Merge branch 'develop'

update podfile
changed keyPath string utility to use String initializer
2026-01-12 12:20:30 +01:00 · 2017-12-29 01:09:07 +09:00 · 2017-12-29 00:53:48 +09:00 · 2017-12-29 00:05:11 +09:00 · 2017-11-19 15:35:29 +09:00 · 2017-11-19 15:34:09 +09:00
138 changed files with 8895 additions and 3612 deletions
--- a/.cocoapods.yml
+++ b/.cocoapods.yml
@@ -0,0 +1,2 @@
+try:
+  project: 'CoreStore.xcworkspace'
--- a/.swift-version
+++ b/.swift-version
@@ -1 +1 @@
-3.1
+4.0
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,5 @@
 language: objective-c
-osx_image: xcode8.3
+osx_image: xcode9
 sudo: false
 git:
  submodules: false
@@ -10,24 +10,29 @@ env:
  - LC_CTYPE=en_US.UTF-8
  - LANG=en_US.UTF-8
  matrix:
-    - DESTINATION="OS=10.3,name=iPhone 7"          SCHEME="CoreStore iOS"     SDK=iphonesimulator10.3  RUN_TESTS="YES" POD_LINT="NO"
-    - DESTINATION="OS=10.1,name=iPhone 7"          SCHEME="CoreStore iOS"     SDK=iphonesimulator10.3  RUN_TESTS="YES" POD_LINT="NO"
-    - DESTINATION="OS=9.0,name=iPhone 6 Plus"      SCHEME="CoreStore iOS"     SDK=iphonesimulator10.3  RUN_TESTS="YES" POD_LINT="NO"
-    - DESTINATION="OS=8.4,name=iPhone 6"           SCHEME="CoreStore iOS"     SDK=iphonesimulator10.3  RUN_TESTS="YES" POD_LINT="NO"
-    - DESTINATION="OS=8.3,name=iPhone 5S"          SCHEME="CoreStore iOS"     SDK=iphonesimulator10.3  RUN_TESTS="YES" POD_LINT="NO"
-    - DESTINATION="OS=8.3,name=iPhone 5"           SCHEME="CoreStore iOS"     SDK=iphonesimulator10.3  RUN_TESTS="YES" POD_LINT="NO"
-    - DESTINATION="OS=8.3,name=iPhone 4S"          SCHEME="CoreStore iOS"     SDK=iphonesimulator10.3  RUN_TESTS="YES" POD_LINT="NO"
-    - DESTINATION="arch=x86_64"                    SCHEME="CoreStore OSX"     SDK=macosx10.12          RUN_TESTS="YES" POD_LINT="NO"
-    - DESTINATION="OS=3.2,name=Apple Watch - 42mm" SCHEME="CoreStore watchOS" SDK=watchsimulator3.2    RUN_TESTS="NO"  POD_LINT="NO"
-    - DESTINATION="OS=2.2,name=Apple Watch - 42mm" SCHEME="CoreStore watchOS" SDK=watchsimulator3.2    RUN_TESTS="NO"  POD_LINT="NO"
-    - DESTINATION="OS=10.2,name=Apple TV 1080p"    SCHEME="CoreStore tvOS"    SDK=appletvsimulator10.2 RUN_TESTS="YES" POD_LINT="NO"
-    - DESTINATION="OS=9.2,name=Apple TV 1080p"     SCHEME="CoreStore tvOS"    SDK=appletvsimulator10.2 RUN_TESTS="YES" POD_LINT="NO"
+    - DESTINATION="OS=11.0,name=iPhone 8"          SCHEME="CoreStore iOS"     SDK=iphonesimulator11.0  RUN_TESTS="YES" POD_LINT="NO"
+    - DESTINATION="OS=10.3,name=iPhone 7"          SCHEME="CoreStore iOS"     SDK=iphonesimulator11.0  RUN_TESTS="YES" POD_LINT="NO"
+    - DESTINATION="OS=10.1,name=iPhone 7"          SCHEME="CoreStore iOS"     SDK=iphonesimulator11.0  RUN_TESTS="YES" POD_LINT="NO"
+    - DESTINATION="OS=9.0,name=iPhone 6 Plus"      SCHEME="CoreStore iOS"     SDK=iphonesimulator11.0  RUN_TESTS="YES" POD_LINT="NO"
+    - DESTINATION="OS=8.4,name=iPhone 6"           SCHEME="CoreStore iOS"     SDK=iphonesimulator11.0  RUN_TESTS="YES" POD_LINT="NO"
+    - DESTINATION="OS=8.3,name=iPhone 5S"          SCHEME="CoreStore iOS"     SDK=iphonesimulator11.0  RUN_TESTS="YES" POD_LINT="NO"
+    - DESTINATION="OS=8.3,name=iPhone 5"           SCHEME="CoreStore iOS"     SDK=iphonesimulator11.0  RUN_TESTS="YES" POD_LINT="NO"
+    - DESTINATION="OS=8.3,name=iPhone 4S"          SCHEME="CoreStore iOS"     SDK=iphonesimulator11.0  RUN_TESTS="YES" POD_LINT="NO"
+    - DESTINATION="arch=x86_64"                    SCHEME="CoreStore OSX"     SDK=macosx10.13          RUN_TESTS="YES" POD_LINT="NO"
+    - DESTINATION="OS=4.0,name=Apple Watch - 42mm" SCHEME="CoreStore watchOS" SDK=watchsimulator4.0    RUN_TESTS="NO"  POD_LINT="NO"
+    - DESTINATION="OS=3.2,name=Apple Watch - 42mm" SCHEME="CoreStore watchOS" SDK=watchsimulator4.0    RUN_TESTS="NO"  POD_LINT="NO"
+    - DESTINATION="OS=2.2,name=Apple Watch - 42mm" SCHEME="CoreStore watchOS" SDK=watchsimulator4.0    RUN_TESTS="NO"  POD_LINT="NO"
+    - DESTINATION="OS=11.0,name=Apple TV 1080p"    SCHEME="CoreStore tvOS"    SDK=appletvsimulator11.0 RUN_TESTS="YES" POD_LINT="NO"
+    - DESTINATION="OS=10.2,name=Apple TV 1080p"    SCHEME="CoreStore tvOS"    SDK=appletvsimulator11.0 RUN_TESTS="YES" POD_LINT="NO"
+    - DESTINATION="OS=9.2,name=Apple TV 1080p"     SCHEME="CoreStore tvOS"    SDK=appletvsimulator11.0 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
-  - curl -OlL "https://github.com/Carthage/Carthage/releases/download/0.23.0/Carthage.pkg"
+  - curl -OlL "https://github.com/Carthage/Carthage/releases/download/0.26.0/Carthage.pkg"
  - sudo installer -pkg "Carthage.pkg" -target /
  - rm "Carthage.pkg"
+  - npm install ios-sim -g
+  - ios-sim start --devicetypeid "com.apple.CoreSimulator.SimDeviceType.iPhone-8, 11.0"
 before_script:
  - carthage update --use-submodules
 script:
@@ -38,8 +43,8 @@ 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 "iphonesimulator10.3" -destination "OS=10.3,name=iPhone 7" -configuration Debug ONLY_ACTIVE_ARCH=NO clean test | xcpretty -c;
-  - xcodebuild -workspace "CoreStore.xcworkspace" -scheme "CoreStore iOS" -sdk "iphonesimulator10.3" -destination "OS=10.3,name=iPhone 7" -configuration Release ONLY_ACTIVE_ARCH=NO clean test | xcpretty -c;
+  - xcodebuild -workspace "CoreStore.xcworkspace" -scheme "CoreStoreDemo" -sdk "iphonesimulator11.0" -destination "OS=11.0,name=iPhone 8" -configuration Debug ONLY_ACTIVE_ARCH=NO build | xcpretty -c;
+  - xcodebuild -workspace "CoreStore.xcworkspace" -scheme "CoreStoreDemo" -sdk "iphonesimulator11.0" -destination "OS=11.0,name=iPhone 8" -configuration Release ONLY_ACTIVE_ARCH=NO build | xcpretty -c;
  - if [ $POD_LINT == "YES" ]; then
      pod lib lint --quick;
    fi
--- a/CoreStore.podspec
+++ b/CoreStore.podspec
@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
    s.name = "CoreStore"
-    s.version = "4.0.1"
+    s.version = "5.0.0"
    s.license = "MIT"
    s.summary = "Unleashing the real power of Core Data with the elegance and safety of Swift"
    s.homepage = "https://github.com/JohnEstropia/CoreStore"
--- a/CoreStore.xcodeproj/project.pbxproj
+++ b/CoreStore.xcodeproj/project.pbxproj
@@ -34,7 +34,7 @@
 		82BA18B51C4BBD3F00A0916E /* BaseDataTransaction+Querying.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5E84EFE1AFF847B0064E85B /* BaseDataTransaction+Querying.swift */; };
 		82BA18B61C4BBD3F00A0916E /* DataStack+Querying.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5E84F061AFF847B0064E85B /* DataStack+Querying.swift */; };
 		82BA18B71C4BBD3F00A0916E /* CoreStore+Querying.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5E84F071AFF847B0064E85B /* CoreStore+Querying.swift */; };
-		82BA18B81C4BBD4200A0916E /* ClauseTypes.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5E84F401AFF8CCD0064E85B /* ClauseTypes.swift */; };
+		82BA18B81C4BBD4200A0916E /* TypeErasedClauses.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5E84F401AFF8CCD0064E85B /* TypeErasedClauses.swift */; };
 		82BA18B91C4BBD4A00A0916E /* From.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5E84F011AFF847B0064E85B /* From.swift */; };
 		82BA18BA1C4BBD4A00A0916E /* Select.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5E84F031AFF847B0064E85B /* Select.swift */; };
 		82BA18BB1C4BBD4A00A0916E /* Where.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5E84F051AFF847B0064E85B /* Where.swift */; };
@@ -101,6 +101,18 @@
 		B51FE5AF1CD4D00300E54258 /* CoreStore+CustomDebugStringConvertible.swift in Sources */ = {isa = PBXBuildFile; fileRef = B51FE5AA1CD4D00300E54258 /* CoreStore+CustomDebugStringConvertible.swift */; };
 		B5202CFA1C04688100DED140 /* NSFetchedResultsController+Convenience.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5202CF91C04688100DED140 /* NSFetchedResultsController+Convenience.swift */; };
 		B5202CFD1C046E8400DED140 /* NSFetchedResultsController+Convenience.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5202CF91C04688100DED140 /* NSFetchedResultsController+Convenience.swift */; };
+		B5215CA41FA47DFD00139E3A /* FetchChainBuilder.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5215CA31FA47DFD00139E3A /* FetchChainBuilder.swift */; };
+		B5215CA51FA47DFD00139E3A /* FetchChainBuilder.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5215CA31FA47DFD00139E3A /* FetchChainBuilder.swift */; };
+		B5215CA61FA47DFD00139E3A /* FetchChainBuilder.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5215CA31FA47DFD00139E3A /* FetchChainBuilder.swift */; };
+		B5215CA71FA47DFD00139E3A /* FetchChainBuilder.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5215CA31FA47DFD00139E3A /* FetchChainBuilder.swift */; };
+		B5215CA91FA4810300139E3A /* QueryChainBuilder.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5215CA81FA4810300139E3A /* QueryChainBuilder.swift */; };
+		B5215CAA1FA4810300139E3A /* QueryChainBuilder.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5215CA81FA4810300139E3A /* QueryChainBuilder.swift */; };
+		B5215CAB1FA4810300139E3A /* QueryChainBuilder.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5215CA81FA4810300139E3A /* QueryChainBuilder.swift */; };
+		B5215CAC1FA4810300139E3A /* QueryChainBuilder.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5215CA81FA4810300139E3A /* QueryChainBuilder.swift */; };
+		B5215CAE1FA4812500139E3A /* SectionMonitorBuilder.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5215CAD1FA4812500139E3A /* SectionMonitorBuilder.swift */; };
+		B5215CAF1FA4812500139E3A /* SectionMonitorBuilder.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5215CAD1FA4812500139E3A /* SectionMonitorBuilder.swift */; };
+		B5215CB01FA4812500139E3A /* SectionMonitorBuilder.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5215CAD1FA4812500139E3A /* SectionMonitorBuilder.swift */; };
+		B5215CB11FA4812500139E3A /* SectionMonitorBuilder.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5215CAD1FA4812500139E3A /* SectionMonitorBuilder.swift */; };
 		B5220E081D0C5F8D009BC71E /* ObjectObserverTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5220E071D0C5F8D009BC71E /* ObjectObserverTests.swift */; };
 		B5220E091D0C5F8D009BC71E /* ObjectObserverTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5220E071D0C5F8D009BC71E /* ObjectObserverTests.swift */; };
 		B5220E0C1D0D0D19009BC71E /* ImportTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5220E0B1D0D0D19009BC71E /* ImportTests.swift */; };
@@ -184,7 +196,7 @@
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 		B52DD1A81BE1F93200949AFE /* DataStack+Querying.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5E84F061AFF847B0064E85B /* DataStack+Querying.swift */; };
 		B52DD1A91BE1F93200949AFE /* CoreStore+Querying.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5E84F071AFF847B0064E85B /* CoreStore+Querying.swift */; };
-		B52DD1AA1BE1F93500949AFE /* ClauseTypes.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5E84F401AFF8CCD0064E85B /* ClauseTypes.swift */; };
+		B52DD1AA1BE1F93500949AFE /* TypeErasedClauses.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5E84F401AFF8CCD0064E85B /* TypeErasedClauses.swift */; };
 		B52DD1AB1BE1F93900949AFE /* From.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5E84F011AFF847B0064E85B /* From.swift */; };
 		B52DD1AC1BE1F93900949AFE /* Select.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5E84F031AFF847B0064E85B /* Select.swift */; };
 		B52DD1AD1BE1F93900949AFE /* Where.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5E84F051AFF847B0064E85B /* Where.swift */; };
@@ -238,6 +250,14 @@
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 		B538BA7A1D15B3E30003A766 /* CoreStoreBridge.m in Sources */ = {isa = PBXBuildFile; fileRef = B538BA701D15B3E30003A766 /* CoreStoreBridge.m */; };
+		B53B275F1EE3B92E00E9B352 /* CoreStoreManagedObject.swift in Sources */ = {isa = PBXBuildFile; fileRef = B53B275E1EE3B92E00E9B352 /* CoreStoreManagedObject.swift */; };
+		B53B27601EE3B92E00E9B352 /* CoreStoreManagedObject.swift in Sources */ = {isa = PBXBuildFile; fileRef = B53B275E1EE3B92E00E9B352 /* CoreStoreManagedObject.swift */; };
+		B53B27611EE3B92E00E9B352 /* CoreStoreManagedObject.swift in Sources */ = {isa = PBXBuildFile; fileRef = B53B275E1EE3B92E00E9B352 /* CoreStoreManagedObject.swift */; };
+		B53B27621EE3B92E00E9B352 /* CoreStoreManagedObject.swift in Sources */ = {isa = PBXBuildFile; fileRef = B53B275E1EE3B92E00E9B352 /* CoreStoreManagedObject.swift */; };
+		B53CA9A21EF1EF1600E0F440 /* PartialObject.swift in Sources */ = {isa = PBXBuildFile; fileRef = B53CA9A11EF1EF1600E0F440 /* PartialObject.swift */; };
+		B53CA9A31EF1EF1600E0F440 /* PartialObject.swift in Sources */ = {isa = PBXBuildFile; fileRef = B53CA9A11EF1EF1600E0F440 /* PartialObject.swift */; };
+		B53CA9A41EF1EF1600E0F440 /* PartialObject.swift in Sources */ = {isa = PBXBuildFile; fileRef = B53CA9A11EF1EF1600E0F440 /* PartialObject.swift */; };
+		B53CA9A51EF1EF1600E0F440 /* PartialObject.swift in Sources */ = {isa = PBXBuildFile; fileRef = B53CA9A11EF1EF1600E0F440 /* PartialObject.swift */; };
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@@ -316,6 +336,10 @@
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+		B55514EA1EED8BF900BAB888 /* From+Querying.swift in Sources */ = {isa = PBXBuildFile; fileRef = B55514E91EED8BF900BAB888 /* From+Querying.swift */; };
+		B55514EB1EED8BF900BAB888 /* From+Querying.swift in Sources */ = {isa = PBXBuildFile; fileRef = B55514E91EED8BF900BAB888 /* From+Querying.swift */; };
+		B55514EC1EED8BF900BAB888 /* From+Querying.swift in Sources */ = {isa = PBXBuildFile; fileRef = B55514E91EED8BF900BAB888 /* From+Querying.swift */; };
+		B55514ED1EED8BF900BAB888 /* From+Querying.swift in Sources */ = {isa = PBXBuildFile; fileRef = B55514E91EED8BF900BAB888 /* From+Querying.swift */; };
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@@ -354,7 +378,7 @@
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-		B56321951BD65216006C9394 /* ClauseTypes.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5E84F401AFF8CCD0064E85B /* ClauseTypes.swift */; };
+		B56321951BD65216006C9394 /* TypeErasedClauses.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5E84F401AFF8CCD0064E85B /* TypeErasedClauses.swift */; };
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+		B5CA2B071F7E5ACA004B1936 /* WhereClauseType.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = WhereClauseType.swift; sourceTree = "<group>"; };
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-		B5E84F401AFF8CCD0064E85B /* ClauseTypes.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = ClauseTypes.swift; sourceTree = "<group>"; };
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@@ -1102,6 +1164,17 @@
 			name = Observing;
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+			isa = PBXGroup;
+			children = (
+				B55514E91EED8BF900BAB888 /* From+Querying.swift */,
+				B5215CA31FA47DFD00139E3A /* FetchChainBuilder.swift */,
+				B5215CA81FA4810300139E3A /* QueryChainBuilder.swift */,
+				B5215CAD1FA4812500139E3A /* SectionMonitorBuilder.swift */,
+			);
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+			sourceTree = "<group>";
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@@ -1224,17 +1297,37 @@
 			isa = PBXGroup;
 			children = (
 				B5D339D71E9489AB00C880DE /* CoreStoreObject.swift */,
+				B53CA9A11EF1EF1600E0F440 /* PartialObject.swift */,
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 				B52F74391E9B8724005F3DAC /* Dynamic Schema */,
 				B5D339DC1E9489C700C880DE /* DynamicObject.swift */,
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-				B5D339E11E948C3600C880DE /* Value.swift */,
 				B5A991EB1E9DC2CE0091A2E3 /* VersionLock.swift */,
 			);
 			name = "Dynamic Models";
 			sourceTree = "<group>";
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+		B5831B6E1F3355C300A9F647 /* Properties */ = {
+			isa = PBXGroup;
+			children = (
+				B5D33A001E96012400C880DE /* Relationship.swift */,
+				B5D339E11E948C3600C880DE /* Value.swift */,
+				B5831B791F34ACBA00A9F647 /* Transformable.swift */,
+			);
+			name = Properties;
+			sourceTree = "<group>";
+		};
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+				B5D339EB1E9495E500C880DE /* CoreStoreObject+Querying.swift */,
+				B5CA2B111F81DBFE004B1936 /* DynamicKeyPath.swift */,
+			);
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+			sourceTree = "<group>";
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@@ -1358,13 +1451,14 @@
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 				B596BBBA1DD5C39F001DCDD9 /* QueryableSource.swift */,
 				B549F65D1E569C7400FBAB2D /* QueryableAttributeType.swift */,
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@@ -1387,7 +1481,8 @@
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 			children = (
-				B5E84F401AFF8CCD0064E85B /* ClauseTypes.swift */,
+				B5E84F401AFF8CCD0064E85B /* TypeErasedClauses.swift */,
+				B5CA2B071F7E5ACA004B1936 /* WhereClauseType.swift */,
 			);
 			name = "Protocol Clauses";
 			sourceTree = "<group>";
@@ -1423,18 +1518,21 @@
 		B5E84F291AFF849C0064E85B /* Internal */ = {
 			isa = PBXGroup;
 			children = (
+				B5831B6F1F34AC3400A9F647 /* AttributeProtocol.swift */,
+				B5831B741F34AC7A00A9F647 /* RelationshipProtocol.swift */,
 				B5C976E61C6E3A5900B1AF90 /* CoreStoreFetchedResultsController.swift */,
 				B526613F1CADD585007B85D9 /* CoreStoreFetchRequest+CoreStore.swift */,
-				B51260881E9B252B00402229 /* NSEntityDescription+DynamicModel.swift */,
-				B56923C31EB823B4007C4DC9 /* NSEntityDescription+Migration.swift */,
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+				B533C4DA1D7D4BFA001383CB /* DispatchQueue+CoreStore.swift */,
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 				LastSwiftUpdateCheck = 0730;
-				LastUpgradeCheck = 0800;
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 						CreatedOnToolsVersion = 6.0;
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 				B5E84F301AFF849C0064E85B /* NSManagedObjectContext+CoreStore.swift in Sources */,
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 				B559CD431CAA8B6300E4D58B /* CSSetupResult.swift in Sources */,
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 				B52F743D1E9B8724005F3DAC /* DynamicSchema.swift in Sources */,
 				B56923FF1EB82976007C4DC9 /* CSUnsafeDataModelSchema.swift in Sources */,
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 				B53FBA041CAB300C00F0D40A /* CSMigrationType.swift in Sources */,
 				B5E84EF41AFF846E0064E85B /* AsynchronousDataTransaction.swift in Sources */,
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 				B598514B1C90289F00C99590 /* NSPersistentStoreCoordinator+Setup.swift in Sources */,
 				B5D339EA1E9493A500C880DE /* Entity.swift in Sources */,
-				B52DD1AA1BE1F93500949AFE /* ClauseTypes.swift in Sources */,
+				B52DD1AA1BE1F93500949AFE /* TypeErasedClauses.swift in Sources */,
 				B53FBA021CAB2D2F00F0D40A /* CSMigrationResult.swift in Sources */,
 				B51FE5AF1CD4D00300E54258 /* CoreStore+CustomDebugStringConvertible.swift in Sources */,
 			);
@@ -2323,6 +2457,7 @@
 			files = (
 				B56321A91BD65219006C9394 /* Progress+Convenience.swift in Sources */,
 				B5ECDBFC1CA804FD00C7F112 /* NSManagedObjectContext+ObjectiveC.swift in Sources */,
+				B5CA2B0A1F7E5ACA004B1936 /* WhereClauseType.swift in Sources */,
 				B5C976E91C6E3A5E00B1AF90 /* CoreStoreFetchedResultsController.swift in Sources */,
 				B56923F71EB828BF007C4DC9 /* CSDynamicSchema.swift in Sources */,
 				B56321801BD65216006C9394 /* CoreStoreError.swift in Sources */,
@@ -2334,6 +2469,7 @@
 				B5D339DA1E9489AB00C880DE /* CoreStoreObject.swift in Sources */,
 				B5ECDC021CA80CBA00C7F112 /* CSWhere.swift in Sources */,
 				B56923FC1EB82956007C4DC9 /* CSXcodeDataModelSchema.swift in Sources */,
+				B55514EC1EED8BF900BAB888 /* From+Querying.swift in Sources */,
 				B596BBBD1DD5C39F001DCDD9 /* QueryableSource.swift in Sources */,
 				B5ECDC081CA8138100C7F112 /* CSOrderBy.swift in Sources */,
 				B5E1B59B1CAA0C23007FD580 /* CSObjectObserver.swift in Sources */,
@@ -2354,6 +2490,7 @@
 				B5C976E51C6C9F9B00B1AF90 /* UnsafeDataTransaction+Observing.swift in Sources */,
 				B53FBA151CAB63CB00F0D40A /* Progress+ObjectiveC.swift in Sources */,
 				B5E1B5AB1CAA49E2007FD580 /* CSDataStack+Migrating.swift in Sources */,
+				B5831B771F34AC7A00A9F647 /* RelationshipProtocol.swift in Sources */,
 				B5D3F6471C887C0A00C7492A /* LegacySQLiteStore.swift in Sources */,
 				B5D339F31E94AF5800C880DE /* CoreStoreStrings.swift in Sources */,
 				B5E1B5A01CAA2568007FD580 /* CSDataStack+Observing.swift in Sources */,
@@ -2372,6 +2509,7 @@
 				B56321A81BD65219006C9394 /* NSManagedObject+Convenience.swift in Sources */,
 				B546F9751C9C553300D5AC55 /* SetupResult.swift in Sources */,
 				B56321981BD65216006C9394 /* Where.swift in Sources */,
+				B53CA9A41EF1EF1600E0F440 /* PartialObject.swift in Sources */,
 				B5202CFD1C046E8400DED140 /* NSFetchedResultsController+Convenience.swift in Sources */,
 				B5FE4DA91C84FB4400FA6A91 /* InMemoryStore.swift in Sources */,
 				B51260951E9B28F100402229 /* EntityIdentifier.swift in Sources */,
@@ -2392,6 +2530,7 @@
 				B501FDE51CA8D1F500BE22EF /* CSListMonitor.swift in Sources */,
 				B5E41EC21EA9BB37006240F0 /* DynamicSchema+Convenience.swift in Sources */,
 				B5ECDC141CA816E500C7F112 /* CSTweak.swift in Sources */,
+				B5A1DACA1F111BFA003CF369 /* KeyPath+Querying.swift in Sources */,
 				B56321AE1BD6521C006C9394 /* NotificationObserver.swift in Sources */,
 				B56321931BD65216006C9394 /* DataStack+Querying.swift in Sources */,
 				B56923C61EB823B4007C4DC9 /* NSEntityDescription+Migration.swift in Sources */,
@@ -2420,6 +2559,7 @@
 				B563218E1BD65216006C9394 /* SaveResult.swift in Sources */,
 				B5E222261CA4E12600BA2E95 /* CSSynchronousDataTransaction.swift in Sources */,
 				B56321A21BD65216006C9394 /* ListObserver.swift in Sources */,
+				B5215CAB1FA4810300139E3A /* QueryChainBuilder.swift in Sources */,
 				B563218A1BD65216006C9394 /* SynchronousDataTransaction.swift in Sources */,
 				B52F744C1E9B8740005F3DAC /* CoreStoreSchema.swift in Sources */,
 				B5AEFAB71C9962AE00AD137F /* CoreStoreBridge.swift in Sources */,
@@ -2427,6 +2567,8 @@
 				B563219F1BD65216006C9394 /* ObjectMonitor.swift in Sources */,
 				B56321B61BD6521C006C9394 /* WeakObject.swift in Sources */,
 				B56923EA1EB827F5007C4DC9 /* InferredSchemaMappingProvider.swift in Sources */,
+				B53B27611EE3B92E00E9B352 /* CoreStoreManagedObject.swift in Sources */,
+				B5215CA61FA47DFD00139E3A /* FetchChainBuilder.swift in Sources */,
 				B5D33A031E96012400C880DE /* Relationship.swift in Sources */,
 				B559CD4C1CAA8C6D00E4D58B /* CSStorageInterface.swift in Sources */,
 				B56923CB1EB82410007C4DC9 /* NSManagedObjectModel+Migration.swift in Sources */,
@@ -2444,27 +2586,31 @@
 				B56321B11BD6521C006C9394 /* NSManagedObjectContext+CoreStore.swift in Sources */,
 				B563218D1BD65216006C9394 /* CoreStore+Transaction.swift in Sources */,
 				B546F96B1C9AF26D00D5AC55 /* CSInMemoryStore.swift in Sources */,
+				B5831B7C1F34ACBA00A9F647 /* Transformable.swift in Sources */,
 				B53FBA211CAB63FA00F0D40A /* NSFetchedResultsController+ObjectiveC.swift in Sources */,
 				B563218B1BD65216006C9394 /* UnsafeDataTransaction.swift in Sources */,
 				B549F6601E569C7400FBAB2D /* QueryableAttributeType.swift in Sources */,
 				B559CD461CAA8B6300E4D58B /* CSSetupResult.swift in Sources */,
 				B56321A61BD65216006C9394 /* MigrationType.swift in Sources */,
+				B5CA2B141F81DBFE004B1936 /* DynamicKeyPath.swift in Sources */,
 				B5A991EE1E9DC2CE0091A2E3 /* VersionLock.swift in Sources */,
 				B5ECDBEF1CA6BF2000C7F112 /* CSFrom.swift in Sources */,
 				B52F743F1E9B8724005F3DAC /* DynamicSchema.swift in Sources */,
 				B56924011EB82976007C4DC9 /* CSUnsafeDataModelSchema.swift in Sources */,
+				B5215CB01FA4812500139E3A /* SectionMonitorBuilder.swift in Sources */,
 				B56321B41BD6521C006C9394 /* NSManagedObjectContext+Transaction.swift in Sources */,
 				B56923EE1EB827F6007C4DC9 /* SchemaMappingProvider.swift in Sources */,
 				B56321861BD65216006C9394 /* CoreStoreLogger.swift in Sources */,
 				B53FBA071CAB300C00F0D40A /* CSMigrationType.swift in Sources */,
 				B56321841BD65216006C9394 /* DefaultLogger.swift in Sources */,
 				B5DBE2CF1C9914A900B5CEFA /* CSCoreStore.swift in Sources */,
+				B5831B721F34AC3400A9F647 /* AttributeProtocol.swift in Sources */,
 				B546F95F1C9A12B800D5AC55 /* CSSQliteStore.swift in Sources */,
 				B5ECDC0E1CA8161B00C7F112 /* CSGroupBy.swift in Sources */,
 				B5D339E91E9493A500C880DE /* Entity.swift in Sources */,
 				B56321A41BD65216006C9394 /* CoreStore+Migration.swift in Sources */,
 				B56321A01BD65216006C9394 /* ObjectObserver.swift in Sources */,
-				B56321951BD65216006C9394 /* ClauseTypes.swift in Sources */,
+				B56321951BD65216006C9394 /* TypeErasedClauses.swift in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -2498,7 +2644,9 @@
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
 				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_DOCUMENTATION_COMMENTS = YES;
@@ -2506,7 +2654,11 @@
 				CLANG_WARN_ENUM_CONVERSION = YES;
 				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
@@ -2540,6 +2692,8 @@
 				PRODUCT_NAME = CoreStore;
 				SDKROOT = iphoneos;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+				SWIFT_SWIFT3_OBJC_INFERENCE = Off;
+				SWIFT_VERSION = 4.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				TVOS_DEPLOYMENT_TARGET = 9.0;
 				VERSIONING_SYSTEM = "apple-generic";
@@ -2557,7 +2711,9 @@
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
 				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_DOCUMENTATION_COMMENTS = YES;
@@ -2565,7 +2721,11 @@
 				CLANG_WARN_ENUM_CONVERSION = YES;
 				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
@@ -2592,6 +2752,8 @@
 				PRODUCT_NAME = CoreStore;
 				SDKROOT = iphoneos;
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
+				SWIFT_SWIFT3_OBJC_INFERENCE = Off;
+				SWIFT_VERSION = 4.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				TVOS_DEPLOYMENT_TARGET = 9.0;
 				VALIDATE_PRODUCT = YES;
@@ -2615,7 +2777,8 @@
 				SDKROOT = iphoneos;
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 3.0;
+				SWIFT_SWIFT3_OBJC_INFERENCE = Off;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Debug;
 		};
@@ -2633,7 +2796,8 @@
 				SDKROOT = iphoneos;
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-O";
-				SWIFT_VERSION = 3.0;
+				SWIFT_SWIFT3_OBJC_INFERENCE = Off;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Release;
 		};
@@ -2653,7 +2817,8 @@
 				SDKROOT = iphoneos;
 				SWIFT_OBJC_BRIDGING_HEADER = "CoreStoreTests/CoreStoreTests-Bridging-Header.h";
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 3.0;
+				SWIFT_SWIFT3_OBJC_INFERENCE = Off;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Debug;
 		};
@@ -2668,7 +2833,8 @@
 				PRODUCT_NAME = CoreStoreTests;
 				SDKROOT = iphoneos;
 				SWIFT_OBJC_BRIDGING_HEADER = "CoreStoreTests/CoreStoreTests-Bridging-Header.h";
-				SWIFT_VERSION = 3.0;
+				SWIFT_SWIFT3_OBJC_INFERENCE = Off;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Release;
 		};
@@ -2688,7 +2854,8 @@
 				SDKROOT = appletvos;
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 3.0;
+				SWIFT_SWIFT3_OBJC_INFERENCE = Off;
+				SWIFT_VERSION = 4.0;
 				TARGETED_DEVICE_FAMILY = 3;
 			};
 			name = Debug;
@@ -2709,7 +2876,8 @@
 				SDKROOT = appletvos;
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-O";
-				SWIFT_VERSION = 3.0;
+				SWIFT_SWIFT3_OBJC_INFERENCE = Off;
+				SWIFT_VERSION = 4.0;
 				TARGETED_DEVICE_FAMILY = 3;
 			};
 			name = Release;
@@ -2727,7 +2895,8 @@
 				SDKROOT = appletvos;
 				SWIFT_OBJC_BRIDGING_HEADER = "CoreStoreTests/CoreStoreTests-Bridging-Header.h";
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 3.0;
+				SWIFT_SWIFT3_OBJC_INFERENCE = Off;
+				SWIFT_VERSION = 4.0;
 				TARGETED_DEVICE_FAMILY = 3;
 			};
 			name = Debug;
@@ -2745,7 +2914,8 @@
 				PRODUCT_NAME = CoreStoreTests;
 				SDKROOT = appletvos;
 				SWIFT_OBJC_BRIDGING_HEADER = "CoreStoreTests/CoreStoreTests-Bridging-Header.h";
-				SWIFT_VERSION = 3.0;
+				SWIFT_SWIFT3_OBJC_INFERENCE = Off;
+				SWIFT_VERSION = 4.0;
 				TARGETED_DEVICE_FAMILY = 3;
 			};
 			name = Release;
@@ -2769,7 +2939,8 @@
 				SDKROOT = macosx;
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 3.0;
+				SWIFT_SWIFT3_OBJC_INFERENCE = Off;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Debug;
 		};
@@ -2793,7 +2964,8 @@
 				SDKROOT = macosx;
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-O";
-				SWIFT_VERSION = 3.0;
+				SWIFT_SWIFT3_OBJC_INFERENCE = Off;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Release;
 		};
@@ -2813,7 +2985,8 @@
 				SDKROOT = macosx;
 				SWIFT_OBJC_BRIDGING_HEADER = "CoreStoreTests/CoreStoreTests-Bridging-Header.h";
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 3.0;
+				SWIFT_SWIFT3_OBJC_INFERENCE = Off;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Debug;
 		};
@@ -2833,7 +3006,8 @@
 				PRODUCT_NAME = CoreStoreTests;
 				SDKROOT = macosx;
 				SWIFT_OBJC_BRIDGING_HEADER = "CoreStoreTests/CoreStoreTests-Bridging-Header.h";
-				SWIFT_VERSION = 3.0;
+				SWIFT_SWIFT3_OBJC_INFERENCE = Off;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Release;
 		};
@@ -2854,7 +3028,8 @@
 				SDKROOT = watchos;
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 3.0;
+				SWIFT_SWIFT3_OBJC_INFERENCE = Off;
+				SWIFT_VERSION = 4.0;
 				TARGETED_DEVICE_FAMILY = 4;
 			};
 			name = Debug;
@@ -2877,7 +3052,8 @@
 				SDKROOT = watchos;
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-O";
-				SWIFT_VERSION = 3.0;
+				SWIFT_SWIFT3_OBJC_INFERENCE = Off;
+				SWIFT_VERSION = 4.0;
 				TARGETED_DEVICE_FAMILY = 4;
 			};
 			name = Release;
--- 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 = "0800"
+   LastUpgradeVersion = "0900"
   version = "1.3">
   <BuildAction
      parallelizeBuildables = "YES"
@@ -26,6 +26,7 @@
      buildConfiguration = "Debug"
      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      language = ""
      shouldUseLaunchSchemeArgsEnv = "YES">
      <Testables>
         <TestableReference
@@ -55,6 +56,7 @@
      buildConfiguration = "Debug"
      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      language = ""
      launchStyle = "0"
      useCustomWorkingDirectory = "NO"
      ignoresPersistentStateOnLaunch = "NO"
--- 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 = "0800"
+   LastUpgradeVersion = "0900"
   version = "1.3">
   <BuildAction
      parallelizeBuildables = "YES"
@@ -40,6 +40,7 @@
      buildConfiguration = "Debug"
      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      language = ""
      shouldUseLaunchSchemeArgsEnv = "YES">
      <Testables>
         <TestableReference
@@ -74,6 +75,7 @@
      buildConfiguration = "Debug"
      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      language = ""
      launchStyle = "0"
      useCustomWorkingDirectory = "NO"
      ignoresPersistentStateOnLaunch = "NO"
--- 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 = "0800"
+   LastUpgradeVersion = "0900"
   version = "1.3">
   <BuildAction
      parallelizeBuildables = "YES"
@@ -26,6 +26,7 @@
      buildConfiguration = "Debug"
      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      language = ""
      shouldUseLaunchSchemeArgsEnv = "YES">
      <Testables>
         <TestableReference
@@ -55,6 +56,7 @@
      buildConfiguration = "Debug"
      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      language = ""
      launchStyle = "0"
      useCustomWorkingDirectory = "NO"
      ignoresPersistentStateOnLaunch = "NO"
--- 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 = "0800"
+   LastUpgradeVersion = "0900"
   version = "1.3">
   <BuildAction
      parallelizeBuildables = "YES"
@@ -26,6 +26,7 @@
      buildConfiguration = "Debug"
      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      language = ""
      shouldUseLaunchSchemeArgsEnv = "YES">
      <Testables>
      </Testables>
@@ -36,6 +37,7 @@
      buildConfiguration = "Debug"
      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      language = ""
      launchStyle = "0"
      useCustomWorkingDirectory = "NO"
      ignoresPersistentStateOnLaunch = "NO"
--- a/CoreStoreDemo/CoreStoreDemo.xcodeproj/project.pbxproj
+++ b/CoreStoreDemo/CoreStoreDemo.xcodeproj/project.pbxproj
@@ -265,12 +265,12 @@
 			isa = PBXProject;
 			attributes = {
 				LastSwiftUpdateCheck = 0700;
-				LastUpgradeCheck = 0800;
+				LastUpgradeCheck = 0900;
 				ORGANIZATIONNAME = "John Rommel Estropia";
 				TargetAttributes = {
 					B54AAD481AF4D26E00848AE0 = {
 						CreatedOnToolsVersion = 6.3;
-						LastSwiftMigration = 0800;
+						LastSwiftMigration = 0900;
 					};
 				};
 			};
@@ -371,14 +371,20 @@
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
 				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
 				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_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
@@ -407,6 +413,8 @@
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = iphoneos;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+				SWIFT_SWIFT3_OBJC_INFERENCE = Off;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Debug;
 		};
@@ -418,14 +426,20 @@
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
 				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
 				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_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
@@ -445,6 +459,8 @@
 				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
+				SWIFT_SWIFT3_OBJC_INFERENCE = Off;
+				SWIFT_VERSION = 4.0;
 				VALIDATE_PRODUCT = YES;
 			};
 			name = Release;
@@ -458,7 +474,8 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.johnestropia.corestore.demo;
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 3.0;
+				SWIFT_SWIFT3_OBJC_INFERENCE = Off;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Debug;
 		};
@@ -472,7 +489,8 @@
 				PRODUCT_BUNDLE_IDENTIFIER = com.johnestropia.corestore.demo;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
-				SWIFT_VERSION = 3.0;
+				SWIFT_SWIFT3_OBJC_INFERENCE = Off;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Release;
 		};
--- a/CoreStoreDemo/CoreStoreDemo.xcodeproj/xcshareddata/xcschemes/CoreStoreDemo.xcscheme
+++ b/CoreStoreDemo/CoreStoreDemo.xcodeproj/xcshareddata/xcschemes/CoreStoreDemo.xcscheme
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0800"
+   LastUpgradeVersion = "0900"
   version = "1.3">
   <BuildAction
      parallelizeBuildables = "YES"
@@ -26,6 +26,7 @@
      buildConfiguration = "Debug"
      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      language = ""
      shouldUseLaunchSchemeArgsEnv = "YES">
      <Testables>
      </Testables>
@@ -45,6 +46,7 @@
      buildConfiguration = "Debug"
      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      language = ""
      launchStyle = "0"
      useCustomWorkingDirectory = "NO"
      ignoresPersistentStateOnLaunch = "NO"
--- a/CoreStoreDemo/CoreStoreDemo/Base.lproj/Main.storyboard
+++ b/CoreStoreDemo/CoreStoreDemo/Base.lproj/Main.storyboard
@@ -1,11 +1,11 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="12113" systemVersion="16C67" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" colorMatched="YES" initialViewController="Ni8-QF-XHB">
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="12121" systemVersion="16G29" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" colorMatched="YES" initialViewController="Ni8-QF-XHB">
    <device id="retina4_7" orientation="portrait">
        <adaptation id="fullscreen"/>
    </device>
    <dependencies>
        <deployment identifier="iOS"/>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="12078"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="12089"/>
        <capability name="Aspect ratio constraints" minToolsVersion="5.1"/>
        <capability name="Constraints to layout margins" minToolsVersion="6.0"/>
        <capability name="Constraints with non-1.0 multipliers" minToolsVersion="5.1"/>
@@ -459,8 +459,8 @@
                        <rect key="frame" x="0.0" y="0.0" width="375" height="301.5"/>
                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
                        <subviews>
-                            <view contentMode="scaleToFill" verticalCompressionResistancePriority="250" misplaced="YES" translatesAutoresizingMaskIntoConstraints="NO" id="NhC-oM-bkd">
-                                <rect key="frame" x="20" y="69.5" width="552" height="36.5"/>
+                            <view contentMode="scaleToFill" verticalCompressionResistancePriority="250" translatesAutoresizingMaskIntoConstraints="NO" id="NhC-oM-bkd">
+                                <rect key="frame" x="16" y="89.5" width="343" height="50"/>
                                <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
                                <constraints>
                                    <constraint firstAttribute="height" relation="greaterThanOrEqual" id="TIX-qi-B34"/>
@@ -511,8 +511,8 @@
                                    <action selector="brightnessSliderValueDidChange:" destination="dX3-kR-CYC" eventType="valueChanged" id="F09-EP-2iD"/>
                                </connections>
                            </slider>
-                            <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" misplaced="YES" text="Label" textAlignment="center" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="p4O-tf-dgt">
-                                <rect key="frame" x="20" y="49" width="552" height="20.5"/>
+                            <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Label" textAlignment="center" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="p4O-tf-dgt">
+                                <rect key="frame" x="16" y="69" width="343" height="20.5"/>
                                <fontDescription key="fontDescription" type="boldSystem" pointSize="17"/>
                                <color key="textColor" red="0.0" green="0.0" blue="0.0" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
                                <nil key="highlightedColor"/>
@@ -797,8 +797,8 @@
                        <rect key="frame" x="0.0" y="64" width="375" height="603"/>
                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
                        <subviews>
-                            <mapView clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="scaleToFill" ambiguous="YES" mapType="standard" translatesAutoresizingMaskIntoConstraints="NO" id="V2U-0R-Ts0">
-                                <rect key="frame" x="0.0" y="0.0" width="375" height="536"/>
+                            <mapView verifyAmbiguity="ignoreSizes" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="scaleToFill" ambiguous="YES" mapType="standard" translatesAutoresizingMaskIntoConstraints="NO" id="V2U-0R-Ts0">
+                                <rect key="frame" x="0.0" y="0.0" width="375" height="558"/>
                                <connections>
                                    <outlet property="delegate" destination="jPl-fH-NlD" id="Sjn-YC-haS"/>
                                </connections>
@@ -806,7 +806,7 @@
                        </subviews>
                        <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
                        <constraints>
-                            <constraint firstItem="RZg-hi-T8O" firstAttribute="top" secondItem="V2U-0R-Ts0" secondAttribute="bottom" id="GcS-Jz-Wcm"/>
+                            <constraint firstItem="RZg-hi-T8O" firstAttribute="top" secondItem="V2U-0R-Ts0" secondAttribute="bottom" id="N9r-9J-68d"/>
                            <constraint firstItem="V2U-0R-Ts0" firstAttribute="top" secondItem="k4s-iL-Krh" secondAttribute="top" id="S5Z-Da-V6J"/>
                            <constraint firstAttribute="trailing" secondItem="V2U-0R-Ts0" secondAttribute="trailing" id="YPc-RK-5ib"/>
                            <constraint firstItem="V2U-0R-Ts0" firstAttribute="leading" secondItem="k4s-iL-Krh" secondAttribute="leading" id="hk5-Rz-FyU"/>
@@ -820,7 +820,7 @@
                </viewController>
                <placeholder placeholderIdentifier="IBFirstResponder" id="YnG-TD-zxQ" userLabel="First Responder" sceneMemberID="firstResponder"/>
            </objects>
-            <point key="canvasLocation" x="3694" y="2020"/>
+            <point key="canvasLocation" x="3693.5" y="2019.5"/>
        </scene>
        <!--Logger-->
        <scene sceneID="n7W-0g-bbY">
@@ -927,7 +927,7 @@
                                    <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
                                    <subviews>
                                        <segmentedControl opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="left" contentVerticalAlignment="top" segmentControlStyle="bordered" selectedSegmentIndex="0" translatesAutoresizingMaskIntoConstraints="NO" id="YVj-dA-fyV">
-                                            <rect key="frame" x="20" y="26" width="560" height="29"/>
+                                            <rect key="frame" x="20" y="26" width="335" height="29"/>
                                            <segments>
                                                <segment title="Fetch"/>
                                                <segment title="Query"/>
--- a/CoreStoreDemo/CoreStoreDemo/CoreStoreDemo.xcdatamodeld/CoreStoreDemo.xcdatamodel/contents
+++ b/CoreStoreDemo/CoreStoreDemo/CoreStoreDemo.xcdatamodeld/CoreStoreDemo.xcdatamodel/contents
@@ -1,36 +1,25 @@
 <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
-<model userDefinedModelVersionIdentifier="" type="com.apple.IDECoreDataModeler.DataModel" documentVersion="1.0" lastSavedToolsVersion="10169.1" systemVersion="15D21" minimumToolsVersion="Automatic">
-    <entity name="Palette" representedClassName="CoreStoreDemo.Palette">
-        <attribute name="brightness" optional="YES" attributeType="Float" defaultValueString="0.0" syncable="YES"/>
-        <attribute name="colorName" optional="YES" transient="YES" attributeType="String" syncable="YES"/>
-        <attribute name="hue" optional="YES" attributeType="Integer 32" defaultValueString="0.0" syncable="YES"/>
-        <attribute name="saturation" optional="YES" attributeType="Float" defaultValueString="0.0" syncable="YES"/>
-        <userInfo/>
-    </entity>
+<model type="com.apple.IDECoreDataModeler.DataModel" documentVersion="1.0" lastSavedToolsVersion="12141" systemVersion="16F73" minimumToolsVersion="Xcode 7.3" sourceLanguage="Objective-C" userDefinedModelVersionIdentifier="">
    <entity name="Place" representedClassName="CoreStoreDemo.Place" syncable="YES">
-        <attribute name="latitude" optional="YES" attributeType="Double" defaultValueString="0.0" syncable="YES"/>
-        <attribute name="longitude" optional="YES" attributeType="Double" defaultValueString="0.0" syncable="YES"/>
+        <attribute name="latitude" optional="YES" attributeType="Double" defaultValueString="0.0" usesScalarValueType="NO" syncable="YES"/>
+        <attribute name="longitude" optional="YES" attributeType="Double" defaultValueString="0.0" usesScalarValueType="NO" syncable="YES"/>
        <attribute name="subtitle" optional="YES" attributeType="String" syncable="YES"/>
        <attribute name="title" optional="YES" attributeType="String" syncable="YES"/>
    </entity>
    <entity name="TimeZone" representedClassName="CoreStoreDemo.TimeZone" syncable="YES">
        <attribute name="abbreviation" optional="YES" attributeType="String" syncable="YES"/>
-        <attribute name="daylightSavingTimeOffset" optional="YES" attributeType="Double" defaultValueString="0.0" syncable="YES"/>
-        <attribute name="hasDaylightSavingTime" optional="YES" attributeType="Boolean" syncable="YES"/>
+        <attribute name="daylightSavingTimeOffset" optional="YES" attributeType="Double" defaultValueString="0.0" usesScalarValueType="NO" syncable="YES"/>
+        <attribute name="hasDaylightSavingTime" optional="YES" attributeType="Boolean" usesScalarValueType="NO" syncable="YES"/>
        <attribute name="name" optional="YES" attributeType="String" syncable="YES"/>
-        <attribute name="secondsFromGMT" optional="YES" attributeType="Integer 32" defaultValueString="0.0" syncable="YES"/>
+        <attribute name="secondsFromGMT" optional="YES" attributeType="Integer 32" defaultValueString="0.0" usesScalarValueType="NO" syncable="YES"/>
    </entity>
    <configuration name="FetchingAndQueryingDemo">
        <memberEntity name="TimeZone"/>
    </configuration>
-    <configuration name="ObservingDemo">
-        <memberEntity name="Palette"/>
-    </configuration>
    <configuration name="TransactionsDemo">
        <memberEntity name="Place"/>
    </configuration>
    <elements>
-        <element name="Palette" positionX="261" positionY="189" width="128" height="105"/>
        <element name="Place" positionX="261" positionY="225" width="128" height="105"/>
        <element name="TimeZone" positionX="297" positionY="270" width="128" height="120"/>
    </elements>
--- a/Demo/FetchingAndQueryingDemoViewController.swift
+++ b/Demo/FetchingAndQueryingDemoViewController.swift
@@ -165,8 +165,8 @@ class FetchingAndQueryingDemoViewController: UIViewController, UITableViewDataSo
            fetch: { () -> [TimeZone] in
                
