skip observer testing on macOS

version bump, cleanup, unit test
Merge pull request #104 from colinmorelli/feature/sync-transaction-async-merge
2026-01-12 04:10:36 +01:00 · 2016-09-30 13:32:31 +09:00 · 2016-09-30 13:28:19 +09:00 · 2016-09-30 12:38:28 +09:00 · 2016-09-29 14:47:51 -04:00 · 2016-09-27 17:31:08 +09:00
48 changed files with 509 additions and 757 deletions
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,5 @@
 language: objective-c
-osx_image: xcode7.3
+osx_image: xcode8
 sudo: false
 git:
  submodules: false
@@ -10,16 +10,17 @@ 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=10.0,name=iPhone 7"          SCHEME="CoreStore iOS"     SDK=iphonesimulator10.0  RUN_TESTS="YES" POD_LINT="NO"
+    - DESTINATION="OS=9.0,name=iPhone 6 Plus"      SCHEME="CoreStore iOS"     SDK=iphonesimulator10.0  RUN_TESTS="YES" POD_LINT="NO"
+# iOS 8 testing currently broken on Xcode 8
+#    - DESTINATION="OS=8.4,name=iPhone 6"           SCHEME="CoreStore iOS"     SDK=iphonesimulator10.0  RUN_TESTS="YES" POD_LINT="NO"
+#    - DESTINATION="OS=8.3,name=iPhone 5s"          SCHEME="CoreStore iOS"     SDK=iphonesimulator10.0  RUN_TESTS="YES" POD_LINT="NO"
+#    - DESTINATION="OS=8.2,name=iPhone 5"           SCHEME="CoreStore iOS"     SDK=iphonesimulator10.0  RUN_TESTS="YES" POD_LINT="NO"
+#    - DESTINATION="OS=8.1,name=iPhone 4s"          SCHEME="CoreStore iOS"     SDK=iphonesimulator10.0  RUN_TESTS="YES" POD_LINT="YES"
+    - DESTINATION="arch=x86_64"                    SCHEME="CoreStore OSX"     SDK=macosx10.12          RUN_TESTS="YES" POD_LINT="NO"
+    - DESTINATION="OS=3.0,name=Apple Watch - 42mm" SCHEME="CoreStore watchOS" SDK=watchsimulator3.0    RUN_TESTS="NO"  POD_LINT="NO"
+    - DESTINATION="OS=2.2,name=Apple Watch - 42mm" SCHEME="CoreStore watchOS" SDK=watchsimulator3.0    RUN_TESTS="NO"  POD_LINT="NO"
+    - DESTINATION="OS=9.2,name=Apple TV 1080p"     SCHEME="CoreStore tvOS"    SDK=appletvsimulator10.0 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
@@ -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 "iphonesimulator10.0" -destination "OS=10.0,name=iPhone 7" -configuration Debug ONLY_ACTIVE_ARCH=NO clean test | xcpretty -c;
+  - xcodebuild -workspace "CoreStore.xcworkspace" -scheme "CoreStore iOS" -sdk "iphonesimulator10.0" -destination "OS=10.0,name=iPhone 7" -configuration Release ONLY_ACTIVE_ARCH=NO clean test | xcpretty -c;
  - if [ $POD_LINT == "YES" ]; then
      pod lib lint --quick;
    fi
--- a/2
+++ b/2
@@ -1 +1 @@
-github "JohnEstropia/GCDKit" == 1.2.6
+github "JohnEstropia/GCDKit" == 1.3.0
--- a/Cartfile.resolved
+++ b/Cartfile.resolved
@@ -1 +1 @@
-github "JohnEstropia/GCDKit" "1.2.6"
+github "JohnEstropia/GCDKit" "1.3.0"
--- a/Carthage/Checkouts/GCDKit
+++ b/Carthage/Checkouts/GCDKit
--- a/CoreStore.podspec
+++ b/CoreStore.podspec
@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
    s.name = "CoreStore"
-    s.version = "2.0.3"
+    s.version = "2.1.2"
    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 +16,9 @@ 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
+
+    s.dependency "GCDKit", "1.3.0"
+end
--- a/CoreStore.xcodeproj/project.pbxproj
+++ b/CoreStore.xcodeproj/project.pbxproj
@@ -70,15 +70,12 @@
 		82BA18DF1C4BBE2600A0916E /* Foundation.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 82BA18DE1C4BBE2600A0916E /* Foundation.framework */; };
 		82BA18E11C4BBE2C00A0916E /* CoreData.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 82BA18E01C4BBE2C00A0916E /* CoreData.framework */; };
 		B501FDDD1CA8D05000BE22EF /* CSSectionBy.swift in Sources */ = {isa = PBXBuildFile; fileRef = B501FDDC1CA8D05000BE22EF /* CSSectionBy.swift */; };
-		B501FDDE1CA8D05000BE22EF /* CSSectionBy.swift in Sources */ = {isa = PBXBuildFile; fileRef = B501FDDC1CA8D05000BE22EF /* CSSectionBy.swift */; };
 		B501FDDF1CA8D05000BE22EF /* CSSectionBy.swift in Sources */ = {isa = PBXBuildFile; fileRef = B501FDDC1CA8D05000BE22EF /* CSSectionBy.swift */; };
 		B501FDE01CA8D05000BE22EF /* CSSectionBy.swift in Sources */ = {isa = PBXBuildFile; fileRef = B501FDDC1CA8D05000BE22EF /* CSSectionBy.swift */; };
 		B501FDE21CA8D1F500BE22EF /* CSListMonitor.swift in Sources */ = {isa = PBXBuildFile; fileRef = B501FDE11CA8D1F500BE22EF /* CSListMonitor.swift */; };
-		B501FDE31CA8D1F500BE22EF /* CSListMonitor.swift in Sources */ = {isa = PBXBuildFile; fileRef = B501FDE11CA8D1F500BE22EF /* CSListMonitor.swift */; };
 		B501FDE41CA8D1F500BE22EF /* CSListMonitor.swift in Sources */ = {isa = PBXBuildFile; fileRef = B501FDE11CA8D1F500BE22EF /* CSListMonitor.swift */; };
 		B501FDE51CA8D1F500BE22EF /* CSListMonitor.swift in Sources */ = {isa = PBXBuildFile; fileRef = B501FDE11CA8D1F500BE22EF /* CSListMonitor.swift */; };
 		B501FDE71CA8D20500BE22EF /* CSListObserver.swift in Sources */ = {isa = PBXBuildFile; fileRef = B501FDE61CA8D20500BE22EF /* CSListObserver.swift */; };
-		B501FDE81CA8D20500BE22EF /* CSListObserver.swift in Sources */ = {isa = PBXBuildFile; fileRef = B501FDE61CA8D20500BE22EF /* CSListObserver.swift */; };
 		B501FDE91CA8D20500BE22EF /* CSListObserver.swift in Sources */ = {isa = PBXBuildFile; fileRef = B501FDE61CA8D20500BE22EF /* CSListObserver.swift */; };
 		B501FDEA1CA8D20500BE22EF /* CSListObserver.swift in Sources */ = {isa = PBXBuildFile; fileRef = B501FDE61CA8D20500BE22EF /* CSListObserver.swift */; };
 		B50392F91C478FF3009900CA /* NSManagedObject+Transaction.swift in Sources */ = {isa = PBXBuildFile; fileRef = B50392F81C478FF3009900CA /* NSManagedObject+Transaction.swift */; };
@@ -91,7 +88,6 @@
 		B519E45B1C4CD2ED00E7B469 /* GCDKit.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = B519E4571C4CD2CA00E7B469 /* GCDKit.framework */; };
 		B51BE06A1B47FC4B0069F532 /* NSManagedObjectModel+Setup.swift in Sources */ = {isa = PBXBuildFile; fileRef = B51BE0691B47FC4B0069F532 /* NSManagedObjectModel+Setup.swift */; };
 		B51FE5AB1CD4D00300E54258 /* CoreStore+CustomDebugStringConvertible.swift in Sources */ = {isa = PBXBuildFile; fileRef = B51FE5AA1CD4D00300E54258 /* CoreStore+CustomDebugStringConvertible.swift */; };
-		B51FE5AC1CD4D00300E54258 /* CoreStore+CustomDebugStringConvertible.swift in Sources */ = {isa = PBXBuildFile; fileRef = B51FE5AA1CD4D00300E54258 /* CoreStore+CustomDebugStringConvertible.swift */; };
 		B51FE5AD1CD4D00300E54258 /* CoreStore+CustomDebugStringConvertible.swift in Sources */ = {isa = PBXBuildFile; fileRef = B51FE5AA1CD4D00300E54258 /* CoreStore+CustomDebugStringConvertible.swift */; };
 		B51FE5AE1CD4D00300E54258 /* CoreStore+CustomDebugStringConvertible.swift in Sources */ = {isa = PBXBuildFile; fileRef = B51FE5AA1CD4D00300E54258 /* CoreStore+CustomDebugStringConvertible.swift */; };
 		B51FE5AF1CD4D00300E54258 /* CoreStore+CustomDebugStringConvertible.swift in Sources */ = {isa = PBXBuildFile; fileRef = B51FE5AA1CD4D00300E54258 /* CoreStore+CustomDebugStringConvertible.swift */; };
@@ -149,13 +145,7 @@
 		B52557881D02DE8100E51965 /* FetchTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = B52557871D02DE8100E51965 /* FetchTests.swift */; };
 		B52557891D02DE8100E51965 /* FetchTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = B52557871D02DE8100E51965 /* FetchTests.swift */; };
 		B525578A1D02DE8100E51965 /* FetchTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = B52557871D02DE8100E51965 /* FetchTests.swift */; };
-		B52661401CADD585007B85D9 /* CoreStoreFetchRequest.swift in Sources */ = {isa = PBXBuildFile; fileRef = B526613F1CADD585007B85D9 /* CoreStoreFetchRequest.swift */; };
-		B52661411CADD585007B85D9 /* CoreStoreFetchRequest.swift in Sources */ = {isa = PBXBuildFile; fileRef = B526613F1CADD585007B85D9 /* CoreStoreFetchRequest.swift */; };
-		B52661421CADD585007B85D9 /* CoreStoreFetchRequest.swift in Sources */ = {isa = PBXBuildFile; fileRef = B526613F1CADD585007B85D9 /* CoreStoreFetchRequest.swift */; };
-		B52661431CADD585007B85D9 /* CoreStoreFetchRequest.swift in Sources */ = {isa = PBXBuildFile; fileRef = B526613F1CADD585007B85D9 /* CoreStoreFetchRequest.swift */; };
-		B52661441CADD585007B85D9 /* CoreStoreFetchRequest.swift in Sources */ = {isa = PBXBuildFile; fileRef = B526613F1CADD585007B85D9 /* CoreStoreFetchRequest.swift */; };
 		B529C2041CA4A2DB007E7EBD /* CSSaveResult.swift in Sources */ = {isa = PBXBuildFile; fileRef = B529C2031CA4A2DB007E7EBD /* CSSaveResult.swift */; };
-		B529C2051CA4A2DB007E7EBD /* CSSaveResult.swift in Sources */ = {isa = PBXBuildFile; fileRef = B529C2031CA4A2DB007E7EBD /* CSSaveResult.swift */; };
 		B529C2061CA4A2DB007E7EBD /* CSSaveResult.swift in Sources */ = {isa = PBXBuildFile; fileRef = B529C2031CA4A2DB007E7EBD /* CSSaveResult.swift */; };
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 		B529C2081CA4A2DC007E7EBD /* CSSaveResult.swift in Sources */ = {isa = PBXBuildFile; fileRef = B529C2031CA4A2DB007E7EBD /* CSSaveResult.swift */; };
@@ -207,38 +197,31 @@
