

Sources/Internal/NSManagedObjectContext+Querying.swift

@@ -29,20 +29,20 @@ import CoreData
 
 // MARK: - NSManagedObjectContext
 
-internal extension NSManagedObjectContext {
+extension NSManagedObjectContext: FetchableSource, QueryableSource {
     
-    // MARK: Internal: Fetch Existing
+    // MARK: FetchableSource
     
     @nonobjc
-    internal func fetchExisting<T: NSManagedObject>(object: T) -> T? {
+    public func fetchExisting<T: NSManagedObject>(_ object: T) -> T? {
         
-        if object.objectID.temporaryID {
+        if object.objectID.isTemporaryID {
             
             do {
                 
                 try withExtendedLifetime(self) { (context: NSManagedObjectContext) -> Void in
                     
-                    try context.obtainPermanentIDsForObjects([object])
+                    try context.obtainPermanentIDs(for: [object])
                 }
             }
             catch {
@@ -54,10 +54,9 @@ internal extension NSManagedObjectContext {
                 return nil
             }
         }
-        
         do {
             
-            let existingObject = try self.existingObjectWithID(object.objectID)
+            let existingObject = try self.existingObject(with: object.objectID)
             return (existingObject as! T)
         }
         catch {
@@ -70,125 +69,86 @@ internal extension NSManagedObjectContext {
         }
     }
     
-    
-    // MARK: Internal: Fetch One
+    @nonobjc
+    public func fetchExisting<T: NSManagedObject>(_ objectID: NSManagedObjectID) -> T? {
+        
+        do {
+            
+            return (try self.existingObject(with: objectID) as! T)
+        }
+        catch _ {
+            
+            return nil
+        }
+    }
     
     @nonobjc
-    internal func fetchOne<T: NSManagedObject>(from: From<T>, _ fetchClauses: FetchClause...) -> T? {
+    public func fetchExisting<T: NSManagedObject, S: Sequence>(_ objects: S) -> [T] where S.Iterator.Element == T {
+        
+        return objects.flatMap { (try? self.existingObject(with: $0.objectID)) as? T }
+    }
+    
+    @nonobjc
+    public func fetchExisting<T: NSManagedObject, S: Sequence>(_ objectIDs: S) -> [T] where S.Iterator.Element == NSManagedObjectID {
+        
+        return objectIDs.flatMap { (try? self.existingObject(with: $0)) as? T }
+    }
+    
+    @nonobjc
+    public func fetchOne<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> T? {
+        
         
         return self.fetchOne(from, fetchClauses)
     }
     
     @nonobjc
-    internal func fetchOne<T: NSManagedObject>(from: From<T>, _ fetchClauses: [FetchClause]) -> T? {
+    public func fetchOne<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> T? {
         
         let fetchRequest = CoreStoreFetchRequest()
         let storeFound = from.applyToFetchRequest(fetchRequest, context: self)
         
         fetchRequest.fetchLimit = 1
-        fetchRequest.resultType = .ManagedObjectResultType
+        fetchRequest.resultType = .managedObjectResultType
         fetchClauses.forEach { $0.applyToFetchRequest(fetchRequest) }
         
         guard storeFound else {
             
             return nil
         }
-        return self.fetchOne(fetchRequest)
+        return self.fetchOne(fetchRequest.dynamicCast())
     }
     
     @nonobjc
-    internal func fetchOne<T: NSManagedObject>(fetchRequest: NSFetchRequest) -> T? {
-        
-        var fetchResults: [T]?
-        var fetchError: ErrorType?
-        self.performBlockAndWait {
-            
-            do {
-                
-                fetchResults = try self.executeFetchRequest(fetchRequest) as? [T]
-            }
-            catch {
-                
-                fetchError = error
-            }
-        }
-        if fetchResults == nil {
-            
-            CoreStore.log(
-                CoreStoreError(fetchError),
-                "Failed executing fetch request."
-            )
-            return nil
-        }
-        
-        return fetchResults?.first
-    }
-    
-    
-    // MARK: Internal: Fetch All
-    
-    @nonobjc
-    internal func fetchAll<T: NSManagedObject>(from: From<T>, _ fetchClauses: FetchClause...) -> [T]? {
+    public func fetchAll<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> [T]? {
         
         return self.fetchAll(from, fetchClauses)
     }
     
     @nonobjc
-    internal func fetchAll<T: NSManagedObject>(from: From<T>, _ fetchClauses: [FetchClause]) -> [T]? {
+    public func fetchAll<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> [T]? {
         
         let fetchRequest = CoreStoreFetchRequest()
         let storeFound = from.applyToFetchRequest(fetchRequest, context: self)
         
         fetchRequest.fetchLimit = 0
-        fetchRequest.resultType = .ManagedObjectResultType
+        fetchRequest.resultType = .managedObjectResultType
         fetchClauses.forEach { $0.applyToFetchRequest(fetchRequest) }
         
         guard storeFound else {
             
             return nil
         }
-        return self.fetchAll(fetchRequest)
+        return self.fetchAll(fetchRequest.dynamicCast())
     }
     
     @nonobjc
-    internal func fetchAll<T: NSManagedObject>(fetchRequest: NSFetchRequest) -> [T]? {
-        
-        var fetchResults: [T]?
-        var fetchError: ErrorType?
-        self.performBlockAndWait {
-            
-            do {
-                
-                fetchResults = try self.executeFetchRequest(fetchRequest) as? [T]
-            }
-            catch {
-                
-                fetchError = error
-            }
-        }
-        if fetchResults == nil {
-            
-            CoreStore.log(
-                CoreStoreError(fetchError),
-                "Failed executing fetch request."
-            )
-            return nil
-        }
-        
-        return fetchResults
-    }
-    
-    
-    // MARK: Internal: Count
-    
-    @nonobjc
-    internal func fetchCount<T: NSManagedObject>(from: From<T>, _ fetchClauses: FetchClause...) -> Int? {
+    public func fetchCount<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> Int? {
     
         return self.fetchCount(from, fetchClauses)
     }
     
     @nonobjc
-    internal func fetchCount<T: NSManagedObject>(from: From<T>, _ fetchClauses: [FetchClause]) -> Int? {
+    public func fetchCount<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> Int? {
         
         let fetchRequest = CoreStoreFetchRequest()
         let storeFound = from.applyToFetchRequest(fetchRequest, context: self)
@@ -198,120 +158,65 @@ internal extension NSManagedObjectContext {
             
             return nil
         }
-        return self.fetchCount(fetchRequest)
+        return self.fetchCount(fetchRequest.dynamicCast())
     }
     
     @nonobjc
-    internal func fetchCount(fetchRequest: NSFetchRequest) -> Int? {
-        
-        var count = 0
-        var error: NSError?
-        self.performBlockAndWait {
-            
-            count = self.countForFetchRequest(fetchRequest, error: &error)
-        }
-        if count == NSNotFound {
-            
-            CoreStore.log(
-                CoreStoreError(error),
-                "Failed executing fetch request."
-            )
-            return nil
-        }
-        
-        return count
-    }
-    
-    
-    // MARK: Internal: Object ID
-    
-    @nonobjc
-    internal func fetchObjectID<T: NSManagedObject>(from: From<T>, _ fetchClauses: FetchClause...) -> NSManagedObjectID? {
+    public func fetchObjectID<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> NSManagedObjectID? {
         
         return self.fetchObjectID(from, fetchClauses)
     }
     
     @nonobjc
-    internal func fetchObjectID<T: NSManagedObject>(from: From<T>, _ fetchClauses: [FetchClause]) -> NSManagedObjectID? {
+    public func fetchObjectID<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> NSManagedObjectID? {
         
         let fetchRequest = CoreStoreFetchRequest()
         let storeFound = from.applyToFetchRequest(fetchRequest, context: self)
         
         fetchRequest.fetchLimit = 1
-        fetchRequest.resultType = .ManagedObjectIDResultType
+        fetchRequest.resultType = .managedObjectIDResultType
         fetchClauses.forEach { $0.applyToFetchRequest(fetchRequest) }
         
         guard storeFound else {
             
             return nil
         }
-        return self.fetchObjectID(fetchRequest)
+        return self.fetchObjectID(fetchRequest.dynamicCast())
     }
     
     @nonobjc
-    internal func fetchObjectID(fetchRequest: NSFetchRequest) -> NSManagedObjectID? {
-        
-        var fetchResults: [NSManagedObjectID]?
-        var fetchError: ErrorType?
-        self.performBlockAndWait {
-            
-            do {
-                
-                fetchResults = try self.executeFetchRequest(fetchRequest) as? [NSManagedObjectID]
-            }
-            catch {
-                
-                fetchError = error
-            }
-        }
-        if fetchResults == nil {
-            
-            CoreStore.log(
-                CoreStoreError(fetchError),
-                "Failed executing fetch request."
-            )
-            return nil
-        }
-        
-        return fetchResults?.first
-    }
-    
-    
-    // MARK: Internal: Object IDs
-    
-    @nonobjc
-    internal func fetchObjectIDs<T: NSManagedObject>(from: From<T>, _ fetchClauses: FetchClause...) -> [NSManagedObjectID]? {
+    public func fetchObjectIDs<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> [NSManagedObjectID]? {
         
         return self.fetchObjectIDs(from, fetchClauses)
     }
     
     @nonobjc
-    internal func fetchObjectIDs<T: NSManagedObject>(from: From<T>, _ fetchClauses: [FetchClause]) -> [NSManagedObjectID]? {
+    public func fetchObjectIDs<T: NSManagedObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> [NSManagedObjectID]? {
         
         let fetchRequest = CoreStoreFetchRequest()
         let storeFound = from.applyToFetchRequest(fetchRequest, context: self)
         
         fetchRequest.fetchLimit = 0
-        fetchRequest.resultType = .ManagedObjectIDResultType
+        fetchRequest.resultType = .managedObjectIDResultType
         fetchClauses.forEach { $0.applyToFetchRequest(fetchRequest) }
         
         guard storeFound else {
             
             return nil
         }
-        return self.fetchObjectIDs(fetchRequest)
+        return self.fetchObjectIDs(fetchRequest.dynamicCast())
     }
     