                return Static.timeZonesStack.fetchAll(
-                    From<TimeZone>(),
-                    OrderBy(.ascending(#keyPath(TimeZone.name)))
+                    From<TimeZone>()
+                        .orderBy(.ascending(\.name))
                )!
            }
        ),
@@ -175,9 +175,13 @@ class FetchingAndQueryingDemoViewController: UIViewController, UITableViewDataSo
            fetch: { () -> [TimeZone] in
                
                return Static.timeZonesStack.fetchAll(
-                    From<TimeZone>(),
-                    Where("%K BEGINSWITH[c] %@", #keyPath(TimeZone.name), "Asia"),
-                    OrderBy(.ascending(#keyPath(TimeZone.secondsFromGMT)))
+                    From<TimeZone>()
+                        .where(
+                            format: "%K BEGINSWITH[c] %@",
+                            #keyPath(TimeZone.name),
+                            "Asia"
+                        )
+                        .orderBy(.ascending(\.secondsFromGMT))
                )!
            }
        ),
@@ -186,10 +190,15 @@ class FetchingAndQueryingDemoViewController: UIViewController, UITableViewDataSo
            fetch: { () -> [TimeZone] in
                
                return Static.timeZonesStack.fetchAll(
-                    From<TimeZone>(),
-                    Where("%K BEGINSWITH[c] %@", #keyPath(TimeZone.name), "America")
-                        || Where("%K BEGINSWITH[c] %@", #keyPath(TimeZone.name), "Europe"),
-                    OrderBy(.ascending(#keyPath(TimeZone.secondsFromGMT)))
+                    From<TimeZone>()
+                        .where(
+                            format: "%K BEGINSWITH[c] %@ OR %K BEGINSWITH[c] %@",
+                            #keyPath(TimeZone.name),
+                            "America",
+                            #keyPath(TimeZone.name),
+                            "Europe"
+                        )
+                        .orderBy(.ascending(\.secondsFromGMT))
                )!
            }
        ),
@@ -198,9 +207,13 @@ class FetchingAndQueryingDemoViewController: UIViewController, UITableViewDataSo
            fetch: { () -> [TimeZone] in
                
                return Static.timeZonesStack.fetchAll(
-                    From<TimeZone>(),
-                    !Where("%K BEGINSWITH[c] %@", #keyPath(TimeZone.name), "America"),
-                    OrderBy(.ascending(#keyPath(TimeZone.secondsFromGMT)))
+                    From<TimeZone>()
+                        .where(
+                            format: "%K BEGINSWITH[c] %@",
+                            #keyPath(TimeZone.name),
+                            "America"
+                        )
+                        .orderBy(.ascending(\.secondsFromGMT))
                    )!
            }
        ),
@@ -209,23 +222,23 @@ class FetchingAndQueryingDemoViewController: UIViewController, UITableViewDataSo
            fetch: { () -> [TimeZone] in
                
                return Static.timeZonesStack.fetchAll(
-                    From<TimeZone>(),
-                    Where("hasDaylightSavingTime", isEqualTo: true),
-                    OrderBy(.ascending(#keyPath(TimeZone.name)))
+                    From<TimeZone>()
+                        .where(\.hasDaylightSavingTime == true)
+                        .orderBy(.ascending(\.name))
                )!
            }
        )
    ]
    
-    private let queryingItems = [
+    private let queryingItems: [(title: String, query: () -> Any)] = [
        (
            title: "Number of Time Zones",
            query: { () -> Any in
                
                return Static.timeZonesStack.queryValue(
-                    From<TimeZone>(),
-                    Select<NSNumber>(.count(#keyPath(TimeZone.name)))
-                )!
+                    From<TimeZone>()
+                        .select(NSNumber.self, .count(\.name))
+                )! as Any
            }
        ),
        (
@@ -233,10 +246,10 @@ class FetchingAndQueryingDemoViewController: UIViewController, UITableViewDataSo
            query: { () -> Any in
                
                return Static.timeZonesStack.queryValue(
-                    From<TimeZone>(),
-                    Select<String>(#keyPath(TimeZone.abbreviation)),
-                    Where("%K ENDSWITH[c] %@", #keyPath(TimeZone.name), "Tokyo")
-                )!
+                    From<TimeZone>()
+                        .select(String.self, .attribute(\.abbreviation))
+                        .where(format: "%K ENDSWITH[c] %@", #keyPath(TimeZone.name), "Tokyo")
+                )! as Any
            }
        ),
        (
@@ -244,9 +257,13 @@ class FetchingAndQueryingDemoViewController: UIViewController, UITableViewDataSo
            query: { () -> Any in
                
                return Static.timeZonesStack.queryAttributes(
-                    From<TimeZone>(),
-                    Select<NSDictionary>(#keyPath(TimeZone.name), #keyPath(TimeZone.abbreviation)),
-                    OrderBy(.ascending(#keyPath(TimeZone.name)))
+                    From<TimeZone>()
+                        .select(
+                            NSDictionary.self,
+                            .attribute(\.name),
+                            .attribute(\.abbreviation)
+                        )
+                        .orderBy(.ascending(\.name))
                )!
            }
        ),
@@ -255,10 +272,17 @@ class FetchingAndQueryingDemoViewController: UIViewController, UITableViewDataSo
            query: { () -> Any in
                
                return Static.timeZonesStack.queryAttributes(
-                    From<TimeZone>(),
-                    Select<NSDictionary>(.count(#keyPath(TimeZone.abbreviation)), #keyPath(TimeZone.abbreviation)),
-                    GroupBy(#keyPath(TimeZone.abbreviation)),
-                    OrderBy(.ascending(#keyPath(TimeZone.secondsFromGMT)), .ascending(#keyPath(TimeZone.name)))
+                    From<TimeZone>()
+                        .select(
+                            NSDictionary.self,
+                            .count(\.abbreviation),
+                            .attribute(\.abbreviation)
+                        )
+                        .groupBy(\.abbreviation)
+                        .orderBy(
+                            .ascending(\.secondsFromGMT),
+                            .ascending(\.name)
+                        )
                )!
            }
        ),
@@ -267,13 +291,17 @@ class FetchingAndQueryingDemoViewController: UIViewController, UITableViewDataSo
            query: { () -> Any in
                
                return Static.timeZonesStack.queryAttributes(
-                    From<TimeZone>(),
-                    Select<NSDictionary>(
-                        .count(#keyPath(TimeZone.hasDaylightSavingTime), as: "numberOfCountries"),
-                        #keyPath(TimeZone.hasDaylightSavingTime)
-                    ),
-                    GroupBy(#keyPath(TimeZone.hasDaylightSavingTime)),
-                    OrderBy(.descending(#keyPath(TimeZone.hasDaylightSavingTime)))
+                    From<TimeZone>()
+                        .select(
+                            NSDictionary.self,
+                            .count(\.hasDaylightSavingTime, as: "numberOfCountries"),
+                            .attribute(\.hasDaylightSavingTime)
+                        )
+                        .groupBy(\.hasDaylightSavingTime)
+                        .orderBy(
+                            .descending(\.hasDaylightSavingTime),
+                            .ascending(\.name)
+                        )
                )!
            }
        )
--- a/CoreStoreDemo/CoreStoreDemo/Info.plist
+++ b/CoreStoreDemo/CoreStoreDemo/Info.plist
@@ -17,7 +17,7 @@
 	<key>CFBundlePackageType</key>
 	<string>APPL</string>
 	<key>CFBundleShortVersionString</key>
-	<string>4.0.1</string>
+	<string>4.0.3</string>
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>
--- a/Demo/ListObserverDemoViewController.swift
+++ b/Demo/ListObserverDemoViewController.swift
@@ -10,7 +10,7 @@ import UIKit
 import CoreStore