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-		B538BA761D15B3E30003A766 /* CoreStoreBridge.m in Sources */ = {isa = PBXBuildFile; fileRef = B538BA701D15B3E30003A766 /* CoreStoreBridge.m */; };
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 			attributes = {
 				LastSwiftUpdateCheck = 0730;
-				LastUpgradeCheck = 0700;
+				LastUpgradeCheck = 0800;
 				ORGANIZATIONNAME = "John Rommel Estropia";
 				TargetAttributes = {
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 						CreatedOnToolsVersion = 6.0;
+						LastSwiftMigration = 0800;
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 					2F03A53A19C5C6DA005002A5 = {
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+						LastSwiftMigration = 0800;
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 					82BA18881C4BBCBA00A0916E = {
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+						LastSwiftMigration = 0800;
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 				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;
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 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
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 				ENABLE_TESTABILITY = YES;
 				GCC_C_LANGUAGE_STANDARD = gnu99;
 				GCC_DYNAMIC_NO_PIC = NO;
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 				GCC_PREPROCESSOR_DEFINITIONS = (
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 				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;
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 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
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 				ENABLE_STRICT_OBJC_MSGSEND = YES;
 				ENABLE_TESTABILITY = YES;
 				GCC_C_LANGUAGE_STANDARD = gnu99;
+				GCC_NO_COMMON_BLOCKS = YES;
 				GCC_PREPROCESSOR_DEFINITIONS = "USE_FRAMEWORKS=1";
 				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
 				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
@@ -2490,7 +2184,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = com.johnestropia.CoreStore;
 				PRODUCT_NAME = CoreStore;
 				SDKROOT = iphoneos;
-				SWIFT_OPTIMIZATION_LEVEL = "-O";
+				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
 				TARGETED_DEVICE_FAMILY = "1,2";
 				TVOS_DEPLOYMENT_TARGET = 9.0;
 				VALIDATE_PRODUCT = YES;
@@ -2504,6 +2198,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				CLANG_ENABLE_MODULES = YES;
+				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "";
 				DEFINES_MODULE = YES;
 				DYLIB_COMPATIBILITY_VERSION = 1;
 				DYLIB_CURRENT_VERSION = 1;
@@ -2513,6 +2208,7 @@
 				SDKROOT = iphoneos;
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+				SWIFT_VERSION = 2.3;
 			};
 			name = Debug;
 		};
@@ -2520,6 +2216,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				CLANG_ENABLE_MODULES = YES;
+				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "";
 				DEFINES_MODULE = YES;
 				DYLIB_COMPATIBILITY_VERSION = 1;
 				DYLIB_CURRENT_VERSION = 1;
@@ -2528,6 +2225,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				SDKROOT = iphoneos;
 				SKIP_INSTALL = YES;
+				SWIFT_VERSION = 2.3;
 			};
 			name = Release;
 		};
@@ -2546,6 +2244,7 @@
 				SDKROOT = iphoneos;
 				SWIFT_OBJC_BRIDGING_HEADER = "CoreStoreTests/CoreStoreTests-Bridging-Header.h";
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+				SWIFT_VERSION = 2.3;
 			};
 			name = Debug;
 		};
@@ -2559,6 +2258,7 @@
 				PRODUCT_NAME = CoreStoreTests;
 				SDKROOT = iphoneos;
 				SWIFT_OBJC_BRIDGING_HEADER = "CoreStoreTests/CoreStoreTests-Bridging-Header.h";
+				SWIFT_VERSION = 2.3;
 			};
 			name = Release;
 		};
@@ -2566,6 +2266,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				CLANG_ENABLE_MODULES = YES;
+				"CODE_SIGN_IDENTITY[sdk=appletvos*]" = "";
 				DEFINES_MODULE = YES;
 				DYLIB_COMPATIBILITY_VERSION = 1;
 				DYLIB_CURRENT_VERSION = 1;
@@ -2576,6 +2277,7 @@
 				SDKROOT = appletvos;
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+				SWIFT_VERSION = 2.3;
 				TARGETED_DEVICE_FAMILY = 3;
 			};
 			name = Debug;
@@ -2584,6 +2286,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				CLANG_ENABLE_MODULES = YES;
+				"CODE_SIGN_IDENTITY[sdk=appletvos*]" = "";
 				DEFINES_MODULE = YES;
 				DYLIB_COMPATIBILITY_VERSION = 1;
 				DYLIB_CURRENT_VERSION = 1;
@@ -2593,6 +2296,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				SDKROOT = appletvos;
 				SKIP_INSTALL = YES;
+				SWIFT_VERSION = 2.3;
 				TARGETED_DEVICE_FAMILY = 3;
 			};
 			name = Release;
@@ -2609,6 +2313,7 @@
 				SDKROOT = appletvos;
 				SWIFT_OBJC_BRIDGING_HEADER = "CoreStoreTests/CoreStoreTests-Bridging-Header.h";
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+				SWIFT_VERSION = 2.3;
 				TARGETED_DEVICE_FAMILY = 3;
 			};
 			name = Debug;
@@ -2625,6 +2330,7 @@
 				PRODUCT_NAME = CoreStoreTests;
 				SDKROOT = appletvos;
 				SWIFT_OBJC_BRIDGING_HEADER = "CoreStoreTests/CoreStoreTests-Bridging-Header.h";
+				SWIFT_VERSION = 2.3;
 				TARGETED_DEVICE_FAMILY = 3;
 			};
 			name = Release;
@@ -2633,7 +2339,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				CLANG_ENABLE_MODULES = YES;
-				CODE_SIGN_IDENTITY = "-";
+				CODE_SIGN_IDENTITY = "";
 				COMBINE_HIDPI_IMAGES = YES;
 				DEBUG_INFORMATION_FORMAT = dwarf;
 				DEFINES_MODULE = YES;
@@ -2647,6 +2353,7 @@
 				SDKROOT = macosx;
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+				SWIFT_VERSION = 2.3;
 			};
 			name = Debug;
 		};
@@ -2654,7 +2361,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				CLANG_ENABLE_MODULES = YES;
-				CODE_SIGN_IDENTITY = "-";
+				CODE_SIGN_IDENTITY = "";
 				COMBINE_HIDPI_IMAGES = YES;
 				COPY_PHASE_STRIP = NO;
 				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
@@ -2668,6 +2375,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/../Frameworks @loader_path/Frameworks";
 				SDKROOT = macosx;
 				SKIP_INSTALL = YES;
+				SWIFT_VERSION = 2.3;
 			};
 			name = Release;
 		};
@@ -2686,6 +2394,7 @@
 				SDKROOT = macosx;
 				SWIFT_OBJC_BRIDGING_HEADER = "CoreStoreTests/CoreStoreTests-Bridging-Header.h";
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+				SWIFT_VERSION = 2.3;
 			};
 			name = Debug;
 		};
@@ -2704,6 +2413,7 @@
 				PRODUCT_NAME = CoreStoreTests;
 				SDKROOT = macosx;
 				SWIFT_OBJC_BRIDGING_HEADER = "CoreStoreTests/CoreStoreTests-Bridging-Header.h";
+				SWIFT_VERSION = 2.3;
 			};
 			name = Release;
 		};
@@ -2711,6 +2421,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				CLANG_ENABLE_MODULES = YES;
+				"CODE_SIGN_IDENTITY[sdk=watchos*]" = "";
 				DEBUG_INFORMATION_FORMAT = dwarf;
 				DEFINES_MODULE = YES;
 				DYLIB_COMPATIBILITY_VERSION = 1;
@@ -2722,6 +2433,7 @@
 				SDKROOT = watchos;
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+				SWIFT_VERSION = 2.3;
 				TARGETED_DEVICE_FAMILY = 4;
 			};
 			name = Debug;
@@ -2730,6 +2442,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				CLANG_ENABLE_MODULES = YES;
+				"CODE_SIGN_IDENTITY[sdk=watchos*]" = "";
 				COPY_PHASE_STRIP = NO;
 				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
 				DEFINES_MODULE = YES;
@@ -2741,56 +2454,11 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				SDKROOT = watchos;
 				SKIP_INSTALL = YES;
+				SWIFT_VERSION = 2.3;
 				TARGETED_DEVICE_FAMILY = 4;
 			};
 			name = Release;
 		};
-		B5D9E3321CA2C317007A9D52 /* Debug */ = {
-			isa = XCBuildConfiguration;
-			buildSettings = {
-				CLANG_ENABLE_MODULES = YES;
-				DEFINES_MODULE = YES;
-				DYLIB_COMPATIBILITY_VERSION = 1;
-				DYLIB_CURRENT_VERSION = 1;
-				DYLIB_INSTALL_NAME_BASE = "@rpath";
-				GCC_PREPROCESSOR_DEFINITIONS = (
-					"DEBUG=1",
-					"USE_FRAMEWORKS=0",
-					"SWIFT_OBJC_INTERFACE_HEADER_NAME=<$(SWIFT_MODULE_NAME)/$(SWIFT_OBJC_INTERFACE_HEADER_NAME)>",
-				);
-				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
-				IPHONEOS_DEPLOYMENT_TARGET = 7.0;
-				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
-				OTHER_SWIFT_FLAGS = "-D DEBUG";
-				PRODUCT_NAME = CoreStore_iOS7;
-				SDKROOT = iphoneos;
-				SKIP_INSTALL = YES;
-				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-			};
-			name = Debug;
-		};
-		B5D9E3331CA2C317007A9D52 /* Release */ = {
-			isa = XCBuildConfiguration;
-			buildSettings = {
-				CLANG_ENABLE_MODULES = YES;
-				DEFINES_MODULE = YES;
-				DYLIB_COMPATIBILITY_VERSION = 1;
-				DYLIB_CURRENT_VERSION = 1;
-				DYLIB_INSTALL_NAME_BASE = "@rpath";
-				GCC_PREPROCESSOR_DEFINITIONS = (
-					"USE_FRAMEWORKS=0",
-					"SWIFT_OBJC_INTERFACE_HEADER_NAME=<$(SWIFT_MODULE_NAME)/$(SWIFT_OBJC_INTERFACE_HEADER_NAME)>",
-				);
-				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
-				IPHONEOS_DEPLOYMENT_TARGET = 7.0;
-				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
-				OTHER_SWIFT_FLAGS = "";
-				PRODUCT_NAME = CoreStore_iOS7;
-				SDKROOT = iphoneos;
-				SKIP_INSTALL = YES;
-			};
-			name = Release;
-		};
 /* End XCBuildConfiguration section */