     @nonobjc
-    internal func fetchObjectIDs(fetchRequest: NSFetchRequest) -> [NSManagedObjectID]? {
+    internal func fetchObjectIDs(_ fetchRequest: NSFetchRequest<NSManagedObjectID>) -> [NSManagedObjectID]? {
         
         var fetchResults: [NSManagedObjectID]?
-        var fetchError: ErrorType?
-        self.performBlockAndWait {
+        var fetchError: Error?
+        self.performAndWait {
             
             do {
                 
-                fetchResults = try self.executeFetchRequest(fetchRequest) as? [NSManagedObjectID]
+                fetchResults = try self.fetch(fetchRequest)
             }
             catch {
                 
@@ -326,85 +231,20 @@ internal extension NSManagedObjectContext {
             )
             return nil
         }
-        
         return fetchResults
     }
     
     
-    // MARK: Internal: Delete All
+    // MARK: QueryableSource
     
     @nonobjc
-    internal func deleteAll<T: NSManagedObject>(from: From<T>, _ deleteClauses: DeleteClause...) -> Int? {
-        
-        return self.deleteAll(from, deleteClauses)
-    }
-    
-    @nonobjc
-    internal func deleteAll<T: NSManagedObject>(from: From<T>, _ deleteClauses: [DeleteClause]) -> Int? {
-        
-        let fetchRequest = CoreStoreFetchRequest()
-        let storeFound = from.applyToFetchRequest(fetchRequest, context: self)
-        
-        fetchRequest.fetchLimit = 0
-        fetchRequest.resultType = .ManagedObjectResultType
-        fetchRequest.returnsObjectsAsFaults = true
-        fetchRequest.includesPropertyValues = false
-        deleteClauses.forEach { $0.applyToFetchRequest(fetchRequest) }
-        
-        guard storeFound else {
-            
-            return nil
-        }
-        return self.deleteAll(fetchRequest)
-    }
-    
-    @nonobjc
-    internal func deleteAll(fetchRequest: NSFetchRequest) -> Int? {
-        
-        var numberOfDeletedObjects: Int?
-        var fetchError: ErrorType?
-        self.performBlockAndWait {
-            
-            cs_autoreleasepool {
-                
-                do {
-                    
-                    let fetchResults = try self.executeFetchRequest(fetchRequest) as? [NSManagedObject] ?? []
-                    for object in fetchResults {
-                        
-                        self.deleteObject(object)
-                    }
-                    numberOfDeletedObjects = fetchResults.count
-                }
-                catch {
-                    
-                    fetchError = error
-                }
-            }
-        }
-        if numberOfDeletedObjects == nil {
-            
-            CoreStore.log(
-                CoreStoreError(fetchError),
-                "Failed executing fetch request."
-            )
-            return nil
-        }
-        
-        return numberOfDeletedObjects
-    }
-    
-    
-    // MARK: Internal: Value
-    
-    @nonobjc
-    internal func queryValue<T: NSManagedObject, U: SelectValueResultType>(from: From<T>, _ selectClause: Select<U>, _ queryClauses: QueryClause...) -> U? {
+    public func queryValue<T: NSManagedObject, U: SelectValueResultType>(_ from: From<T>, _ selectClause: Select<U>, _ queryClauses: QueryClause...) -> U? {
         
         return self.queryValue(from, selectClause, queryClauses)
     }
     
     @nonobjc
-    internal func queryValue<T: NSManagedObject, U: SelectValueResultType>(from: From<T>, _ selectClause: Select<U>, _ queryClauses: [QueryClause]) -> U? {
+    public func queryValue<T: NSManagedObject, U: SelectValueResultType>(_ from: From<T>, _ selectClause: Select<U>, _ queryClauses: [QueryClause]) -> U? {
         
         let fetchRequest = CoreStoreFetchRequest()
         let storeFound = from.applyToFetchRequest(fetchRequest, context: self)
@@ -423,82 +263,13 @@ internal extension NSManagedObjectContext {
     }
     
     @nonobjc
-    internal func queryValue<U: SelectValueResultType>(selectTerms: [SelectTerm], fetchRequest: NSFetchRequest) -> U? {
-        
-        var fetchResults: [AnyObject]?
-        var fetchError: ErrorType?
-        self.performBlockAndWait {
-            
-            do {
-                
-                fetchResults = try self.executeFetchRequest(fetchRequest)
-            }
-            catch {
-                
-                fetchError = error
-            }
-        }
-        if let fetchResults = fetchResults {
-            
-            if let rawResult = fetchResults.first as? NSDictionary,
-                let rawObject: AnyObject = rawResult[selectTerms.keyPathForFirstSelectTerm()] {
-                
-                return Select<U>.ReturnType.fromResultObject(rawObject)
-            }
-            return nil
-        }
-        
-        CoreStore.log(
-            CoreStoreError(fetchError),
-            "Failed executing fetch request."
-        )
-        return nil
-    }
-    
-    @nonobjc
-    internal func queryValue(selectTerms: [SelectTerm], fetchRequest: NSFetchRequest) -> AnyObject? {
-        
-        var fetchResults: [AnyObject]?
-        var fetchError: ErrorType?
-        self.performBlockAndWait {
-            
-            do {
-                
-                fetchResults = try self.executeFetchRequest(fetchRequest)
-            }
-            catch {
-                
-                fetchError = error
-            }
-        }
-        if let fetchResults = fetchResults {
-            
-            if let rawResult = fetchResults.first as? NSDictionary,
-                let rawObject: AnyObject = rawResult[selectTerms.keyPathForFirstSelectTerm()] {
-                
-                return rawObject
-            }
-            return nil
-        }
-        
-        CoreStore.log(
-            CoreStoreError(fetchError),
-            "Failed executing fetch request."
-        )
-        return nil
-    }
-    
-    
-    // MARK: Internal: Attributes
-    
-    @nonobjc
-    internal func queryAttributes<T: NSManagedObject>(from: From<T>, _ selectClause: Select<NSDictionary>, _ queryClauses: QueryClause...) -> [[NSString: AnyObject]]? {
+    public func queryAttributes<T: NSManagedObject>(_ from: From<T>, _ selectClause: Select<NSDictionary>, _ queryClauses: QueryClause...) -> [[String: Any]]? {
         
         return self.queryAttributes(from, selectClause, queryClauses)
     }
     
     @nonobjc
-    internal func queryAttributes<T: NSManagedObject>(from: From<T>, _ selectClause: Select<NSDictionary>, _ queryClauses: [QueryClause]) -> [[NSString: AnyObject]]? {
+    public func queryAttributes<T: NSManagedObject>(_ from: From<T>, _ selectClause: Select<NSDictionary>, _ queryClauses: [QueryClause]) -> [[String: Any]]? {
         
         let fetchRequest = CoreStoreFetchRequest()
         let storeFound = from.applyToFetchRequest(fetchRequest, context: self)
@@ -515,16 +286,210 @@ internal extension NSManagedObjectContext {
         return self.queryAttributes(fetchRequest)
     }
     
+    
+    // MARK: FetchableSource, QueryableSource
+    
     @nonobjc
-    internal func queryAttributes(fetchRequest: NSFetchRequest) -> [[NSString: AnyObject]]? {
+    public func internalContext() -> NSManagedObjectContext {
         
-        var fetchResults: [AnyObject]?
-        var fetchError: ErrorType?
-        self.performBlockAndWait {
+        return self
+    }
+}
+
+
+// MARK: - NSManagedObjectContext (Internal)
+
+internal extension NSManagedObjectContext {
+    
+    // MARK: Fetching
+    
+    @nonobjc
+    internal func fetchOne<T: NSManagedObject>(_ fetchRequest: NSFetchRequest<T>) -> T? {
+        
+        var fetchResults: [T]?
+        var fetchError: Error?
+        self.performAndWait {
             