-private struct Static {
+struct ColorsDemo {
    
    enum Filter: String {
        
@@ -28,13 +28,13 @@ private struct Static {
            }
        }
        
-        func whereClause() -> Where {
+        func whereClause() -> Where<Palette> {
            
            switch self {
                
-            case .all: return Where(true)
-            case .light: return Where("%K >= %@", #keyPath(Palette.brightness), 0.9)
-            case .dark: return Where("%K <= %@", #keyPath(Palette.brightness), 0.4)
+            case .all: return .init()
+            case .light: return (\Palette.brightness >= 0.9)
+            case .dark: return (\Palette.brightness <= 0.4)
            }
        }
    }
@@ -45,25 +45,38 @@ private struct Static {
            
            self.palettes.refetch(
                self.filter.whereClause(),
-                OrderBy(.ascending(#keyPath(Palette.hue)))
+                OrderBy<Palette>(.ascending(\.hue))
            )
        }
    }
    
+    static let stack: DataStack = {
+     
+        return DataStack(
+            CoreStoreSchema(
+                modelVersion: "ColorsDemo",
+                entities: [
+                    Entity<Palette>("Palette"),
+                ],
+                versionLock: [
+                    "Palette": [0x8c25aa53c7c90a28, 0xa243a34d25f1a3a7, 0x56565b6935b6055a, 0x4f988bb257bf274f]
+                ]
+            )
+        )
+    }()
+    
    static let palettes: ListMonitor<Palette> = {
        
-        try! CoreStore.addStorageAndWait(
+        try! ColorsDemo.stack.addStorageAndWait(
            SQLiteStore(
                fileName: "ColorsDemo.sqlite",
-                configuration: "ObservingDemo",
                localStorageOptions: .recreateStoreOnModelMismatch
            )
        )
-        
-        return CoreStore.monitorSectionedList(
-            From<Palette>(),
-            SectionBy(#keyPath(Palette.colorName)),
-            OrderBy(.ascending(#keyPath(Palette.hue)))
+        return ColorsDemo.stack.monitorSectionedList(
+            From<Palette>()
+                .sectionBy(\.colorName)
+                .orderBy(.ascending(\.hue))
        )
    }()
 }
@@ -77,7 +90,7 @@ class ListObserverDemoViewController: UITableViewController, ListSectionObserver
    
    deinit {
        
-        Static.palettes.removeObserver(self)
+        ColorsDemo.palettes.removeObserver(self)
    }
    
    
@@ -98,7 +111,7 @@ class ListObserverDemoViewController: UITableViewController, ListSectionObserver
        ]
        
        let filterBarButton = UIBarButtonItem(
-            title: Static.filter.rawValue,
+            title: ColorsDemo.filter.rawValue,
            style: .plain,
            target: self,
            action: #selector(self.filterBarButtonItemTouched(_:))
@@ -113,9 +126,9 @@ class ListObserverDemoViewController: UITableViewController, ListSectionObserver
        ]
        self.filterBarButton = filterBarButton
        
-        Static.palettes.addObserver(self)
+        ColorsDemo.palettes.addObserver(self)
        
-        self.setTable(enabled: !Static.palettes.isPendingRefetch)
+        self.setTable(enabled: !ColorsDemo.palettes.isPendingRefetch)
    }
    
    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
@@ -137,19 +150,19 @@ class ListObserverDemoViewController: UITableViewController, ListSectionObserver
    
    override func numberOfSections(in tableView: UITableView) -> Int {
        
-        return Static.palettes.numberOfSections()
+        return ColorsDemo.palettes.numberOfSections()
    }

    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        
-        return Static.palettes.numberOfObjectsInSection(section)
+        return ColorsDemo.palettes.numberOfObjectsInSection(section)
    }
    
    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        
        let cell = tableView.dequeueReusableCell(withIdentifier: "PaletteTableViewCell") as! PaletteTableViewCell
        
-        let palette = Static.palettes[indexPath]
+        let palette = ColorsDemo.palettes[indexPath]
        cell.colorView?.backgroundColor = palette.color
        cell.label?.text = palette.colorText
        
@@ -165,7 +178,7 @@ class ListObserverDemoViewController: UITableViewController, ListSectionObserver
        
        self.performSegue(
            withIdentifier: "ObjectObserverDemoViewController",
-            sender: Static.palettes[indexPath]
+            sender: ColorsDemo.palettes[indexPath]
        )
    }
    
@@ -174,8 +187,8 @@ class ListObserverDemoViewController: UITableViewController, ListSectionObserver
        switch editingStyle {
            
        case .delete:
-            let palette = Static.palettes[indexPath]
-            CoreStore.perform(
+            let palette = ColorsDemo.palettes[indexPath]
+            ColorsDemo.stack.perform(
                asynchronous: { (transaction) in
                    
                    transaction.delete(palette)
@@ -190,7 +203,7 @@ class ListObserverDemoViewController: UITableViewController, ListSectionObserver
    
    override func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
        
-        return Static.palettes.sectionInfoAtIndex(section).name
+        return ColorsDemo.palettes.sectionInfoAtIndex(section).name
    }
    
    
@@ -213,7 +226,7 @@ class ListObserverDemoViewController: UITableViewController, ListSectionObserver
    
    func listMonitorDidRefetch(_ monitor: ListMonitor<Palette>) {
        
-        self.filterBarButton?.title = Static.filter.rawValue
+        self.filterBarButton?.title = ColorsDemo.filter.rawValue
        self.tableView.reloadData()
        self.setTable(enabled: true)
    }
@@ -235,7 +248,7 @@ class ListObserverDemoViewController: UITableViewController, ListSectionObserver
        
        if let cell = self.tableView.cellForRow(at: indexPath) as? PaletteTableViewCell {
            
-            let palette = Static.palettes[indexPath]
+            let palette = ColorsDemo.palettes[indexPath]
            cell.colorView?.backgroundColor = palette.color
            cell.label?.text = palette.colorText
        }
@@ -268,7 +281,7 @@ class ListObserverDemoViewController: UITableViewController, ListSectionObserver
    
    @IBAction private dynamic func resetBarButtonItemTouched(_ sender: AnyObject?) {
        
-        CoreStore.perform(
+        ColorsDemo.stack.perform(
            asynchronous: { (transaction) in
                
                transaction.deleteAll(From<Palette>())
@@ -279,16 +292,16 @@ class ListObserverDemoViewController: UITableViewController, ListSectionObserver
    
    @IBAction private dynamic func filterBarButtonItemTouched(_ sender: AnyObject?) {
        
-        Static.filter = Static.filter.next()
+        ColorsDemo.filter = ColorsDemo.filter.next()
    }
    
    @IBAction private dynamic func addBarButtonItemTouched(_ sender: AnyObject?) {
        
-        CoreStore.perform(
+        ColorsDemo.stack.perform(
            asynchronous: { (transaction) in
                
                let palette = transaction.create(Into<Palette>())
-                palette.setInitialValues()
+                palette.setInitialValues(in: transaction)
            },
            completion: { _ in }
        )
--- a/Demo/ObjectObserverDemoViewController.swift
+++ b/Demo/ObjectObserverDemoViewController.swift
@@ -29,7 +29,7 @@ class ObjectObserverDemoViewController: UIViewController, ObjectObserver {
            
            if let palette = newValue {
                
-                self.monitor = CoreStore.monitorObject(palette)
+                self.monitor = ColorsDemo.stack.monitorObject(palette)
            }
            else {
                
@@ -50,22 +50,22 @@ class ObjectObserverDemoViewController: UIViewController, ObjectObserver {
    
    required init?(coder aDecoder: NSCoder) {
        
-        if let palette = CoreStore.fetchOne(From<Palette>(), OrderBy(.ascending(#keyPath(Palette.hue)))) {
+        if let palette = ColorsDemo.stack.fetchOne(From<Palette>().orderBy(.ascending(\.hue))) {
            
-            self.monitor = CoreStore.monitorObject(palette)
+            self.monitor = ColorsDemo.stack.monitorObject(palette)
        }
        else {
            
-            _ = try? CoreStore.perform(
+            _ = try? ColorsDemo.stack.perform(
                synchronous: { (transaction) in
                    
-                    let palette = transaction.create(Into(Palette.self))
-                    palette.setInitialValues()
+                    let palette = transaction.create(Into<Palette>())
+                    palette.setInitialValues(in: transaction)
                }
            )
            
-            let palette = CoreStore.fetchOne(From<Palette>(), OrderBy(.ascending(#keyPath(Palette.hue))))!
-            self.monitor = CoreStore.monitorObject(palette)
+            let palette = ColorsDemo.stack.fetchOne(From<Palette>().orderBy(.ascending(\.hue)))!
+            self.monitor = ColorsDemo.stack.monitorObject(palette)
        }
        
        super.init(coder: aDecoder)
@@ -85,7 +85,7 @@ class ObjectObserverDemoViewController: UIViewController, ObjectObserver {
    
    // MARK: ObjectObserver
    
-    func objectMonitor(_ monitor: ObjectMonitor<Palette>, didUpdateObject object: Palette, changedPersistentKeys: Set<KeyPath>) {
+    func objectMonitor(_ monitor: ObjectMonitor<Palette>, didUpdateObject object: Palette, changedPersistentKeys: Set<KeyPathString>) {
        
        self.reloadPaletteInfo(object, changedKeys: changedPersistentKeys)
    }
@@ -121,12 +121,12 @@ class ObjectObserverDemoViewController: UIViewController, ObjectObserver {
    @IBAction dynamic func hueSliderValueDidChange(_ sender: AnyObject?) {
        
        let hue = self.hueSlider?.value ?? 0
-        CoreStore.perform(
+        ColorsDemo.stack.perform(
            asynchronous: { [weak self] (transaction) in
                
                if let palette = transaction.edit(self?.monitor?.object) {
                    
-                    palette.hue = Int32(hue)
+                    palette.hue .= Int(hue)
                }
            },
            completion: { _ in }
@@ -136,12 +136,12 @@ class ObjectObserverDemoViewController: UIViewController, ObjectObserver {
    @IBAction dynamic func saturationSliderValueDidChange(_ sender: AnyObject?) {
        
        let saturation = self.saturationSlider?.value ?? 0
-        CoreStore.perform(
+        ColorsDemo.stack.perform(
            asynchronous: { [weak self] (transaction) in
                
                if let palette = transaction.edit(self?.monitor?.object) {
                    
-                    palette.saturation = saturation
+                    palette.saturation .= saturation
                }
            },
            completion: { _ in }
@@ -151,12 +151,12 @@ class ObjectObserverDemoViewController: UIViewController, ObjectObserver {
    @IBAction dynamic func brightnessSliderValueDidChange(_ sender: AnyObject?) {
        
        let brightness = self.brightnessSlider?.value ?? 0
-        CoreStore.perform(
+        ColorsDemo.stack.perform(
            asynchronous: { [weak self] (transaction) in
                
                if let palette = transaction.edit(self?.monitor?.object) {
                    
-                    palette.brightness = brightness
+                    palette.brightness .= brightness
                }
            },
            completion: { _ in }
@@ -165,7 +165,7 @@ class ObjectObserverDemoViewController: UIViewController, ObjectObserver {
    
    @IBAction dynamic func deleteBarButtonTapped(_ sender: AnyObject?) {
        
-        CoreStore.perform(
+        ColorsDemo.stack.perform(
            asynchronous: { [weak self] (transaction) in
                
                transaction.delete(self?.monitor?.object)
@@ -176,7 +176,7 @@ class ObjectObserverDemoViewController: UIViewController, ObjectObserver {
    
    func reloadPaletteInfo(_ palette: Palette, changedKeys: Set<String>?) {
        
-        self.colorNameLabel?.text = palette.colorName
+        self.colorNameLabel?.text = palette.colorName.value
        
        let color = palette.color
        self.colorNameLabel?.textColor = color
@@ -184,17 +184,17 @@ class ObjectObserverDemoViewController: UIViewController, ObjectObserver {
        
        self.hsbLabel?.text = palette.colorText
        
-        if changedKeys == nil || changedKeys?.contains(#keyPath(Palette.hue)) == true {
+        if changedKeys == nil || changedKeys?.contains(Palette.keyPath{ $0.hue }) == true {
            
-            self.hueSlider?.value = Float(palette.hue)
+            self.hueSlider?.value = Float(palette.hue.value)
        }
-        if changedKeys == nil || changedKeys?.contains(#keyPath(Palette.saturation)) == true {
+        if changedKeys == nil || changedKeys?.contains(Palette.keyPath{ $0.saturation }) == true {
            
-            self.saturationSlider?.value = palette.saturation
+            self.saturationSlider?.value = palette.saturation.value
        }
-        if changedKeys == nil || changedKeys?.contains(#keyPath(Palette.brightness)) == true {
+        if changedKeys == nil || changedKeys?.contains(Palette.keyPath{ $0.brightness }) == true {
            
-            self.brightnessSlider?.value = palette.brightness
+            self.brightnessSlider?.value = palette.brightness.value
        }
    }
 }
--- a/CoreStoreDemo/CoreStoreDemo/List
+++ b/CoreStoreDemo/CoreStoreDemo/List
@@ -14,64 +14,65 @@ import CoreStore

 // MARK: - Palette

-class Palette: NSManagedObject {
-
-    @NSManaged var hue: Int32
-    @NSManaged var saturation: Float
-    @NSManaged var brightness: Float
+final class Palette: CoreStoreObject {
    
-    @objc dynamic var colorName: String {
+    let hue = Value.Required<Int>("hue", initial: 0)
+    let saturation = Value.Required<Float>("saturation", initial: 0)
+    let brightness = Value.Required<Float>("brightness", initial: 0)
+    
+    let colorName = Value.Optional<String>(
+        "colorName",
+        isTransient: true,
+        customGetter: Palette.getColorName
+    )
+    
+    private static func getColorName(_ partialObject: PartialObject<Palette>) -> String? {
        
-        get {
+        if let colorName = partialObject.primitiveValue(for: { $0.colorName }) {
            
-            let KVCKey = #keyPath(Palette.colorName)
-            if let colorName = self.getValue(forKvcKey: KVCKey) as? String {
-                
-                return colorName
-            }
-            
-            let colorName: String
-            switch self.hue % 360 {
-                
-            case 0 ..< 20: colorName = "Lower Reds"
-            case 20 ..< 57: colorName = "Oranges and Browns"
-            case 57 ..< 90: colorName = "Yellow-Greens"
-            case 90 ..< 159: colorName = "Greens"
-            case 159 ..< 197: colorName = "Blue-Greens"
-            case 197 ..< 241: colorName = "Blues"
-            case 241 ..< 297: colorName = "Violets"
-            case 297 ..< 331: colorName = "Magentas"
-            default: colorName = "Upper Reds"
-            }
-            
-            self.setPrimitiveValue(colorName, forKey: KVCKey)
            return colorName
        }
-        set {
+        
+        let colorName: String
+        switch partialObject.value(for: { $0.hue }) % 360 {
            
-            self.setValue(newValue.cs_toImportableNativeType(), forKvcKey: #keyPath(Palette.colorName))
+        case 0 ..< 20: colorName = "Lower Reds"
+        case 20 ..< 57: colorName = "Oranges and Browns"
+        case 57 ..< 90: colorName = "Yellow-Greens"
+        case 90 ..< 159: colorName = "Greens"
+        case 159 ..< 197: colorName = "Blue-Greens"
+        case 197 ..< 241: colorName = "Blues"
+        case 241 ..< 297: colorName = "Violets"
+        case 297 ..< 331: colorName = "Magentas"
+        default: colorName = "Upper Reds"
        }
+        
+        partialObject.setPrimitiveValue(colorName, for: { $0.colorName })
+        return colorName
    }
+}
+
+extension Palette {
    
    var color: UIColor {
        
        return UIColor(
-            hue: CGFloat(self.hue) / 360.0,
-            saturation: CGFloat(self.saturation),
-            brightness: CGFloat(self.brightness),
+            hue: CGFloat(self.hue.value) / 360.0,
+            saturation: CGFloat(self.saturation.value),
+            brightness: CGFloat(self.brightness.value),
            alpha: 1.0
        )
    }
    
    var colorText: String {
        
-        return "H: \(self.hue)˚, S: \(round(self.saturation * 100.0))%, B: \(round(self.brightness * 100.0))%"
+        return "H: \(self.hue.value)˚, S: \(round(self.saturation.value * 100.0))%, B: \(round(self.brightness.value * 100.0))%"
    }
    
-    func setInitialValues() {
+    func setInitialValues(in transaction: BaseDataTransaction) {
        
-        self.hue = Int32(arc4random_uniform(360))
-        self.saturation = 1.0
-        self.brightness = Float(arc4random_uniform(70) + 30) / 100.0
+        self.hue .= Int(arc4random_uniform(360))
+        self.saturation .= Float(1.0)
+        self.brightness .= Float(arc4random_uniform(70) + 30) / 100.0
    }
 }
--- a/Demo/CustomLoggerViewController.swift
+++ b/Demo/CustomLoggerViewController.swift
@@ -99,8 +99,8 @@ class CustomLoggerViewController: UIViewController, CoreStoreLogger {
            
        case 0?:
            let request = NSFetchRequest<NSFetchRequestResult>()
-            Where(true).applyToFetchRequest(request)
-            Where(false).applyToFetchRequest(request)
+            Where<NSManagedObject>(true).applyToFetchRequest(request)
+            Where<NSManagedObject>(false).applyToFetchRequest(request)
            
        case 1?:
            _ = try? dataStack.addStorageAndWait(
@@ -113,7 +113,7 @@ class CustomLoggerViewController: UIViewController, CoreStoreLogger {
        case 2?:
            DispatchQueue.global(qos: .background).async {
                
-                _ = self.dataStack.fetchOne(From<Palette>())
+                _ = self.dataStack.fetchOne(From<Place>())
            }
            
        default:
--- a/Demo/MigrationsDemoViewController.swift
+++ b/Demo/MigrationsDemoViewController.swift
@@ -46,7 +46,7 @@ class MigrationsDemoViewController: UIViewController, ListObserver, UITableViewD
        self.present(alert, animated: true, completion: nil)
        
        
-        let modelMetadata = withExtendedLifetime(DataStack(modelName: "MigrationDemo")) {
+        let modelMetadata = withExtendedLifetime(DataStack(xcodeModelName: "MigrationDemo")) {
            (dataStack: DataStack) -> ModelMetadata in
            
            let models = self.models
@@ -109,7 +109,7 @@ class MigrationsDemoViewController: UIViewController, ListObserver, UITableViewD
        
        let dna = (self.listMonitor?[indexPath] as? OrganismProtocol)?.dna.description ?? ""
        cell.dnaLabel?.text = "DNA: \(dna)"
-        cell.mutateButtonHandler = { [weak self] _ -> Void in
+        cell.mutateButtonHandler = { [weak self] () -> Void in
            
            guard let `self` = self,
                let dataStack = self.dataStack,
@@ -287,8 +287,8 @@ class MigrationsDemoViewController: UIViewController, ListObserver, UITableViewD
                self.set(dataStack: dataStack, model: model, scrollToSelection: true)
                
                let count = dataStack.queryValue(
-                    From(model.entityType),
-                    Select<Int>(.count(#keyPath(OrganismV1.dna))))!
+                    From<NSManagedObject>(model.entityType)
+                        .select(Int.self, .count(#keyPath(OrganismV1.dna))))!
                if count > 0 {
                    
                    self.setEnabled(true)
@@ -361,14 +361,18 @@ class MigrationsDemoViewController: UIViewController, ListObserver, UITableViewD
            
            self.segmentedControl?.selectedSegmentIndex = self.models
                .index(
-                    where: { (_, _, schemaHistory) -> Bool in
+                    where: { (arg) -> Bool in
                        
-                        schemaHistory.currentModelVersion == model.schemaHistory.currentModelVersion
+                        let (_, _, schemaHistory) = arg
+                        return schemaHistory.currentModelVersion == model.schemaHistory.currentModelVersion
                    }
                )!
            
            self._dataStack = dataStack
-            let listMonitor = dataStack.monitorList(From(model.entityType), OrderBy(.descending("dna")))
+            let listMonitor = dataStack.monitorList(
+                From(model.entityType),
+                OrderBy<NSManagedObject>(.descending(#keyPath(OrganismV1.dna)))
+            )
            listMonitor.addObserver(self)
            self._listMonitor = listMonitor
            
--- a/Demo/StackSetupDemoViewController.swift
+++ b/Demo/StackSetupDemoViewController.swift
@@ -17,7 +17,7 @@ private struct Static {
    
    static let facebookStack: DataStack = {
        
-        let dataStack = DataStack(modelName: "StackSetupDemo")
+        let dataStack = DataStack(xcodeModelName: "StackSetupDemo")
        try! dataStack.addStorageAndWait(
            SQLiteStore(
                fileName: "AccountsDemo_FB_Male.sqlite",
@@ -55,7 +55,7 @@ private struct Static {
    
    static let twitterStack: DataStack = {
        
-        let dataStack = DataStack(modelName: "StackSetupDemo")
+        let dataStack = DataStack(xcodeModelName: "StackSetupDemo")
        try! dataStack.addStorageAndWait(
            SQLiteStore(
                fileName: "AccountsDemo_TW_Male.sqlite",
--- a/Demo/TransactionsDemoViewController.swift
+++ b/Demo/TransactionsDemoViewController.swift
@@ -131,7 +131,7 @@ class TransactionsDemoViewController: UIViewController, MKMapViewDelegate, Objec
        // none
    }
    
-    func objectMonitor(_ monitor: ObjectMonitor<Place>, didUpdateObject object: Place, changedPersistentKeys: Set<KeyPath>) {
+    func objectMonitor(_ monitor: ObjectMonitor<Place>, didUpdateObject object: Place, changedPersistentKeys: Set<KeyPathString>) {
        
        if let mapView = self.mapView {
            
--- a/CoreStoreTests/BaseTests/BaseTestDataTestCase.swift
+++ b/CoreStoreTests/BaseTests/BaseTestDataTestCase.swift
@@ -2,8 +2,25 @@
 //  BaseTestDataTestCase.swift
 //  CoreStore
 //
-//  Created by John Rommel Estropia on 2016/06/11.
-//  Copyright © 2016 John Rommel Estropia. All rights reserved.
+//  Copyright © 2017 John Rommel Estropia
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all
+//  copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+//  SOFTWARE.
 //

 import Foundation
--- a/CoreStoreTests/ConvenienceTests.swift
+++ b/CoreStoreTests/ConvenienceTests.swift
@@ -40,8 +40,8 @@ class ConvenienceTests: BaseTestCase {
            let controller = stack.createFetchedResultsController(
                From<TestEntity1>(),
                SectionBy(#keyPath(TestEntity1.testString)),
-                Where("%@ > %d", #keyPath(TestEntity1.testEntityID), 100),
-                OrderBy(.ascending(#keyPath(TestEntity1.testString))),
+                Where<TestEntity1>("%@ > %d", #keyPath(TestEntity1.testEntityID), 100),
+                OrderBy<TestEntity1>(.ascending(#keyPath(TestEntity1.testString))),
                Tweak { $0.fetchLimit = 10 }
            )
            XCTAssertEqual(controller.managedObjectContext, stack.mainContext)
@@ -49,11 +49,11 @@ class ConvenienceTests: BaseTestCase {
            XCTAssertEqual(controller.sectionNameKeyPath, #keyPath(TestEntity1.testString))
            XCTAssertEqual(
                controller.fetchRequest.sortDescriptors!,
-                OrderBy(.ascending(#keyPath(TestEntity1.testString))).sortDescriptors
+                OrderBy<TestEntity1>(.ascending(#keyPath(TestEntity1.testString))).sortDescriptors
            )
            XCTAssertEqual(
                controller.fetchRequest.predicate,
-                Where("%@ > %d", #keyPath(TestEntity1.testEntityID), 100).predicate
+                Where<TestEntity1>("%@ > %d", #keyPath(TestEntity1.testEntityID), 100).predicate
            )
            XCTAssertEqual(controller.fetchRequest.fetchLimit, 10)
        }
@@ -69,8 +69,8 @@ class ConvenienceTests: BaseTestCase {
                let controller = transaction.createFetchedResultsController(
                    From<TestEntity1>(),
                    SectionBy(#keyPath(TestEntity1.testString)),
-                    Where("%@ > %d", #keyPath(TestEntity1.testEntityID), 100),
-                    OrderBy(.ascending(#keyPath(TestEntity1.testString))),
+                    Where<TestEntity1>("%@ > %d", #keyPath(TestEntity1.testEntityID), 100),
+                    OrderBy<TestEntity1>(.ascending(#keyPath(TestEntity1.testString))),
                    Tweak { $0.fetchLimit = 10 }
                )
                XCTAssertEqual(controller.managedObjectContext, transaction.context)
@@ -78,11 +78,11 @@ class ConvenienceTests: BaseTestCase {
                XCTAssertEqual(controller.sectionNameKeyPath, #keyPath(TestEntity1.testString))
                XCTAssertEqual(
                    controller.fetchRequest.sortDescriptors!,
-                    OrderBy(.ascending(#keyPath(TestEntity1.testString))).sortDescriptors
+                    OrderBy<TestEntity1>(.ascending(#keyPath(TestEntity1.testString))).sortDescriptors
                )
                XCTAssertEqual(
                    controller.fetchRequest.predicate,
-                    Where("%@ > %d", #keyPath(TestEntity1.testEntityID), 100).predicate
+                    Where<TestEntity1>("%@ > %d", #keyPath(TestEntity1.testEntityID), 100).predicate
                )
                XCTAssertEqual(controller.fetchRequest.fetchLimit, 10)
            }
--- a/CoreStoreTests/DynamicModelTests.swift
+++ b/CoreStoreTests/DynamicModelTests.swift
@@ -37,7 +37,7 @@ import CoreStore

 class Animal: CoreStoreObject {
    
-    let species = Value.Required<String>("species", default: "Swift")
+    let species = Value.Required<String>("species", initial: "Swift")
    let master = Relationship.ToOne<Person>("master")
    let color = Transformable.Optional<Color>("color")
 }
@@ -45,21 +45,66 @@ class Animal: CoreStoreObject {
 class Dog: Animal {
    
    let nickname = Value.Optional<String>("nickname")
-    let age = Value.Required<Int>("age", default: 1)
+    let age = Value.Required<Int>("age", initial: 1)
    let friends = Relationship.ToManyOrdered<Dog>("friends")
    let friendedBy = Relationship.ToManyUnordered<Dog>("friendedBy", inverse: { $0.friends })
 }

 class Person: CoreStoreObject {
-    let title = Value.Required<String>("title", default: "Mr.")
+    
+    let title = Value.Required<String>(
+        "title",
+        initial: "Mr.",
+        customSetter: Person.setTitle
+    )
+    
    let name = Value.Required<String>(
        "name",
-        customGetter: { (`self`, getValue) in
-            
-            return "\(self.title.value) \(getValue())"
-        }
+        initial: "",
+        customSetter: Person.setName
    )
+    
+    let displayName = Value.Optional<String>(
+        "displayName",
+        isTransient: true,
+        customGetter: Person.getDisplayName(_:),
+        affectedByKeyPaths: Person.keyPathsAffectingDisplayName()
+    )
+    
    let pets = Relationship.ToManyUnordered<Animal>("pets", inverse: { $0.master })
+    
+    private static func setTitle(_ partialObject: PartialObject<Person>, _ newValue: String) {
+        
+        partialObject.setPrimitiveValue(newValue, for: { $0.title })
+        partialObject.setPrimitiveValue(nil, for: { $0.displayName })
+    }
+    
+    private static func setName(_ partialObject: PartialObject<Person>, _ newValue: String) {
+        
+        partialObject.setPrimitiveValue(newValue, for: { $0.name })
+        partialObject.setPrimitiveValue(nil, for: { $0.displayName })
+    }
+    
+    static func getDisplayName(_ partialObject: PartialObject<Person>) -> String? {
+        
+        if let displayName = partialObject.primitiveValue(for: { $0.displayName }) {
+            
+            return displayName
+        }
+        let title = partialObject.value(for: { $0.title })
+        let name = partialObject.value(for: { $0.name })
+        let displayName = "\(title) \(name)"
+        partialObject.setPrimitiveValue(displayName, for: { $0.displayName })
+        return displayName
+    }
+    
+    static func keyPathsAffectingDisplayName() -> Set<String> {
+        
+        return [
+            String(keyPath: \Person.title),
+            String(keyPath: \Person.name)
+        ]
+    }
 }


@@ -67,7 +112,8 @@ class Person: CoreStoreObject {

 class DynamicModelTests: BaseTestDataTestCase {
    
-    func testDynamicModels_CanBeDeclaredCorrectly() {
+    @objc
+    dynamic func test_ThatDynamicModels_CanBeDeclaredCorrectly() {
        
        let dataStack = DataStack(
            CoreStoreSchema(
@@ -86,13 +132,13 @@ class DynamicModelTests: BaseTestDataTestCase {
        )
        self.prepareStack(dataStack, configurations: [nil]) { (stack) in
            
-            let k1 = Animal.keyPath({ $0.species })
+            let k1 = String(keyPath: \Animal.species)
            XCTAssertEqual(k1, "species")
            