 /* Begin XCConfigurationList section */
@@ -2866,15 +2534,6 @@
 			defaultConfigurationIsVisible = 0;
 			defaultConfigurationName = Release;
 		};
-		B5D9E3311CA2C317007A9D52 /* Build configuration list for PBXNativeTarget "CoreStore iOS7" */ = {
-			isa = XCConfigurationList;
-			buildConfigurations = (
-				B5D9E3321CA2C317007A9D52 /* Debug */,
-				B5D9E3331CA2C317007A9D52 /* Release */,
-			);
-			defaultConfigurationIsVisible = 0;
-			defaultConfigurationName = Release;
-		};
 /* End XCConfigurationList section */

 /* Begin XCVersionGroup section */
--- a/CoreStore.xcodeproj/project.xcworkspace/xcshareddata/CoreStore.xcscmblueprint
+++ b/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" : [
    {
--- a/CoreStore.xcodeproj/xcshareddata/xcschemes/CoreStore
+++ b/CoreStore.xcodeproj/xcshareddata/xcschemes/CoreStore
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0710"
+   LastUpgradeVersion = "0800"
   version = "1.3">
   <BuildAction
      parallelizeBuildables = "YES"
--- a/CoreStore.xcodeproj/xcshareddata/xcschemes/CoreStore
+++ b/CoreStore.xcodeproj/xcshareddata/xcschemes/CoreStore
@@ -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"
--- a/CoreStore.xcodeproj/xcshareddata/xcschemes/CoreStore
+++ b/CoreStore.xcodeproj/xcshareddata/xcschemes/CoreStore
@@ -1,104 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<Scheme
-   LastUpgradeVersion = "0700"
-   version = "1.3">
-   <BuildAction
-      parallelizeBuildables = "YES"
-      buildImplicitDependencies = "YES">
-      <BuildActionEntries>
-         <BuildActionEntry
-            buildForTesting = "YES"
-            buildForRunning = "YES"
-            buildForProfiling = "YES"
-            buildForArchiving = "YES"
-            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">
-            </BuildableReference>
-         </BuildActionEntry>
-      </BuildActionEntries>
-   </BuildAction>
-   <TestAction
-      buildConfiguration = "Debug"
-      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
-      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">
-         </BuildableReference>
-      </MacroExpansion>
-      <AdditionalOptions>
-      </AdditionalOptions>
-   </TestAction>
-   <LaunchAction
-      buildConfiguration = "Debug"
-      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
-      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      launchStyle = "0"
-      useCustomWorkingDirectory = "NO"
-      ignoresPersistentStateOnLaunch = "NO"
-      debugDocumentVersioning = "YES"
-      debugServiceExtension = "internal"
-      allowLocationSimulation = "YES">
-      <MacroExpansion>
-         <BuildableReference
-            BuildableIdentifier = "primary"
-            BlueprintIdentifier = "B5D9E2ED1CA2C317007A9D52"
-            BuildableName = "CoreStore_iOS7.framework"
-            BlueprintName = "CoreStore iOS7"
-            ReferencedContainer = "container:CoreStore.xcodeproj">
-         </BuildableReference>
-      </MacroExpansion>
-      <AdditionalOptions>
-      </AdditionalOptions>
-   </LaunchAction>
-   <ProfileAction
-      buildConfiguration = "Release"
-      shouldUseLaunchSchemeArgsEnv = "YES"
-      savedToolIdentifier = ""
-      useCustomWorkingDirectory = "NO"
-      debugDocumentVersioning = "YES">
-   </ProfileAction>
-   <AnalyzeAction
-      buildConfiguration = "Release">
-   </AnalyzeAction>
-   <ArchiveAction
-      buildConfiguration = "Release"
-      revealArchiveInOrganizer = "YES">
-   </ArchiveAction>
-</Scheme>
--- a/CoreStore.xcodeproj/xcshareddata/xcschemes/CoreStore
+++ b/CoreStore.xcodeproj/xcshareddata/xcschemes/CoreStore
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0720"
+   LastUpgradeVersion = "0800"
   version = "1.3">
   <BuildAction
      parallelizeBuildables = "YES"
--- a/CoreStore.xcodeproj/xcshareddata/xcschemes/CoreStore
+++ b/CoreStore.xcodeproj/xcshareddata/xcschemes/CoreStore
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0700"
+   LastUpgradeVersion = "0800"
   version = "1.3">
   <BuildAction
      parallelizeBuildables = "YES"
--- a/CoreStoreDemo/CoreStoreDemo.xcodeproj/project.pbxproj
+++ b/CoreStoreDemo/CoreStoreDemo.xcodeproj/project.pbxproj
@@ -277,6 +277,7 @@
 				TargetAttributes = {
 					B54AAD481AF4D26E00848AE0 = {
 						CreatedOnToolsVersion = 6.3;
+						LastSwiftMigration = 0800;
 					};
 				};
 			};
@@ -461,6 +462,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.johnestropia.corestore.demo;
 				PRODUCT_NAME = "$(TARGET_NAME)";
+				SWIFT_VERSION = 2.3;
 			};
 			name = Debug;
 		};
@@ -473,6 +475,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.johnestropia.corestore.demo;
 				PRODUCT_NAME = "$(TARGET_NAME)";
+				SWIFT_VERSION = 2.3;
 			};
 			name = Release;
 		};
--- a/CoreStoreTests/BaseTests/BaseTestCase.swift
+++ b/CoreStoreTests/BaseTests/BaseTestCase.swift
@@ -49,8 +49,8 @@ class BaseTestCase: XCTestCase {
                try stack.addStorageAndWait(
                    SQLiteStore(
                        fileURL: SQLiteStore.defaultRootDirectory
-                            .URLByAppendingPathComponent(NSUUID().UUIDString)
-                            .URLByAppendingPathComponent("\(self.dynamicType)_\(($0 ?? "-null-")).sqlite"),
+                            .URLByAppendingPathComponent(NSUUID().UUIDString)!
+                            .URLByAppendingPathComponent("\(self.dynamicType)_\(($0 ?? "-null-")).sqlite")!,
                        configuration: $0,
                        localStorageOptions: .RecreateStoreOnModelMismatch
                    )
--- a/CoreStoreTests/BridgingTests.m
+++ b/CoreStoreTests/BridgingTests.m
@@ -197,4 +197,41 @@
    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];
+}
+
@end
--- a/CoreStoreTests/FromTests.swift
+++ b/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 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 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 = 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 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 = 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 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 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 = 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 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 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"])
            }
        }
--- a/CoreStoreTests/GroupByTests.swift
+++ b/CoreStoreTests/GroupByTests.swift
@@ -68,7 +68,7 @@ final class GroupByTests: BaseTestCase {
            
            let groupBy = GroupBy("testString")
            