             do {
                 
-                fetchResults = try self.executeFetchRequest(fetchRequest)
+                fetchResults = try self.fetch(fetchRequest)
+            }
+            catch {
+                
+                fetchError = error
+            }
+        }
+        if fetchResults == nil {
+            
+            CoreStore.log(
+                CoreStoreError(fetchError),
+                "Failed executing fetch request."
+            )
+            return nil
+        }
+        return fetchResults?.first
+    }
+    
+    @nonobjc
+    internal func fetchAll<T: NSManagedObject>(_ fetchRequest: NSFetchRequest<T>) -> [T]? {
+        
+        var fetchResults: [T]?
+        var fetchError: Error?
+        self.performAndWait {
+            
+            do {
+                
+                fetchResults = try self.fetch(fetchRequest)
+            }
+            catch {
+                
+                fetchError = error
+            }
+        }
+        if fetchResults == nil {
+            
+            CoreStore.log(
+                CoreStoreError(fetchError),
+                "Failed executing fetch request."
+            )
+            return nil
+        }
+        return fetchResults
+    }
+    
+    @nonobjc
+    internal func fetchCount(_ fetchRequest: NSFetchRequest<NSFetchRequestResult>) -> Int? {
+        
+        var count = 0
+        var countError: Error?
+        self.performAndWait {
+            
+            do {
+                
+                count = try self.count(for: fetchRequest)
+            }
+            catch {
+                
+                countError = error
+            }
+        }
+        if count == NSNotFound {
+            
+            CoreStore.log(
+                CoreStoreError(countError),
+                "Failed executing count request."
+            )
+            return nil
+        }
+        return count
+    }
+    
+    @nonobjc
+    internal func fetchObjectID(_ fetchRequest: NSFetchRequest<NSManagedObjectID>) -> NSManagedObjectID? {
+        
+        var fetchResults: [NSManagedObjectID]?
+        var fetchError: Error?
+        self.performAndWait {
+            
+            do {
+                
+                fetchResults = try self.fetch(fetchRequest)
+            }
+            catch {
+                
+                fetchError = error
+            }
+        }
+        if fetchResults == nil {
+            
+            CoreStore.log(
+                CoreStoreError(fetchError),
+                "Failed executing fetch request."
+            )
+            return nil
+        }
+        return fetchResults?.first
+    }
+    
+    
+    // MARK: Querying
+    
+    @nonobjc
+    internal func queryValue<U: SelectValueResultType>(_ selectTerms: [SelectTerm], fetchRequest: NSFetchRequest<NSFetchRequestResult>) -> U? {
+        
+        var fetchResults: [Any]?
+        var fetchError: Error?
+        self.performAndWait {
+            
+            do {
+                
+                fetchResults = try self.fetch(fetchRequest)
+            }
+            catch {
+                
+                fetchError = error
+            }
+        }
+        if let fetchResults = fetchResults {
+            
+            if let rawResult = fetchResults.first as? NSDictionary,
+                let rawObject = rawResult[selectTerms.keyPathForFirstSelectTerm()] {
+                
+                return Select<U>.ReturnType.fromResultObject(rawObject)
+            }
+            return nil
+        }
+        
+        CoreStore.log(
+            CoreStoreError(fetchError),
+            "Failed executing fetch request."
+        )
+        return nil
+    }
+    
+    @nonobjc
+    internal func queryValue(_ selectTerms: [SelectTerm], fetchRequest: NSFetchRequest<NSFetchRequestResult>) -> Any? {
+        
+        var fetchResults: [Any]?
+        var fetchError: Error?
+        self.performAndWait {
+            
+            do {
+                
+                fetchResults = try self.fetch(fetchRequest)
+            }
+            catch {
+                
+                fetchError = error
+            }
+        }
+        if let fetchResults = fetchResults {
+            
+            if let rawResult = fetchResults.first as? NSDictionary,
+                let rawObject = rawResult[selectTerms.keyPathForFirstSelectTerm()] {
+                
+                return rawObject
+            }
+            return nil
+        }
+        
+        CoreStore.log(
+            CoreStoreError(fetchError),
+            "Failed executing fetch request."
+        )
+        return nil
+    }
+    
+    @nonobjc
+    internal func queryAttributes(_ fetchRequest: NSFetchRequest<NSFetchRequestResult>) -> [[String: Any]]? {
+        
+        var fetchResults: [Any]?
+        var fetchError: Error?
+        self.performAndWait {
+            
+            do {
+                
+                fetchResults = try self.fetch(fetchRequest)
             }
             catch {
                 
@@ -542,4 +507,67 @@ internal extension NSManagedObjectContext {
         )
         return nil
     }
+    
+    
+    // MARK: Deleting
+    
+    @nonobjc
+    internal func deleteAll<T: NSManagedObject>(_ from: From<T>, _ deleteClauses: DeleteClause...) -> Int? {
+        
+        return self.deleteAll(from, deleteClauses)
+    }
+    
+    @nonobjc
+    internal func deleteAll<T: NSManagedObject>(_ from: From<T>, _ deleteClauses: [DeleteClause]) -> Int? {
+        
+        let fetchRequest = CoreStoreFetchRequest()
+        let storeFound = from.applyToFetchRequest(fetchRequest, context: self)
+        
+        fetchRequest.fetchLimit = 0
+        fetchRequest.resultType = .managedObjectResultType
+        fetchRequest.returnsObjectsAsFaults = true
+        fetchRequest.includesPropertyValues = false
+        deleteClauses.forEach { $0.applyToFetchRequest(fetchRequest) }
+        
+        guard storeFound else {
+            
+            return nil
+        }
+        return self.deleteAll(fetchRequest.dynamicCast())
+    }
+    
+    @nonobjc
+    internal func deleteAll<T: NSManagedObject>(_ fetchRequest: NSFetchRequest<T>) -> Int? {
+        
+        var numberOfDeletedObjects: Int?
+        var fetchError: Error?
+        self.performAndWait {
+            
+            autoreleasepool {
+                
+                do {
+                    
+                    let fetchResults = try self.fetch(fetchRequest)
+                    for object in fetchResults {
+                        
+                        self.delete(object)
+                    }
+                    numberOfDeletedObjects = fetchResults.count
+                }
+                catch {
+                    
+                    fetchError = error
+                }
+            }
+        }
+        if numberOfDeletedObjects == nil {
+            
+            CoreStore.log(
+                CoreStoreError(fetchError),
+                "Failed executing fetch request."
+            )
+            return nil
+        }
+        return numberOfDeletedObjects
+    }
 }

Sources/Internal/NSManagedObjectContext+Setup.swift

@@ -38,7 +38,7 @@ internal extension NSManagedObjectContext {
         
         get {
             
-            if let parentContext = self.parentContext {
+            if let parentContext = self.parent {
                 
                 return parentContext.parentStack
             }
@@ -47,7 +47,7 @@ internal extension NSManagedObjectContext {
         }
         set {
             
-            guard self.parentContext == nil else {
+            guard self.parent == nil else {
                 
                 return
             }
@@ -61,9 +61,9 @@ internal extension NSManagedObjectContext {
     }
     
     @nonobjc
-    internal static func rootSavingContextForCoordinator(coordinator: NSPersistentStoreCoordinator) -> NSManagedObjectContext {
+    internal static func rootSavingContextForCoordinator(_ coordinator: NSPersistentStoreCoordinator) -> NSManagedObjectContext {
         
-        let context = NSManagedObjectContext(concurrencyType: .PrivateQueueConcurrencyType)
+        let context = NSManagedObjectContext(concurrencyType: .privateQueueConcurrencyType)
         context.persistentStoreCoordinator = coordinator
         context.mergePolicy = NSMergeByPropertyObjectTrumpMergePolicy
         context.undoManager = nil
@@ -72,18 +72,20 @@ internal extension NSManagedObjectContext {
         #if os(iOS) || os(OSX)
             
         context.observerForDidImportUbiquitousContentChangesNotification = NotificationObserver(
-            notificationName: NSPersistentStoreDidImportUbiquitousContentChangesNotification,
+            notificationName: NSNotification.Name.NSPersistentStoreDidImportUbiquitousContentChanges,
             object: coordinator,
             closure: { [weak context] (note) -> Void in
                 
-                context?.performBlock { () -> Void in
+                context?.perform { () -> Void in
                     
-                    let updatedObjectIDs = (note.userInfo?[NSUpdatedObjectsKey] as? Set<NSManagedObjectID>) ?? []
-                    for objectID in updatedObjectIDs {
+                    if let updatedObjectIDs = (note.userInfo?[NSUpdatedObjectsKey] as? Set<NSManagedObjectID>) {
                         
-                        context?.objectWithID(objectID).willAccessValueForKey(nil)
+                        for objectID in updatedObjectIDs {
+                            
+                            context?.object(with: objectID).willAccessValue(forKey: nil)
+                        }
                     }
-                    context?.mergeChangesFromContextDidSaveNotification(note)
+                    context?.mergeChanges(fromContextDidSave: note)
                 }
             }
         )
@@ -94,15 +96,15 @@ internal extension NSManagedObjectContext {
     }
     
     @nonobjc
-    internal static func mainContextForRootContext(rootContext: NSManagedObjectContext) -> NSManagedObjectContext {
+    internal static func mainContextForRootContext(_ rootContext: NSManagedObjectContext) -> NSManagedObjectContext {
         
-        let context = NSManagedObjectContext(concurrencyType: .MainQueueConcurrencyType)
-        context.parentContext = rootContext
+        let context = NSManagedObjectContext(concurrencyType: .mainQueueConcurrencyType)
+        context.parent = rootContext
         context.mergePolicy = NSRollbackMergePolicy
         context.undoManager = nil
         context.setupForCoreStoreWithContextName("com.corestore.maincontext")
         context.observerForDidSaveNotification = NotificationObserver(
-            notificationName: NSManagedObjectContextDidSaveNotification,
+            notificationName: NSNotification.Name.NSManagedObjectContextDidSave,
             object: rootContext,
             closure: { [weak context] (note) -> Void in
                 
@@ -113,21 +115,22 @@ internal extension NSManagedObjectContext {
                 }
                 let mergeChanges = { () -> Void in
                     
-                    let updatedObjects = (note.userInfo?[NSUpdatedObjectsKey] as? Set<NSManagedObject>) ?? []
-                    for object in updatedObjects {
+                    if let updatedObjects = (note.userInfo?[NSUpdatedObjectsKey] as? Set<NSManagedObject>) {
                         