-            let k2 = Dog.keyPath({ $0.species })
+            let k2 = String(keyPath: \Dog.species)
            XCTAssertEqual(k2, "species")
            
-            let k3 = Dog.keyPath({ $0.nickname })
+            let k3 = String(keyPath: \Dog.nickname)
            XCTAssertEqual(k3, "nickname")
            
            let updateDone = self.expectation(description: "update-done")
@@ -124,11 +170,25 @@ class DynamicModelTests: BaseTestDataTestCase {
                    let person = transaction.create(Into<Person>())
                    XCTAssertTrue(person.pets.value.isEmpty)
                    
+                    XCTAssertEqual(
+                        type(of: person.rawObject!).keyPathsForValuesAffectingValue(forKey: "displayName"),
+                        ["title", "name"]
+                    )
+                    
+                    person.name .= "Joe"
+                    
+                    XCTAssertEqual(person.rawObject!.value(forKey: "name") as! String?, "Joe")
+                    XCTAssertEqual(person.rawObject!.value(forKey: "displayName") as! String?, "Mr. Joe")
+                    
+                    person.rawObject!.setValue("AAAA", forKey: "displayName")
+                    XCTAssertEqual(person.rawObject!.value(forKey: "displayName") as! String?, "AAAA")
+                    
                    person.name .= "John"
-                    XCTAssertEqual(person.name.value, "Mr. John") // Custom getter
+                    XCTAssertEqual(person.name.value, "John")
+                    XCTAssertEqual(person.displayName.value, "Mr. John") // Custom getter
                    
                    person.title .= "Sir"
-                    XCTAssertEqual(person.name.value, "Sir John")
+                    XCTAssertEqual(person.displayName.value, "Sir John")
                    
                    person.pets.value.insert(dog)
                    XCTAssertEqual(person.pets.count, 1)
@@ -137,7 +197,7 @@ class DynamicModelTests: BaseTestDataTestCase {
                    XCTAssertEqual(dog.master.value, person)
                    XCTAssertEqual(dog.master.value?.pets.value.first, dog)
                },
-                success: {
+                success: { _ in
                    
                    updateDone.fulfill()
                },
@@ -149,17 +209,17 @@ class DynamicModelTests: BaseTestDataTestCase {
            stack.perform(
                asynchronous: { (transaction) in
                    
-                    let p1 = Animal.where({ $0.species == "Sparrow" })
+                    let p1 = Where<Animal>({ $0.species == "Sparrow" })
                    XCTAssertEqual(p1.predicate, NSPredicate(format: "%K == %@", "species", "Sparrow"))
                    
                    let bird = transaction.fetchOne(From<Animal>(), p1)
                    XCTAssertNotNil(bird)
                    XCTAssertEqual(bird!.species.value, "Sparrow")
                    
-                    let p2 = Dog.where({ $0.nickname == "Spot" })
+                    let p2 = Where<Dog>({ $0.nickname == "Spot" })
                    XCTAssertEqual(p2.predicate, NSPredicate(format: "%K == %@", "nickname", "Spot"))
                    
-                    let dog = transaction.fetchOne(From<Dog>(), p2)
+                    let dog = transaction.fetchOne(From<Dog>().where(\.nickname == "Spot"))
                    XCTAssertNotNil(dog)
                    XCTAssertEqual(dog!.nickname.value, "Spot")
                    XCTAssertEqual(dog!.species.value, "Dog")
@@ -168,10 +228,40 @@ class DynamicModelTests: BaseTestDataTestCase {
                    XCTAssertNotNil(person)
                    XCTAssertEqual(person!.pets.value.first, dog)
                    
-                    let p3 = Dog.where({ $0.age == 10 })
+                    let p3 = Where<Dog>({ $0.age == 10 })
                    XCTAssertEqual(p3.predicate, NSPredicate(format: "%K == %d", "age", 10))
+                    
+                    _ = transaction.fetchAll(
+                        From<Dog>()
+                            .where(\Animal.species == "Dog" && \.age == 10)
+                    )
+                    _ = transaction.fetchAll(
+                        From<Dog>()
+                            .where(\.age == 10 && \Animal.species == "Dog")
+                            .orderBy(.ascending({ $0.species }))
+                    )
+                    _ = transaction.fetchAll(
+                        From<Dog>(),
+                        Where<Dog>({ $0.age > 10 && $0.age <= 15 })
+                    )
+                    _ = transaction.fetchAll(
+                        From<Dog>(),
+                        Where<Dog>({ $0.species == "Dog" && $0.age == 10 })
+                    )
+                    _ = transaction.fetchAll(
+                        From<Dog>(),
+                        Where<Dog>({ $0.age == 10 && $0.species == "Dog" })
+                    )
+                    _ = transaction.fetchAll(
+                        From<Dog>(),
+                        Where<Dog>({ $0.age > 10 && $0.age <= 15 })
+                    )
+                    _ = transaction.fetchAll(
+                        From<Dog>(),
+                        (\Dog.age > 10 && \Dog.age <= 15)
+                    )
                },
-                success: {
+                success: { _ in
            
                    fetchDone.fulfill()
                },
@@ -184,6 +274,13 @@ class DynamicModelTests: BaseTestDataTestCase {
        }
    }
    
+    @objc
+    dynamic func test_ThatDynamicModelKeyPaths_CanBeCreated() {
+        
+        XCTAssertEqual(String(keyPath: \Animal.species), "species")
+        XCTAssertEqual(String(keyPath: \Dog.species), "species")
+    }
+    
    @nonobjc
    func prepareStack(_ dataStack: DataStack, configurations: [ModelConfiguration] = [nil], _ closure: (_ dataStack: DataStack) -> Void) {
        
--- a/CoreStoreTests/FetchTests.swift
+++ b/CoreStoreTests/FetchTests.swift
--- a/CoreStoreTests/GroupByTests.swift
+++ b/CoreStoreTests/GroupByTests.swift
@@ -38,14 +38,14 @@ final class GroupByTests: BaseTestCase {
        
        do {
            
-            let groupBy = GroupBy()
+            let groupBy = GroupBy<NSManagedObject>()
            XCTAssertEqual(groupBy, GroupBy([] as [String]))
            XCTAssertNotEqual(groupBy, GroupBy("key"))
            XCTAssertTrue(groupBy.keyPaths.isEmpty)
        }
        do {
            
-            let groupBy = GroupBy("key1")
+            let groupBy = GroupBy<NSManagedObject>("key1")
            XCTAssertEqual(groupBy, GroupBy("key1"))
            XCTAssertEqual(groupBy, GroupBy(["key1"]))
            XCTAssertNotEqual(groupBy, GroupBy("key2"))
@@ -53,7 +53,7 @@ final class GroupByTests: BaseTestCase {
        }
        do {
            
-            let groupBy = GroupBy("key1", "key2")
+            let groupBy = GroupBy<NSManagedObject>("key1", "key2")
            XCTAssertEqual(groupBy, GroupBy("key1", "key2"))
            XCTAssertEqual(groupBy, GroupBy(["key1", "key2"]))
            XCTAssertNotEqual(groupBy, GroupBy("key2", "key1"))
@@ -66,7 +66,7 @@ final class GroupByTests: BaseTestCase {
        
        self.prepareStack { (dataStack) in
            
-            let groupBy = GroupBy(#keyPath(TestEntity1.testString))
+            let groupBy = GroupBy<NSManagedObject>(#keyPath(TestEntity1.testString))
            
            let request = CoreStoreFetchRequest()
            _ = From<TestEntity1>().applyToFetchRequest(request, context: dataStack.mainContext)
--- a/CoreStoreTests/ImportTests.swift
+++ b/CoreStoreTests/ImportTests.swift
@@ -36,33 +36,33 @@ class ImportTests: BaseTestDataTestCase {
    @objc
    dynamic func test_ThatAttributeProtocols_BehaveCorrectly() {
        
-        XCTAssertEqual(NSNumber.cs_fromImportableNativeType(NSNumber(value: true))?.boolValue, true)
-        XCTAssertEqual(NSNumber.cs_fromImportableNativeType(NSNumber(value: Int16.max))?.int16Value, Int16.max)
-        XCTAssertEqual(NSNumber.cs_fromImportableNativeType(NSNumber(value: Int32.max))?.int32Value, Int32.max)
-        XCTAssertEqual(NSNumber.cs_fromImportableNativeType(NSNumber(value: Int64.max))?.int64Value, Int64.max)
-        XCTAssertEqual(NSNumber.cs_fromImportableNativeType(NSNumber(value: MAXFLOAT))?.floatValue, MAXFLOAT)
-        XCTAssertEqual(NSNumber.cs_fromImportableNativeType(NSNumber(value: Double(MAXFLOAT)))?.doubleValue, Double(MAXFLOAT))
+        XCTAssertEqual(NSNumber.cs_fromQueryableNativeType(NSNumber(value: true))?.boolValue, true)
+        XCTAssertEqual(NSNumber.cs_fromQueryableNativeType(NSNumber(value: Int16.max))?.int16Value, Int16.max)
+        XCTAssertEqual(NSNumber.cs_fromQueryableNativeType(NSNumber(value: Int32.max))?.int32Value, Int32.max)
+        XCTAssertEqual(NSNumber.cs_fromQueryableNativeType(NSNumber(value: Int64.max))?.int64Value, Int64.max)
+        XCTAssertEqual(NSNumber.cs_fromQueryableNativeType(NSNumber(value: MAXFLOAT))?.floatValue, MAXFLOAT)
+        XCTAssertEqual(NSNumber.cs_fromQueryableNativeType(NSNumber(value: Double(MAXFLOAT)))?.doubleValue, Double(MAXFLOAT))
        
-        XCTAssertEqual(NSDecimalNumber.cs_fromImportableNativeType(NSDecimalNumber(string: "1"))?.boolValue, true)
-        XCTAssertEqual(NSDecimalNumber.cs_fromImportableNativeType(NSDecimalNumber(string: Int16.max.description))?.int16Value, Int16.max)
-        XCTAssertEqual(NSDecimalNumber.cs_fromImportableNativeType(NSDecimalNumber(string: Int32.max.description))?.int32Value, Int32.max)
-        XCTAssertEqual(NSDecimalNumber.cs_fromImportableNativeType(NSDecimalNumber(string: Int64.max.description))?.int64Value, Int64.max)
-        XCTAssertEqual(NSDecimalNumber.cs_fromImportableNativeType(NSDecimalNumber(string: MAXFLOAT.description))?.doubleValue, NSDecimalNumber(string: MAXFLOAT.description).doubleValue)
-        XCTAssertEqual(NSDecimalNumber.cs_fromImportableNativeType(NSDecimalNumber(string: MAXFLOAT.description))?.floatValue, NSDecimalNumber(string: MAXFLOAT.description).floatValue)
+        XCTAssertEqual(NSDecimalNumber.cs_fromQueryableNativeType(NSDecimalNumber(string: "1"))?.boolValue, true)
+        XCTAssertEqual(NSDecimalNumber.cs_fromQueryableNativeType(NSDecimalNumber(string: Int16.max.description))?.int16Value, Int16.max)
+        XCTAssertEqual(NSDecimalNumber.cs_fromQueryableNativeType(NSDecimalNumber(string: Int32.max.description))?.int32Value, Int32.max)
+        XCTAssertEqual(NSDecimalNumber.cs_fromQueryableNativeType(NSDecimalNumber(string: Int64.max.description))?.int64Value, Int64.max)
+        XCTAssertEqual(NSDecimalNumber.cs_fromQueryableNativeType(NSDecimalNumber(string: MAXFLOAT.description))?.doubleValue, NSDecimalNumber(string: MAXFLOAT.description).doubleValue)
+        XCTAssertEqual(NSDecimalNumber.cs_fromQueryableNativeType(NSDecimalNumber(string: MAXFLOAT.description))?.floatValue, NSDecimalNumber(string: MAXFLOAT.description).floatValue)
        
-        XCTAssertEqual(NSNumber.cs_fromImportableNativeType(NSDecimalNumber(string: "1"))?.boolValue, true)
-        XCTAssertEqual(NSNumber.cs_fromImportableNativeType(NSDecimalNumber(string: Int16.max.description))?.int16Value, Int16.max)
-        XCTAssertEqual(NSNumber.cs_fromImportableNativeType(NSDecimalNumber(string: Int32.max.description))?.int32Value, Int32.max)
-        XCTAssertEqual(NSNumber.cs_fromImportableNativeType(NSDecimalNumber(string: Int64.max.description))?.int64Value, Int64.max)
-        XCTAssertEqual(NSNumber.cs_fromImportableNativeType(NSDecimalNumber(string: MAXFLOAT.description))?.doubleValue, NSDecimalNumber(string: MAXFLOAT.description).doubleValue)
-        XCTAssertEqual(NSNumber.cs_fromImportableNativeType(NSDecimalNumber(string: MAXFLOAT.description))?.floatValue, NSDecimalNumber(string: MAXFLOAT.description).floatValue)
+        XCTAssertEqual(NSNumber.cs_fromQueryableNativeType(NSDecimalNumber(string: "1"))?.boolValue, true)
+        XCTAssertEqual(NSNumber.cs_fromQueryableNativeType(NSDecimalNumber(string: Int16.max.description))?.int16Value, Int16.max)
+        XCTAssertEqual(NSNumber.cs_fromQueryableNativeType(NSDecimalNumber(string: Int32.max.description))?.int32Value, Int32.max)
+        XCTAssertEqual(NSNumber.cs_fromQueryableNativeType(NSDecimalNumber(string: Int64.max.description))?.int64Value, Int64.max)
+        XCTAssertEqual(NSNumber.cs_fromQueryableNativeType(NSDecimalNumber(string: MAXFLOAT.description))?.doubleValue, NSDecimalNumber(string: MAXFLOAT.description).doubleValue)
+        XCTAssertEqual(NSNumber.cs_fromQueryableNativeType(NSDecimalNumber(string: MAXFLOAT.description))?.floatValue, NSDecimalNumber(string: MAXFLOAT.description).floatValue)
        
-        XCTAssertNil(NSDecimalNumber.cs_fromImportableNativeType(NSNumber(value: true)))
-        XCTAssertNil(NSDecimalNumber.cs_fromImportableNativeType(NSNumber(value: Int16.max)))
-        XCTAssertNil(NSDecimalNumber.cs_fromImportableNativeType(NSNumber(value: Int32.max)))
-        XCTAssertNil(NSDecimalNumber.cs_fromImportableNativeType(NSNumber(value: Int64.max)))
-        XCTAssertNil(NSDecimalNumber.cs_fromImportableNativeType(NSNumber(value: MAXFLOAT)))
-        XCTAssertNil(NSDecimalNumber.cs_fromImportableNativeType(NSNumber(value: Double(MAXFLOAT))))
+        XCTAssertNil(NSDecimalNumber.cs_fromQueryableNativeType(NSNumber(value: true)))
+        XCTAssertNil(NSDecimalNumber.cs_fromQueryableNativeType(NSNumber(value: Int16.max)))
+        XCTAssertNil(NSDecimalNumber.cs_fromQueryableNativeType(NSNumber(value: Int32.max)))
+        XCTAssertNil(NSDecimalNumber.cs_fromQueryableNativeType(NSNumber(value: Int64.max)))
+        XCTAssertNil(NSDecimalNumber.cs_fromQueryableNativeType(NSNumber(value: MAXFLOAT)))
+        XCTAssertNil(NSDecimalNumber.cs_fromQueryableNativeType(NSNumber(value: Double(MAXFLOAT))))
        
        XCTAssertEqual(true.cs_toQueryableNativeType(), NSNumber(value: true))
        XCTAssertEqual(Int16.max.cs_toQueryableNativeType(), NSNumber(value: Int16.max))
@@ -444,7 +444,7 @@ class ImportTests: BaseTestDataTestCase {
                            XCTAssertNil(object)
                            XCTAssertEqual(transaction.fetchCount(From<TestEntity1>()), 5)
                            
-                            let existingObjects = transaction.fetchAll(From<TestEntity1>(), Where(#keyPath(TestEntity1.testEntityID), isEqualTo: 105))
+                            let existingObjects = transaction.fetchAll(From<TestEntity1>(), Where<TestEntity1>(#keyPath(TestEntity1.testEntityID), isEqualTo: 105))
                            XCTAssertNotNil(existingObjects)
                            XCTAssertEqual(existingObjects?.count, 1)
                            
@@ -565,7 +565,9 @@ class ImportTests: BaseTestDataTestCase {
                        XCTAssertEqual(objects.count, 2)
                        
                        zip(objects, sourceArray)
-                            .forEach { object, dictionary in
+                            .forEach {
+                                
+                                let (object, dictionary) = $0
                                XCTAssertEqual(object.testEntityID, dictionary[(#keyPath(TestEntity1.testEntityID))] as? NSNumber)
                                XCTAssertEqual(object.testBoolean, dictionary[(#keyPath(TestEntity1.testBoolean))] as? NSNumber)
                                XCTAssertEqual(object.testNumber, dictionary[(#keyPath(TestEntity1.testNumber))] as? NSNumber)
@@ -618,7 +620,7 @@ class ImportTests: BaseTestDataTestCase {
                            errorExpectation.fulfill()
                            XCTAssertEqual(transaction.fetchCount(From<TestEntity1>()), 6)
                            
-                            let object = transaction.fetchOne(From<TestEntity1>(), Where(#keyPath(TestEntity1.testEntityID), isEqualTo: 106))
+                            let object = transaction.fetchOne(From<TestEntity1>(), Where<TestEntity1>(#keyPath(TestEntity1.testEntityID), isEqualTo: 106))
                            XCTAssertNotNil(object)
                            XCTAssertEqual(object?.testEntityID, NSNumber(value: 106))
                            XCTAssertNil(object?.testBoolean)
@@ -657,7 +659,7 @@ class ImportTests: BaseTestDataTestCase {
                            errorExpectation.fulfill()
                            XCTAssertEqual(transaction.fetchCount(From<TestEntity1>()), 6)
                            
-                            let existingObjects = transaction.fetchAll(From<TestEntity1>(), Where(#keyPath(TestEntity1.testEntityID), isEqualTo: 105))
+                            let existingObjects = transaction.fetchAll(From<TestEntity1>(), Where<TestEntity1>(#keyPath(TestEntity1.testEntityID), isEqualTo: 105))
                            XCTAssertNotNil(existingObjects)
                            XCTAssertEqual(existingObjects?.count, 1)
                            
@@ -743,7 +745,7 @@ class ImportTests: BaseTestDataTestCase {
                            XCTAssertEqual(object?.testData, ("nil:TestEntity1:7" as NSString).data(using: String.Encoding.utf8.rawValue)!)
                            XCTAssertEqual(object?.testDate, self.dateFormatter.date(from: "2000-01-07T00:00:00Z")!)
                            
-                            let existingObjects = transaction.fetchAll(From<TestEntity1>(), Where(#keyPath(TestEntity1.testEntityID), isEqualTo: 106))
+                            let existingObjects = transaction.fetchAll(From<TestEntity1>(), Where<TestEntity1>(#keyPath(TestEntity1.testEntityID), isEqualTo: 106))
                            XCTAssertNotNil(existingObjects)
                            XCTAssertEqual(existingObjects?.count, 1)
                            
@@ -864,8 +866,8 @@ class ImportTests: BaseTestDataTestCase {
                            errorExpectation.fulfill()
                            XCTAssertEqual(transaction.fetchCount(From<TestEntity1>()), 5)
                            
-                            XCTAssertNil(transaction.fetchOne(From<TestEntity1>(), Where(#keyPath(TestEntity1.testEntityID), isEqualTo: 106)))
-                            XCTAssertNil(transaction.fetchOne(From<TestEntity1>(), Where(#keyPath(TestEntity1.testEntityID), isEqualTo: 107)))
+                            XCTAssertNil(transaction.fetchOne(From<TestEntity1>(), Where<TestEntity1>(#keyPath(TestEntity1.testEntityID), isEqualTo: 106)))
+                            XCTAssertNil(transaction.fetchOne(From<TestEntity1>(), Where<TestEntity1>(#keyPath(TestEntity1.testEntityID), isEqualTo: 107)))
                        }
                        transaction.unsafeContext().reset()
                        self.checkExpectationsImmediately()
@@ -908,7 +910,7 @@ class ImportTests: BaseTestDataTestCase {
                            
                            errorExpectation.fulfill()
                            
-                            let object = transaction.fetchOne(From<TestEntity1>(), Where(#keyPath(TestEntity1.testEntityID), isEqualTo: 106))
+                            let object = transaction.fetchOne(From<TestEntity1>(), Where<TestEntity1>(#keyPath(TestEntity1.testEntityID), isEqualTo: 106))
                            XCTAssertNotNil(object)
                            XCTAssertEqual(object?.testEntityID, NSNumber(value: 106))
                            XCTAssertNil(object?.testBoolean)
@@ -951,7 +953,7 @@ class ImportTests: BaseTestDataTestCase {
                            errorExpectation.fulfill()
                            XCTAssertEqual(transaction.fetchCount(From<TestEntity1>()), 5)
                            
-                            let object = transaction.fetchOne(From<TestEntity1>(), Where(#keyPath(TestEntity1.testEntityID), isEqualTo: 105))
+                            let object = transaction.fetchOne(From<TestEntity1>(), Where<TestEntity1>(#keyPath(TestEntity1.testEntityID), isEqualTo: 105))
                            XCTAssertNotNil(object)
                            XCTAssertEqual(object?.testEntityID, NSNumber(value: 105))
                            XCTAssertEqual(object?.testBoolean, NSNumber(value: true))
@@ -961,7 +963,7 @@ class ImportTests: BaseTestDataTestCase {
                            XCTAssertEqual(object?.testData, ("nil:TestEntity1:5" as NSString).data(using: String.Encoding.utf8.rawValue)!)
                            XCTAssertEqual(object?.testDate, self.dateFormatter.date(from: "2000-01-05T00:00:00Z")!)
                            
-                            let existingObjects = transaction.fetchAll(From<TestEntity1>(), Where(#keyPath(TestEntity1.testEntityID), isEqualTo: 105))
+                            let existingObjects = transaction.fetchAll(From<TestEntity1>(), Where<TestEntity1>(#keyPath(TestEntity1.testEntityID), isEqualTo: 105))
                            XCTAssertNotNil(existingObjects)
                            XCTAssertEqual(existingObjects?.count, 1)
                            
@@ -1030,7 +1032,7 @@ class ImportTests: BaseTestDataTestCase {
                            XCTAssertEqual(object.testData, dictionary[(#keyPath(TestEntity1.testData))] as? Data)
                            XCTAssertEqual(object.testDate, dictionary[(#keyPath(TestEntity1.testDate))] as? Date)
                        }
-                        let existingObjects = transaction.fetchAll(From<TestEntity1>(), Where(#keyPath(TestEntity1.testEntityID), isEqualTo: 105))
+                        let existingObjects = transaction.fetchAll(From<TestEntity1>(), Where<TestEntity1>(#keyPath(TestEntity1.testEntityID), isEqualTo: 105))
                        XCTAssertNotNil(existingObjects)
                        XCTAssertEqual(existingObjects?.count, 1)
                        
--- a/CoreStoreTests/ListObserverTests.swift
+++ b/CoreStoreTests/ListObserverTests.swift
@@ -43,7 +43,7 @@ class ListObserverTests: BaseTestDataTestCase {
            let monitor = stack.monitorSectionedList(
                From<TestEntity1>(),
                SectionBy(#keyPath(TestEntity1.testBoolean)),
-                OrderBy(.ascending(#keyPath(TestEntity1.testBoolean)), .ascending(#keyPath(TestEntity1.testEntityID)))
+                OrderBy<TestEntity1>(.ascending(#keyPath(TestEntity1.testBoolean)), .ascending(#keyPath(TestEntity1.testEntityID)))
            )
            monitor.addObserver(observer)
            
@@ -54,7 +54,7 @@ class ListObserverTests: BaseTestDataTestCase {
            var events = 0
            
            let willChangeExpectation = self.expectation(
-                forNotification: "listMonitorWillChange:",
+                forNotification: NSNotification.Name(rawValue: "listMonitorWillChange:"),
                object: observer,
                handler: { (note) -> Bool in
                    
@@ -68,7 +68,7 @@ class ListObserverTests: BaseTestDataTestCase {
                }
            )
            let didInsertSectionExpectation = self.expectation(
-                forNotification: "listMonitor:didInsertSection:toSectionIndex:",
+                forNotification: NSNotification.Name(rawValue: "listMonitor:didInsertSection:toSectionIndex:"),
                object: observer,
                handler: { (note) -> Bool in
                    
@@ -88,7 +88,7 @@ class ListObserverTests: BaseTestDataTestCase {
                }
            )
            let didInsertObjectExpectation = self.expectation(
-                forNotification: "listMonitor:didInsertObject:toIndexPath:",
+                forNotification: NSNotification.Name(rawValue: "listMonitor:didInsertObject:toIndexPath:"),
                object: observer,
                handler: { (note) -> Bool in
                    
@@ -120,7 +120,7 @@ class ListObserverTests: BaseTestDataTestCase {
                }
            )
            let didChangeExpectation = self.expectation(
-                forNotification: "listMonitorDidChange:",
+                forNotification: NSNotification.Name(rawValue: "listMonitorDidChange:"),
                object: observer,
                handler: { (note) -> Bool in
                    
@@ -171,7 +171,7 @@ class ListObserverTests: BaseTestDataTestCase {
            let monitor = stack.monitorSectionedList(
                From<TestEntity1>(),
                SectionBy(#keyPath(TestEntity1.testBoolean)),
-                OrderBy(.ascending(#keyPath(TestEntity1.testBoolean)), .ascending(#keyPath(TestEntity1.testEntityID)))
+                OrderBy<TestEntity1>(.ascending(#keyPath(TestEntity1.testBoolean)), .ascending(#keyPath(TestEntity1.testEntityID)))
            )
            monitor.addObserver(observer)
            
@@ -185,7 +185,7 @@ class ListObserverTests: BaseTestDataTestCase {
            var events = 0
            
            let willChangeExpectation = self.expectation(
-                forNotification: "listMonitorWillChange:",
+                forNotification: NSNotification.Name(rawValue: "listMonitorWillChange:"),
                object: observer,
                handler: { (note) -> Bool in
                    
@@ -198,62 +198,60 @@ class ListObserverTests: BaseTestDataTestCase {
                    return events == 0
                }
            )
-            for _ in 1 ... 2 {
-                
-                let didUpdateObjectExpectation = self.expectation(
-                    forNotification: "listMonitor:didUpdateObject:atIndexPath:",
-                    object: observer,
-                    handler: { (note) -> Bool in
+            
+            let didUpdateObjectExpectation = self.expectation(
+                forNotification: NSNotification.Name(rawValue: "listMonitor:didUpdateObject:atIndexPath:"),
+                object: observer,
+                handler: { (note) -> Bool in
+                    
+                    XCTAssert(events == 1 || events == 2)
+                    
+                    let userInfo = note.userInfo
+                    XCTAssertNotNil(userInfo)
+                    XCTAssertEqual(
+                        Set(userInfo?.keys.map({ $0 as! String }) ?? []),
+                        ["indexPath", "object"]
+                    )
+                    
+                    let indexPath = userInfo?["indexPath"] as? NSIndexPath
+                    let object = userInfo?["object"] as? TestEntity1
+                    
+                    switch object?.testEntityID {
                        
-                        XCTAssert(events == 1 || events == 2)
+                    case NSNumber(value: 101)?:
+                        XCTAssertEqual(indexPath?.index(atPosition: 0), 1)
+                        XCTAssertEqual(indexPath?.index(atPosition: 1), 0)
                        
-                        let userInfo = note.userInfo
-                        XCTAssertNotNil(userInfo)
-                        XCTAssertEqual(
-                            Set(userInfo?.keys.map({ $0 as! String }) ?? []),
-                            ["indexPath", "object"]
-                        )
+                        XCTAssertEqual(object?.testBoolean, NSNumber(value: true))
+                        XCTAssertEqual(object?.testNumber, NSNumber(value: 11))
+                        XCTAssertEqual(object?.testDecimal, NSDecimalNumber(string: "11"))
+                        XCTAssertEqual(object?.testString, "nil:TestEntity1:11")
+                        XCTAssertEqual(object?.testData, ("nil:TestEntity1:11" as NSString).data(using: String.Encoding.utf8.rawValue)!)
+                        XCTAssertEqual(object?.testDate, self.dateFormatter.date(from: "2000-01-11T00:00:00Z")!)
                        