-            let request = NSFetchRequest()
+            let request = CoreStoreFetchRequest()
            _ = From(TestEntity1).applyToFetchRequest(request, context: dataStack.mainContext)
            groupBy.applyToFetchRequest(request)
            
--- a/CoreStoreTests/OrderByTests.swift
+++ b/CoreStoreTests/OrderByTests.swift
@@ -179,7 +179,7 @@ final class OrderByTests: XCTestCase {
    dynamic func test_ThatOrderByClauses_ApplyToFetchRequestsCorrectly() {
        
        let orderBy = OrderBy(.Ascending("key"))
-        let request = NSFetchRequest()
+        let request = CoreStoreFetchRequest()
        orderBy.applyToFetchRequest(request)
        XCTAssertNotNil(request.sortDescriptors)
        XCTAssertEqual(request.sortDescriptors ?? [], orderBy.sortDescriptors)
--- a/CoreStoreTests/StorageInterfaceTests.swift
+++ b/CoreStoreTests/StorageInterfaceTests.swift
@@ -66,13 +66,12 @@ final class StorageInterfaceTests: XCTestCase {
        
        let defaultRootDirectory = defaultSystemDirectory.URLByAppendingPathComponent(
            NSBundle.mainBundle().bundleIdentifier ?? "com.CoreStore.DataStack",
-            isDirectory: true
-        )
+            isDirectory: true)!
        let applicationName = (NSBundle.mainBundle().objectForInfoDictionaryKey("CFBundleName") as? String) ?? "CoreData"
        
        let defaultFileURL = defaultRootDirectory
-            .URLByAppendingPathComponent(applicationName, isDirectory: false)
-            .URLByAppendingPathExtension("sqlite")
+            .URLByAppendingPathComponent(applicationName, isDirectory: false)!
+            .URLByAppendingPathExtension("sqlite")!
        
        XCTAssertEqual(SQLiteStore.defaultRootDirectory, defaultRootDirectory)
        XCTAssertEqual(SQLiteStore.defaultFileURL, defaultFileURL)
@@ -95,8 +94,8 @@ final class StorageInterfaceTests: XCTestCase {
    dynamic func test_ThatFileURLSQLiteStores_ConfigureCorrectly() {
        
        let fileURL = NSURL(fileURLWithPath: NSTemporaryDirectory())
-            .URLByAppendingPathComponent(NSUUID().UUIDString, isDirectory: false)
-            .URLByAppendingPathExtension("db")
+            .URLByAppendingPathComponent(NSUUID().UUIDString, isDirectory: false)!
+            .URLByAppendingPathExtension("db")!
        let bundles = [NSBundle(forClass: self.dynamicType)]
        
        let store = SQLiteStore(
@@ -151,8 +150,8 @@ final class StorageInterfaceTests: XCTestCase {
            ).first!
        
        let legacyDefaultFileURL = legacyDefaultRootDirectory
-            .URLByAppendingPathComponent(DataStack.applicationName, isDirectory: false)
-            .URLByAppendingPathExtension("sqlite")
+            .URLByAppendingPathComponent(DataStack.applicationName, isDirectory: false)!
+            .URLByAppendingPathExtension("sqlite")!
        
        XCTAssertEqual(LegacySQLiteStore.defaultRootDirectory, legacyDefaultRootDirectory)
        XCTAssertEqual(LegacySQLiteStore.defaultFileURL, legacyDefaultFileURL)
@@ -175,8 +174,8 @@ final class StorageInterfaceTests: XCTestCase {
    dynamic func test_ThatFileURLLegacySQLiteStores_ConfigureCorrectly() {
        
        let fileURL = NSURL(fileURLWithPath: NSTemporaryDirectory())
-            .URLByAppendingPathComponent(NSUUID().UUIDString, isDirectory: false)
-            .URLByAppendingPathExtension("db")
+            .URLByAppendingPathComponent(NSUUID().UUIDString, isDirectory: false)!
+            .URLByAppendingPathExtension("db")!
        let bundles = [NSBundle(forClass: self.dynamicType)]
        
        let store = LegacySQLiteStore(
--- a/CoreStoreTests/TransactionTests.swift
+++ b/CoreStoreTests/TransactionTests.swift
@@ -345,6 +345,107 @@ final class TransactionTests: BaseTestCase {
        }
    }
    
+    #if os(iOS) || os(watchOS) || os(tvOS)
+    
+    @objc
+    dynamic func test_ThatSynchronousTransactions_CanCommitWithoutWaitingForMerges() {
+        
+        self.prepareStack { (stack) in
+            
+            let observer = TestListObserver()
+            let monitor = stack.monitorList(
+                From(TestEntity1),
+                OrderBy(.Ascending("testEntityID"))
+            )
+            monitor.addObserver(observer)
+            
+            XCTAssertFalse(monitor.hasObjects())
+            
+            var events = 0
+            let willChangeExpectation = self.expectationForNotification(
+                "listMonitorWillChange:",
+                object: observer,
+                handler: { (note) -> Bool in
+                    
+                    XCTAssertEqual(events, 0)
+                    XCTAssertEqual((note.userInfo ?? [:]), NSDictionary())
+                    defer {
+                        
+                        events += 1
+                    }
+                    return events == 0
+                }
+            )
+            let didInsertObjectExpectation = self.expectationForNotification(
+                "listMonitor:didInsertObject:toIndexPath:",
+                object: observer,
+                handler: { (note) -> Bool in
+                    
+                    XCTAssertEqual(events, 1)
+                    
+                    let userInfo = note.userInfo
+                    XCTAssertNotNil(userInfo)
+                    XCTAssertEqual(
+                        Set(((userInfo as? [String: AnyObject]) ?? [:]).keys),
+                        ["indexPath", "object"]
+                    )
+                    
+                    let indexPath = userInfo?["indexPath"] as? NSIndexPath
+                    XCTAssertEqual(indexPath?.section, 0)
+                    XCTAssertEqual(indexPath?.row, 0)
+                    
+                    let object = userInfo?["object"] as? TestEntity1
+                    XCTAssertEqual(object?.testBoolean, NSNumber(bool: true))
+                    XCTAssertEqual(object?.testNumber, NSNumber(integer: 1))
+                    XCTAssertEqual(object?.testDecimal, NSDecimalNumber(string: "1"))
+                    XCTAssertEqual(object?.testString, "nil:TestEntity1:1")
+                    defer {
+                        
+                        events += 1
+                    }
+                    return events == 1
+                }
+            )
+            let didChangeExpectation = self.expectationForNotification(
+                "listMonitorDidChange:",
+                object: observer,
+                handler: { (note) -> Bool in
+                    
+                    XCTAssertEqual((note.userInfo ?? [:]), NSDictionary())
+                    defer {
+                        
+                        events += 1
+                    }
+                    return events == 2
+                }
+            )
+            let saveExpectation = self.expectationWithDescription("save")
+            stack.beginSynchronous { (transaction) in
+                
+                let object = transaction.create(Into(TestEntity1))
+                object.testBoolean = NSNumber(bool: true)
+                object.testNumber = NSNumber(integer: 1)
+                object.testDecimal = NSDecimalNumber(string: "1")
+                object.testString = "nil:TestEntity1:1"
+                
+                switch transaction.commit() {
+                    
+                case .Success(let hasChanges):
+                    XCTAssertTrue(hasChanges)
+                    saveExpectation.fulfill()
+                    
+                default:
+                    XCTFail()
+                }
+            }
+            XCTAssertEqual(events, 0)
+            XCTAssertEqual(monitor.numberOfObjects(), 0)
+            self.waitAndCheckExpectations()
+        }
+    }
+    
+    #endif
+    
    @objc
    dynamic func test_ThatAsynchronousTransactions_CanPerformCRUDs() {
        