-                        context.objectWithID(object.objectID).willAccessValueForKey(nil)
+                        for object in updatedObjects {
+                            
+                            context.object(with: object.objectID).willAccessValue(forKey: nil)
+                        }
                     }
-                    context.mergeChangesFromContextDidSaveNotification(note)
+                    context.mergeChanges(fromContextDidSave: note)
                 }
-                
                 if rootContext.isSavingSynchronously == true {
                     
-                    context.performBlockAndWait(mergeChanges)
+                    context.performAndWait(mergeChanges)
                 }
                 else {
                     
-                    context.performBlock(mergeChanges)
+                    context.perform(mergeChanges)
                 }
             }
         )

Sources/Internal/NSManagedObjectContext+Transaction.swift

@@ -25,9 +25,6 @@
 
 import Foundation
 import CoreData
-#if USE_FRAMEWORKS
-    import GCDKit
-#endif
 
 
 // MARK: - NSManagedObjectContext
@@ -70,13 +67,55 @@ internal extension NSManagedObjectContext {
         set {
             
             cs_setAssociatedWeakObject(
-                newValue.flatMap { NSNumber(bool: $0) },
+                newValue.flatMap { NSNumber(value: $0) },
                 forKey: &PropertyKeys.isSavingSynchronously,
                 inObject: self
             )
         }
     }
     
+    @nonobjc
+    internal var isTransactionContext: Bool {
+        
+        get {
+            
+            let value: NSNumber? = cs_getAssociatedObjectForKey(
+                &PropertyKeys.isTransactionContext,
+                inObject: self
+            )
+            return value?.boolValue == true
+        }
+        set {
+            
+            cs_setAssociatedCopiedObject(
+                NSNumber(value: newValue),
+                forKey: &PropertyKeys.isTransactionContext,
+                inObject: self
+            )
+        }
+    }
+    
+    @nonobjc
+    internal var isDataStackContext: Bool {
+        
+        get {
+            
+            let value: NSNumber? = cs_getAssociatedObjectForKey(
+                &PropertyKeys.isDataStackContext,
+                inObject: self
+            )
+            return value?.boolValue == true
+        }
+        set {
+            
+            cs_setAssociatedCopiedObject(
+                NSNumber(value: newValue),
+                forKey: &PropertyKeys.isDataStackContext,
+                inObject: self
+            )
+        }
+    }
+    
     @nonobjc
     internal func isRunningInAllowedQueue() -> Bool {
         
@@ -88,10 +127,10 @@ internal extension NSManagedObjectContext {
     }
     
     @nonobjc
-    internal func temporaryContextInTransactionWithConcurrencyType(concurrencyType: NSManagedObjectContextConcurrencyType) -> NSManagedObjectContext {
+    internal func temporaryContextInTransactionWithConcurrencyType(_ concurrencyType: NSManagedObjectContextConcurrencyType) -> NSManagedObjectContext {
         
         let context = NSManagedObjectContext(concurrencyType: concurrencyType)
-        context.parentContext = self
+        context.parent = self
         context.parentStack = self.parentStack
         context.setupForCoreStoreWithContextName("com.corestore.temporarycontext")
         context.shouldCascadeSavesToParent = (self.parentStack?.rootSavingContext == self)
@@ -101,11 +140,11 @@ internal extension NSManagedObjectContext {
     }
     
     @nonobjc
-    internal func saveSynchronously() -> SaveResult {
-        
+    internal func saveSynchronously(waitForMerge: Bool) -> SaveResult {
+      
         var result = SaveResult(hasChanges: false)
         
-        self.performBlockAndWait {
+        self.performAndWait {
             
             guard self.hasChanges else {
                 
@@ -114,7 +153,7 @@ internal extension NSManagedObjectContext {
             
             do {
                 
-                self.isSavingSynchronously = true
+                self.isSavingSynchronously = waitForMerge
                 try self.save()
                 self.isSavingSynchronously = nil
             }
@@ -123,20 +162,20 @@ internal extension NSManagedObjectContext {
                 let saveError = CoreStoreError(error)
                 CoreStore.log(
                     saveError,
-                    "Failed to save \(cs_typeName(NSManagedObjectContext))."
+                    "Failed to save \(cs_typeName(NSManagedObjectContext.self))."
                 )
                 result = SaveResult(saveError)
                 return
             }
             
-            if let parentContext = self.parentContext where self.shouldCascadeSavesToParent {
+            if let parentContext = self.parent, self.shouldCascadeSavesToParent {
                 
-                switch parentContext.saveSynchronously() {
+                switch parentContext.saveSynchronously(waitForMerge: waitForMerge) {
                     
-                case .Success:
+                case .success:
                     result = SaveResult(hasChanges: true)
                     
-                case .Failure(let error):
+                case .failure(let error):
                     result = SaveResult(error)
                 }
             }
@@ -150,15 +189,15 @@ internal extension NSManagedObjectContext {
     }
     
     @nonobjc
-    internal func saveAsynchronouslyWithCompletion(completion: ((result: SaveResult) -> Void) = { _ in }) {
+    internal func saveAsynchronouslyWithCompletion(_ completion: @escaping ((_ result: SaveResult) -> Void) = { _ in }) {
         
-        self.performBlock {
+        self.perform {
             
             guard self.hasChanges else {
                 
-                GCDQueue.Main.async {
+                DispatchQueue.main.async {
                     
-                    completion(result: SaveResult(hasChanges: false))
+                    completion(SaveResult(hasChanges: false))
                 }
                 return
             }
@@ -174,24 +213,24 @@ internal extension NSManagedObjectContext {
                 let saveError = CoreStoreError(error)
                 CoreStore.log(
                     saveError,
-                    "Failed to save \(cs_typeName(NSManagedObjectContext))."
+                    "Failed to save \(cs_typeName(NSManagedObjectContext.self))."
                 )
-                GCDQueue.Main.async {
+                DispatchQueue.main.async {
                     
-                    completion(result: SaveResult(saveError))
+                    completion(SaveResult(saveError))
                 }
                 return
             }
             
-            if let parentContext = self.parentContext where self.shouldCascadeSavesToParent {
+            if self.shouldCascadeSavesToParent, let parentContext = self.parent {
                 
                 parentContext.saveAsynchronouslyWithCompletion(completion)
             }
             else {
                 
-                GCDQueue.Main.async {
+                DispatchQueue.main.async {
                     
-                    completion(result: SaveResult(hasChanges: true))
+                    completion(SaveResult(hasChanges: true))
                 }
             }
         }
@@ -206,7 +245,7 @@ internal extension NSManagedObjectContext {
         }
         else {
             
-            self.registeredObjects.forEach { self.refreshObject($0, mergeChanges: true) }
+            self.registeredObjects.forEach { self.refresh($0, mergeChanges: true) }
         }
     }
     
@@ -217,5 +256,7 @@ internal extension NSManagedObjectContext {
         
         static var parentTransaction: Void?
         static var isSavingSynchronously: Void?
+        static var isTransactionContext: Void?
+        static var isDataStackContext: Void?
     }
 }

Sources/Internal/NSManagedObjectModel+Setup.swift

@@ -34,32 +34,37 @@ internal extension NSManagedObjectModel {
     // MARK: Internal
     
     @nonobjc
-    internal static func fromBundle(bundle: NSBundle, modelName: String, modelVersionHints: Set<String> = []) -> NSManagedObjectModel {
+    internal static func fromBundle(_ bundle: Bundle, modelName: String, modelVersionHints: Set<String> = []) -> NSManagedObjectModel {
         
-        guard let modelFilePath = bundle.pathForResource(modelName, ofType: "momd") else {
+        guard let modelFilePath = bundle.path(forResource: modelName, ofType: "momd") else {
             
-            CoreStore.abort("Could not find \"\(modelName).momd\" from the bundle. \(bundle)")
+            // For users migrating from very old Xcode versions: Old xcdatamodel files are not contained inside xcdatamodeld (with a "d"), and will thus fail this check. If that was the case, create a new xcdatamodeld file and copy all contents into the new model.
+            let foundModels = bundle
+                .paths(forResourcesOfType: "momd", inDirectory: nil)
+                .map({ ($0 as NSString).lastPathComponent })
+            CoreStore.abort("Could not find \"\(modelName).momd\" from the bundle \"\(bundle.bundleIdentifier ?? "<nil>")\". Other model files in bundle: \(foundModels.coreStoreDumpString)")
         }
         
-        let modelFileURL = NSURL(fileURLWithPath: modelFilePath)
-        let versionInfoPlistURL = modelFileURL.URLByAppendingPathComponent("VersionInfo.plist", isDirectory: false)
+        let modelFileURL = URL(fileURLWithPath: modelFilePath)
+        let versionInfoPlistURL = modelFileURL.appendingPathComponent("VersionInfo.plist", isDirectory: false)
         
-        guard let versionInfo = NSDictionary(contentsOfURL: versionInfoPlistURL),
+        guard let versionInfo = NSDictionary(contentsOf: versionInfoPlistURL),
             let versionHashes = versionInfo["NSManagedObjectModel_VersionHashes"] as? [String: AnyObject] else {
                 
-                CoreStore.abort("Could not load \(cs_typeName(NSManagedObjectModel)) metadata from path \"\(versionInfoPlistURL)\".")
+                CoreStore.abort("Could not load \(cs_typeName(NSManagedObjectModel.self)) metadata from path \"\(versionInfoPlistURL)\".")
         }
         
         let modelVersions = Set(versionHashes.keys)
         let currentModelVersion: String
-        if let plistModelVersion = versionInfo["NSManagedObjectModel_CurrentVersionName"] as? String where modelVersionHints.isEmpty || modelVersionHints.contains(plistModelVersion) {
+        if let plistModelVersion = versionInfo["NSManagedObjectModel_CurrentVersionName"] as? String,
+            modelVersionHints.isEmpty || modelVersionHints.contains(plistModelVersion) {
             
             currentModelVersion = plistModelVersion
         }
-        else if let resolvedVersion = modelVersions.intersect(modelVersionHints).first {
+        else if let resolvedVersion = modelVersions.intersection(modelVersionHints).first {
             