-                        let indexPath = userInfo?["indexPath"] as? NSIndexPath
-                        let object = userInfo?["object"] as? TestEntity1
+                    case NSNumber(value: 102)?:
+                        XCTAssertEqual(indexPath?.index(atPosition: 0), 0)
+                        XCTAssertEqual(indexPath?.index(atPosition: 1), 0)
                        
-                        switch object?.testEntityID {
-                            
-                        case NSNumber(value: 101)?:
-                            XCTAssertEqual(indexPath?.index(atPosition: 0), 1)
-                            XCTAssertEqual(indexPath?.index(atPosition: 1), 0)
-                            
-                            XCTAssertEqual(object?.testBoolean, NSNumber(value: true))
-                            XCTAssertEqual(object?.testNumber, NSNumber(value: 11))
-                            XCTAssertEqual(object?.testDecimal, NSDecimalNumber(string: "11"))
-                            XCTAssertEqual(object?.testString, "nil:TestEntity1:11")
-                            XCTAssertEqual(object?.testData, ("nil:TestEntity1:11" as NSString).data(using: String.Encoding.utf8.rawValue)!)
-                            XCTAssertEqual(object?.testDate, self.dateFormatter.date(from: "2000-01-11T00:00:00Z")!)
-                            
-                        case NSNumber(value: 102)?:
-                            XCTAssertEqual(indexPath?.index(atPosition: 0), 0)
-                            XCTAssertEqual(indexPath?.index(atPosition: 1), 0)
-                            
-                            XCTAssertEqual(object?.testBoolean, NSNumber(value: false))
-                            XCTAssertEqual(object?.testNumber, NSNumber(value: 22))
-                            XCTAssertEqual(object?.testDecimal, NSDecimalNumber(string: "22"))
-                            XCTAssertEqual(object?.testString, "nil:TestEntity1:22")
-                            XCTAssertEqual(object?.testData, ("nil:TestEntity1:22" as NSString).data(using: String.Encoding.utf8.rawValue)!)
-                            XCTAssertEqual(object?.testDate, self.dateFormatter.date(from: "2000-01-22T00:00:00Z")!)
-                            
-                        default:
-                            XCTFail()
-                        }
-                        defer {
-                            
-                            events += 1
-                        }
-                        return events == 1 || events == 2
+                        XCTAssertEqual(object?.testBoolean, NSNumber(value: false))
+                        XCTAssertEqual(object?.testNumber, NSNumber(value: 22))
+                        XCTAssertEqual(object?.testDecimal, NSDecimalNumber(string: "22"))
+                        XCTAssertEqual(object?.testString, "nil:TestEntity1:22")
+                        XCTAssertEqual(object?.testData, ("nil:TestEntity1:22" as NSString).data(using: String.Encoding.utf8.rawValue)!)
+                        XCTAssertEqual(object?.testDate, self.dateFormatter.date(from: "2000-01-22T00:00:00Z")!)
+                        
+                    default:
+                        XCTFail()
                    }
-                )
-            }
+                    defer {
+                        
+                        events += 1
+                    }
+                    return events == 1 || events == 2
+                }
+            )
            let didChangeExpectation = self.expectation(
-                forNotification: "listMonitorDidChange:",
+                forNotification: NSNotification.Name(rawValue: "listMonitorDidChange:"),
                object: observer,
                handler: { (note) -> Bool in
                    
@@ -272,7 +270,7 @@ class ListObserverTests: BaseTestDataTestCase {
                    
                    if let object = transaction.fetchOne(
                        From<TestEntity1>(),
-                        Where(#keyPath(TestEntity1.testEntityID), isEqualTo: 101)) {
+                        Where<TestEntity1>(#keyPath(TestEntity1.testEntityID), isEqualTo: 101)) {
                        
                        object.testNumber = NSNumber(value: 11)
                        object.testDecimal = NSDecimalNumber(string: "11")
@@ -286,7 +284,7 @@ class ListObserverTests: BaseTestDataTestCase {
                    }
                    if let object = transaction.fetchOne(
                        From<TestEntity1>(),
-                        Where(#keyPath(TestEntity1.testEntityID), isEqualTo: 102)) {
+                        Where<TestEntity1>(#keyPath(TestEntity1.testEntityID), isEqualTo: 102)) {
                        
                        object.testNumber = NSNumber(value: 22)
                        object.testDecimal = NSDecimalNumber(string: "22")
@@ -325,14 +323,14 @@ class ListObserverTests: BaseTestDataTestCase {
            let monitor = stack.monitorSectionedList(
                From<TestEntity1>(),
                SectionBy(#keyPath(TestEntity1.testBoolean)),
-                OrderBy(.ascending(#keyPath(TestEntity1.testBoolean)), .ascending(#keyPath(TestEntity1.testEntityID)))
+                OrderBy<TestEntity1>(.ascending(#keyPath(TestEntity1.testBoolean)), .ascending(#keyPath(TestEntity1.testEntityID)))
            )
            monitor.addObserver(observer)
            
            var events = 0
            
            let willChangeExpectation = self.expectation(
-                forNotification: "listMonitorWillChange:",
+                forNotification: NSNotification.Name(rawValue: "listMonitorWillChange:"),
                object: observer,
                handler: { (note) -> Bool in
                    
@@ -346,7 +344,7 @@ class ListObserverTests: BaseTestDataTestCase {
                }
            )
            let didMoveObjectExpectation = self.expectation(
-                forNotification: "listMonitor:didMoveObject:fromIndexPath:toIndexPath:",
+                forNotification: NSNotification.Name(rawValue: "listMonitor:didMoveObject:fromIndexPath:toIndexPath:"),
                object: observer,
                handler: { (note) -> Bool in
                    
@@ -379,7 +377,7 @@ class ListObserverTests: BaseTestDataTestCase {
                }
            )
            let didChangeExpectation = self.expectation(
-                forNotification: "listMonitorDidChange:",
+                forNotification: NSNotification.Name(rawValue: "listMonitorDidChange:"),
                object: observer,
                handler: { (note) -> Bool in
                    
@@ -398,7 +396,7 @@ class ListObserverTests: BaseTestDataTestCase {
                    
                    if let object = transaction.fetchOne(
                        From<TestEntity1>(),
-                        Where(#keyPath(TestEntity1.testEntityID), isEqualTo: 102)) {
+                        Where<TestEntity1>(#keyPath(TestEntity1.testEntityID), isEqualTo: 102)) {
                        
                        object.testBoolean = NSNumber(value: true)
                    }
@@ -433,14 +431,14 @@ class ListObserverTests: BaseTestDataTestCase {
            let monitor = stack.monitorSectionedList(
                From<TestEntity1>(),
                SectionBy(#keyPath(TestEntity1.testBoolean)),
-                OrderBy(.ascending(#keyPath(TestEntity1.testBoolean)), .ascending(#keyPath(TestEntity1.testEntityID)))
+                OrderBy<TestEntity1>(.ascending(#keyPath(TestEntity1.testBoolean)), .ascending(#keyPath(TestEntity1.testEntityID)))
            )
            monitor.addObserver(observer)
            
            var events = 0
            
            let willChangeExpectation = self.expectation(
-                forNotification: "listMonitorWillChange:",
+                forNotification: NSNotification.Name(rawValue: "listMonitorWillChange:"),
                object: observer,
                handler: { (note) -> Bool in
                    
@@ -453,40 +451,37 @@ class ListObserverTests: BaseTestDataTestCase {
                    return events == 0
                }
            )
-            for _ in 1 ... 2 {
-                
-                let didUpdateObjectExpectation = self.expectation(
-                    forNotification: "listMonitor:didDeleteObject:fromIndexPath:",
-                    object: observer,
-                    handler: { (note) -> Bool in
+            let didUpdateObjectExpectation = self.expectation(
+                forNotification: NSNotification.Name(rawValue: "listMonitor:didDeleteObject:fromIndexPath:"),
+                object: observer,
+                handler: { (note) -> Bool in
+                    
+                    XCTAssert(events == 1 || events == 2)
+                    
+                    let userInfo = note.userInfo
+                    XCTAssertNotNil(userInfo)
+                    XCTAssertEqual(
+                        Set(userInfo?.keys.map({ $0 as! String }) ?? []),
+                        ["indexPath", "object"]
+                    )
+                    
+                    let indexPath = userInfo?["indexPath"] as? NSIndexPath
+                    
+                    XCTAssertEqual(indexPath?.section, 0)
+                    XCTAssert(indexPath?.index(atPosition: 1) == 0 || indexPath?.index(atPosition: 1) == 1)
+                    
+                    let object = userInfo?["object"] as? TestEntity1
+                    XCTAssertEqual(object?.isDeleted, true)
+                    
+                    defer {
                        
-                        XCTAssert(events == 1 || events == 2)
-                        
-                        let userInfo = note.userInfo
-                        XCTAssertNotNil(userInfo)
-                        XCTAssertEqual(
-                            Set(userInfo?.keys.map({ $0 as! String }) ?? []),
-                            ["indexPath", "object"]
-                        )
-                        
-                        let indexPath = userInfo?["indexPath"] as? NSIndexPath
-                        
-                        XCTAssertEqual(indexPath?.section, 0)
-                        XCTAssert(indexPath?.index(atPosition: 1) == 0 || indexPath?.index(atPosition: 1) == 1)
-                        
-                        let object = userInfo?["object"] as? TestEntity1
-                        XCTAssertEqual(object?.isDeleted, true)
-                        
-                        defer {
-                            
-                            events += 1
-                        }
-                        return events == 1 || events == 2
+                        events += 1
                    }
-                )
-            }
+                    return events == 1 || events == 2
+                }
+            )
            let didDeleteSectionExpectation = self.expectation(
-                forNotification: "listMonitor:didDeleteSection:fromSectionIndex:",
+                forNotification: NSNotification.Name(rawValue: "listMonitor:didDeleteSection:fromSectionIndex:"),
                object: observer,
                handler: { (note) -> Bool in
                    
@@ -514,7 +509,7 @@ class ListObserverTests: BaseTestDataTestCase {
                }
            )
            let didChangeExpectation = self.expectation(
-                forNotification: "listMonitorDidChange:",
+                forNotification: NSNotification.Name(rawValue: "listMonitorDidChange:"),
                object: observer,
                handler: { (note) -> Bool in
                    
@@ -531,10 +526,11 @@ class ListObserverTests: BaseTestDataTestCase {
            stack.perform(
                asynchronous: { (transaction) -> Bool in
                    
-                    transaction.deleteAll(
+                    let count = transaction.deleteAll(
                        From<TestEntity1>(),
-                        Where(#keyPath(TestEntity1.testBoolean), isEqualTo: false)
+                        Where<TestEntity1>(#keyPath(TestEntity1.testBoolean), isEqualTo: false)
                    )
+                    XCTAssertEqual(count, 2)
                    return transaction.hasChanges
                },
                success: { (hasChanges) in
--- a/CoreStoreTests/ObjectObserverTests.swift
+++ b/CoreStoreTests/ObjectObserverTests.swift
@@ -43,7 +43,7 @@ class ObjectObserverTests: BaseTestDataTestCase {
            
            guard let object = stack.fetchOne(
                From<TestEntity1>(),
-                Where(#keyPath(TestEntity1.testEntityID), isEqualTo: 101)) else {
+                Where<TestEntity1>(#keyPath(TestEntity1.testEntityID), isEqualTo: 101)) else {
                    
                    XCTFail()
                    return
@@ -58,7 +58,7 @@ class ObjectObserverTests: BaseTestDataTestCase {
            var events = 0
            
            let willUpdateExpectation = self.expectation(
-                forNotification: "objectMonitor:willUpdateObject:",
+                forNotification: NSNotification.Name(rawValue: "objectMonitor:willUpdateObject:"),
                object: observer,
                handler: { (note) -> Bool in
                    
@@ -75,7 +75,7 @@ class ObjectObserverTests: BaseTestDataTestCase {
                }
            )
            let didUpdateExpectation = self.expectation(
-                forNotification: "objectMonitor:didUpdateObject:changedPersistentKeys:",
+                forNotification: NSNotification.Name(rawValue: "objectMonitor:didUpdateObject:changedPersistentKeys:"),
                object: observer,
                handler: { (note) -> Bool in
                    
@@ -140,7 +140,7 @@ class ObjectObserverTests: BaseTestDataTestCase {
            
            guard let object = stack.fetchOne(
                From<TestEntity1>(),
-                Where(#keyPath(TestEntity1.testEntityID), isEqualTo: 101)) else {
+                Where<TestEntity1>(#keyPath(TestEntity1.testEntityID), isEqualTo: 101)) else {
                    
                    XCTFail()
                    return
@@ -155,7 +155,7 @@ class ObjectObserverTests: BaseTestDataTestCase {
            var events = 0
            
            let didDeleteExpectation = self.expectation(
-                forNotification: "objectMonitor:didDeleteObject:",
+                forNotification: NSNotification.Name(rawValue: "objectMonitor:didDeleteObject:"),
                object: observer,
                handler: { (note) -> Bool in
                    
@@ -219,7 +219,7 @@ class TestObjectObserver: ObjectObserver {
        )
    }
    
-    func objectMonitor(_ monitor: ObjectMonitor<TestEntity1>, didUpdateObject object: TestEntity1, changedPersistentKeys: Set<KeyPath>) {
+    func objectMonitor(_ monitor: ObjectMonitor<TestEntity1>, didUpdateObject object: TestEntity1, changedPersistentKeys: Set<String>) {
        
        NotificationCenter.default.post(
            name: NSNotification.Name(rawValue: "objectMonitor:didUpdateObject:changedPersistentKeys:"),
--- a/CoreStoreTests/OrderByTests.swift
+++ b/CoreStoreTests/OrderByTests.swift
@@ -38,21 +38,21 @@ final class OrderByTests: XCTestCase {
        
        do {
            
-            let orderBy = OrderBy()
-            XCTAssertEqual(orderBy, OrderBy([NSSortDescriptor]()))
-            XCTAssertNotEqual(orderBy, OrderBy(NSSortDescriptor(key: "key", ascending: false)))
+            let orderBy = OrderBy<NSManagedObject>()
+            XCTAssertEqual(orderBy, OrderBy<NSManagedObject>([NSSortDescriptor]()))
+            XCTAssertNotEqual(orderBy, OrderBy<NSManagedObject>(NSSortDescriptor(key: "key", ascending: false)))
            XCTAssertTrue(orderBy.sortDescriptors.isEmpty)
        }
        do {
            
            let sortDescriptor = NSSortDescriptor(key: "key1", ascending: true)
-            let orderBy = OrderBy(sortDescriptor)
+            let orderBy = OrderBy<NSManagedObject>(sortDescriptor)
            XCTAssertEqual(orderBy, OrderBy(sortDescriptor))
-            XCTAssertEqual(orderBy, OrderBy(.ascending("key1")))
-            XCTAssertNotEqual(orderBy, OrderBy(.ascending("key2")))
-            XCTAssertNotEqual(orderBy, OrderBy(.descending("key1")))
-            XCTAssertNotEqual(orderBy, OrderBy(NSSortDescriptor(key: "key1", ascending: false)))
-            XCTAssertEqual(orderBy, OrderBy([sortDescriptor]))
+            XCTAssertEqual(orderBy, OrderBy<NSManagedObject>(.ascending("key1")))
+            XCTAssertNotEqual(orderBy, OrderBy<NSManagedObject>(.ascending("key2")))
+            XCTAssertNotEqual(orderBy, OrderBy<NSManagedObject>(.descending("key1")))
+            XCTAssertNotEqual(orderBy, OrderBy<NSManagedObject>(NSSortDescriptor(key: "key1", ascending: false)))
+            XCTAssertEqual(orderBy, OrderBy<NSManagedObject>([sortDescriptor]))
            XCTAssertEqual(orderBy.sortDescriptors, [sortDescriptor])
        }
        do {
@@ -61,76 +61,76 @@ final class OrderByTests: XCTestCase {
                NSSortDescriptor(key: "key1", ascending: true),
                NSSortDescriptor(key: "key2", ascending: false)
            ]
-            let orderBy = OrderBy(sortDescriptors)
-            XCTAssertEqual(orderBy, OrderBy(sortDescriptors))
-            XCTAssertEqual(orderBy, OrderBy(.ascending("key1"), .descending("key2")))
+            let orderBy = OrderBy<NSManagedObject>(sortDescriptors)
+            XCTAssertEqual(orderBy, OrderBy<NSManagedObject>(sortDescriptors))
+            XCTAssertEqual(orderBy, OrderBy<NSManagedObject>(.ascending("key1"), .descending("key2")))
            XCTAssertNotEqual(
                orderBy,
-                OrderBy(
+                OrderBy<NSManagedObject>(
                    [
                        NSSortDescriptor(key: "key1", ascending: false),
                        NSSortDescriptor(key: "key2", ascending: false)
                    ]
                )
            )
-            XCTAssertNotEqual(orderBy, OrderBy(.ascending("key1"), .ascending("key2")))
-            XCTAssertNotEqual(orderBy, OrderBy(.ascending("key1"), .descending("key3")))
+            XCTAssertNotEqual(orderBy, OrderBy<NSManagedObject>(.ascending("key1"), .ascending("key2")))
+            XCTAssertNotEqual(orderBy, OrderBy<NSManagedObject>(.ascending("key1"), .descending("key3")))
            XCTAssertEqual(orderBy.sortDescriptors, sortDescriptors)
        }
        do {
            
-            let orderBy = OrderBy(.ascending("key1"))
+            let orderBy = OrderBy<NSManagedObject>(.ascending("key1"))
            let sortDescriptor = NSSortDescriptor(key: "key1", ascending: true)
-            XCTAssertEqual(orderBy, OrderBy(sortDescriptor))
-            XCTAssertEqual(orderBy, OrderBy(.ascending("key1")))
-            XCTAssertNotEqual(orderBy, OrderBy(.descending("key1")))
-            XCTAssertNotEqual(orderBy, OrderBy(.ascending("key2")))
-            XCTAssertEqual(orderBy, OrderBy([sortDescriptor]))
+            XCTAssertEqual(orderBy, OrderBy<NSManagedObject>(sortDescriptor))
+            XCTAssertEqual(orderBy, OrderBy<NSManagedObject>(.ascending("key1")))
+            XCTAssertNotEqual(orderBy, OrderBy<NSManagedObject>(.descending("key1")))
+            XCTAssertNotEqual(orderBy, OrderBy<NSManagedObject>(.ascending("key2")))
+            XCTAssertEqual(orderBy, OrderBy<NSManagedObject>([sortDescriptor]))
            XCTAssertEqual(orderBy.sortDescriptors, [sortDescriptor])
        }
        do {
            
-            let orderBy = OrderBy(.ascending("key1"), .descending("key2"))
+            let orderBy = OrderBy<NSManagedObject>(.ascending("key1"), .descending("key2"))
            let sortDescriptors = [
                NSSortDescriptor(key: "key1", ascending: true),
                NSSortDescriptor(key: "key2", ascending: false)
            ]
-            XCTAssertEqual(orderBy, OrderBy(sortDescriptors))
-            XCTAssertEqual(orderBy, OrderBy(.ascending("key1"), .descending("key2")))
+            XCTAssertEqual(orderBy, OrderBy<NSManagedObject>(sortDescriptors))
+            XCTAssertEqual(orderBy, OrderBy<NSManagedObject>(.ascending("key1"), .descending("key2")))
            XCTAssertNotEqual(
                orderBy,
-                OrderBy(
+                OrderBy<NSManagedObject>(
                    [
                        NSSortDescriptor(key: "key1", ascending: false),
                        NSSortDescriptor(key: "key2", ascending: false)
                    ]
                )
            )
-            XCTAssertNotEqual(orderBy, OrderBy(.ascending("key1"), .ascending("key2")))
-            XCTAssertNotEqual(orderBy, OrderBy(.ascending("key1"), .descending("key3")))
+            XCTAssertNotEqual(orderBy, OrderBy<NSManagedObject>(.ascending("key1"), .ascending("key2")))
+            XCTAssertNotEqual(orderBy, OrderBy<NSManagedObject>(.ascending("key1"), .descending("key3")))
            XCTAssertEqual(orderBy.sortDescriptors, sortDescriptors)
        }
        do {
            
-            let sortKeys: [SortKey] = [.ascending("key1"), .descending("key2")]
-            let orderBy = OrderBy(sortKeys)
+            let sortKeys: [OrderBy<NSManagedObject>.SortKey] = [.ascending("key1"), .descending("key2")]
+            let orderBy = OrderBy<NSManagedObject>(sortKeys)
            let sortDescriptors = [
                NSSortDescriptor(key: "key1", ascending: true),
                NSSortDescriptor(key: "key2", ascending: false)
            ]
-            XCTAssertEqual(orderBy, OrderBy(sortDescriptors))
-            XCTAssertEqual(orderBy, OrderBy(.ascending("key1"), .descending("key2")))
+            XCTAssertEqual(orderBy, OrderBy<NSManagedObject>(sortDescriptors))
+            XCTAssertEqual(orderBy, OrderBy<NSManagedObject>(.ascending("key1"), .descending("key2")))
            XCTAssertNotEqual(
                orderBy,
-                OrderBy(
+                OrderBy<NSManagedObject>(
                    [
                        NSSortDescriptor(key: "key1", ascending: false),
                        NSSortDescriptor(key: "key2", ascending: false)
                    ]
                )
            )
-            XCTAssertNotEqual(orderBy, OrderBy(.ascending("key1"), .ascending("key2")))
-            XCTAssertNotEqual(orderBy, OrderBy(.ascending("key1"), .descending("key3")))
+            XCTAssertNotEqual(orderBy, OrderBy<NSManagedObject>(.ascending("key1"), .ascending("key2")))
+            XCTAssertNotEqual(orderBy, OrderBy<NSManagedObject>(.ascending("key1"), .descending("key3")))
            XCTAssertEqual(orderBy.sortDescriptors, sortDescriptors)
        }
    }
@@ -138,15 +138,15 @@ final class OrderByTests: XCTestCase {
    @objc
    dynamic func test_ThatOrderByClauseOperations_ComputeCorrectly() {
        
-        let orderBy1 = OrderBy(.ascending("key1"))
-        let orderBy2 = OrderBy(.descending("key2"))
-        let orderBy3 = OrderBy(.ascending("key3"))
+        let orderBy1 = OrderBy<NSManagedObject>(.ascending("key1"))
+        let orderBy2 = OrderBy<NSManagedObject>(.descending("key2"))
+        let orderBy3 = OrderBy<NSManagedObject>(.ascending("key3"))
        
        do {
            
            let plusOrderBy = orderBy1 + orderBy2 + orderBy3
-            XCTAssertEqual(plusOrderBy, OrderBy(.ascending("key1"), .descending("key2"), .ascending("key3")))
-            XCTAssertEqual(plusOrderBy, OrderBy(.ascending("key1")) + OrderBy(.descending("key2"), .ascending("key3")))
+            XCTAssertEqual(plusOrderBy, OrderBy<NSManagedObject>(.ascending("key1"), .descending("key2"), .ascending("key3")))
+            XCTAssertEqual(plusOrderBy, OrderBy<NSManagedObject>(.ascending("key1")) + OrderBy<NSManagedObject>(.descending("key2"), .ascending("key3")))
            XCTAssertNotEqual(plusOrderBy, orderBy1 + orderBy3 + orderBy2)
            XCTAssertNotEqual(plusOrderBy, orderBy2 + orderBy1 + orderBy3)
            XCTAssertNotEqual(plusOrderBy, orderBy2 + orderBy3 + orderBy1)
@@ -158,14 +158,14 @@ final class OrderByTests: XCTestCase {
            
            var plusOrderBy = orderBy1
            plusOrderBy += orderBy2
-            XCTAssertEqual(plusOrderBy, OrderBy(.ascending("key1"), .descending("key2")))
-            XCTAssertEqual(plusOrderBy, OrderBy(.ascending("key1")) + OrderBy(.descending("key2")))
+            XCTAssertEqual(plusOrderBy, OrderBy<NSManagedObject>(.ascending("key1"), .descending("key2")))
+            XCTAssertEqual(plusOrderBy, OrderBy<NSManagedObject>(.ascending("key1")) + OrderBy<NSManagedObject>(.descending("key2")))
            XCTAssertNotEqual(plusOrderBy, orderBy2 + orderBy1)
            XCTAssertEqual(plusOrderBy.sortDescriptors, orderBy1.sortDescriptors + orderBy2.sortDescriptors)
            
            plusOrderBy += orderBy3
-            XCTAssertEqual(plusOrderBy, OrderBy(.ascending("key1"), .descending("key2"), .ascending("key3")))
-            XCTAssertEqual(plusOrderBy, OrderBy(.ascending("key1"), .descending("key2")) + OrderBy(.ascending("key3")))
+            XCTAssertEqual(plusOrderBy, OrderBy<NSManagedObject>(.ascending("key1"), .descending("key2"), .ascending("key3")))
+            XCTAssertEqual(plusOrderBy, OrderBy<NSManagedObject>(.ascending("key1"), .descending("key2")) + OrderBy<NSManagedObject>(.ascending("key3")))
            XCTAssertNotEqual(plusOrderBy, orderBy1 + orderBy3 + orderBy2)
            XCTAssertNotEqual(plusOrderBy, orderBy2 + orderBy1 + orderBy3)
            XCTAssertNotEqual(plusOrderBy, orderBy2 + orderBy3 + orderBy1)
@@ -178,7 +178,7 @@ final class OrderByTests: XCTestCase {
    @objc
    dynamic func test_ThatOrderByClauses_ApplyToFetchRequestsCorrectly() {
        
-        let orderBy = OrderBy(.ascending("key"))
+        let orderBy = OrderBy<NSManagedObject>(.ascending("key"))
        let request = CoreStoreFetchRequest()
        orderBy.applyToFetchRequest(request)
        XCTAssertNotNil(request.sortDescriptors)
--- a/CoreStoreTests/QueryTests.swift
+++ b/CoreStoreTests/QueryTests.swift
--- a/CoreStoreTests/SectionByTests.swift
+++ b/CoreStoreTests/SectionByTests.swift
@@ -39,13 +39,13 @@ final class SectionByTests: XCTestCase {
        
        do {
            
-            let sectionBy = SectionBy("key")
+            let sectionBy = SectionBy<NSManagedObject>("key")
            XCTAssertEqual(sectionBy.sectionKeyPath, "key")
            XCTAssertEqual(sectionBy.sectionIndexTransformer("key"), "key")
        }
        do {
            
-            let sectionBy = SectionBy("key") { $0.flatMap { "\($0):suffix" } }
+            let sectionBy = SectionBy<NSManagedObject>("key") { $0.flatMap { "\($0):suffix" } }
            XCTAssertEqual(sectionBy.sectionKeyPath, "key")
            XCTAssertEqual(sectionBy.sectionIndexTransformer("key"), "key:suffix")
            XCTAssertNil(sectionBy.sectionIndexTransformer(nil))
--- a/CoreStoreTests/SelectTests.swift
+++ b/CoreStoreTests/SelectTests.swift
@@ -38,7 +38,7 @@ final class SelectTests: XCTestCase {
        
        do {
            
-            let term: SelectTerm = "attribute"
+            let term: SelectTerm<NSManagedObject> = "attribute"
            XCTAssertEqual(term, SelectTerm.attribute("attribute"))
            XCTAssertNotEqual(term, SelectTerm.attribute("attribute2"))
            XCTAssertNotEqual(term, SelectTerm.average("attribute"))
@@ -58,7 +58,7 @@ final class SelectTests: XCTestCase {
        }
        do {
            
-            let term = SelectTerm.attribute("attribute")
+            let term = SelectTerm<NSManagedObject>.attribute("attribute")
            XCTAssertNotEqual(term, SelectTerm.attribute("attribute2"))
            XCTAssertNotEqual(term, SelectTerm.average("attribute"))
            XCTAssertNotEqual(term, SelectTerm.count("attribute"))
@@ -82,7 +82,7 @@ final class SelectTests: XCTestCase {
        
        do {
            
-            let term = SelectTerm.average("attribute")
+            let term = SelectTerm<NSManagedObject>.average("attribute")
            XCTAssertEqual(term, SelectTerm.average("attribute"))
            XCTAssertNotEqual(term, SelectTerm.average("attribute", as: "alias"))
            XCTAssertNotEqual(term, SelectTerm.average("attribute2"))
@@ -106,7 +106,7 @@ final class SelectTests: XCTestCase {
        }
        do {
            
-            let term = SelectTerm.average("attribute", as: "alias")
+            let term = SelectTerm<NSManagedObject>.average("attribute", as: "alias")
            XCTAssertEqual(term, SelectTerm.average("attribute", as: "alias"))
            XCTAssertNotEqual(term, SelectTerm.average("attribute", as: "alias2"))
            XCTAssertNotEqual(term, SelectTerm.average("attribute2"))
@@ -135,7 +135,7 @@ final class SelectTests: XCTestCase {
        
        do {
            
-            let term = SelectTerm.count("attribute")
+            let term = SelectTerm<NSManagedObject>.count("attribute")
            XCTAssertEqual(term, SelectTerm.count("attribute"))
            XCTAssertNotEqual(term, SelectTerm.count("attribute", as: "alias"))
            XCTAssertNotEqual(term, SelectTerm.count("attribute2"))
@@ -159,7 +159,7 @@ final class SelectTests: XCTestCase {
        }
        do {
            