--- a/CoreStoreTests/TweakTests.swift
+++ b/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)
--- a/CoreStoreTests/WhereTests.swift
+++ b/CoreStoreTests/WhereTests.swift
@@ -142,7 +142,7 @@ 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)
--- a/README.md
+++ b/README.md
@@ -17,8 +17,12 @@ 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+
+  - for Swift 2.2 (Xcode 7.3 and iOS 7): Use version [2.0.6](https://github.com/JohnEstropia/CoreStore/releases/tag/2.0.6) or the [master_ios_7_to_9](https://github.com/JohnEstropia/CoreStore/tree/master_ios_7_to_9) branch
+  - for Swift 2.3 (Xcode 8): Use version [2.1.0](https://github.com/JohnEstropia/CoreStore/releases/tag/2.1.0) or the [master](https://github.com/JohnEstropia/CoreStore/tree/master) branch
+  - for Swift 3 (Xcode 8): Use the [swift3_develop](https://github.com/JohnEstropia/CoreStore/tree/swift3_develop) branch
+
 * **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).
@@ -308,7 +312,7 @@ public protocol LocalStorage: StorageInterface {
    var mappingModelBundles: [NSBundle] { get }
    var localStorageOptions: LocalStorageOptions { get }
    func storeOptionsForOptions(options: LocalStorageOptions) -> [String: AnyObject]?
-    func eraseStorageAndWait(soureModel soureModel: NSManagedObjectModel) throws
+    func eraseStorageAndWait(soureModel soureModel: NSManagedObjectModel?) throws
 }
 ```
 If you have custom `NSIncrementalStore` or `NSAtomicStore` subclasses, you can implement this protocol and use it similarly to `SQLiteStore`.
@@ -1411,13 +1415,7 @@ 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 +1427,14 @@ 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 2.3 (Xcode 8)
 - Dependencies:
    - [GCDKit](https://github.com/JohnEstropia/GCDKit)
 - 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 +1443,8 @@ 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" >= 2.1.0
+github "JohnEstropia/GCDKit" >= 1.3.0
 ```
 and run 
 ```
@@ -1459,7 +1457,7 @@ 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:
@@ -1470,15 +1468,6 @@ 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 1.x.x to 2.x.x
 **Obsoleted**
--- a/Sources/Info.plist
+++ b/Sources/Info.plist
@@ -15,7 +15,7 @@
 	<key>CFBundlePackageType</key>
 	<string>FMWK</string>
 	<key>CFBundleShortVersionString</key>
-	<string>2.0.3</string>
+	<string>2.1.2</string>
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>
--- a/Sources/Internal/CoreStoreFetchRequest.swift
+++ b/Sources/Internal/CoreStoreFetchRequest.swift
@@ -1,42 +0,0 @@
-//
-//  CoreStoreFetchRequest.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: - 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 {
-    
-    @objc
-    override var affectedStores: [NSPersistentStore]? {
-        
-        get { return super.affectedStores }
-        set { super.affectedStores = newValue }
-    }
-}
--- a/Sources/Internal/FetchedResultsControllerDelegate.swift
+++ b/Sources/Internal/FetchedResultsControllerDelegate.swift
@@ -108,7 +108,7 @@ internal final class FetchedResultsControllerDelegate: NSObject, NSFetchedResult
            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.
@@ -121,6 +121,16 @@ internal final class FetchedResultsControllerDelegate: NSObject, NSFetchedResult
        // 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
+                where indexPath != nil && newIndexPath != nil {
+                
+                actualType = .Move
+            }
+        }
+        
        switch actualType {
            
        case .Update:
@@ -130,8 +140,8 @@ internal final class FetchedResultsControllerDelegate: NSObject, NSFetchedResult
            }
            if self.deletedSections.contains(section)
                || self.insertedSections.contains(section) {
-                    
-                    return
+                
+                return
            }
            
        case .Move:
--- a/Sources/Internal/NSManagedObjectContext+Querying.swift
+++ b/Sources/Internal/NSManagedObjectContext+Querying.swift
@@ -205,15 +205,22 @@ internal extension NSManagedObjectContext {
    internal func fetchCount(fetchRequest: NSFetchRequest) -> Int? {
        
        var count = 0
-        var error: NSError?
+        var countError: ErrorType?
        self.performBlockAndWait {
            
-            count = self.countForFetchRequest(fetchRequest, error: &error)
+            do {
+                
+                count = try self.countForFetchRequest(fetchRequest)
+            }
+            catch {
+                
+                countError = error
+            }
        }
        if count == NSNotFound {
            
            CoreStore.log(
-                CoreStoreError(error),
+                CoreStoreError(countError),
                "Failed executing fetch request."
            )
            return nil
--- a/Sources/Internal/NSManagedObjectContext+Transaction.swift
+++ b/Sources/Internal/NSManagedObjectContext+Transaction.swift
@@ -101,8 +101,8 @@ internal extension NSManagedObjectContext {
    }
    
    @nonobjc
-    internal func saveSynchronously() -> SaveResult {
-        
+    internal func saveSynchronously(waitForMerge waitForMerge: Bool) -> SaveResult {
+      
        var result = SaveResult(hasChanges: false)
        
        self.performBlockAndWait {
@@ -114,7 +114,7 @@ internal extension NSManagedObjectContext {
            
            do {
                
-                self.isSavingSynchronously = true
+                self.isSavingSynchronously = waitForMerge
                try self.save()
                self.isSavingSynchronously = nil
            }
@@ -131,7 +131,7 @@ internal extension NSManagedObjectContext {
            
            if let parentContext = self.parentContext where self.shouldCascadeSavesToParent {
                
-                switch parentContext.saveSynchronously() {
+                switch parentContext.saveSynchronously(waitForMerge: waitForMerge) {
                    
                case .Success:
                    result = SaveResult(hasChanges: true)
--- a/Sources/Internal/NSManagedObjectModel+Setup.swift
+++ b/Sources/Internal/NSManagedObjectModel+Setup.swift
@@ -42,7 +42,7 @@ internal extension NSManagedObjectModel {
        }
        
        let modelFileURL = NSURL(fileURLWithPath: modelFilePath)
-        let versionInfoPlistURL = modelFileURL.URLByAppendingPathComponent("VersionInfo.plist", isDirectory: false)
+        let versionInfoPlistURL = modelFileURL.URLByAppendingPathComponent("VersionInfo.plist", isDirectory: false)!
        
        guard let versionInfo = NSDictionary(contentsOfURL: versionInfoPlistURL),
            let versionHashes = versionInfo["NSManagedObjectModel_VersionHashes"] as? [String: AnyObject] else {
@@ -83,7 +83,7 @@ internal extension NSManagedObjectModel {
        var modelVersionFileURL: NSURL?
        for modelVersion in modelVersions {
            
-            let fileURL = modelFileURL.URLByAppendingPathComponent("\(modelVersion).mom", isDirectory: false)
+            let fileURL = modelFileURL.URLByAppendingPathComponent("\(modelVersion).mom", isDirectory: false)!
            
            if modelVersion == currentModelVersion {
                
@@ -190,7 +190,7 @@ internal extension NSManagedObjectModel {
        }
        
        let versionModelFileURL = modelFileURL.URLByAppendingPathComponent("\(modelVersion).mom", isDirectory: false)
-        guard let model = NSManagedObjectModel(contentsOfURL: versionModelFileURL) else {
+        guard let model = NSManagedObjectModel(contentsOfURL: versionModelFileURL!) else {
            
            return nil
        }
--- a/Sources/Internal/NotificationObserver.swift
+++ b/Sources/Internal/NotificationObserver.swift
@@ -32,14 +32,10 @@ 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) {
        
-        self.notificationName = notificationName
-        self.object = object
        self.observer = NSNotificationCenter.defaultCenter().addObserverForName(
            notificationName,
            object: object,
@@ -50,10 +46,6 @@ internal final class NotificationObserver {
    
    deinit {
        
-        NSNotificationCenter.defaultCenter().removeObserver(
-            self.observer,
-            name: self.notificationName,
-            object: self.object
-        )
+        NSNotificationCenter.defaultCenter().removeObserver(self.observer)
    }
 }
--- a/Sources/Migrating/DataStack+Migration.swift
+++ b/Sources/Migrating/DataStack+Migration.swift
@@ -223,7 +223,7 @@ public extension DataStack {
                                
                                do {
                                    
-                                    try _ = self.model[metadata].flatMap(storage.eraseStorageAndWait)
+                                    _ = try storage.eraseStorageAndWait(soureModel: self.model[metadata])
                                    try self.addStorageAndWait(storage)
                                    
                                    GCDQueue.Main.async {
@@ -388,7 +388,7 @@ public extension DataStack {
                        URL: cacheFileURL,
                        options: storeOptions
                    )
-                    try _ = self.model[metadata].flatMap(storage.eraseStorageAndWait)
+                    _ = try storage.eraseStorageAndWait(soureModel: self.model[metadata])
                    