             CoreStore.log(
-                .Warning,
+                .warning,
                 message: "The MigrationChain leaf versions do not include the model file's current version. Resolving to version \"\(resolvedVersion)\"."
             )
             currentModelVersion = resolvedVersion
@@ -69,7 +74,7 @@ internal extension NSManagedObjectModel {
             if !modelVersionHints.isEmpty {
                 
                 CoreStore.log(
-                    .Warning,
+                    .warning,
                     message: "The MigrationChain leaf versions do not include any of the model file's embedded versions. Resolving to version \"\(resolvedVersion)\"."
                 )
             }
@@ -80,10 +85,10 @@ internal extension NSManagedObjectModel {
             CoreStore.abort("No model files were found in URL \"\(modelFileURL)\".")
         }
         
-        var modelVersionFileURL: NSURL?
+        var modelVersionFileURL: URL?
         for modelVersion in modelVersions {
             
-            let fileURL = modelFileURL.URLByAppendingPathComponent("\(modelVersion).mom", isDirectory: false)
+            let fileURL = modelFileURL.appendingPathComponent("\(modelVersion).mom", isDirectory: false)
             
             if modelVersion == currentModelVersion {
                 
@@ -92,13 +97,13 @@ internal extension NSManagedObjectModel {
             }
             
             precondition(
-                NSManagedObjectModel(contentsOfURL: fileURL) != nil,
+                NSManagedObjectModel(contentsOf: fileURL) != nil,
                 "Could not find the \"\(modelVersion).mom\" version file for the model at URL \"\(modelFileURL)\"."
             )
         }
         
         if let modelVersionFileURL = modelVersionFileURL,
-            let rootModel = NSManagedObjectModel(contentsOfURL: modelVersionFileURL) {
+            let rootModel = NSManagedObjectModel(contentsOf: modelVersionFileURL) {
                 
                 rootModel.modelVersionFileURL = modelVersionFileURL
                 rootModel.modelVersions = modelVersions
@@ -106,7 +111,7 @@ internal extension NSManagedObjectModel {
                 return rootModel
         }
         
-        CoreStore.abort("Could not create an \(cs_typeName(NSManagedObjectModel)) from the model at URL \"\(modelFileURL)\".")
+        CoreStore.abort("Could not create an \(cs_typeName(NSManagedObjectModel.self)) from the model at URL \"\(modelFileURL)\".")
     }
     
     @nonobjc
@@ -118,7 +123,7 @@ internal extension NSManagedObjectModel {
                 &PropertyKeys.currentModelVersion,
                 inObject: self
             )
-            return value as? String
+            return value as String?
         }
         set {
             
@@ -152,7 +157,7 @@ internal extension NSManagedObjectModel {
     }
     
     @nonobjc
-    internal func entityNameForClass(entityClass: AnyClass) -> String {
+    internal func entityNameForClass(_ entityClass: AnyClass) -> String {
         
         return self.entityNameMapping[NSStringFromClass(entityClass)]!
     }
@@ -183,14 +188,14 @@ internal extension NSManagedObjectModel {
         }
         
         guard let modelFileURL = self.modelFileURL,
-            let modelVersions = self.modelVersions
-            where modelVersions.contains(modelVersion) else {
+            let modelVersions = self.modelVersions,
+            modelVersions.contains(modelVersion) else {
                 
                 return nil
         }
         
-        let versionModelFileURL = modelFileURL.URLByAppendingPathComponent("\(modelVersion).mom", isDirectory: false)
-        guard let model = NSManagedObjectModel(contentsOfURL: versionModelFileURL) else {
+        let versionModelFileURL = modelFileURL.appendingPathComponent("\(modelVersion).mom", isDirectory: false)
+        guard let model = NSManagedObjectModel(contentsOf: versionModelFileURL) else {
             
             return nil
         }
@@ -202,15 +207,15 @@ internal extension NSManagedObjectModel {
     }
     
     @nonobjc
-    internal subscript(metadata: [String: AnyObject]) -> NSManagedObjectModel? {
+    internal subscript(metadata: [String: Any]) -> NSManagedObjectModel? {
         
-        guard let modelHashes = metadata[NSStoreModelVersionHashesKey] as? [String : NSData] else {
+        guard let modelHashes = metadata[NSStoreModelVersionHashesKey] as? [String : Data] else {
             
             return nil
         }
         for modelVersion in self.modelVersions ?? [] {
             
-            if let versionModel = self[modelVersion] where modelHashes == versionModel.entityVersionHashesByName {
+            if let versionModel = self[modelVersion], modelHashes == versionModel.entityVersionHashesByName {
                 
                 return versionModel
             }
@@ -222,16 +227,16 @@ internal extension NSManagedObjectModel {
     // MARK: Private
     
     @nonobjc
-    private var modelFileURL: NSURL? {
+    private var modelFileURL: URL? {
         
         get {
             
-            return self.modelVersionFileURL?.URLByDeletingLastPathComponent
+            return self.modelVersionFileURL?.deletingLastPathComponent()
         }
     }
     
     @nonobjc
-    private var modelVersionFileURL: NSURL? {
+    private var modelVersionFileURL: URL? {
         
         get {
             
@@ -239,12 +244,12 @@ internal extension NSManagedObjectModel {
                 &PropertyKeys.modelVersionFileURL,
                 inObject: self
             )
-            return value
+            return value as URL?
         }
         set {
             
             cs_setAssociatedCopiedObject(
-                newValue,
+                newValue as NSURL?,
                 forKey: &PropertyKeys.modelVersionFileURL,
                 inObject: self
             )
@@ -270,7 +275,7 @@ internal extension NSManagedObjectModel {
                 }
                 
                 let className = $0.managedObjectClassName
-                mapping[className] = entityName
+                mapping[className!] = entityName
             }
             cs_setAssociatedCopiedObject(
                 mapping as NSDictionary,

Sources/Internal/NSPersistentStore+Setup.swift

@@ -66,15 +66,15 @@ internal extension NSPersistentStore {
 
 // MARK: - StorageObject
 
-private class StorageObject: NSObject {
+fileprivate class StorageObject: NSObject {
     
     // MARK: Private
     
     @nonobjc
-    private let storageInterface: StorageInterface?
+    fileprivate let storageInterface: StorageInterface?
     
     @nonobjc
-    private init(_ storage: StorageInterface?) {
+    fileprivate init(_ storage: StorageInterface?) {
         
         self.storageInterface = storage
     }

Sources/Internal/NSPersistentStoreCoordinator+Setup.swift

@@ -26,134 +26,53 @@
 import Foundation
 import CoreData
 
-#if USE_FRAMEWORKS
-    import GCDKit
-#endif
-
 
 // MARK: - NSPersistentStoreCoordinator
 
 internal extension NSPersistentStoreCoordinator {
     
     @nonobjc
-    internal func performAsynchronously(closure: () -> Void) {
+    internal func performAsynchronously(_ closure: @escaping () -> Void) {
         
-        #if USE_FRAMEWORKS
-            
-            self.performBlock(closure)
-        #else
-            
-            if #available(iOS 8.0, *) {
-                
-                self.performBlock(closure)
-            }
-            else {
-                
-                self.lock()
-                GCDQueue.Default.async {
-                    
-                    closure()
-                    self.unlock()
-                }
-            }
-        #endif
+        self.perform(closure)
     }
     
     @nonobjc
-    internal func performSynchronously<T>(closure: () -> T) -> T {
+    internal func performSynchronously<T>(_ closure: @escaping () -> T) -> T {
         
         var result: T?
-        #if USE_FRAMEWORKS
+        self.performAndWait {
             
-            self.performBlockAndWait {
-                
-                result = closure()
-            }
-        #else
-            
-            if #available(iOS 8.0, *) {
-                
-                self.performBlockAndWait {
-                    
-                    result = closure()
-                }
-            }
-            else {
-                
-                self.lock()
-                cs_autoreleasepool {
-                    
-                    result = closure()
-                }
-                self.unlock()
-            }
-        #endif
-        
+            result = closure()
+        }
         return result!
     }
     
     @nonobjc
-    internal func performSynchronously<T>(closure: () throws -> T) throws -> T {
+    internal func performSynchronously<T>(_ closure: @escaping () throws -> T) throws -> T {
         
-        var closureError: ErrorType?
+        var closureError: Error?
         var result: T?
-        #if USE_FRAMEWORKS
+        self.performAndWait {
             
-            self.performBlockAndWait {
+            do {
                 
-                do {
-                    
-                    result = try closure()
-                }
-                catch {
-                    
-                    closureError = error
-                }
+                result = try closure()
             }
-        #else
-            
-            if #available(iOS 8.0, *) {
+            catch {
                 