-            let term = SelectTerm.count("attribute", as: "alias")
+            let term = SelectTerm<NSManagedObject>.count("attribute", as: "alias")
            XCTAssertEqual(term, SelectTerm.count("attribute", as: "alias"))
            XCTAssertNotEqual(term, SelectTerm.count("attribute", as: "alias2"))
            XCTAssertNotEqual(term, SelectTerm.count("attribute2"))
@@ -188,7 +188,7 @@ final class SelectTests: XCTestCase {
        
        do {
            
-            let term = SelectTerm.maximum("attribute")
+            let term = SelectTerm<NSManagedObject>.maximum("attribute")
            XCTAssertEqual(term, SelectTerm.maximum("attribute"))
            XCTAssertNotEqual(term, SelectTerm.maximum("attribute", as: "alias"))
            XCTAssertNotEqual(term, SelectTerm.maximum("attribute2"))
@@ -212,7 +212,7 @@ final class SelectTests: XCTestCase {
        }
        do {
            
-            let term = SelectTerm.maximum("attribute", as: "alias")
+            let term = SelectTerm<NSManagedObject>.maximum("attribute", as: "alias")
            XCTAssertEqual(term, SelectTerm.maximum("attribute", as: "alias"))
            XCTAssertNotEqual(term, SelectTerm.maximum("attribute", as: "alias2"))
            XCTAssertNotEqual(term, SelectTerm.maximum("attribute2"))
@@ -241,7 +241,7 @@ final class SelectTests: XCTestCase {
        
        do {
            
-            let term = SelectTerm.minimum("attribute")
+            let term = SelectTerm<NSManagedObject>.minimum("attribute")
            XCTAssertEqual(term, SelectTerm.minimum("attribute"))
            XCTAssertNotEqual(term, SelectTerm.minimum("attribute", as: "alias"))
            XCTAssertNotEqual(term, SelectTerm.minimum("attribute2"))
@@ -265,7 +265,7 @@ final class SelectTests: XCTestCase {
        }
        do {
            
-            let term = SelectTerm.minimum("attribute", as: "alias")
+            let term = SelectTerm<NSManagedObject>.minimum("attribute", as: "alias")
            XCTAssertEqual(term, SelectTerm.minimum("attribute", as: "alias"))
            XCTAssertNotEqual(term, SelectTerm.minimum("attribute", as: "alias2"))
            XCTAssertNotEqual(term, SelectTerm.minimum("attribute2"))
@@ -294,7 +294,7 @@ final class SelectTests: XCTestCase {
        
        do {
            
-            let term = SelectTerm.sum("attribute")
+            let term = SelectTerm<NSManagedObject>.sum("attribute")
            XCTAssertEqual(term, SelectTerm.sum("attribute"))
            XCTAssertNotEqual(term, SelectTerm.sum("attribute", as: "alias"))
            XCTAssertNotEqual(term, SelectTerm.sum("attribute2"))
@@ -318,7 +318,7 @@ final class SelectTests: XCTestCase {
        }
        do {
            
-            let term = SelectTerm.sum("attribute", as: "alias")
+            let term = SelectTerm<NSManagedObject>.sum("attribute", as: "alias")
            XCTAssertEqual(term, SelectTerm.sum("attribute", as: "alias"))
            XCTAssertNotEqual(term, SelectTerm.sum("attribute", as: "alias2"))
            XCTAssertNotEqual(term, SelectTerm.sum("attribute2"))
@@ -347,7 +347,7 @@ final class SelectTests: XCTestCase {
        
        do {
            
-            let term = SelectTerm.objectID()
+            let term = SelectTerm<NSManagedObject>.objectID()
            XCTAssertEqual(term, SelectTerm.objectID())
            XCTAssertNotEqual(term, SelectTerm.objectID(as: "alias"))
            XCTAssertNotEqual(term, SelectTerm.attribute("attribute"))
@@ -368,7 +368,7 @@ final class SelectTests: XCTestCase {
        }
        do {
            
-            let term = SelectTerm.objectID(as: "alias")
+            let term = SelectTerm<NSManagedObject>.objectID(as: "alias")
            XCTAssertEqual(term, SelectTerm.objectID(as: "alias"))
            XCTAssertNotEqual(term, SelectTerm.objectID(as: "alias2"))
            XCTAssertNotEqual(term, SelectTerm.objectID())
@@ -393,12 +393,12 @@ final class SelectTests: XCTestCase {
    @objc
    dynamic func test_ThatSelectClauses_ConfigureCorrectly() {
        
-        let term1 = SelectTerm.attribute("attribute1")
-        let term2 = SelectTerm.attribute("attribute2")
-        let term3 = SelectTerm.attribute("attribute3")
+        let term1 = SelectTerm<NSManagedObject>.attribute("attribute1")
+        let term2 = SelectTerm<NSManagedObject>.attribute("attribute2")
+        let term3 = SelectTerm<NSManagedObject>.attribute("attribute3")
        do {
            
-            let select = Select<Int>(term1, term2, term3)
+            let select = Select<NSManagedObject, Int>(term1, term2, term3)
            XCTAssertEqual(select.selectTerms, [term1, term2, term3])
            XCTAssertNotEqual(select.selectTerms, [term1, term3, term2])
            XCTAssertNotEqual(select.selectTerms, [term2, term1, term3])
@@ -408,7 +408,7 @@ final class SelectTests: XCTestCase {
        }
        do {
            
-            let select = Select<Int>([term1, term2, term3])
+            let select = Select<NSManagedObject, Int>([term1, term2, term3])
            XCTAssertEqual(select.selectTerms, [term1, term2, term3])
            XCTAssertNotEqual(select.selectTerms, [term1, term3, term2])
            XCTAssertNotEqual(select.selectTerms, [term2, term1, term3])
--- a/CoreStoreTests/TransactionTests.swift
+++ b/CoreStoreTests/TransactionTests.swift
@@ -396,7 +396,7 @@ final class TransactionTests: BaseTestCase {
            let observer = TestListObserver()
            let monitor = stack.monitorList(
                From<TestEntity1>(),
-                OrderBy(.ascending("testEntityID"))
+                OrderBy<TestEntity1>(.ascending("testEntityID"))
            )
            monitor.addObserver(observer)
            
@@ -404,7 +404,7 @@ final class TransactionTests: BaseTestCase {
            
            var events = 0
            let willChangeExpectation = self.expectation(
-                forNotification: "listMonitorWillChange:",
+                forNotification: NSNotification.Name(rawValue: "listMonitorWillChange:"),
                object: observer,
                handler: { (note) -> Bool in
                    
@@ -418,7 +418,7 @@ final class TransactionTests: BaseTestCase {
                }
            )
            let didInsertObjectExpectation = self.expectation(
-                forNotification: "listMonitor:didInsertObject:toIndexPath:",
+                forNotification: NSNotification.Name(rawValue: "listMonitor:didInsertObject:toIndexPath:"),
                object: observer,
                handler: { (note) -> Bool in
                    
@@ -448,7 +448,7 @@ final class TransactionTests: BaseTestCase {
                }
            )
            let didChangeExpectation = self.expectation(
-                forNotification: "listMonitorDidChange:",
+                forNotification: NSNotification.Name(rawValue: "listMonitorDidChange:"),
                object: observer,
                handler: { (note) -> Bool in
                    
@@ -737,7 +737,7 @@ final class TransactionTests: BaseTestCase {
                        createDiscardExpectation.fulfill()
                        try transaction.cancel()
                    },
-                    success: {
+                    success: { _ in
                        
                        XCTFail()
                    },
@@ -795,7 +795,7 @@ final class TransactionTests: BaseTestCase {
                        
                        try transaction.cancel()
                    },
-                    success: {
+                    success: { _ in
                        
                        XCTFail()
                    },
@@ -828,7 +828,7 @@ final class TransactionTests: BaseTestCase {
                        
                        try transaction.cancel()
                    },
-                    success: {
+                    success: { _ in
                        
                        XCTFail()
                    },
--- a/CoreStoreTests/WhereTests.swift
+++ b/CoreStoreTests/WhereTests.swift
@@ -31,12 +31,12 @@ import CoreStore

 // MARK: - XCTAssertAllEqual

-private func XCTAssertAllEqual(_ whereClauses: Where...) {
+private func XCTAssertAllEqual<D>(_ whereClauses: Where<D>...) {
    
    XCTAssertAllEqual(whereClauses)
 }

-private func XCTAssertAllEqual(_ whereClauses: [Where]) {
+private func XCTAssertAllEqual<D>(_ whereClauses: [Where<D>]) {
    
    for i in whereClauses.indices {
        
@@ -52,56 +52,62 @@ private func XCTAssertAllEqual(_ whereClauses: [Where]) {

 final class WhereTests: XCTestCase {
    
+    @objc
+    dynamic func test_ThatDynamicModelKeyPaths_CanBeCreated() {
+        
+        XCTAssertEqual(String(keyPath: \TestEntity1.testEntityID), "testEntityID")
+    }
+    
    @objc
    dynamic func test_ThatWhereClauses_ConfigureCorrectly() {
        
        do {
            
-            let whereClause = Where()
-            XCTAssertEqual(whereClause, Where(true))
-            XCTAssertNotEqual(whereClause, Where(false))
+            let whereClause = Where<NSManagedObject>()
+            XCTAssertEqual(whereClause, Where<NSManagedObject>(true))
+            XCTAssertNotEqual(whereClause, Where<NSManagedObject>(false))
            XCTAssertEqual(whereClause.predicate, NSPredicate(value: true))
        }
        do {
            
-            let whereClause = Where(true)
-            XCTAssertEqual(whereClause, Where())
-            XCTAssertNotEqual(whereClause, Where(false))
+            let whereClause = Where<NSManagedObject>(true)
+            XCTAssertEqual(whereClause, Where<NSManagedObject>())
+            XCTAssertNotEqual(whereClause, Where<NSManagedObject>(false))
            XCTAssertEqual(whereClause.predicate, NSPredicate(value: true))
        }
        do {
            
            let predicate = NSPredicate(format: "%K == %@", "key", "value")
-            let whereClause = Where(predicate)
-            XCTAssertEqual(whereClause, Where(predicate))
+            let whereClause = Where<NSManagedObject>(predicate)
+            XCTAssertEqual(whereClause, Where<NSManagedObject>(predicate))
            XCTAssertEqual(whereClause.predicate, predicate)
        }
        do {
            
-            let whereClause = Where("%K == %@", "key", "value")
+            let whereClause = Where<NSManagedObject>("%K == %@", "key", "value")
            let predicate = NSPredicate(format: "%K == %@", "key", "value")
-            XCTAssertEqual(whereClause, Where(predicate))
+            XCTAssertEqual(whereClause, Where<NSManagedObject>(predicate))
            XCTAssertEqual(whereClause.predicate, predicate)
        }
        do {
            
-            let whereClause = Where("%K == %@", argumentArray: ["key", "value"])
+            let whereClause = Where<NSManagedObject>("%K == %@", argumentArray: ["key", "value"])
            let predicate = NSPredicate(format: "%K == %@", "key", "value")
-            XCTAssertEqual(whereClause, Where(predicate))
+            XCTAssertEqual(whereClause, Where<NSManagedObject>(predicate))
            XCTAssertEqual(whereClause.predicate, predicate)
        }
        do {
            
-            let whereClause = Where("key", isEqualTo: "value")
+            let whereClause = Where<NSManagedObject>("key", isEqualTo: "value")
            let predicate = NSPredicate(format: "%K == %@", "key", "value")
-            XCTAssertEqual(whereClause, Where(predicate))
+            XCTAssertEqual(whereClause, Where<NSManagedObject>(predicate))
            XCTAssertEqual(whereClause.predicate, predicate)
        }
        do {
            
-            let whereClause = Where("key", isMemberOf: ["value1", "value2", "value3"])
+            let whereClause = Where<NSManagedObject>("key", isMemberOf: ["value1", "value2", "value3"])
            let predicate = NSPredicate(format: "%K IN %@", "key", ["value1", "value2", "value3"])
-            XCTAssertEqual(whereClause, Where(predicate))
+            XCTAssertEqual(whereClause, Where<NSManagedObject>(predicate))
            XCTAssertEqual(whereClause.predicate, predicate)
        }
    }
@@ -113,112 +119,112 @@ final class WhereTests: XCTestCase {
            
            let value: Int = 100
            XCTAssertAllEqual(
-                Where("%K == %d", "key", value),
-                Where("%K == %d", "key", value as AnyObject),
-                Where("%K == %d", "key", NSNumber(value: value)),
-                Where("%K == %@", "key", value),
-                Where("%K == %@", "key", value as AnyObject),
-                Where("%K == %@", "key", NSNumber(value: value)),
-                Where("key", isEqualTo: value),
-                Where("key", isEqualTo: NSNumber(value: value))
+                Where<NSManagedObject>("%K == %d", "key", value),
+                Where<NSManagedObject>("%K == %d", "key", value as AnyObject),
+                Where<NSManagedObject>("%K == %d", "key", NSNumber(value: value)),
+                Where<NSManagedObject>("%K == %@", "key", value),
+                Where<NSManagedObject>("%K == %@", "key", value as AnyObject),
+                Where<NSManagedObject>("%K == %@", "key", NSNumber(value: value)),
+                Where<NSManagedObject>("key", isEqualTo: value),
+                Where<NSManagedObject>("key", isEqualTo: NSNumber(value: value))
            )
        }
        do {
            
            let value = NSNumber(value: 100)
            XCTAssertAllEqual(
-                Where("%K == %d", "key", value),
-                Where("%K == %d", "key", value as AnyObject),
-                Where("%K == %d", "key", value.intValue),
-                Where("%K == %@", "key", value),
-                Where("%K == %@", "key", value as AnyObject),
-                Where("%K == %@", "key", value.intValue),
-                Where("key", isEqualTo: value),
-                Where("key", isEqualTo: value.intValue)
+                Where<NSManagedObject>("%K == %d", "key", value),
+                Where<NSManagedObject>("%K == %d", "key", value as AnyObject),
+                Where<NSManagedObject>("%K == %d", "key", value.intValue),
+                Where<NSManagedObject>("%K == %@", "key", value),
+                Where<NSManagedObject>("%K == %@", "key", value as AnyObject),
+                Where<NSManagedObject>("%K == %@", "key", value.intValue),
+                Where<NSManagedObject>("key", isEqualTo: value),
+                Where<NSManagedObject>("key", isEqualTo: value.intValue)
            )
        }
        do {
            
            let value: Int64 = Int64.max
            XCTAssertAllEqual(
-                Where("%K == %d", "key", value),
-                Where("%K == %d", "key", value as AnyObject),
-                Where("%K == %d", "key", NSNumber(value: value)),
-                Where("%K == %@", "key", value),
-                Where("%K == %@", "key", value as AnyObject),
-                Where("%K == %@", "key", NSNumber(value: value)),
-                Where("key", isEqualTo: value),
-                Where("key", isEqualTo: NSNumber(value: value))
+                Where<NSManagedObject>("%K == %d", "key", value),
+                Where<NSManagedObject>("%K == %d", "key", value as AnyObject),
+                Where<NSManagedObject>("%K == %d", "key", NSNumber(value: value)),
+                Where<NSManagedObject>("%K == %@", "key", value),
+                Where<NSManagedObject>("%K == %@", "key", value as AnyObject),
+                Where<NSManagedObject>("%K == %@", "key", NSNumber(value: value)),
+                Where<NSManagedObject>("key", isEqualTo: value),
+                Where<NSManagedObject>("key", isEqualTo: NSNumber(value: value))
            )
        }
        do {
            
            let value = NSNumber(value: Int64.max)
            XCTAssertAllEqual(
-                Where("%K == %d", "key", value),
-                Where("%K == %d", "key", value as AnyObject),
-                Where("%K == %d", "key", value.int64Value),
-                Where("%K == %@", "key", value),
-                Where("%K == %@", "key", value as AnyObject),
-                Where("%K == %@", "key", value.int64Value),
-                Where("key", isEqualTo: value),
-                Where("key", isEqualTo: value.int64Value)
+                Where<NSManagedObject>("%K == %d", "key", value),
+                Where<NSManagedObject>("%K == %d", "key", value as AnyObject),
+                Where<NSManagedObject>("%K == %d", "key", value.int64Value),
+                Where<NSManagedObject>("%K == %@", "key", value),
+                Where<NSManagedObject>("%K == %@", "key", value as AnyObject),
+                Where<NSManagedObject>("%K == %@", "key", value.int64Value),
+                Where<NSManagedObject>("key", isEqualTo: value),
+                Where<NSManagedObject>("key", isEqualTo: value.int64Value)
            )
        }
        do {
            
            let value: String = "value"
            XCTAssertAllEqual(
-                Where("%K == %s", "key", value),
-                Where("%K == %s", "key", value as AnyObject),
-                Where("%K == %s", "key", NSString(string: value)),
-                Where("%K == %@", "key", value),
-                Where("%K == %@", "key", value as AnyObject),
-                Where("%K == %@", "key", NSString(string: value)),
-                Where("key", isEqualTo: value),
-                Where("key", isEqualTo: value as NSString),
-                Where("key", isEqualTo: NSString(string: value))
+                Where<NSManagedObject>("%K == %s", "key", value),
+                Where<NSManagedObject>("%K == %s", "key", value as AnyObject),
+                Where<NSManagedObject>("%K == %s", "key", NSString(string: value)),
+                Where<NSManagedObject>("%K == %@", "key", value),
+                Where<NSManagedObject>("%K == %@", "key", value as AnyObject),
+                Where<NSManagedObject>("%K == %@", "key", NSString(string: value)),
+                Where<NSManagedObject>("key", isEqualTo: value),
+                Where<NSManagedObject>("key", isEqualTo: value as NSString),
+                Where<NSManagedObject>("key", isEqualTo: NSString(string: value))
            )
        }
        do {
            
            let value = NSString(string: "value")
            XCTAssertAllEqual(
-                Where("%K == %s", "key", value),
-                Where("%K == %s", "key", value as String),
-                Where("%K == %s", "key", value as String as AnyObject),
-                Where("%K == %@", "key", value),
-                Where("%K == %@", "key", value as String),
-                Where("%K == %@", "key", value as String as AnyObject),
-                Where("key", isEqualTo: value),
-                Where("key", isEqualTo: value as String),
-                Where("key", isEqualTo: value as String as NSString)
+                Where<NSManagedObject>("%K == %s", "key", value),
+                Where<NSManagedObject>("%K == %s", "key", value as String),
+                Where<NSManagedObject>("%K == %s", "key", value as String as AnyObject),
+                Where<NSManagedObject>("%K == %@", "key", value),
+                Where<NSManagedObject>("%K == %@", "key", value as String),
+                Where<NSManagedObject>("%K == %@", "key", value as String as AnyObject),
+                Where<NSManagedObject>("key", isEqualTo: value),
+                Where<NSManagedObject>("key", isEqualTo: value as String),
+                Where<NSManagedObject>("key", isEqualTo: value as String as NSString)
            )
        }
        do {
            
            let value: [Int] = [100, 200]
            XCTAssertAllEqual(
-                Where("%K IN %@", "key", value),
-                Where("%K IN %@", "key", value as AnyObject),
-                Where("%K IN %@", "key", value as [AnyObject]),
-                Where("%K IN %@", "key", value as NSArray),
-                Where("%K IN %@", "key", NSArray(array: value)),
-                Where("%K IN %@", "key", value as AnyObject as! NSArray),
-                Where("key", isMemberOf: value)
+                Where<NSManagedObject>("%K IN %@", "key", value),
+                Where<NSManagedObject>("%K IN %@", "key", value as AnyObject),
+                Where<NSManagedObject>("%K IN %@", "key", value as [AnyObject]),
+                Where<NSManagedObject>("%K IN %@", "key", value as NSArray),
+                Where<NSManagedObject>("%K IN %@", "key", NSArray(array: value)),
+                Where<NSManagedObject>("%K IN %@", "key", value as AnyObject as! NSArray),
+                Where<NSManagedObject>("key", isMemberOf: value)
            )
        }
        do {
            
            let value: [Int64] = [Int64.min, 100, Int64.max]
            XCTAssertAllEqual(
-                Where("%K IN %@", "key", value),
-                Where("%K IN %@", "key", value as AnyObject),
-                Where("%K IN %@", "key", value as [AnyObject]),
-                Where("%K IN %@", "key", value as NSArray),
-                Where("%K IN %@", "key", NSArray(array: value)),
-                Where("%K IN %@", "key", value as AnyObject as! NSArray),
-                Where("key", isMemberOf: value)
+                Where<NSManagedObject>("%K IN %@", "key", value),
+                Where<NSManagedObject>("%K IN %@", "key", value as AnyObject),
+                Where<NSManagedObject>("%K IN %@", "key", value as [AnyObject]),
+                Where<NSManagedObject>("%K IN %@", "key", value as NSArray),
+                Where<NSManagedObject>("%K IN %@", "key", NSArray(array: value)),
+                Where<NSManagedObject>("%K IN %@", "key", value as AnyObject as! NSArray),
+                Where<NSManagedObject>("key", isMemberOf: value)
            )
        }
    }
@@ -226,9 +232,9 @@ final class WhereTests: XCTestCase {
    @objc
    dynamic func test_ThatWhereClauseOperations_ComputeCorrectly() {
        
-        let whereClause1 = Where("key1", isEqualTo: "value1")
-        let whereClause2 = Where("key2", isEqualTo: "value2")
-        let whereClause3 = Where("key3", isEqualTo: "value3")
+        let whereClause1 = Where<NSManagedObject>("key1", isEqualTo: "value1")
+        let whereClause2 = Where<NSManagedObject>("key2", isEqualTo: "value2")
+        let whereClause3 = Where<NSManagedObject>("key3", isEqualTo: "value3")
        
        do {
            
@@ -256,6 +262,21 @@ final class WhereTests: XCTestCase {
            XCTAssertEqual(andWhere.predicate, andPredicate)
            XCTAssertEqual(andWhere, whereClause1 && whereClause2 && whereClause3)
        }
+        do {
+            
+            let andWhere = whereClause1 && whereClause2 && whereClause3
+            let noneWhere: Where<NSManagedObject>? = nil
+            let someWhere: Where<NSManagedObject>? = Where<NSManagedObject>("key4", isEqualTo: "value4")
+
+            
+            let finalNoneWhere = andWhere &&? noneWhere
+            let finalSomeWhere = andWhere &&? someWhere
+            let unwrappedFinalSomeWhere = andWhere && someWhere!
+
+        
+            XCTAssertEqual(andWhere.predicate, finalNoneWhere.predicate)
+            XCTAssertEqual(finalSomeWhere.predicate, unwrappedFinalSomeWhere.predicate)
+        }
        do {
            
            let orWhere = whereClause1 || whereClause2 || whereClause3
@@ -272,12 +293,27 @@ final class WhereTests: XCTestCase {
            XCTAssertEqual(orWhere.predicate, orPredicate)
            XCTAssertEqual(orWhere, whereClause1 || whereClause2 || whereClause3)
        }
+        do {
+            
+            let orWhere = whereClause1 || whereClause2 || whereClause3
+            let noneWhere: Where<NSManagedObject>? = nil
+            let someWhere: Where<NSManagedObject>? = Where<NSManagedObject>("key4", isEqualTo: "value4")
+            
+            
+            let finalNoneWhere = orWhere &&? noneWhere
+            let finalSomeWhere = orWhere &&? someWhere
+            let unwrappedFinalSomeWhere = orWhere && someWhere!
+            
+            XCTAssertEqual(orWhere.predicate, finalNoneWhere.predicate)
+            XCTAssertEqual(finalSomeWhere.predicate, unwrappedFinalSomeWhere.predicate)
+        }
+
    }
    
    @objc
    dynamic func test_ThatWhereClauses_ApplyToFetchRequestsCorrectly() {
        
-        let whereClause = Where("key", isEqualTo: "value")
+        let whereClause = Where<NSManagedObject>("key", isEqualTo: "value")
        let request = CoreStoreFetchRequest()
        whereClause.applyToFetchRequest(request)
        XCTAssertNotNil(request.predicate)
--- a/README.md
+++ b/README.md
@@ -18,35 +18,35 @@ Unleashing the real power of Core Data with the elegance and safety of Swift
 <br />
 </p>

-* **Swift 3.1:** iOS 8+ / macOS 10.10+ / watchOS 2.0+ / tvOS 9.0+
+* **Swift 4.0:** iOS 8+ / macOS 10.10+ / watchOS 2.0+ / tvOS 9.0+
+* Other Swift versions: [Swift 3.2(version 4.2.3)](https://github.com/JohnEstropia/CoreStore/tree/4.2.3)

-Upgrading from CoreStore 3.x to 4.x? Check out the [new features](#features) and make sure to read the [Migration guide](#upgrading-from-3xx-to-4xx).
+Upgrading from CoreStore 4.2 (Swift 3.2) to 5.0 (Swift 4.0)? Check out the [new features](#features) and make sure to read the [Change logs](https://github.com/JohnEstropia/CoreStore/releases).

 CoreStore is now part of the [Swift Source Compatibility projects](https://swift.org/source-compatibility/#current-list-of-projects).


 ## Why use CoreStore?
-CoreStore is the answer to the [challenges](http://inessential.com/2010/02/26/on_switching_away_from_core_data) [of](http://bsktapp.com/blog/why-is-realm-great-and-why-are-we-not-using-it/) [using](https://www.quora.com/Why-would-you-use-Realm-over-Core-Data) [Core](http://sebastiandobrincu.com/blog/5-reasons-why-you-should-choose-realm-over-coredata) [Data](https://medium.com/the-way-north/ditching-core-data-865c1bb5564c#.a5h8ou6ri). 

 CoreStore was (and is) heavily shaped by real-world needs of developing data-dependent apps. It enforces safe and convenient Core Data usage while letting you take advantage of the industry's encouraged best practices.