                    try self.createPersistentStoreFromStorage(
                        storage,
@@ -756,20 +756,19 @@ public extension DataStack {
        let fileURL = storage.fileURL
        
        let temporaryDirectoryURL = NSURL(fileURLWithPath: NSTemporaryDirectory(), isDirectory: true)
-            .URLByAppendingPathComponent(NSBundle.mainBundle().bundleIdentifier ?? "com.CoreStore.DataStack")
+            .URLByAppendingPathComponent(NSBundle.mainBundle().bundleIdentifier ?? "com.CoreStore.DataStack")!
            .URLByAppendingPathComponent(NSProcessInfo().globallyUniqueString)
        
        let fileManager = NSFileManager.defaultManager()
        try! fileManager.createDirectoryAtURL(
-            temporaryDirectoryURL,
+            temporaryDirectoryURL!,
            withIntermediateDirectories: true,
            attributes: nil
        )
        
-        let temporaryFileURL = temporaryDirectoryURL.URLByAppendingPathComponent(
+        let temporaryFileURL = temporaryDirectoryURL!.URLByAppendingPathComponent(
            fileURL.lastPathComponent!,
-            isDirectory: false
-        )
+            isDirectory: false)!
        
        let migrationManager = MigrationManager(
            sourceModel: sourceModel,
--- a/Sources/ObjectiveC/CSAsynchronousDataTransaction.swift
+++ b/Sources/ObjectiveC/CSAsynchronousDataTransaction.swift
@@ -144,7 +144,7 @@ public final class CSAsynchronousDataTransaction: CSBaseDataTransaction {
    
    // MARK: CoreStoreObjectiveCType
    
-    internal typealias SwiftType = AsynchronousDataTransaction
+    public typealias SwiftType = AsynchronousDataTransaction
    
    public override var bridgeToSwift: AsynchronousDataTransaction {
        
@@ -153,21 +153,21 @@ public final class CSAsynchronousDataTransaction: CSBaseDataTransaction {
    
    public required init(_ swiftValue: AsynchronousDataTransaction) {
        
-        super.init(swiftValue)
+        super.init(swiftValue as BaseDataTransaction)
    }
    
    public required init(_ swiftValue: BaseDataTransaction) {
        
-        fatalError("init(_:) requires an AsynchronousDataTransaction instance")
+        super.init(swiftValue as! AsynchronousDataTransaction)
    }
 }


 // MARK: - AsynchronousDataTransaction

-extension AsynchronousDataTransaction {
+extension AsynchronousDataTransaction: CoreStoreSwiftType {
    
    // MARK: CoreStoreSwiftType
    
-    internal typealias ObjectiveCType = CSAsynchronousDataTransaction
+    public typealias ObjectiveCType = CSAsynchronousDataTransaction
 }
--- a/Sources/ObjectiveC/CSBaseDataTransaction.swift
+++ b/Sources/ObjectiveC/CSBaseDataTransaction.swift
@@ -292,8 +292,6 @@ public class CSBaseDataTransaction: NSObject, CoreStoreObjectiveCType {
    
    // MARK: CoreStoreObjectiveCType
    
-    public typealias SwiftType = BaseDataTransaction
-    
    public required init(_ swiftValue: BaseDataTransaction) {
        
        self.swiftTransaction = swiftValue
@@ -312,11 +310,11 @@ public class CSBaseDataTransaction: NSObject, CoreStoreObjectiveCType {
 }


-// MARK: - BaseDataTransaction
-
-extension BaseDataTransaction: CoreStoreSwiftType {
-    
-    // MARK: CoreStoreSwiftType
-    
-    public typealias ObjectiveCType = CSBaseDataTransaction
-}
+//// MARK: - BaseDataTransaction
+//
+//extension BaseDataTransaction: CoreStoreSwiftType {
+//    
+//    // MARK: CoreStoreSwiftType
+//    
+//    public typealias ObjectiveCType = CSBaseDataTransaction
+//}
--- a/Sources/ObjectiveC/CSSQliteStore.swift
+++ b/Sources/ObjectiveC/CSSQliteStore.swift
@@ -154,7 +154,7 @@ public final class CSSQLiteStore: NSObject, CSLocalStorage, CoreStoreObjectiveCT
     Called by the `CSDataStack` to perform actual deletion of the store file from disk. Do not call directly! The `sourceModel` argument is a hint for the existing store's model version. For `CSSQLiteStore`, this converts the database's WAL journaling mode to DELETE before deleting the file.
     */
    @objc
-    public func eraseStorageAndWait(soureModel soureModel: NSManagedObjectModel, error: NSErrorPointer) -> Bool {
+    public func eraseStorageAndWait(soureModel soureModel: NSManagedObjectModel?, error: NSErrorPointer) -> Bool {
        
        return bridge(error) {
            
--- a/Sources/ObjectiveC/CSStorageInterface.swift
+++ b/Sources/ObjectiveC/CSStorageInterface.swift
@@ -121,5 +121,5 @@ public protocol CSLocalStorage: CSStorageInterface {
     Called by the `CSDataStack` to perform actual deletion of the store file from disk. Do not call directly! The `sourceModel` argument is a hint for the existing store's model version. Implementers can use the `sourceModel` to perform necessary store operations. (SQLite stores for example, can convert WAL journaling mode to DELETE before deleting)
     */
    @objc
-    func eraseStorageAndWait(soureModel soureModel: NSManagedObjectModel, error: NSErrorPointer) -> Bool
+    func eraseStorageAndWait(soureModel soureModel: NSManagedObjectModel?, error: NSErrorPointer) -> Bool
 }
--- a/Sources/ObjectiveC/CSSynchronousDataTransaction.swift
+++ b/Sources/ObjectiveC/CSSynchronousDataTransaction.swift
@@ -143,7 +143,7 @@ public final class CSSynchronousDataTransaction: CSBaseDataTransaction {
    
    // MARK: CoreStoreObjectiveCType
    
-    internal typealias SwiftType = SynchronousDataTransaction
+    public typealias SwiftType = SynchronousDataTransaction
    
    public override var bridgeToSwift: SynchronousDataTransaction {
        
@@ -152,21 +152,21 @@ public final class CSSynchronousDataTransaction: CSBaseDataTransaction {
    
    public required init(_ swiftValue: SynchronousDataTransaction) {
        
-        super.init(swiftValue)
+        super.init(swiftValue as BaseDataTransaction)
    }
    
    public required init(_ swiftValue: BaseDataTransaction) {
        
-        fatalError("init(_:) requires a BaseDataTransaction instance")
+        super.init(swiftValue as! SynchronousDataTransaction)
    }
 }


 // MARK: - SynchronousDataTransaction

-extension SynchronousDataTransaction {
+extension SynchronousDataTransaction: CoreStoreSwiftType {
    
    // MARK: CoreStoreSwiftType
    
-    internal typealias ObjectiveCType = CSSynchronousDataTransaction
+    public typealias ObjectiveCType = CSSynchronousDataTransaction
 }
--- a/Sources/ObjectiveC/CSUnsafeDataTransaction.swift
+++ b/Sources/ObjectiveC/CSUnsafeDataTransaction.swift
@@ -174,7 +174,7 @@ public final class CSUnsafeDataTransaction: CSBaseDataTransaction {
    
    // MARK: CoreStoreObjectiveCType
    
-    internal typealias SwiftType = UnsafeDataTransaction
+    public typealias SwiftType = UnsafeDataTransaction
    
    public override var bridgeToSwift: UnsafeDataTransaction {
        
@@ -183,21 +183,21 @@ public final class CSUnsafeDataTransaction: CSBaseDataTransaction {
    
    public required init(_ swiftValue: UnsafeDataTransaction) {
        
-        super.init(swiftValue)
+        super.init(swiftValue as BaseDataTransaction)
    }
    
    public required init(_ swiftValue: BaseDataTransaction) {
        
-        fatalError("init(_:) requires an UnsafeDataTransaction instance")
+        super.init(swiftValue as! UnsafeDataTransaction)
    }
 }


 // MARK: - UnsafeDataTransaction

-extension UnsafeDataTransaction {
+extension UnsafeDataTransaction: CoreStoreSwiftType {
    
    // MARK: CoreStoreSwiftType
    
-    internal typealias ObjectiveCType = CSUnsafeDataTransaction
+    public typealias ObjectiveCType = CSUnsafeDataTransaction
 }
--- a/Sources/ObjectiveC/CoreStoreBridge.h
+++ b/Sources/ObjectiveC/CoreStoreBridge.h
@@ -570,4 +570,16 @@ CORESTORE_EXTERN
 CSWhere *_Nonnull CSWherePredicate(NSPredicate *_Nonnull predicate) CORESTORE_RETURNS_RETAINED;


+#pragma 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
+NS_SWIFT_NAME(CoreStoreFetchRequest)
+@interface _CSFetchRequest: NSFetchRequest
+
+@property (nullable, nonatomic, copy, readonly) NSArray<NSPersistentStore *> *safeAffectedStores;
+
+@end
+
+
 #endif /* CoreStoreBridge_h */
--- a/Sources/ObjectiveC/CoreStoreBridge.m
+++ b/Sources/ObjectiveC/CoreStoreBridge.m
@@ -26,23 +26,8 @@

 #import "CoreStoreBridge.h"

-#if USE_FRAMEWORKS
 #import <CoreStore/CoreStore-Swift.h>

-#elif !defined(SWIFT_OBJC_INTERFACE_HEADER_NAME)
-#error Add "SWIFT_OBJC_INTERFACE_HEADER_NAME=$(SWIFT_OBJC_INTERFACE_HEADER_NAME)" to the project's GCC_PREPROCESSOR_DEFINITIONS settings
-
-#elif __has_include(SWIFT_OBJC_INTERFACE_HEADER_NAME)
-#import SWIFT_OBJC_INTERFACE_HEADER_NAME
-
-#else
-#define _STRINGIFY(x)    #x
-#define STRINGIFY(x)    _STRINGIFY(x)
-#import STRINGIFY(SWIFT_OBJC_INTERFACE_HEADER_NAME)
-
-#endif
-
-

 #pragma mark - Clauses

@@ -233,3 +218,40 @@ CSWhere *_Nonnull CSWherePredicate(NSPredicate *_Nonnull predicate) CORESTORE_RE
    
    return [[CSWhere alloc] initWithPredicate:predicate];
 }
+
+
+#pragma mark CoreStoreFetchRequest
+
+@interface _CSFetchRequest ()
+
+@property (nullable, nonatomic, copy) NSArray<NSPersistentStore *> *safeAffectedStores;
+@property (nullable, nonatomic, assign) CFArrayRef releaseArray;
+
+@end
+
+@implementation _CSFetchRequest
+
+// MARK: NSFetchRequest
+
+- (void)setAffectedStores:(NSArray<NSPersistentStore *> *_Nullable)affectedStores {
+    
+    // Bugfix for NSFetchRequest messing up memory management for `affectedStores`