-                self.performBlockAndWait {
-                    
-                    do {
-                        
-                        result = try closure()
-                    }
-                    catch {
-                        
-                        closureError = error
-                    }
-                }
+                closureError = error
             }
-            else {
-                
-                self.lock()
-                cs_autoreleasepool {
-                    
-                    do {
-                        
-                        result = try closure()
-                    }
-                    catch {
-                        
-                        closureError = error
-                    }
-                }
-                self.unlock()
-            }
-        #endif
-        
+        }
         if let closureError = closureError {
             
             throw closureError
         }
-        
         return result!
     }
     
     @nonobjc
-    internal func addPersistentStoreSynchronously(storeType: String, configuration: String?, URL storeURL: NSURL?, options: [NSObject : AnyObject]?) throws -> NSPersistentStore {
+    internal func addPersistentStoreSynchronously(_ storeType: String, configuration: String?, URL storeURL: URL?, options: [NSObject : AnyObject]?) throws -> NSPersistentStore {
         
         var store: NSPersistentStore?
         var storeError: NSError?
@@ -161,10 +80,10 @@ internal extension NSPersistentStoreCoordinator {
             
             do {
                 
-                store = try self.addPersistentStoreWithType(
-                    storeType,
-                    configuration: configuration,
-                    URL: storeURL,
+                store = try self.addPersistentStore(
+                    ofType: storeType,
+                    configurationName: configuration,
+                    at: storeURL,
                     options: options
                 )
             }
@@ -173,12 +92,10 @@ internal extension NSPersistentStoreCoordinator {
                 storeError = error as NSError
             }
         }
-        
         if let store = store {
             
             return store
         }
-        
         throw CoreStoreError(storeError)
     }
-}
+}

Sources/Internal/NotificationObserver.swift

@@ -32,28 +32,20 @@ internal final class NotificationObserver {
     
     // MARK: Public
     
-    let notificationName: String
-    let object: AnyObject?
     let observer: NSObjectProtocol
     
-    init(notificationName: String, object: AnyObject?, queue: NSOperationQueue? = nil, closure: (note: NSNotification) -> Void) {
+    init(notificationName: Notification.Name, object: Any?, queue: OperationQueue? = nil, closure: @escaping (_ note: Notification) -> Void) {
         
-        self.notificationName = notificationName
-        self.object = object
-        self.observer = NSNotificationCenter.defaultCenter().addObserverForName(
-            notificationName,
+        self.observer = NotificationCenter.default.addObserver(
+            forName: notificationName,
             object: object,
             queue: queue,
-            usingBlock: closure
+            using: closure
         )
     }
     
     deinit {
         
-        NSNotificationCenter.defaultCenter().removeObserver(
-            self.observer,
-            name: self.notificationName,
-            object: self.object
-        )
+        NotificationCenter.default.removeObserver(self.observer)
     }
 }

Sources/Logging/CoreStore+CustomDebugStringConvertible.swift

@@ -49,7 +49,7 @@ extension AsynchronousDataTransaction: CustomDebugStringConvertible, CoreStoreDe
             ("supportsUndo", self.supportsUndo),
             ("bypassesQueueing", self.bypassesQueueing),
             ("isCommitted", self.isCommitted),
-            ("result", self.result)
+            ("result", self.result as Any)
         )
     }
 }
@@ -72,27 +72,27 @@ extension CloudStorageOptions: CustomDebugStringConvertible, CoreStoreDebugStrin
     public var coreStoreDumpString: String {
         
         var flags = [String]()
-        if self.contains(.RecreateLocalStoreOnModelMismatch) {
+        if self.contains(.recreateLocalStoreOnModelMismatch) {
             
-            flags.append(".RecreateLocalStoreOnModelMismatch")
+            flags.append(".recreateLocalStoreOnModelMismatch")
         }
-        if self.contains(.AllowSynchronousLightweightMigration) {
+        if self.contains(.allowSynchronousLightweightMigration) {
             
-            flags.append(".AllowSynchronousLightweightMigration")
+            flags.append(".allowSynchronousLightweightMigration")
         }
         switch flags.count {
             
         case 0:
-            return "[.None]"
+            return "[.none]"
             
         case 1:
             return "[.\(flags[0])]"
             
         default:
             var string = "[\n"
-            string.appendContentsOf(flags.joinWithSeparator(",\n"))
+            string.append(flags.joined(separator: ",\n"))
             string.indent(1)
-            string.appendContentsOf("\n]")
+            string.append("\n]")
             return string
         }
     }
@@ -117,30 +117,30 @@ extension CoreStoreError: CustomDebugStringConvertible, CoreStoreDebugStringConv
         
         let firstLine: String
         var info: DumpInfo = [
-            ("_domain", self._domain),
-            ("_code", self._code),
+            ("errorDomain", type(of: self).errorDomain),
+            ("errorCode", self.errorCode),
         ]
         switch self {
             
-        case .Unknown:
-            firstLine = ".Unknown"
+        case .unknown:
+            firstLine = ".unknown"
             
-        case .DifferentStorageExistsAtURL(let existingPersistentStoreURL):
-            firstLine = ".DifferentStorageExistsAtURL"
+        case .differentStorageExistsAtURL(let existingPersistentStoreURL):
+            firstLine = ".differentStorageExistsAtURL"
             info.append(("existingPersistentStoreURL", existingPersistentStoreURL))
             
-        case .MappingModelNotFound(let localStoreURL, let targetModel, let targetModelVersion):
-            firstLine = ".MappingModelNotFound"
+        case .mappingModelNotFound(let localStoreURL, let targetModel, let targetModelVersion):
+            firstLine = ".mappingModelNotFound"
             info.append(("localStoreURL", localStoreURL))
             info.append(("targetModel", targetModel))
             info.append(("targetModelVersion", targetModelVersion))
             
-        case .ProgressiveMigrationRequired(let localStoreURL):
-            firstLine = ".ProgressiveMigrationRequired"
+        case .progressiveMigrationRequired(let localStoreURL):
+            firstLine = ".progressiveMigrationRequired"
             info.append(("localStoreURL", localStoreURL))
             
-        case .InternalError(let NSError):
-            firstLine = ".InternalError"
+        case .internalError(let NSError):
+            firstLine = ".internalError"
             info.append(("NSError", NSError))
         }
         
@@ -254,8 +254,8 @@ extension ICloudStore: CustomDebugStringConvertible, CoreStoreDebugStringConvert
         
         return createFormattedString(
             "(", ")",
-            ("configuration", self.configuration),
-            ("storeOptions", self.storeOptions),
+            ("configuration", self.configuration as Any),
+            ("storeOptions", self.storeOptions as Any),
             ("cacheFileURL", self.cacheFileURL),
             ("cloudStorageOptions", self.cloudStorageOptions)
         )
@@ -283,8 +283,8 @@ extension InMemoryStore: CustomDebugStringConvertible, CoreStoreDebugStringConve
         
         return createFormattedString(
             "(", ")",
-            ("configuration", self.configuration),
-            ("storeOptions", self.storeOptions)
+            ("configuration", self.configuration as Any),
+            ("storeOptions", self.storeOptions as Any)
         )
     }
 }
@@ -309,7 +309,7 @@ extension Into: CustomDebugStringConvertible, CoreStoreDebugStringConvertible {
         return createFormattedString(
             "(", ")",
             ("entityClass", self.entityClass),
-            ("configuration", self.configuration),
+            ("configuration", self.configuration as Any),
             ("inferStoreIfPossible", self.inferStoreIfPossible)
         )
     }
@@ -334,8 +334,8 @@ extension LegacySQLiteStore: CustomDebugStringConvertible, CoreStoreDebugStringC
         
         return createFormattedString(
             "(", ")",
-            ("configuration", self.configuration),
-            ("storeOptions", self.storeOptions),
+            ("configuration", self.configuration as Any),
+            ("storeOptions", self.storeOptions as Any),
             ("fileURL", self.fileURL),
             ("mappingModelBundles", self.mappingModelBundles),
             ("localStorageOptions", self.localStorageOptions)
@@ -357,7 +357,7 @@ private struct CoreStoreFetchedSectionInfoWrapper: CoreStoreDebugStringConvertib
         return createFormattedString(
             "\"\(self.sectionInfo.name)\" (", ")",
             ("numberOfObjects", self.sectionInfo.numberOfObjects),
-            ("indexTitle", self.sectionInfo.indexTitle)
+            ("indexTitle", self.sectionInfo.indexTitle as Any)
         )
     }
 }
@@ -404,31 +404,31 @@ extension LocalStorageOptions: CustomDebugStringConvertible, CoreStoreDebugStrin
     public var coreStoreDumpString: String {
      
         var flags = [String]()
-        if self.contains(.RecreateStoreOnModelMismatch) {
+        if self.contains(.recreateStoreOnModelMismatch) {
             
-            flags.append(".RecreateStoreOnModelMismatch")
+            flags.append(".recreateStoreOnModelMismatch")
         }
-        if self.contains(.PreventProgressiveMigration) {
+        if self.contains(.preventProgressiveMigration) {
             
-            flags.append(".PreventProgressiveMigration")
+            flags.append(".preventProgressiveMigration")
         }
-        if self.contains(.AllowSynchronousLightweightMigration) {
+        if self.contains(.allowSynchronousLightweightMigration) {
             
-            flags.append(".AllowSynchronousLightweightMigration")
+            flags.append(".allowSynchronousLightweightMigration")
         }
         switch flags.count {
             
         case 0:
-            return "[.None]"
+            return "[.none]"
             
         case 1:
             return "[.\(flags[0])]"
             
         default:
             var string = "[\n"
-            string.appendContentsOf(flags.joinWithSeparator(",\n"))
+            string.append(flags.joined(separator: ",\n"))
             string.indent(1)
-            string.appendContentsOf("\n]")
+            string.append("\n]")
             return string
         }
     }
@@ -465,7 +465,7 @@ extension MigrationChain: CustomDebugStringConvertible, CoreStoreDebugStringConv
                 steps.append(nextVersion)
                 version = nextVersion
             }
-            paths.append(steps.joinWithSeparator(" → "))
+            paths.append(steps.joined(separator: " → "))
         }
         switch paths.count {
             