 ### Features

- **Tight design around Swift’s code elegance and type safety.** CoreStore fully utilizes Swift's community-driven language features.
- **Safer concurrency architecture.** CoreStore makes it hard to fall into common concurrency mistakes. The main `NSManagedObjectContext` is strictly read-only, while all updates are done through serial *transactions*. *(See [Saving and processing transactions](#saving-and-processing-transactions))*
- **Clean fetching and querying API.** Fetching objects is easy, but querying for raw aggregates (`min`, `max`, etc.) and raw property values is now just as convenient. *(See [Fetching and querying](#fetching-and-querying))*
- **Type-safe, easy to configure observers.** You don't have to deal with the burden of setting up `NSFetchedResultsController`s and KVO. As an added bonus, `ListMonitor`s and `ObjectMonitor`s can have multiple observers. This means you can have multiple view controllers efficiently share a single resource! *(See [Observing changes and notifications](#observing-changes-and-notifications))*
- **Efficient importing utilities.** Map your entities once with their corresponding import source (JSON for example), and importing from *transactions* becomes elegant. Uniquing is also done with an efficient find-and-replace algorithm. *(See [Importing data](#importing-data))*
- ⭐️ **New in 4.0: Say goodbye to *.xcdatamodeld* files!** The new `CoreStoreObject` is *the* replacement to `NSManagedObject`. `CoreStoreObject` subclasses can declare type-safe properties all in Swift code, no need to maintain separate resource files for the models. As bonus, these special properties support custom types, and can be used to create type-safe keypaths and queries. *(See [Type-safe `CoreStoreObject`s](#type-safe-corestoreobjects))*
- **Progressive migrations.** No need to think how to migrate from all previous model versions to your latest model. Just tell the `DataStack` the sequence of version strings (`MigrationChain`s) and CoreStore will automatically use progressive migrations when needed. *(See [Migrations](#migrations))*
- ⭐️ **New in 4.0: Easier custom migrations.** Say goodbye to *.xcmappingmodel* files; CoreStore can now infer entity mappings when possible, while still allowing an easy way to write custom mappings. *(See [Migrations](#migrations))*
- **Plug-in your own logging framework.** Although a default logger is built-in, all logging, asserting, and error reporting can be funneled to `CoreStoreLogger` protocol implementations. *(See [Logging and error reporting](#logging-and-error-reporting))*
- **Heavy support for multiple persistent stores per data stack.** CoreStore lets you manage separate stores in a single `DataStack`, just the way *.xcdatamodeld* configurations are designed to. CoreStore will also manage one stack by default, but you can create and manage as many as you need. *(See [Setting up](#setting-up))*
- **Free to name entities and their class names independently.** CoreStore gets around a restriction with other Core Data wrappers where the entity name should be the same as the `NSManagedObject` subclass name. CoreStore loads entity-to-class mappings from the managed object model file, so you can assign different names for the entities and their class names.
- **Full Documentation.** No magic here; all public classes, functions, properties, etc. have detailed *Apple Docs*. This *README* also introduces a lot of concepts and explains a lot of CoreStore's behavior.
- **Informative (and pretty) logs.** All CoreStore and Core Data-related types now have very informative and pretty print outputs! *(See [Logging and error reporting](#logging-and-error-reporting))*
- **Objective-C support!** Is your project transitioning from Objective-C to Swift but still can't quite fully convert some huge classes to Swift yet? CoreStore adjusts to the ever-increasing Swift adoption. While still written in pure Swift, all CoreStore types have their corresponding Objective-C-visible "bridging classes". *(See [Objective-C support](#objective-c-support))*
- **More extensive Unit Tests.** Extending CoreStore is safe without having to worry about breaking old behavior.
+- **💎Tight design around Swift’s code elegance and type safety.** CoreStore fully utilizes Swift's community-driven language features.
+- **🚦Safer concurrency architecture.** CoreStore makes it hard to fall into common concurrency mistakes. The main `NSManagedObjectContext` is strictly read-only, while all updates are done through serial *transactions*. *(See [Saving and processing transactions](#saving-and-processing-transactions))*
+- **🔍Clean fetching and querying API.** Fetching objects is easy, but querying for raw aggregates (`min`, `max`, etc.) and raw property values is now just as convenient. *(See [Fetching and querying](#fetching-and-querying))*
+- **🔭Type-safe, easy to configure observers.** You don't have to deal with the burden of setting up `NSFetchedResultsController`s and KVO. As an added bonus, `ListMonitor`s and `ObjectMonitor`s can have multiple observers. This means you can have multiple view controllers efficiently share a single resource! *(See [Observing changes and notifications](#observing-changes-and-notifications))*
+- **📥Efficient importing utilities.** Map your entities once with their corresponding import source (JSON for example), and importing from *transactions* becomes elegant. Uniquing is also done with an efficient find-and-replace algorithm. *(See [Importing data](#importing-data))*
+- **🗑Say goodbye to *.xcdatamodeld* files!** The new `CoreStoreObject` is *the* replacement to `NSManagedObject`. `CoreStoreObject` subclasses can declare type-safe properties all in Swift code, no need to maintain separate resource files for the models. As bonus, these special properties support custom types, and can be used to create type-safe keypaths and queries. *(See [Type-safe `CoreStoreObject`s](#type-safe-corestoreobjects))*
+- **🔗Progressive migrations.** No need to think how to migrate from all previous model versions to your latest model. Just tell the `DataStack` the sequence of version strings (`MigrationChain`s) and CoreStore will automatically use progressive migrations when needed. *(See [Migrations](#migrations))*
+- **Easier custom migrations.** Say goodbye to *.xcmappingmodel* files; CoreStore can now infer entity mappings when possible, while still allowing an easy way to write custom mappings. *(See [Migrations](#migrations))*
+- **📝Plug-in your own logging framework.** Although a default logger is built-in, all logging, asserting, and error reporting can be funneled to `CoreStoreLogger` protocol implementations. *(See [Logging and error reporting](#logging-and-error-reporting))*
+- **⛓Heavy support for multiple persistent stores per data stack.** CoreStore lets you manage separate stores in a single `DataStack`, just the way *.xcdatamodeld* configurations are designed to. CoreStore will also manage one stack by default, but you can create and manage as many as you need. *(See [Setting up](#setting-up))*
+- **🎯Free to name entities and their class names independently.** CoreStore gets around a restriction with other Core Data wrappers where the entity name should be the same as the `NSManagedObject` subclass name. CoreStore loads entity-to-class mappings from the managed object model file, so you can assign different names for the entities and their class names.
+- **📙Full Documentation.** No magic here; all public classes, functions, properties, etc. have detailed *Apple Docs*. This *README* also introduces a lot of concepts and explains a lot of CoreStore's behavior.
+- **ℹ️Informative (and pretty) logs.** All CoreStore and Core Data-related types now have very informative and pretty print outputs! *(See [Logging and error reporting](#logging-and-error-reporting))*
+- **🎗Objective-C support!** Is your project transitioning from Objective-C to Swift but still can't quite fully convert some huge classes to Swift yet? CoreStore adjusts to the ever-increasing Swift adoption. While still written in pure Swift, all CoreStore types have their corresponding Objective-C-visible "bridging classes". *(See [Objective-C support](#objective-c-support))*
+- **🛡More extensive Unit Tests.** Extending CoreStore is safe without having to worry about breaking old behavior.

 *Have ideas that may benefit other Core Data users? [Feature Request](https://github.com/JohnEstropia/CoreStore/issues)s are welcome!*

@@ -85,7 +85,7 @@ CoreStore was (and is) heavily shaped by real-world needs of developing data-dep
            - [`Select<T>` clause](#selectt-clause)
            - [`GroupBy` clause](#groupby-clause)
    - [Logging and error reporting](#logging-and-error-reporting)
-    - [Observing changes and notifications](#observing-changes-and-notifications) (unavailable on macOS)
+    - [Observing changes and notifications](#observing-changes-and-notifications)
        - [Observe a single object](#observe-a-single-object)
        - [Observe a list of objects](#observe-a-list-of-objects)
    - [Objective-C support](#objective-c-support)
@@ -94,8 +94,6 @@ CoreStore was (and is) heavily shaped by real-world needs of developing data-dep
 - [Roadmap](#roadmap)
 - [Installation](#installation)
 - [Changesets](#changesets)
-    - [Upgrading from 3.x.x to 4.x.x](#upgrading-from-3xx-to-4xx)
-    - [Other Releases](#other-releases)
 - [Contact](#contact)
 - [Who uses CoreStore?](#who-uses-corestore)
 - [License](#license)
@@ -147,20 +145,18 @@ let people = CoreStore.fetchAll(From<MyPersonEntity>())
 Fetching objects (complex):
 ```swift
 let people = CoreStore.fetchAll(
-    From<MyPersonEntity>(),
-    Where("age > 30"),
-    OrderBy(.ascending("name"), .descending("age")),
-    Tweak { (fetchRequest) -> Void in
-        fetchRequest.includesPendingChanges = false
-    }
+    From<MyPersonEntity>()
+        .where(\.age > 30),
+        .orderBy(.ascending(\.name), .descending(.\age)),
+        .tweak({ $0.includesPendingChanges = false })
 )
 ```

 Querying values:
 ```swift
 let maxAge = CoreStore.queryValue(
-    From<MyPersonEntity>(),
-    Select<Int>(.maximum("age"))
+    From<MyPersonEntity>()
+        .select(Int.self, .maximum(\.age))
 )
 ```

@@ -229,8 +225,8 @@ let migrationProgress = dataStack.addStorage(
 CoreStore.defaultStack = dataStack // pass the dataStack to CoreStore for easier access later on
 ```

-(If you have never heard of "Configurations", you'll find them in your *.xcdatamodeld* file)
-<img src="https://cloud.githubusercontent.com/assets/3029684/8333192/e52cfaac-1acc-11e5-9902-08724f9f1324.png" alt="xcode configurations screenshot" height=212 />
+> 💡If you have never heard of "Configurations", you'll find them in your *.xcdatamodeld* file
+> <img src="https://cloud.githubusercontent.com/assets/3029684/8333192/e52cfaac-1acc-11e5-9902-08724f9f1324.png" alt="xcode configurations screenshot" height=212 />

 In our sample code above, note that you don't need to do the `CoreStore.defaultStack = dataStack` line. You can just as well hold a reference to the `DataStack` like below and call all its instance methods directly:
 ```swift
@@ -263,12 +259,14 @@ class MyViewController: UIViewController {
        }
    }
    func methodToBeCalledLaterOn() {
-        let objects = CoreStore.fetchAll(From(MyEntity))
+        let objects = CoreStore.fetchAll(From<MyEntity>())
        print(objects)
    }
 }
 ```

+> 💡By default, CoreStore will initialize `NSManagedObject`s from *.xcdatamodeld* files, but you can create models completely from source code using `CoreStoreObject`s and `CoreStoreSchema`.  To use this feature, refer to [Type-safe `CoreStoreObject`s](#type-safe-corestoreobjects).
+
 Notice that in our previous examples, `addStorageAndWait(_:)` and `addStorage(_:completion:)` both accept either `InMemoryStore`, `SQLiteStore`, or `ICloudStore`. These implement the `StorageInterface` protocol.

 ### In-memory store
@@ -314,7 +312,7 @@ public protocol LocalStorage: StorageInterface {
 If you have custom `NSIncrementalStore` or `NSAtomicStore` subclasses, you can implement this protocol and use it similarly to `SQLiteStore`.

 ### iCloud Store
-> **Important:** The iCloud Store is currently in beta. Please use with caution. If you have any concerns please do send me a message on [Twitter](https://twitter.com/JohnEstropia) or on the [CoreStore Slack Team](http://swift-corestore-slack.herokuapp.com/)
+> ⚠️**Important:** The iCloud Store is being deprecated. Please use with caution. If you have any concerns please do send me a message on [Twitter](https://twitter.com/JohnEstropia) or on the [CoreStore Slack Team](http://swift-corestore-slack.herokuapp.com/)

 As a counterpart to `LocalStorage`, the `CloudStorage` protocol abstracts stores managed in the cloud. CoreStore currently provides the concrete class `ICloudStore`. Unlike `InMemoryStore` and `SQLiteStore` though, the `ICloudStore`'s initializer may return `nil` if the iCloud container could not be located or if iCloud is not available on the device:
 ```swift
@@ -460,6 +458,55 @@ CoreStore.defaultStack = DataStack(
 )   
 ```

+**`CoreStoreSchema`-based model versions with progressive migration**
+```swift
+typealias Animal = V2.Animal
+typealias Dog = V2.Dog
+typealias Person = V2.Person
+enum V2 {
+    class Animal: CoreStoreObject {
+        // ...
+    }
+    class Dog: Animal {
+        // ...
+    }
+    class Person: CoreStoreObject {
+        // ...
+    }
+}
+enum V1 {
+    class Animal: CoreStoreObject {
+        // ...
+    }
+    class Dog: Animal {
+        // ...
+    }
+    class Person: CoreStoreObject {
+        // ...
+    }
+}
+
+CoreStore.defaultStack = DataStack(
+    CoreStoreSchema(
+        modelVersion: "V1",
+        entities: [
+            Entity<V1.Animal>("Animal", isAbstract: true),
+            Entity<V1.Dog>("Dog"),
+            Entity<V1.Person>("Person")
+        ]
+    ),
+    CoreStoreSchema(
+        modelVersion: "V2",
+        entities: [
+            Entity<V2.Animal>("Animal", isAbstract: true),
+            Entity<V2.Dog>("Dog"),
+            Entity<V2.Person>("Person")
+        ]
+    ),
+    migrationChain: ["V1", "V2"]
+)
+```
+

 ### Starting migrations
 We have seen `addStorageAndWait(...)` used to initialize our persistent store. As the method name's *~AndWait* suffix suggests though, this method blocks so it should not do long tasks such as store migrations. In fact CoreStore will only attempt a synchronous **lightweight** migration if you explicitly provide the `.allowSynchronousLightweightMigration` option:
@@ -504,14 +551,14 @@ This closure is executed on the main thread so UIKit and AppKit calls can be don


 ### Progressive migrations
-By default, CoreStore uses Core Data's default automatic migration mechanism. In other words, CoreStore will try to migrate the existing persistent store to the *.xcdatamodeld* file's current model version. If no mapping model is found from the store's version to the data model's version, CoreStore gives up and reports an error.
+By default, CoreStore uses Core Data's default automatic migration mechanism. In other words, CoreStore will try to migrate the existing persistent store until it matches the `SchemaHistory`'s `currentModelVersion`. If no mapping model path is found from the store's version to the data model's version, CoreStore gives up and reports an error.

 The `DataStack` lets you specify hints on how to break a migration into several sub-migrations using a `MigrationChain`. This is typically passed to the `DataStack` initializer and will be applied to all stores added to the `DataStack` with `addSQLiteStore(...)` and its variants:
 ```swift
 let dataStack = DataStack(migrationChain: 
    ["MyAppModel", "MyAppModelV2", "MyAppModelV3", "MyAppModelV4"])
 ```
-The most common usage is to pass in the *.xcdatamodeld* version names in increasing order as above.
+The most common usage is to pass in the model version (*.xcdatamodeld* version names for `NSManagedObject`s, or the `modelName` for `CoreStoreSchema`s) in increasing order as above.

 For more complex, non-linear migration paths, you can also pass in a version tree that maps the key-values to the source-destination versions:
 ```swift
@@ -536,7 +583,7 @@ The `MigrationChain` is validated when passed to the `DataStack` and unless it i
 - a version appears twice as a key in a dictionary literal
 - a loop is found in any of the paths

-One important thing to remember is that **if a `MigrationChain` is specified, the *.xcdatamodeld*'s "Current Version" will be bypassed** and the `MigrationChain`'s leafmost version will be the `DataStack`'s base model version.
+> ⚠️**Important: If a `MigrationChain` is specified, the *.xcdatamodeld*'s "Current Version" will be bypassed** and the `MigrationChain`'s leafmost version will be the `DataStack`'s base model version.


 ### Forecasting migrations
@@ -671,7 +718,7 @@ dataStack.perform(
    }
 )
 ```
-Never use `try?` or `try!` on a `transaction.cancel()` call. Always use `try`. Using `try?` will swallow the cancellation and the transaction will proceed to save as normal. Using `try!` will crash the app as `transaction.cancel()` will *always* throw an error.
+> ⚠️**Important:** Never use `try?` or `try!` on a `transaction.cancel()` call. Always use `try`. Using `try?` will swallow the cancellation and the transaction will proceed to save as normal. Using `try!` will crash the app as `transaction.cancel()` will *always* throw an error.

 The examples above use `perform(asynchronous:...)`, but there are actually 3 types of transactions at your disposal: *asynchronous*, *synchronous*, and *unsafe*.

@@ -708,6 +755,9 @@ CoreStore.perform(
    }
 )
 ```
+
+> ⚠️Be careful when returning `NSManagedObject`s or `CoreStoreObject`s from the transaction closure. Those instances are for the transaction's use only. See [Passing objects safely](#passing-objects-safely).
+
 Transactions created from `perform(asynchronous:...)` are instances of `AsynchronousDataTransaction`.

 #### Synchronous transactions
@@ -724,6 +774,21 @@ let hasChanges = CoreStore.perform(

 Since `perform(synchronous:...)` technically blocks two queues (the caller's queue and the transaction's background queue), it is considered less safe as it's more prone to deadlock. Take special care that the closure does not block on any other external queues.

+By default, `perform(synchronous:...)` will wait for observers such as `ListMonitor`s to be notified before the method returns. This may cause deadlocks, especially if you are calling this from the main thread. To reduce this risk, you may try to set the `waitForAllObservers:` parameter to `false`. Doing so tells the `SynchronousDataTransaction` to block only until it completes saving. It will not wait for other context's to receive those changes. This reduces deadlock risk but may have surprising side-effects:
+```swift
+CoreStore.perform(
+    synchronous: { (transaction) in
+        let person = transaction.create(Into<Person>())
+        person.name = "John"
+    },
+    waitForAllObservers: false
+)
+let newPerson = CoreStore.fetchOne(From<Person>.where(\.name == "John"))
+// newPerson may be nil!
+// The DataStack may have not yet received the update notification.
+```
+Due to this complicated nature of synchronous transactions, if your app has very heavy transaction throughput it is highly recommended to use [asynchronous transactions](#asynchronous-transactions) instead.
+
 #### Unsafe transactions
 are special in that they do not enclose updates within a closure:
 ```swift
@@ -756,8 +821,8 @@ let person = transaction.create(Into<MyPersonEntity>())
 While the syntax is straightforward, CoreStore does not just naively insert a new object. This single line does the following:
 - Checks that the entity type exists in any of the transaction's parent persistent store
 - If the entity belongs to only one persistent store, a new object is inserted into that store and returned from `create(...)`
- If the entity does not belong to any store, an assert will be triggered. **This is a programmer error and should never occur in production code.**
- If the entity belongs to multiple stores, an assert will be triggered. **This is also a programmer error and should never occur in production code.** Normally, with Core Data you can insert an object in this state but saving the `NSManagedObjectContext` will always fail. CoreStore checks this for you at creation time when it makes sense (not during save).
+- If the entity does not belong to any store, an assertion failure will be raised. **This is a programmer error and should never occur in production code.**
+- If the entity belongs to multiple stores, an assertion failure will be raised. **This is also a programmer error and should never occur in production code.** Normally, with Core Data you can insert an object in this state but saving the `NSManagedObjectContext` will always fail. CoreStore checks this for you at creation time when it makes sense (not during save).

 If the entity exists in multiple configurations, you need to provide the configuration name for the destination persistent store:

@@ -787,8 +852,8 @@ To update an existing object, fetch the object's instance from the transaction:
 CoreStore.perform(
    asynchronous: { (transaction) -> Void in
        let person = transaction.fetchOne(
-            From<MyPersonEntity>(),
-            Where("name", isEqualTo: "Jane Smith")
+            From<MyPersonEntity>()
+                .where(\.name == "Jane Smith")
        )
        person.age = person.age + 1
    },
@@ -859,8 +924,8 @@ If you do not have references yet to the objects to be deleted, transactions hav
 CoreStore.perform(
    asynchronous: { (transaction) -> Void in
        transaction.deleteAll(
-            From<MyPersonEntity>(),
-            Where("age > 30")
+            From<MyPersonEntity>()
+                .where(\.age > 30)
        )
    },
    completion: { _ in }
@@ -907,8 +972,8 @@ var peopleIDs: [NSManagedObjectID] = // ...
 CoreStore.perform(
    asynchronous: { (transaction) -> Void in
        let jane = transaction.fetchOne(
-            From<MyPersonEntity>(),
-            Where("name", isEqualTo: "Jane Smith")
+            From<MyPersonEntity>()
+                .where(\.name == "Jane Smith")
        )
        jane.friends = NSSet(array: transaction.fetchExisting(peopleIDs)!)
        // ...
@@ -953,7 +1018,7 @@ typealias ImportSource = [String: Any]
 ```swift
 typealias ImportSource = NSData
 ```
-You can even use external types from popular 3rd-party JSON libraries ([SwiftyJSON](https://github.com/SwiftyJSON/SwiftyJSON)'s `JSON` type is a personal favorite), or just simple tuples or primitives.
+You can even use external types from popular 3rd-party JSON libraries, or just simple tuples or primitives.

 #### `ImportableObject`
 `ImportableObject` is a very simple protocol:
@@ -1151,11 +1216,11 @@ The `Where` clause is CoreStore's `NSPredicate` wrapper. It specifies the search
 ```swift
 var people = CoreStore.fetchAll(
    From<MyPersonEntity>(),
-    Where("%K > %d", "age", 30) // string format initializer
+    Where<MyPersonEntity>("%K > %d", "age", 30) // string format initializer
 )
 people = CoreStore.fetchAll(
    From<MyPersonEntity>(),
-    Where(true) // boolean initializer
+    Where<MyPersonEntity>(true) // boolean initializer
 )
 ```
 If you do have an existing `NSPredicate` instance already, you can pass that to `Where` as well:
@@ -1163,14 +1228,21 @@ If you do have an existing `NSPredicate` instance already, you can pass that to
 let predicate = NSPredicate(...)
 var people = CoreStore.fetchAll(
    From<MyPersonEntity>(),
-    Where(predicate) // predicate initializer
+    Where<MyPersonEntity>(predicate) // predicate initializer
+)
+```
+⭐️Starting CoreStore 5.0, `Where` clauses became more type-safe and are now generic types. To avoid verbose repetition of the generic object type, fetch methods now support **Fetch Chain builders**. We can also use Swift's Smart KeyPaths as the `Where` clause expression:
+```swift
+var people = CoreStore.fetchAll(
+    From<MyPersonEntity>()
+        .where(\.age > 30) // Type-safe!
 )
 ```
 `Where` clauses also implement the `&&`, `||`, and `!` logic operators, so you can provide logical conditions without writing too much `AND`, `OR`, and `NOT` strings:
 ```swift
 var people = CoreStore.fetchAll(
-    From<MyPersonEntity>(),
-    Where("age > %d", 30) && Where("gender == %@", "M")
+    From<MyPersonEntity>()
+        .where(\.age > 30 && \.gender == "M")
 )
 ```
 If you do not provide a `Where` clause, all objects that belong to the specified `From` will be returned.
@@ -1181,16 +1253,23 @@ The `OrderBy` clause is CoreStore's `NSSortDescriptor` wrapper. Use it to specif
 ```swift
 var mostValuablePeople = CoreStore.fetchAll(
    From<MyPersonEntity>(),
-    OrderBy(.descending("rating"), .ascending("surname"))
+    OrderBy<MyPersonEntity>(.descending("rating"), .ascending("surname"))
 )
 ```
 As seen above, `OrderBy` accepts a list of `SortKey` enumeration values, which can be either `.ascending` or `.descending`.
+⭐️As with `Where` clauses, CoreStore 5.0 turned `OrderBy` clauses into generic types. To avoid verbose repetition of the generic object type, fetch methods now support **Fetch Chain builders**. We can also use Swift's Smart KeyPaths as the `OrderBy` clause expression:
+```swift
+var people = CoreStore.fetchAll(
+    From<MyPersonEntity>()
+        .orderBy(.descending(\.rating), .ascending(\.surname)) // Type-safe!
+)
+```

 You can use the `+` and `+=` operator to append `OrderBy`s together. This is useful when sorting conditionally:
 ```swift
-var orderBy = OrderBy(.descending("rating"))
+var orderBy = OrderBy<MyPersonEntity>(.descending(\.rating))
 if sortFromYoungest {
-    orderBy += OrderBy(.ascending("age"))
+    orderBy += OrderBy(.ascending(\.age))
 }
 var mostValuablePeople = CoreStore.fetchAll(
    From<MyPersonEntity>(),
@@ -1204,8 +1283,8 @@ The `Tweak` clause lets you, uh, *tweak* the fetch (or query). `Tweak` exposes t
 ```swift
 var people = CoreStore.fetchAll(
    From<MyPersonEntity>(),
-    Where("age > %d", 30),
-    OrderBy(.ascending("surname")),
+    Where<MyPersonEntity>("age > %d", 30),
+    OrderBy<MyPersonEntity>(.ascending("surname")),
    Tweak { (fetchRequest) -> Void in
        fetchRequest.includesPendingChanges = false
        fetchRequest.returnsObjectsAsFaults = false
@@ -1213,6 +1292,19 @@ var people = CoreStore.fetchAll(
    }
 )
 ```
+`Tweak` also supports **Fetch Chain builders**:
+```swift
+var people = CoreStore.fetchAll(
+    From<MyPersonEntity>(),
+        .where(\.age > 30)
+        .orderBy(.ascending(\.surname))
+        .tweak {
+            $0.includesPendingChanges = false
+            $0.returnsObjectsAsFaults = false
+            $0.includesSubentities = false
+        }
+)
+```
 The clauses are evaluated the order they appear in the fetch/query, so you typically need to set `Tweak` as the last clause.
 `Tweak`'s closure is executed only just before the fetch occurs, so make sure that any values captured by the closure is not prone to race conditions.

@@ -1248,6 +1340,14 @@ let allAges = CoreStore.queryAttributes(
    Select("age")
 )
 ```
+⭐️Starting CoreStore 5.0, query methods now support **Query Chain builders**. We can also use Swift's Smart KeyPaths to use in the expressions:
+```swift
+let johnsAge = CoreStore.queryValue(
+    From<MyPersonEntity>()
+        .select(\.age) // binds the result to Int
+        .where(\.name == "John Smith")
+)
+```

 If you only need a value for a particular attribute, you can just specify the key name (like we did with `Select<Int>("age")`), but several aggregate functions can also be used as parameter to `Select`:
 - `.average(...)`
@@ -1334,6 +1434,14 @@ let personJSON = CoreStore.queryAttributes(
    GroupBy("age")
 )
 ```
+⭐️Starting CoreStore 5.0, `GroupBy` clauses are now also generic types and now support **Query Chain builders**. We can also use Swift's Smart KeyPaths to use in the expressions:
+```swift
+let personJSON = CoreStore.queryAttributes(
+    From<MyPersonEntity>()
+        .select(.attribute(\.age), .count(\.age, as: "count"))
+        .groupBy(\.age)
+)
+```
 this returns dictionaries that shows the count for each `"age"`:
 ```swift
 [
@@ -1382,7 +1490,9 @@ A couple of examples, `ListMonitor`:

 These are all implemented with `CustomDebugStringConvertible.debugDescription`, so they work with lldb's `po` command as well.

-## Observing changes and notifications (unavailable on macOS)
+## Observing changes and notifications
+> (unavailable on macOS versions below 10.12)
+
 CoreStore provides type-safe wrappers for observing managed objects:

 - `ObjectMonitor`: use to monitor changes to a single `NSManagedObject` or `CoreStoreObject` instance (instead of Key-Value Observing)
@@ -1397,7 +1507,7 @@ class MyViewController: UIViewController, ObjectObserver {
        // ...
    }
    
-    func objectMonitor(monitor: ObjectMonitor<MyPersonEntity>, didUpdateObject object: MyPersonEntity, changedPersistentKeys: Set<KeyPath>) {
+    func objectMonitor(monitor: ObjectMonitor<MyPersonEntity>, didUpdateObject object: MyPersonEntity, changedPersistentKeys: Set<KeyPathString>) {
        // ...
    }
    
@@ -1457,12 +1567,10 @@ Including `ListObserver`, there are 3 observer protocols you can implement depen
 We then need to create a `ListMonitor` instance and register our `ListObserver` as an observer:
 ```swift
 self.monitor = CoreStore.monitorList(
-    From<MyPersonEntity>(),
-    Where("age > 30"),
-    OrderBy(.ascending("name")),
-    Tweak { (fetchRequest) -> Void in
-        fetchRequest.fetchBatchSize = 20
-    }
+    From<MyPersonEntity>()
+        .where(\.age > 30)
+        .orderBy(.ascending(\.name))
+        .tweak { $0.fetchBatchSize = 20 }
 )
 self.monitor.addObserver(self)
 ```
@@ -1478,13 +1586,11 @@ let firstPerson = self.monitor[0]
 If the list needs to be grouped into sections, create the `ListMonitor` instance with the `monitorSectionedList(...)` method and a `SectionBy` clause:
 ```swift
 self.monitor = CoreStore.monitorSectionedList(
-    From<MyPersonEntity>(),
-    SectionBy("age"),
-    Where("gender", isEqualTo: "M"),
-    OrderBy(.ascending("age"), .ascending("name")),
-    Tweak { (fetchRequest) -> Void in
-        fetchRequest.fetchBatchSize = 20
-    }
+    From<MyPersonEntity>()
+        .sectionBy(\.age)
+        .where(\.gender == "M")
+        .orderBy(.ascending(\.age), .ascending(\.name))
+        .tweak { $0.fetchBatchSize = 20 }
 )
 ```
 A list controller created this way will group the objects by the attribute key indicated by the `SectionBy` clause. One more thing to remember is that the `OrderBy` clause should sort the list in such a way that the `SectionBy` attribute would be sorted together (a requirement shared by `NSFetchedResultsController`.)
@@ -1492,11 +1598,11 @@ A list controller created this way will group the objects by the attribute key i
 The `SectionBy` clause can also be passed a closure to transform the section name into a displayable string:
 ```swift
 self.monitor = CoreStore.monitorSectionedList(
-    From<MyPersonEntity>(),
-    SectionBy("age") { (sectionName) -> String? in
-        "\(sectionName) years old"
-    },
-    OrderBy(.ascending("age"), .ascending("name"))
+    From<MyPersonEntity>()
+        .sectionBy(\.age) { (sectionName) -> String? in
+            "\(sectionName) years old"
+        }
+        .orderBy(.ascending(\.age), .ascending(\.name))
 )
 ```
 This is useful when implementing a `UITableViewDelegate`'s section header:
@@ -1516,9 +1622,9 @@ let person2 = self.monitor[1, 2]
 ```

 ## Objective-C support
-CoreStore 2.0 was a big move to address the large number of apps starting to convert from Objective-C to Swift. The basic problem is this: The cost of converting all code base to Swift is very big, so most apps are forced to do undergo a *transitional* ObjC-Swift hybrid phase. This used to mean that these apps could not use the Swifty-est libraries out there yet, or that they may have to write their own bridging methods just to make new code usable in their old Objective-C code.
+> ⚠️Objective-C support is planned to be deprecated in a future CoreStore version.

-With 2.0, all CoreStore types are still written in pure Swift, but they now have Objective-C "bridging classes" that are visible to Objective-C code. To show a couple of usage examples:
+All CoreStore types are still written in pure Swift, but most core types have Objective-C "bridging classes" that are visible to Objective-C code. To show a couple of usage examples:

 <table>
 <tr><th>Swift</th><th>Objective-C</th></tr>
@@ -1566,7 +1672,7 @@ All of these `CS`-prefixed bridging classes have very similar usage to the exist
 For example, you may have a new, modern Swift class that holds a `ListMonitor`:
 ```swift
 class MyViewController: UIViewController {
-    let monitor = CoreStore.monitorList(From(MyEntity), ...)
+    let monitor = CoreStore.monitorList(From<MyEntity>(), ...)
    // ...
 }
 ```
@@ -1580,7 +1686,7 @@ Now let's say you have a legacy Objective-C class that previously uses `NSFetche
 When you need to instantiate this class from Swift, you just call `bridgeToObjectiveC`:
 ```swift
 class MyViewController: UIViewController {
-    let monitor = CoreStore.monitorList(From(MyEntity), ...)
+    let monitor = CoreStore.monitorList(From<MyEntity>(), ...)
    func showOldController() {
        let controller = MYOldViewController(monitor: self.monitor.bridgeToObjectiveC)
        self.presentViewController(controller, animated: true, completion: nil)
@@ -1625,7 +1731,7 @@ To use these syntax sugars, include *CoreStoreBridge.h* in your Objective-C sour
 Starting CoreStore 4.0, we can now create persisted objects without depending on *.xcdatamodeld* Core Data files. The new `CoreStoreObject` subclass replaces `NSManagedObject`, and specially-typed properties declared on these classes will be synthesized as Core Data attributes.
 ```swift
 class Animal: CoreStoreObject {
-    let species = Value.Required<String>("species")
+    let species = Value.Required<String>("species", initial: "")
 }

 class Dog: Animal {
@@ -1634,22 +1740,22 @@ class Dog: Animal {
 }

 class Person: CoreStoreObject {
-    let name = Value.Required<String>("name")
+    let name = Value.Required<String>("name", initial: "")
    let pets = Relationship.ToManyUnordered<Dog>("pets", inverse: { $0.master })
 }
 ```
 The property names to be saved to Core Data is specified as the `keyPath` argument. This lets us refactor our Swift code without affecting the underlying database. For example:
 ```swift
 class Person: CoreStoreObject {
-    private let _name = Value.Required<String>("name")
-    // ...
+    private let _name = Value.Required<String>("name", initial: "")
+    // note property name is independent of the storage key name
 }
 ```
 Here we added an underscore to the property name and made it `private`, but the underlying key-path `"name"` was unchanged so our model will not trigger a data migration.