+    // http://stackoverflow.com/questions/14396375/nsfetchedresultscontroller-crashes-in-ios-6-if-affectedstores-is-specified
+    
+    if (NSFoundationVersionNumber < NSFoundationVersionNumber10_0) {
+        
+        self.safeAffectedStores = affectedStores;
+        [super setAffectedStores:affectedStores];
+        return;
+    }
+    if (self.releaseArray != NULL) {
+        
+        CFRelease(self.releaseArray);
+        self.releaseArray = NULL;
+    }
+    self.safeAffectedStores = affectedStores;
+    [super setAffectedStores:affectedStores];
+    self.releaseArray = CFBridgingRetain([super affectedStores]);
+}
+
+@end
--- a/Sources/ObjectiveC/CoreStoreBridge.swift
+++ b/Sources/ObjectiveC/CoreStoreBridge.swift
@@ -118,12 +118,18 @@ internal func bridge<T: CoreStoreSwiftType>(error: NSErrorPointer, @noescape _ c
    do {
        
        let result = try closure()
-        error.memory = nil
+        if error != nil {
+            
+            error.memory = nil
+        }
        return result.bridgeToObjectiveC
    }
    catch let swiftError {
        
-        error.memory = swiftError.bridgeToObjectiveC
+        if error != nil {
+            
+            error.memory = swiftError.bridgeToObjectiveC
+        }
        return nil
    }
 }
@@ -133,12 +139,18 @@ internal func bridge(error: NSErrorPointer, @noescape _ closure: () throws -> Vo
    do {
        
        try closure()
-        error.memory = nil
+        if error != nil {
+            
+            error.memory = nil
+        }
        return true
    }
    catch let swiftError {
        
-        error.memory = swiftError.bridgeToObjectiveC
+        if error != nil {
+            
+            error.memory = swiftError.bridgeToObjectiveC
+        }
        return false
    }
 }
@@ -148,12 +160,18 @@ internal func bridge<T>(error: NSErrorPointer, @noescape _ closure: () throws ->
    do {
        
        let result = try closure()
-        error.memory = nil
+        if error != nil {
+            
+            error.memory = nil
+        }
        return result
    }
    catch let swiftError {
        
-        error.memory = swiftError.bridgeToObjectiveC
+        if error != nil {
+            
+            error.memory = swiftError.bridgeToObjectiveC
+        }
        return nil
    }
 }
@@ -163,12 +181,18 @@ internal func bridge<T: CoreStoreSwiftType>(error: NSErrorPointer, @noescape _ c
    do {
        
        let result = try closure()
-        error.memory = nil
+        if error != nil {
+            
+            error.memory = nil
+        }
        return result.map { $0.bridgeToObjectiveC }
    }
    catch let swiftError {
        
-        error.memory = swiftError.bridgeToObjectiveC
+        if error != nil {
+            
+            error.memory = swiftError.bridgeToObjectiveC
+        }
        return nil
    }
 }
--- a/Sources/Observing/ListMonitor.swift
+++ b/Sources/Observing/ListMonitor.swift
@@ -1123,7 +1123,7 @@ public final class ListMonitor<T: NSManagedObject>: Hashable {
                self.isPersistentStoreChanging = true
                
                guard let removedStores = (note.userInfo?[NSRemovedPersistentStoresKey] as? [NSPersistentStore]).flatMap(Set.init)
-                    where !Set(self.fetchedResultsController.fetchRequest.affectedStores ?? []).intersect(removedStores).isEmpty else {
+                    where !Set((self.fetchedResultsController.fetchRequest as! CoreStoreFetchRequest).safeAffectedStores ?? []).intersect(removedStores).isEmpty else {
                        
                        return
                }
@@ -1144,7 +1144,7 @@ public final class ListMonitor<T: NSManagedObject>: Hashable {
                
                if !self.isPendingRefetch {
                    
-                    let previousStores = Set(self.fetchedResultsController.fetchRequest.affectedStores ?? [])
+                    let previousStores = Set((self.fetchedResultsController.fetchRequest as! CoreStoreFetchRequest).safeAffectedStores ?? [])
                    let currentStores = previousStores
                        .subtract(note.userInfo?[NSRemovedPersistentStoresKey] as? [NSPersistentStore] ?? [])
                        .union(note.userInfo?[NSAddedPersistentStoresKey] as? [NSPersistentStore] ?? [])
--- a/Sources/Setup/DataStack.swift
+++ b/Sources/Setup/DataStack.swift
@@ -263,7 +263,7 @@ public final class DataStack {
                        URL: fileURL,
                        options: storeOptions
                    )
-                    try _ = self.model[metadata].flatMap(storage.eraseStorageAndWait)
+                    _ = try storage.eraseStorageAndWait(soureModel: self.model[metadata])
                    
                    try self.createPersistentStoreFromStorage(
                        storage,
@@ -359,7 +359,7 @@ public final class DataStack {
                        URL: cacheFileURL,
                        options: storeOptions
                    )
-                    try _ = self.model[metadata].flatMap(storage.eraseStorageAndWait)
+                    _ = try storage.eraseStorageAndWait(soureModel: self.model[metadata])
                    
                    try self.createPersistentStoreFromStorage(
                        storage,
--- a/Sources/Setup/StorageInterfaces/ICloudStore.swift
+++ b/Sources/Setup/StorageInterfaces/ICloudStore.swift
@@ -424,11 +424,19 @@ public class ICloudStore: CloudStorage {
    /**
     Called by the `DataStack` to perform actual deletion of the store file from disk. Do not call directly! The `sourceModel` argument is a hint for the existing store's model version. For `SQLiteStore`, this converts the database's WAL journaling mode to DELETE before deleting the file.
     */
-    public func eraseStorageAndWait(soureModel soureModel: NSManagedObjectModel) throws {
+    public func eraseStorageAndWait(soureModel soureModel: NSManagedObjectModel?) throws {
        
        // TODO: check if attached to persistent store
        
        let cacheFileURL = self.cacheFileURL
+        guard let soureModel = soureModel else {
+            
+            let fileManager = NSFileManager.defaultManager()
+            try fileManager.removeItemAtURL(cacheFileURL)
+            _ = try? fileManager.removeItemAtPath("\(cacheFileURL.absoluteString)-wal")
+            _ = try? fileManager.removeItemAtPath("\(cacheFileURL.absoluteString)-shm")
+            return
+        }
        try cs_autoreleasepool {
            
            let journalUpdatingCoordinator = NSPersistentStoreCoordinator(managedObjectModel: soureModel)
--- a/Sources/Setup/StorageInterfaces/LegacySQLiteStore.swift
+++ b/Sources/Setup/StorageInterfaces/LegacySQLiteStore.swift
@@ -65,8 +65,7 @@ public final class LegacySQLiteStore: LocalStorage, DefaultInitializableStore {
        
        self.fileURL = LegacySQLiteStore.defaultRootDirectory.URLByAppendingPathComponent(
            fileName,
-            isDirectory: false
-        )
+            isDirectory: false)!
        self.configuration = configuration
        self.mappingModelBundles = mappingModelBundles
        self.localStorageOptions = localStorageOptions
@@ -165,11 +164,19 @@ public final class LegacySQLiteStore: LocalStorage, DefaultInitializableStore {
    /**
     Called by the `DataStack` to perform actual deletion of the store file from disk. Do not call directly! The `sourceModel` argument is a hint for the existing store's model version. For `SQLiteStore`, this converts the database's WAL journaling mode to DELETE before deleting the file.
     */
-    public func eraseStorageAndWait(soureModel soureModel: NSManagedObjectModel) throws {
+    public func eraseStorageAndWait(soureModel soureModel: NSManagedObjectModel?) throws {
        
        // TODO: check if attached to persistent store
        
        let fileURL = self.fileURL
+        guard let soureModel = soureModel else {
+            
+            let fileManager = NSFileManager.defaultManager()
+            try fileManager.removeItemAtURL(fileURL)
+            _ = try? fileManager.removeItemAtPath("\(fileURL.absoluteString)-wal")
+            _ = try? fileManager.removeItemAtPath("\(fileURL.absoluteString)-shm")
+            return
+        }
        try cs_autoreleasepool {
            
            let journalUpdatingCoordinator = NSPersistentStoreCoordinator(managedObjectModel: soureModel)
@@ -202,8 +209,8 @@ public final class LegacySQLiteStore: LocalStorage, DefaultInitializableStore {
    }()
    
    internal static let defaultFileURL = LegacySQLiteStore.defaultRootDirectory
-        .URLByAppendingPathComponent(DataStack.applicationName, isDirectory: false)
-        .URLByAppendingPathExtension("sqlite")
+        .URLByAppendingPathComponent(DataStack.applicationName, isDirectory: false)!
+        .URLByAppendingPathExtension("sqlite")!
    
    
    // MARK: Private
--- a/Sources/Setup/StorageInterfaces/SQLiteStore.swift
+++ b/Sources/Setup/StorageInterfaces/SQLiteStore.swift
@@ -63,7 +63,7 @@ public final class SQLiteStore: LocalStorage, DefaultInitializableStore {
    public init(fileName: String, configuration: String? = nil, mappingModelBundles: [NSBundle] = NSBundle.allBundles(), localStorageOptions: LocalStorageOptions = nil) {
        