@@ -479,10 +479,10 @@ extension MigrationChain: CustomDebugStringConvertible, CoreStoreDebugStringConv
             var string = "["
             paths.forEach {
                 
-                string.appendContentsOf("\n\($0);")
+                string.append("\n\($0);")
             }
             string.indent(1)
-            string.appendContentsOf("\n]")
+            string.append("\n]")
             return string
         }
     }
@@ -507,15 +507,15 @@ extension MigrationResult: CustomDebugStringConvertible, CoreStoreDebugStringCon
         
         switch self {
             
-        case .Success(let migrationTypes):
+        case .success(let migrationTypes):
             return createFormattedString(
-                ".Success (", ")",
+                ".success (", ")",
                 ("migrationTypes", migrationTypes)
             )
             
-        case .Failure(let error):
+        case .failure(let error):
             return createFormattedString(
-                ".Failure (", ")",
+                ".failure (", ")",
                 ("error", error)
             )
         }
@@ -541,14 +541,14 @@ extension MigrationType: CustomDebugStringConvertible, CoreStoreDebugStringConve
         
         switch self {
             
-        case .None(let version):
-            return ".None (\"\(version)\")"
+        case .none(let version):
+            return ".none (\"\(version)\")"
             
-        case .Lightweight(let sourceVersion, let destinationVersion):
-            return ".Lightweight (\"\(sourceVersion)\" → \"\(destinationVersion)\")"
+        case .lightweight(let sourceVersion, let destinationVersion):
+            return ".lightweight (\"\(sourceVersion)\" → \"\(destinationVersion)\")"
             
-        case .Heavyweight(let sourceVersion, let destinationVersion):
-            return ".Heavyweight (\"\(sourceVersion)\" → \"\(destinationVersion)\")"
+        case .heavyweight(let sourceVersion, let destinationVersion):
+            return ".heavyweight (\"\(sourceVersion)\" → \"\(destinationVersion)\")"
         }
     }
 }
@@ -575,7 +575,7 @@ extension ObjectMonitor: CustomDebugStringConvertible, CoreStoreDebugStringConve
         return createFormattedString(
             "(", ")",
             ("isObjectDeleted", self.isObjectDeleted),
-            ("object", self.object)
+            ("object", self.object as Any)
         )
     }
 }
@@ -623,15 +623,15 @@ extension SaveResult: CustomDebugStringConvertible, CoreStoreDebugStringConverti
         
         switch self {
             
-        case .Success(let hasChanges):
+        case .success(let hasChanges):
             return createFormattedString(
-                ".Success (", ")",
+                ".success (", ")",
                 ("hasChanges", hasChanges)
             )
             
-        case .Failure(let error):
+        case .failure(let error):
             return createFormattedString(
-                ".Failure (", ")",
+                ".failure (", ")",
                 ("error", error)
             )
         }
@@ -708,24 +708,24 @@ extension SelectTerm: CustomDebugStringConvertible, CoreStoreDebugStringConverti
         
         switch self {
             
-        case ._Attribute(let keyPath):
+        case ._attribute(let keyPath):
             return createFormattedString(
-                ".Attribute (", ")",
+                ".attribute (", ")",
                 ("keyPath", keyPath)
             )
             
-        case ._Aggregate(let function, let keyPath, let alias, let nativeType):
+        case ._aggregate(let function, let keyPath, let alias, let nativeType):
             return createFormattedString(
-                ".Aggregate (", ")",
+                ".aggregate (", ")",
                 ("function", function),
                 ("keyPath", keyPath),
                 ("alias", alias),
                 ("nativeType", nativeType)
             )
             
-        case ._Identity(let alias, let nativeType):
+        case ._identity(let alias, let nativeType):
             return createFormattedString(
-                ".Identity (", ")",
+                ".identity (", ")",
                 ("alias", alias),
                 ("nativeType", nativeType)
             )
@@ -752,15 +752,15 @@ extension SetupResult: CustomDebugStringConvertible, CoreStoreDebugStringConvert
         
         switch self {
             
-        case .Success(let storage):
+        case .success(let storage):
             return createFormattedString(
-                ".Success (", ")",
+                ".success (", ")",
                 ("storage", storage)
             )
             
-        case .Failure(let error):
+        case .failure(let error):
             return createFormattedString(
-                ".Failure (", ")",
+                ".failure (", ")",
                 ("error", error)
             )
         }
@@ -786,8 +786,8 @@ extension SQLiteStore: CustomDebugStringConvertible, CoreStoreDebugStringConvert
         
         return createFormattedString(
             "(", ")",
-            ("configuration", self.configuration),
-            ("storeOptions", self.storeOptions),
+            ("configuration", self.configuration as Any),
+            ("storeOptions", self.storeOptions as Any),
             ("fileURL", self.fileURL),
             ("mappingModelBundles", self.mappingModelBundles),
             ("localStorageOptions", self.localStorageOptions)
@@ -818,7 +818,7 @@ extension SynchronousDataTransaction: CustomDebugStringConvertible, CoreStoreDeb
             ("supportsUndo", self.supportsUndo),
             ("bypassesQueueing", self.bypassesQueueing),
             ("isCommitted", self.isCommitted),
-            ("result", self.result)
+            ("result", self.result as Any)
         )
     }
 }
@@ -898,7 +898,7 @@ extension Where: CustomDebugStringConvertible, CoreStoreDebugStringConvertible {
 
 private typealias DumpInfo = [(key: String, value: Any)]
 
-private func formattedValue(any: Any) -> String {
+private func formattedValue(_ any: Any) -> String {
     
     switch any {
         
@@ -910,19 +910,19 @@ private func formattedValue(any: Any) -> String {
     }
 }
 
-private func formattedDebugDescription(any: Any) -> String {
+private func formattedDebugDescription(_ any: Any) -> String {
     
-    var string = "(\(String(reflecting: any.dynamicType))) "
-    string.appendContentsOf(formattedValue(any))
+    var string = "(\(String(reflecting: type(of: any)))) "
+    string.append(formattedValue(any))
     return string
 }
 
-private func createFormattedString(firstLine: String, _ lastLine: String, _ info: (key: String, value: Any)...) -> String {
+private func createFormattedString(_ firstLine: String, _ lastLine: String, _ info: (key: String, value: Any)...) -> String {
     
     return createFormattedString(firstLine, lastLine, info)
 }
 
-private func createFormattedString(firstLine: String, _ lastLine: String, _ info: [(key: String, value: Any)]) -> String {
+private func createFormattedString(_ firstLine: String, _ lastLine: String, _ info: [(key: String, value: Any)]) -> String {
     
     var string = firstLine
     for (key, value) in info {
@@ -930,34 +930,34 @@ private func createFormattedString(firstLine: String, _ lastLine: String, _ info
         string.appendDumpInfo(key, value)
     }
     string.indent(1)
-    string.appendContentsOf("\n\(lastLine)")
+    string.append("\n\(lastLine)")
     return string
 }
 
-private extension String {
+fileprivate extension String {
     
-    private static func indention(level: Int = 1) -> String {
+    fileprivate static func indention(_ level: Int = 1) -> String {
         
-        return String(count: level * 4, repeatedValue: Character(" "))
+        return String(repeating: " ", count: level * 4)
     }
     
-    private func trimSwiftModuleName() -> String {
+    fileprivate func trimSwiftModuleName() -> String {
         
         if self.hasPrefix("Swift.") {
             
-            return self.substringFromIndex("Swift.".endIndex)
+            return self.substring(from: "Swift.".endIndex)
         }
         return self
     }
     
-    private mutating func indent(level: Int) {
+    fileprivate mutating func indent(_ level: Int) {
         
-        self = self.stringByReplacingOccurrencesOfString("\n", withString: "\n\(String.indention(level))")
+        self = self.replacingOccurrences(of: "\n", with: "\n\(String.indention(level))")
     }
     
-    private mutating func appendDumpInfo(key: String, _ value: Any) {
+    fileprivate mutating func appendDumpInfo(_ key: String, _ value: Any) {
         
-        self.appendContentsOf("\n.\(key) = \(formattedValue(value));")
+        self.append("\n.\(key) = \(formattedValue(value));")
     }
 }
 
@@ -979,17 +979,17 @@ extension Array: CoreStoreDebugStringConvertible {
         var string = "\(self.count) item(s) ["
         if self.isEmpty {
             
-            string.appendContentsOf("]")
+            string.append("]")
             return string
         }
         else {
             
-            for (index, item) in self.enumerate() {
+            for (index, item) in self.enumerated() {
                 
-                string.appendContentsOf("\n\(index) = \(formattedValue(item));")
+                string.append("\n\(index) = \(formattedValue(item));")
             }
             string.indent(1)
-            string.appendContentsOf("\n]")
+            string.append("\n]")
             return string
         }
     }
@@ -1002,17 +1002,17 @@ extension Dictionary: CoreStoreDebugStringConvertible {
         var string = "\(self.count) key-value(s) ["
         if self.isEmpty {
             
-            string.appendContentsOf("]")
+            string.append("]")
             return string
         }
         else {
             
             for (key, value) in self {
                 
-                string.appendContentsOf("\n\(formattedValue(key)) = \(formattedValue(value));")
+                string.append("\n\(formattedValue(key)) = \(formattedValue(value));")
             }
             string.indent(1)
-            string.appendContentsOf("\n]")
+            string.append("\n]")
             return string
         }
     }
@@ -1025,21 +1025,21 @@ extension NSAttributeDescription: CoreStoreDebugStringConvertible {
         return createFormattedString(
             "(", ")",
             ("attributeType", self.attributeType),
-            ("attributeValueClassName", self.attributeValueClassName),
-            ("defaultValue", self.defaultValue),
-            ("valueTransformerName", self.valueTransformerName),
+            ("attributeValueClassName", self.attributeValueClassName as Any),
+            ("defaultValue", self.defaultValue as Any),
+            ("valueTransformerName", self.valueTransformerName as Any),
             ("allowsExternalBinaryDataStorage", self.allowsExternalBinaryDataStorage),
-            ("entity.name", self.entity.name),
+            ("entity.name", self.entity.name as Any),
             ("name", self.name),
-            ("optional", self.optional),
-            ("transient", self.transient),
-            ("userInfo", self.userInfo),
-            ("indexed", self.indexed),
+            ("isOptional", self.isOptional),
+            ("isTransient", self.isTransient),
+            ("userInfo", self.userInfo as Any),
+            ("isIndexed", self.isIndexed),
             ("versionHash", self.versionHash),
-            ("versionHashModifier", self.versionHashModifier),
-            ("indexedBySpotlight", self.indexedBySpotlight),
-            ("storedInExternalRecord", self.storedInExternalRecord),
-            ("renamingIdentifier", self.renamingIdentifier)
+            ("versionHashModifier", self.versionHashModifier as Any),
+            ("isIndexedBySpotlight", self.isIndexedBySpotlight),
+            ("isStoredInExternalRecord", self.isStoredInExternalRecord),
+            ("renamingIdentifier", self.renamingIdentifier as Any)
         )
     }
 }
@@ -1050,28 +1050,28 @@ extension NSAttributeType: CoreStoreDebugStringConvertible {
         
         switch self {
             
-        case .UndefinedAttributeType:       return ".UndefinedAttributeType"
-        case .Integer16AttributeType:       return ".Integer16AttributeType"
-        case .Integer32AttributeType:       return ".Integer32AttributeType"
-        case .Integer64AttributeType:       return ".Integer64AttributeType"
-        case .DecimalAttributeType:         return ".DecimalAttributeType"
-        case .DoubleAttributeType:          return ".DoubleAttributeType"
-        case .FloatAttributeType:           return ".FloatAttributeType"
-        case .StringAttributeType:          return ".StringAttributeType"
-        case .BooleanAttributeType:         return ".BooleanAttributeType"
-        case .DateAttributeType:            return ".DateAttributeType"
-        case .BinaryDataAttributeType:      return ".BinaryDataAttributeType"
-        case .TransformableAttributeType:   return ".TransformableAttributeType"
-        case .ObjectIDAttributeType:        return ".ObjectIDAttributeType"
+        case .undefinedAttributeType:       return ".undefinedAttributeType"
+        case .integer16AttributeType:       return ".integer16AttributeType"
+        case .integer32AttributeType:       return ".integer32AttributeType"
+        case .integer64AttributeType:       return ".integer64AttributeType"
+        case .decimalAttributeType:         return ".decimalAttributeType"
+        case .doubleAttributeType:          return ".doubleAttributeType"
+        case .floatAttributeType:           return ".floatAttributeType"
+        case .stringAttributeType:          return ".stringAttributeType"
+        case .booleanAttributeType:         return ".booleanAttributeType"
+        case .dateAttributeType:            return ".dateAttributeType"
+        case .binaryDataAttributeType:      return ".binaryDataAttributeType"
+        case .transformableAttributeType:   return ".transformableAttributeType"
+        case .objectIDAttributeType:        return ".objectIDAttributeType"
         }
     }
 }
 
-extension NSBundle: CoreStoreDebugStringConvertible {
+extension Bundle: CoreStoreDebugStringConvertible {
     
     public var coreStoreDumpString: String {
         
-        return "\(self.bundleIdentifier.flatMap({ "\"\($0)\"" }) ?? "<unknown bundle identifier>") (\(self.bundleURL.lastPathComponent ?? "<unknown bundle URL>"))"
+        return "\(self.bundleIdentifier.flatMap({ "\"\($0)\"" }) ?? "<unknown bundle identifier>") (\(self.bundleURL.lastPathComponent))"
     }
 }
 
@@ -1081,10 +1081,10 @@ extension NSDeleteRule: CoreStoreDebugStringConvertible {
         
         switch self {
             
-        case .NoActionDeleteRule:   return ".NoActionDeleteRule"
-        case .NullifyDeleteRule:    return ".NullifyDeleteRule"
-        case .CascadeDeleteRule:    return ".CascadeDeleteRule"
-        case .DenyDeleteRule:       return ".DenyDeleteRule"
+        case .noActionDeleteRule:   return ".noActionDeleteRule"
+        case .nullifyDeleteRule:    return ".nullifyDeleteRule"
+        case .cascadeDeleteRule:    return ".cascadeDeleteRule"
+        case .denyDeleteRule:       return ".denyDeleteRule"
         }
     }
 }
@@ -1095,15 +1095,15 @@ extension NSEntityDescription: CoreStoreDebugStringConvertible {
         
         var info: DumpInfo = [
             ("managedObjectClassName", self.managedObjectClassName!),
-            ("name", self.name),
-            ("abstract", self.abstract),
-            ("superentity?.name", self.superentity?.name),
+            ("name", self.name as Any),
+            ("isAbstract", self.isAbstract),
+            ("superentity?.name", self.superentity?.name as Any),
             ("subentities", self.subentities.map({ $0.name })),
             ("properties", self.properties),
-            ("userInfo", self.userInfo),
+            ("userInfo", self.userInfo as Any),
             ("versionHash", self.versionHash),
-            ("versionHashModifier", self.versionHashModifier),
-            ("renamingIdentifier", self.renamingIdentifier),
+            ("versionHashModifier", self.versionHashModifier as Any),
+            ("renamingIdentifier", self.renamingIdentifier as Any),
             ("compoundIndexes", self.compoundIndexes)
         ]
         if #available(iOS 9.0, OSXApplicationExtension 10.11, OSX 10.11, *) {
@@ -1147,10 +1147,10 @@ extension NSManagedObjectID: CoreStoreDebugStringConvertible {
     public var coreStoreDumpString: String {
         
         return createFormattedString(
-            "\(self.URIRepresentation().coreStoreDumpString) (", ")",
-            ("entity.name", self.entity.name),
-            ("temporaryID", self.temporaryID),
-            ("persistentStore?.URL", self.persistentStore?.URL)
+            "\(self.uriRepresentation().coreStoreDumpString) (", ")",
+            ("entity.name", self.entity.name as Any),
+            ("isTemporaryID", self.isTemporaryID as Any),
+            ("persistentStore?.url", self.persistentStore?.url as Any)
         )
     }
 }
@@ -1177,24 +1177,24 @@ extension NSRelationshipDescription: CoreStoreDebugStringConvertible {
         
         return createFormattedString(
             "(", ")",
-            ("destinationEntity?.name", self.destinationEntity?.name),
-            ("inverseRelationship?.name", self.inverseRelationship?.name),
+            ("destinationEntity?.name", self.destinationEntity?.name as Any),
+            ("inverseRelationship?.name", self.inverseRelationship?.name as Any),
             ("minCount", self.minCount),
             ("maxCount", self.maxCount),
             ("deleteRule", self.deleteRule),
-            ("toMany", self.toMany),
-            ("ordered", self.ordered),
-            ("entity.name", self.entity.name),
+            ("isToMany", self.isToMany),
+            ("isOrdered", self.isOrdered),
+            ("entity.name", self.entity.name as Any),
             ("name", self.name),
-            ("optional", self.optional),
-            ("transient", self.transient),
-            ("userInfo", self.userInfo),
-            ("indexed", self.indexed),
+            ("isOptional", self.isOptional),
+            ("isTransient", self.isTransient),
+            ("userInfo", self.userInfo as Any),
+            ("isIndexed", self.isIndexed),
             ("versionHash", self.versionHash),
-            ("versionHashModifier", self.versionHashModifier),
-            ("indexedBySpotlight", self.indexedBySpotlight),
-            ("storedInExternalRecord", self.storedInExternalRecord),
-            ("renamingIdentifier", self.renamingIdentifier)
+            ("versionHashModifier", self.versionHashModifier as Any),
+            ("isIndexedBySpotlight", self.isIndexedBySpotlight),
+            ("isStoredInExternalRecord", self.isStoredInExternalRecord),
+            ("renamingIdentifier", self.renamingIdentifier as Any)
         )
     }
 }
@@ -1205,14 +1205,14 @@ extension NSSortDescriptor: CoreStoreDebugStringConvertible {
         
         return createFormattedString(
             "(", ")",
-            ("key", self.key),
+            ("key", self.key as Any),
             ("ascending", self.ascending),
-            ("selector", self.selector)
+            ("selector", self.selector as Any)
         )
     }
 }
 
-extension NSURL: CoreStoreDebugStringConvertible {
+extension URL: CoreStoreDebugStringConvertible {
     
     public var coreStoreDumpString: String {
         
@@ -1236,7 +1236,7 @@ extension Selector: CoreStoreDebugStringConvertible {
     
     public var coreStoreDumpString: String {
         
-        return self == nil ? "nil" : "\"\(self)\""
+        return "\"\(self)\""
     }
 }