        self.fileURL = SQLiteStore.defaultRootDirectory
-            .URLByAppendingPathComponent(fileName, isDirectory: false)
+            .URLByAppendingPathComponent(fileName, isDirectory: false)!
        self.configuration = configuration
        self.mappingModelBundles = mappingModelBundles
        self.localStorageOptions = localStorageOptions
@@ -79,7 +79,7 @@ public final class SQLiteStore: LocalStorage, DefaultInitializableStore {
     */
    public init() {
        
-        self.fileURL = SQLiteStore.defaultFileURL
+        self.fileURL = SQLiteStore.defaultFileURL!
        self.configuration = nil
        self.mappingModelBundles = NSBundle.allBundles()
        self.localStorageOptions = nil
@@ -162,11 +162,19 @@ public final class SQLiteStore: LocalStorage, DefaultInitializableStore {
    /**
     Called by the `DataStack` to perform actual deletion of the store file from disk. Do not call directly! The `sourceModel` argument is a hint for the existing store's model version. For `SQLiteStore`, this converts the database's WAL journaling mode to DELETE before deleting the file.
     */
-    public func eraseStorageAndWait(soureModel soureModel: NSManagedObjectModel) throws {
+    public func eraseStorageAndWait(soureModel soureModel: NSManagedObjectModel?) throws {
        
        // TODO: check if attached to persistent store
        
        let fileURL = self.fileURL
+        guard let soureModel = soureModel else {
+            
+            let fileManager = NSFileManager.defaultManager()
+            try fileManager.removeItemAtURL(fileURL)
+            _ = try? fileManager.removeItemAtPath("\(fileURL.absoluteString)-wal")
+            _ = try? fileManager.removeItemAtPath("\(fileURL.absoluteString)-shm")
+            return
+        }
        try cs_autoreleasepool {
            
            let journalUpdatingCoordinator = NSPersistentStoreCoordinator(managedObjectModel: soureModel)
@@ -198,15 +206,13 @@ public final class SQLiteStore: LocalStorage, DefaultInitializableStore {
        
        return defaultSystemDirectory.URLByAppendingPathComponent(
            NSBundle.mainBundle().bundleIdentifier ?? "com.CoreStore.DataStack",
-            isDirectory: true
-        )
+            isDirectory: true)!
    }()
    
    internal static let defaultFileURL = SQLiteStore.defaultRootDirectory
        .URLByAppendingPathComponent(
            (NSBundle.mainBundle().objectForInfoDictionaryKey("CFBundleName") as? String) ?? "CoreData",
-            isDirectory: false
-        )
+            isDirectory: false)!
        .URLByAppendingPathExtension("sqlite")
    
    
--- a/Sources/Setup/StorageInterfaces/StorageInterface.swift
+++ b/Sources/Setup/StorageInterfaces/StorageInterface.swift
@@ -158,7 +158,7 @@ public protocol LocalStorage: StorageInterface {
    /**
     Called by the `DataStack` to perform actual deletion of the store file from disk. **Do not call directly!** The `sourceModel` argument is a hint for the existing store's model version. Implementers can use the `sourceModel` to perform necessary store operations. (SQLite stores for example, can convert WAL journaling mode to DELETE before deleting)
     */
-    func eraseStorageAndWait(soureModel soureModel: NSManagedObjectModel) throws
+    func eraseStorageAndWait(soureModel soureModel: NSManagedObjectModel?) throws
 }

 internal extension LocalStorage {
@@ -242,7 +242,7 @@ public protocol CloudStorage: StorageInterface {
    /**
     Called by the `DataStack` to perform actual deletion of the store file from disk. **Do not call directly!** The `sourceModel` argument is a hint for the existing store's model version. Implementers can use the `sourceModel` to perform necessary store operations. (Cloud stores for example, can set the NSPersistentStoreRemoveUbiquitousMetadataOption option before deleting)
     */
-    func eraseStorageAndWait(soureModel soureModel: NSManagedObjectModel) throws
+    func eraseStorageAndWait(soureModel soureModel: NSManagedObjectModel?) throws
 }

 internal extension CloudStorage {
--- a/Sources/Transactions/SynchronousDataTransaction.swift
+++ b/Sources/Transactions/SynchronousDataTransaction.swift
@@ -38,7 +38,8 @@ import CoreData
 public final class SynchronousDataTransaction: BaseDataTransaction {
    
    /**
-     Saves the transaction changes and waits for completion synchronously. This method should not be used after the `commit()` method was already called once.
+     Saves the transaction changes and waits for completion synchronously. This method should not be used after the `commit()` or `commitAndWait()` method was already called once.
+     - Important: Unlike `SynchronousDataTransaction.commit()`, this method waits for all observers to be notified of the changes before returning. This results in more predictable data update order, but may risk triggering deadlocks.
     
     - returns: a `SaveResult` containing the success or failure information
     */
@@ -55,11 +56,35 @@ public final class SynchronousDataTransaction: BaseDataTransaction {
        
        self.isCommitted = true
        
-        let result = self.context.saveSynchronously()
+        let result = self.context.saveSynchronously(waitForMerge: true)
        self.result = result
        return result
    }
    
+    /**
+     Saves the transaction changes and waits for completion synchronously. This method should not be used after the `commit()` or `commitAndWait()` method was already called once.
+     - Important: Unlike `SynchronousDataTransaction.commitAndWait()`, this method does not wait for observers to be notified of the changes before returning. This results in lower risk for deadlocks, but the updated data may not have been propagated to the `DataStack` after returning.
+     
+     - returns: a `SaveResult` containing the success or failure information
+     */
+    public func commit() -> SaveResult {
+        
+        CoreStore.assert(
+            self.transactionQueue.isCurrentExecutionContext(),
+            "Attempted to commit a \(cs_typeName(self)) outside its designated queue."
+        )
+        CoreStore.assert(
+            !self.isCommitted,
+            "Attempted to commit a \(cs_typeName(self)) more than once."
+        )
+        
+        self.isCommitted = true
+        
+        let result = self.context.saveSynchronously(waitForMerge: false)
+        self.result = result
+        return result
+    }
+  
    /**
     Begins a child transaction synchronously where `NSManagedObject` creates, updates, and deletes can be made. This method should not be used after the `commit()` method was already called once.
     
--- a/Sources/Transactions/UnsafeDataTransaction.swift
+++ b/Sources/Transactions/UnsafeDataTransaction.swift
@@ -58,7 +58,7 @@ public final class UnsafeDataTransaction: BaseDataTransaction {
     */
    public func commitAndWait() -> SaveResult {
        
-        let result = self.context.saveSynchronously()
+        let result = self.context.saveSynchronously(waitForMerge: true)
        self.result = result
        return result
    }
Author	SHA1	Message	Date
John Estropia	65ac069a0b	skip observer testing on macOS	2016-09-30 13:32:31 +09:00
John Estropia	862ef27374	version bump, cleanup, unit test	2016-09-30 13:28:19 +09:00
John Estropia	243b6a76d5	Merge pull request #104 from colinmorelli/feature/sync-transaction-async-merge Fixes #98 (deadlock when merge happens while main queue is querying)	2016-09-30 12:38:28 +09:00
Colin Morelli	8be20370d5	Fixes #98 (deadlock when merge happens while main queue is querying)	2016-09-29 14:47:51 -04:00
John Estropia	ed8c7b35e8	Reduce leaking (a little) on the workaround for NSFetchRequest.affectedStores ARC bug	2016-09-27 17:31:08 +09:00
John Rommel Estropia	4d2ebe4ea8	workaround #100 (NSFetchRequest.affectedStores ARC bug)	2016-09-27 02:39:28 +09:00
John Rommel Estropia	f18d62f643	travis yml update	2016-09-17 14:27:36 +09:00
John Rommel Estropia	af141d4a31	travis yml update	2016-09-17 14:26:33 +09:00
John Rommel Estropia	2da659a967	travis yml update	2016-09-17 14:14:29 +09:00
John Rommel Estropia	e5f162c5e1	minor readme edits	2016-09-17 13:59:04 +09:00
John Rommel Estropia	effa231719	fix travis	2016-09-17 13:37:00 +09:00
John Rommel Estropia	6cef8f4b4f	updated travis yml	2016-09-17 13:23:56 +09:00
John Rommel Estropia	aa6bceaaf3	working for Swift 2.3!	2016-09-17 12:22:25 +09:00
John Rommel Estropia	0dbd05b172	version bump	2016-09-11 14:30:32 +09:00
John Rommel Estropia	243c4044ab	fix bridging producing base abstract class instead of subclass concrete class	2016-09-11 14:30:25 +09:00
John Rommel Estropia	df835114cb	ignore errors when deleting wal files	2016-09-10 22:57:45 +09:00
John Rommel Estropia	f99d3cc21a	fix RecreateStoreOnModelMismatch option not working when an existing xcdatamodel gets updated without adding a new version	2016-09-10 22:51:33 +09:00
John Rommel Estropia	4a34012d58	version bump	2016-09-08 00:40:58 +09:00
John Estropia	45690a29c6	Merge pull request #92 from ThibaultVlacich/develop Add DEBUG flag to the Debug config	2016-09-07 19:01:19 +09:00
Thibault Vlacich	0d4d036a86	Add DEBUG flag to the Debug config	2016-09-07 10:43:43 +02:00
John Estropia	ed0fdc76fe	update podspec	2016-09-06 11:19:38 +09:00
John Estropia	58f4907575	Prevent retain cycles in NSManagedObjectContext (fixes #87 )	2016-09-06 11:13:16 +09:00