-> **Important:** As a rule, CoreStore can only process *stored properties*. Computed, `static`, `weak`, or `lazy` properties will not be added to the store. It is also strictly advised use `let` instead of `var` to declare these properties, as any changes to the schema after declaration is not allowed.
+> ⚠️**Important:** As a rule, CoreStore can only process *stored properties*. Computed, `static`, `weak`, or `lazy` properties will be ignored and will not be added to the store. It is also strictly advised use `let` instead of `var` to declare these properties, as any changes to the property value will break the schema.

-Also note how `Relationship`s are linked statically with the `inverse:` argument. All relationships are required to have an "inverse" relationship. Unfortunately, due to Swift compiler limitation we can only declare the `inverse:` on one end of the relationship-pair.
+Also note how `Relationship`s are linked statically with the `inverse:` argument. **All relationships are required to have an "inverse" relationship**. Unfortunately, due to Swift compiler limitation we can only declare the `inverse:` on one end of the relationship-pair.

 To tell the `DataStack` about these types, add all `CoreStoreObject`s' entities to a `CoreStoreSchema`:
 ```swift
@@ -1672,7 +1778,7 @@ These special properties' values can be accessed or mutated using `.value`:
 ```swift
 CoreStore.perform(
    asynchronous: { (transaction) in
-        let dog: Dog = CoreStore.fetchOne(From<Dog>())!
+        let dog: Dog = transaction.fetchOne(From<Dog>())!
        // ...
        let nickname = dog.nickname.value // String?
        let species = dog.species.value // String
@@ -1691,9 +1797,9 @@ let keyPath: String = Dog.keyPath { $0.nickname }
 as well as `Where` and `OrderBy` clauses
 ```swift
 let puppies = CoreStore.fetchAll(
-    From<Dog>(),
-    Dog.where { $0.age < 1 },
-    Dog.ascending { $0.age }
+    From<Dog>()
+        .where(\.age < 1)
+        .orderBy(.ascending(\.age))
 )
 ```

@@ -1703,7 +1809,7 @@ All CoreStore APIs that are usable with `NSManagedObject`s are also available fo

 While it is convenient to be able to declare entities only in code, it is worrying that we might accidentally change the `CoreStoreObject`'s properties and break our users' model version history. For this, the `CoreStoreSchema` allows us to "lock" our properties to a particular configuration. Any changes to that `VersionLock` will raise an assertion failure during the `CoreStoreSchema` initialization, so you can then look for the commit which changed the `VersionLock` hash.

-To use `VersionLock`s, create the `CoreStoreSchema`, run the app, and look for this particular log message that is automatically printed to the console:
+To use `VersionLock`s, create the `CoreStoreSchema`, run the app, and look for a similar log message that is automatically printed to the console:

 <img width="700" alt="VersionLock" src="https://cloud.githubusercontent.com/assets/3029684/26525632/757f1bd0-4398-11e7-9795-4132a2df0538.png" />

@@ -1736,7 +1842,7 @@ Once the version lock is set, any changes in the properties or to the model will
 # Installation
 - Requires:
    - iOS 8 SDK and above
-    - Swift 3.1 (Xcode 8.3.2+)
+    - Swift 4 (Xcode 9+)
 - Dependencies:
    - *None*
 - Other notes:
@@ -1745,7 +1851,7 @@ Once the version lock is set, any changes in the properties or to the model will
 ### Install with CocoaPods
 In your `Podfile`, add
 ```
-pod 'CoreStore', '~> 4.0'
+pod 'CoreStore', '~> 5.0'
 ```
 and run 
 ```
@@ -1756,7 +1862,7 @@ This installs CoreStore as a framework. Declare `import CoreStore` in your swift
 ### Install with Carthage
 In your `Cartfile`, add
 ```
-github "JohnEstropia/CoreStore" >= 4.0.0
+github "JohnEstropia/CoreStore" >= 5.0.0
 ```
 and run 
 ```
@@ -1782,30 +1888,12 @@ Add all *.swift* files to your project.
 To use the Objective-C syntax sugars, import *CoreStoreBridge.h* in your *.m* source files.

 # Changesets
-### Upgrading from 3.x.x to 4.x.x
-**Obsoleted**
- `LegacySQLiteStore` is now finally obsoleted in favor of `SQLiteStore`. For sqlite files that were created previously with `LegacySQLiteStore`, make sure to use the `SQLiteStore.legacy(...)` factory method to create an `SQLiteStore` that can load the file from the legacy file path.
- `SQLiteStore.init(...)`'s `mappingModelBundles` argument is now obsolete. The new initializer accepts a `migrationMappingProviders` optional argument where explicit mapping sources are declared. For reference on how to do this, read on [Custom migrations](#custom-migrations).
-
-**Deprecated**
- `DataStack.beginAsynchronous(...)`, `DataStack.beginSynchronous(...)`, `AsynchronousDataTransaction.commit(...)`, and `SynchronousDataTransaction.commit(...)` are now deprecated in favor of `DataStack.perform(asynchronous:...)` and `DataStack.perform(synchronous:...)` family of methods. These new `perform(...)` methods are auto-commit, meaning the transaction automatically calls `commit()` internally after the transction closure completes. To roll-back and cancel a transaction, call `try transaction.cancel()`. Read [Saving and processing transactions](#saving-and-processing-transactions) for more details.
-
-**Other Changes**
- `ListMonitor.refetch(...)` now works by recreating its internal `NSFetchedResultsController`. Previously `refetch(...)` would only apply new `FetchClause`s on top of previous fetches. Now all `FetchClauses` are required to be passed to `refetch(...)` each time it is called.
- New important concepts on "Dynamic Models", "Schema", and "Schema Histories".
-    - **Dynamic Models** (`DynamicObject` protocol): These are Core Data object types that any `NSManagedObject` or `CoreStoreObject`s conform to. *(See [Type-safe `CoreStoreObject`s](#type-safe-corestoreobjects))*
-    - **Version Schema** (`DynamicSchema` protocol): These types contain info for a single model version, as well as entities that belong to it. Currently supports `XcodeDataModelSchema` (*.xcdatamodeld* file), `CoreStoreSchema`, or `UnsafeDataModelSchema`. *(See [Migrations](#migrations))*
-    - **Schema History** (`SchemaHistory` class): This is now the preferred way to express all models to the `DataStack`. This class contains info to all the `DynamicSchema` across multiple model versions. *(See [Migrations](#migrations))*
-
-### Other Releases

 For the full Changelog, refer to the [Releases](https://github.com/JohnEstropia/CoreStore/releases) page. 


 # Contact
-Questions? Suggestions?
-
-Reach me on Twitter [@JohnEstropia](https://twitter.com/JohnEstropia)
+You can reach me on Twitter [@JohnEstropia](https://twitter.com/JohnEstropia)

 or join our Slack team at [swift-corestore.slack.com](http://swift-corestore-slack.herokuapp.com/)

--- a/Sources/AsynchronousDataTransaction.swift
+++ b/Sources/AsynchronousDataTransaction.swift
@@ -100,7 +100,7 @@ public final class AsynchronousDataTransaction: BaseDataTransaction {
     - parameter into: the `Into` clause indicating the destination `NSManagedObject` or `CoreStoreObject` entity type and the destination configuration
     - returns: a new `NSManagedObject` or `CoreStoreObject` instance of the specified entity type.
     */
-    public override func create<T: DynamicObject>(_ into: Into<T>) -> T {
+    public override func create<D>(_ into: Into<D>) -> D {
        
        CoreStore.assert(
            !self.isCommitted,
@@ -116,7 +116,7 @@ public final class AsynchronousDataTransaction: BaseDataTransaction {
     - parameter object: the `NSManagedObject` or `CoreStoreObject` to be edited
     - returns: an editable proxy for the specified `NSManagedObject` or `CoreStoreObject`.
     */
-    public override func edit<T: DynamicObject>(_ object: T?) -> T? {
+    public override func edit<D: DynamicObject>(_ object: D?) -> D? {
        
        CoreStore.assert(
            !self.isCommitted,
@@ -133,7 +133,7 @@ public final class AsynchronousDataTransaction: BaseDataTransaction {
     - parameter objectID: the `NSManagedObjectID` for the object to be edited
     - returns: an editable proxy for the specified `NSManagedObject` or `CoreStoreObject`.
     */
-    public override func edit<T: DynamicObject>(_ into: Into<T>, _ objectID: NSManagedObjectID) -> T? {
+    public override func edit<D>(_ into: Into<D>, _ objectID: NSManagedObjectID) -> D? {
        
        CoreStore.assert(
            !self.isCommitted,
@@ -148,7 +148,7 @@ public final class AsynchronousDataTransaction: BaseDataTransaction {
     
     - parameter object: the `NSManagedObject` or `CoreStoreObject` to be deleted
     */
-    public override func delete<T: DynamicObject>(_ object: T?) {
+    public override func delete<D: DynamicObject>(_ object: D?) {
        
        CoreStore.assert(
            !self.isCommitted,
@@ -165,7 +165,7 @@ public final class AsynchronousDataTransaction: BaseDataTransaction {
     - parameter object2: another `DynamicObject` to be deleted
     - parameter objects: other `DynamicObject`s to be deleted
     */
-    public override func delete<T: DynamicObject>(_ object1: T?, _ object2: T?, _ objects: T?...) {
+    public override func delete<D: DynamicObject>(_ object1: D?, _ object2: D?, _ objects: D?...) {
        
        CoreStore.assert(
            !self.isCommitted,
@@ -203,13 +203,14 @@ public final class AsynchronousDataTransaction: BaseDataTransaction {
        self.isCommitted = true
        let group = DispatchGroup()
        group.enter()
-        self.context.saveAsynchronouslyWithCompletion { (result) -> Void in
+        self.context.saveAsynchronouslyWithCompletion { (hasChanges, error) -> Void in
            
-            completion(result.0, result.1)
-            self.result = result
+            completion(hasChanges, error)
+            self.result = (hasChanges, error)
            group.leave()
        }
        group.wait()
+        self.context.reset()
    }
    
    
@@ -226,12 +227,15 @@ public final class AsynchronousDataTransaction: BaseDataTransaction {
            !self.isCommitted,
            "Attempted to commit a \(cs_typeName(self)) more than once."
        )
-        self.autoCommit { (result) in
+        self.autoCommit { (hasChanges, error) in
            
-            switch result {
+            if let error = error {
                
-            case (let hasChanges, nil): completion(SaveResult(hasChanges: hasChanges))
-            case (_, let error?):       completion(SaveResult(error))
+                completion(SaveResult(error))
+            }
+            else {
+                
+                completion(SaveResult(hasChanges: hasChanges))
            }
        }
    }
@@ -266,9 +270,9 @@ public final class AsynchronousDataTransaction: BaseDataTransaction {
        }
        switch childTransaction.result {
            
-        case nil:                       return nil
-        case (let hasChanges, nil)?:    return SaveResult(hasChanges: hasChanges)
-        case (_, let error?)?:          return SaveResult(error)
+        case .none:                         return nil
+        case .some(let hasChanges, nil):    return SaveResult(hasChanges: hasChanges)
+        case .some(_, let error?):          return SaveResult(error)
        }
    }
 }
--- a/Sources/AttributeProtocol.swift
+++ b/Sources/AttributeProtocol.swift
@@ -0,0 +1,47 @@
+//
+//  AttributeProtocol.swift
+//  CoreStore
+//
+//  Copyright © 2017 John Rommel Estropia
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all
+//  copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+//  SOFTWARE.
+//
+
+import Foundation
+import CoreData
+
+
+// MARK: - AttributeProtocol
+
+internal protocol AttributeProtocol: class {
+    
+    static var attributeType: NSAttributeType { get }
+    
+    var keyPath: KeyPathString { get }
+    var isOptional: Bool { get }
+    var isIndexed: Bool { get }
+    var isTransient: Bool { get }
+    var versionHashModifier: () -> String? { get }
+    var renamingIdentifier: () -> String? { get }
+    var defaultValue: () -> Any? { get }
+    var affectedByKeyPaths: () -> Set<String> { get }
+    weak var parentObject: CoreStoreObject? { get set }
+    var getter: CoreStoreManagedObject.CustomGetter? { get }
+    var setter: CoreStoreManagedObject.CustomSetter? { get }
+}
--- a/Sources/BaseDataTransaction+Importing.swift
+++ b/Sources/BaseDataTransaction+Importing.swift
@@ -39,9 +39,9 @@ public extension BaseDataTransaction {
     - throws: an `Error` thrown from any of the `ImportableObject` methods
     - returns: the created `ImportableObject` instance, or `nil` if the import was ignored
     */
-    public func importObject<T: DynamicObject & ImportableObject>(
-        _ into: Into<T>,
-        source: T.ImportSource) throws -> T? {
+    public func importObject<D: ImportableObject>(
+        _ into: Into<D>,
+        source: D.ImportSource) throws -> D? {
            
            CoreStore.assert(
                self.isRunningInAllowedQueue(),
@@ -69,9 +69,9 @@ public extension BaseDataTransaction {
     - parameter source: the object to import values from
     - throws: an `Error` thrown from any of the `ImportableObject` methods
     */
-    public func importObject<T: DynamicObject & ImportableObject>(
-        _ object: T,
-        source: T.ImportSource) throws {
+    public func importObject<D: ImportableObject>(
+        _ object: D,
+        source: D.ImportSource) throws {
            
            CoreStore.assert(
                self.isRunningInAllowedQueue(),
@@ -97,9 +97,9 @@ public extension BaseDataTransaction {
     - throws: an `Error` thrown from any of the `ImportableObject` methods
     - returns: the array of created `ImportableObject` instances
     */
-    public func importObjects<T: DynamicObject & ImportableObject, S: Sequence>(
-        _ into: Into<T>,
-        sourceArray: S) throws -> [T] where S.Iterator.Element == T.ImportSource {
+    public func importObjects<D: ImportableObject, S: Sequence>(
+        _ into: Into<D>,
+        sourceArray: S) throws -> [D] where S.Iterator.Element == D.ImportSource {
            
            CoreStore.assert(
                self.isRunningInAllowedQueue(),
@@ -108,7 +108,7 @@ public extension BaseDataTransaction {
            
            return try autoreleasepool {
                
-                return try sourceArray.flatMap { (source) -> T? in
+                return try sourceArray.flatMap { (source) -> D? in
                  
                    let entityType = into.entityClass 
                    guard entityType.shouldInsert(from: source, in: self) else {
@@ -133,9 +133,9 @@ public extension BaseDataTransaction {
     - throws: an `Error` thrown from any of the `ImportableUniqueObject` methods
     - returns: the created/updated `ImportableUniqueObject` instance, or `nil` if the import was ignored
     */
-    public func importUniqueObject<T: DynamicObject & ImportableUniqueObject>(
-        _ into: Into<T>,
-        source: T.ImportSource) throws -> T? {
+    public func importUniqueObject<D: ImportableUniqueObject>(
+        _ into: Into<D>,
+        source: D.ImportSource) throws -> D? {
            
            CoreStore.assert(
                self.isRunningInAllowedQueue(),
@@ -151,7 +151,7 @@ public extension BaseDataTransaction {
                    return nil
                }
                
-                if let object = self.fetchOne(From(entityType), Where(uniqueIDKeyPath, isEqualTo: uniqueIDValue)) {
+                if let object = self.fetchOne(From(entityType), Where<D>(uniqueIDKeyPath, isEqualTo: uniqueIDValue)) {
                    
                    guard entityType.shouldUpdate(from: source, in: self) else {
                        
@@ -185,10 +185,10 @@ public extension BaseDataTransaction {
     - throws: an `Error` thrown from any of the `ImportableUniqueObject` methods
     - returns: the array of created/updated `ImportableUniqueObject` instances
     */
-    public func importUniqueObjects<T: DynamicObject & ImportableUniqueObject, S: Sequence>(
-        _ into: Into<T>,
+    public func importUniqueObjects<D: ImportableUniqueObject, S: Sequence>(
+        _ into: Into<D>,
        sourceArray: S,
-        preProcess: @escaping (_ mapping: [T.UniqueIDType: T.ImportSource]) throws -> [T.UniqueIDType: T.ImportSource] = { $0 }) throws -> [T] where S.Iterator.Element == T.ImportSource {
+        preProcess: @escaping (_ mapping: [D.UniqueIDType: D.ImportSource]) throws -> [D.UniqueIDType: D.ImportSource] = { $0 }) throws -> [D] where S.Iterator.Element == D.ImportSource {
            
            CoreStore.assert(
                self.isRunningInAllowedQueue(),
@@ -198,10 +198,10 @@ public extension BaseDataTransaction {
            return try autoreleasepool {
              
                let entityType = into.entityClass 
-                var importSourceByID = Dictionary<T.UniqueIDType, T.ImportSource>()
+                var importSourceByID = Dictionary<D.UniqueIDType, D.ImportSource>()
                let sortedIDs = try autoreleasepool {
                  
-                    return try sourceArray.flatMap { (source) -> T.UniqueIDType? in
+                    return try sourceArray.flatMap { (source) -> D.UniqueIDType? in
                        
                        guard let uniqueIDValue = try entityType.uniqueID(from: source, in: self) else {
                            
@@ -214,12 +214,12 @@ public extension BaseDataTransaction {
                
                importSourceByID = try autoreleasepool { try preProcess(importSourceByID) }

-                var existingObjectsByID = Dictionary<T.UniqueIDType, T>()
-                self.fetchAll(From(entityType), Where(entityType.uniqueIDKeyPath, isMemberOf: sortedIDs))?
+                var existingObjectsByID = Dictionary<D.UniqueIDType, D>()
+                self.fetchAll(From(entityType), Where<D>(entityType.uniqueIDKeyPath, isMemberOf: sortedIDs))?
                    .forEach { existingObjectsByID[$0.uniqueIDValue] = $0 }
              
-                var processedObjectIDs = Set<T.UniqueIDType>()
-                var result = [T]()
+                var processedObjectIDs = Set<D.UniqueIDType>()
+                var result = [D]()
              
                for objectID in sortedIDs where !processedObjectIDs.contains(objectID) {
                    
--- a/Sources/BaseDataTransaction+Querying.swift
+++ b/Sources/BaseDataTransaction+Querying.swift
@@ -39,13 +39,12 @@ extension BaseDataTransaction: FetchableSource, QueryableSource {
     - returns: the number of `DynamicObject`s deleted
     */
    @discardableResult
-    public func deleteAll<T: DynamicObject>(_ from: From<T>, _ deleteClauses: DeleteClause...) -> Int? {
+    public func deleteAll<D>(_ from: From<D>, _ deleteClauses: DeleteClause...) -> Int? {
        
        CoreStore.assert(
            self.isRunningInAllowedQueue(),
            "Attempted to delete from a \(cs_typeName(self)) outside its designated queue."
        )
-        
        return self.context.deleteAll(from, deleteClauses)
    }
    
@@ -57,14 +56,32 @@ extension BaseDataTransaction: FetchableSource, QueryableSource {
     - returns: the number of `DynamicObject`s deleted
     */
    @discardableResult
-    public func deleteAll<T: DynamicObject>(_ from: From<T>, _ deleteClauses: [DeleteClause]) -> Int? {
+    public func deleteAll<D>(_ from: From<D>, _ deleteClauses: [DeleteClause]) -> Int? {
+        
+        CoreStore.assert(
+            self.isRunningInAllowedQueue(),
+            "Attempted to delete from a \(cs_typeName(self)) outside its designated queue."
+        )
+        return self.context.deleteAll(from, deleteClauses)
+    }
+    
+    /**
+     Deletes all `DynamicObject`s that satisfy the specified conditions.
+     ```
+     transaction.deleteAll(From<Person>().where(\.age > 50))
+     ```
+     - parameter clauseChain: a `FetchChainableBuilderType` clause chain created from a `From` clause
+     - returns: the number of `DynamicObject`s deleted
+     */
+    @discardableResult
+    public func deleteAll<B: FetchChainableBuilderType>(_ clauseChain: B) -> Int? {
        
        CoreStore.assert(
            self.isRunningInAllowedQueue(),
            "Attempted to delete from a \(cs_typeName(self)) outside its designated queue."
        )
        
-        return self.context.deleteAll(from, deleteClauses)
+        return self.context.deleteAll(clauseChain.from, clauseChain.fetchClauses)
    }
    
    
@@ -76,7 +93,7 @@ extension BaseDataTransaction: FetchableSource, QueryableSource {
     - parameter object: a reference to the object created/fetched outside the transaction
     - returns: the `DynamicObject` instance if the object exists in the transaction, or `nil` if not found.
     */
-    public func fetchExisting<T: DynamicObject>(_ object: T) -> T? {
+    public func fetchExisting<D: DynamicObject>(_ object: D) -> D? {
        
        return self.context.fetchExisting(object)
    }
@@ -87,7 +104,7 @@ extension BaseDataTransaction: FetchableSource, QueryableSource {
     - parameter objectID: the `NSManagedObjectID` for the object
     - returns: the `DynamicObject` instance if the object exists in the transaction, or `nil` if not found.
     */
-    public func fetchExisting<T: DynamicObject>(_ objectID: NSManagedObjectID) -> T? {
+    public func fetchExisting<D: DynamicObject>(_ objectID: NSManagedObjectID) -> D? {
        
        return self.context.fetchExisting(objectID)
    }
@@ -98,7 +115,7 @@ extension BaseDataTransaction: FetchableSource, QueryableSource {
     - parameter objects: an array of `DynamicObject`s created/fetched outside the transaction
     - returns: the `DynamicObject` array for objects that exists in the transaction
     */
-    public func fetchExisting<T: DynamicObject, S: Sequence>(_ objects: S) -> [T] where S.Iterator.Element == T {
+    public func fetchExisting<D: DynamicObject, S: Sequence>(_ objects: S) -> [D] where S.Iterator.Element == D {
        
        return self.context.fetchExisting(objects)
    }
@@ -109,7 +126,7 @@ extension BaseDataTransaction: FetchableSource, QueryableSource {
     - parameter objectIDs: the `NSManagedObjectID` array for the objects
     - returns: the `DynamicObject` array for objects that exists in the transaction
     */
-    public func fetchExisting<T: DynamicObject, S: Sequence>(_ objectIDs: S) -> [T] where S.Iterator.Element == NSManagedObjectID {
+    public func fetchExisting<D: DynamicObject, S: Sequence>(_ objectIDs: S) -> [D] where S.Iterator.Element == NSManagedObjectID {
        
        return self.context.fetchExisting(objectIDs)
    }
@@ -121,7 +138,7 @@ extension BaseDataTransaction: FetchableSource, QueryableSource {
     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: the first `DynamicObject` instance that satisfies the specified `FetchClause`s
     */
-    public func fetchOne<T: DynamicObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> T? {
+    public func fetchOne<D>(_ from: From<D>, _ fetchClauses: FetchClause...) -> D? {
        
        CoreStore.assert(
            self.isRunningInAllowedQueue(),
@@ -137,7 +154,7 @@ extension BaseDataTransaction: FetchableSource, QueryableSource {
     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: the first `DynamicObject` instance that satisfies the specified `FetchClause`s
     */
-    public func fetchOne<T: DynamicObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> T? {
+    public func fetchOne<D>(_ from: From<D>, _ fetchClauses: [FetchClause]) -> D? {
        
        CoreStore.assert(
            self.isRunningInAllowedQueue(),
@@ -146,6 +163,27 @@ extension BaseDataTransaction: FetchableSource, QueryableSource {
        return self.context.fetchOne(from, fetchClauses)
    }
    
+    /**
+     Fetches the first `DynamicObject` instance that satisfies the specified `FetchChainableBuilderType` built from a chain of clauses.
+     ```
+     let youngestTeen = transaction.fetchOne(
+         From<MyPersonEntity>()
+             .where(\.age > 18)
+             .orderBy(.ascending(\.age))
+     )
+     ```
+     - parameter clauseChain: a `FetchChainableBuilderType` built from a chain of clauses
+     - returns: the first `DynamicObject` instance that satisfies the specified `FetchChainableBuilderType`
+     */
+    public func fetchOne<B: FetchChainableBuilderType>(_ clauseChain: B) -> B.ObjectType? {
+        
+        CoreStore.assert(
+            self.isRunningInAllowedQueue(),
+            "Attempted to fetch from a \(cs_typeName(self)) outside its designated queue."
+        )
+        return self.context.fetchOne(clauseChain)
+    }
+    
    /**
     Fetches all `DynamicObject` instances that satisfy the specified `FetchClause`s. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     
@@ -153,7 +191,7 @@ extension BaseDataTransaction: FetchableSource, QueryableSource {
     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: all `DynamicObject` instances that satisfy the specified `FetchClause`s
     */
-    public func fetchAll<T: DynamicObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> [T]? {
+    public func fetchAll<D>(_ from: From<D>, _ fetchClauses: FetchClause...) -> [D]? {
        
        CoreStore.assert(
            self.isRunningInAllowedQueue(),
@@ -169,7 +207,7 @@ extension BaseDataTransaction: FetchableSource, QueryableSource {
     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: all `DynamicObject` instances that satisfy the specified `FetchClause`s
     */
-    public func fetchAll<T: DynamicObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> [T]? {
+    public func fetchAll<D>(_ from: From<D>, _ fetchClauses: [FetchClause]) -> [D]? {
        
        CoreStore.assert(
            self.isRunningInAllowedQueue(),
@@ -178,6 +216,27 @@ extension BaseDataTransaction: FetchableSource, QueryableSource {
        return self.context.fetchAll(from, fetchClauses)
    }
    
+    /**
+     Fetches all `DynamicObject` instances that satisfy the specified `FetchChainableBuilderType` built from a chain of clauses.
+     ```
+     let people = transaction.fetchAll(
+         From<MyPersonEntity>()
+             .where(\.age > 18)
+             .orderBy(.ascending(\.age))
+     )
+     ```
+     - parameter clauseChain: a `FetchChainableBuilderType` built from a chain of clauses
+     - returns: all `DynamicObject` instances that satisfy the specified `FetchChainableBuilderType`
+     */
+    public func fetchAll<B: FetchChainableBuilderType>(_ clauseChain: B) -> [B.ObjectType]? {
+        
+        CoreStore.assert(
+            self.isRunningInAllowedQueue(),
+            "Attempted to fetch from a \(cs_typeName(self)) outside its designated queue."
+        )
+        return self.context.fetchAll(clauseChain)
+    }
+    
    /**
     Fetches the number of `DynamicObject`s that satisfy the specified `FetchClause`s. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     
@@ -185,7 +244,7 @@ extension BaseDataTransaction: FetchableSource, QueryableSource {
     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: the number `DynamicObject`s that satisfy the specified `FetchClause`s
     */
-    public func fetchCount<T: DynamicObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> Int? {
+    public func fetchCount<D>(_ from: From<D>, _ fetchClauses: FetchClause...) -> Int? {
        
        CoreStore.assert(
            self.isRunningInAllowedQueue(),
@@ -201,7 +260,7 @@ extension BaseDataTransaction: FetchableSource, QueryableSource {
     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: the number `DynamicObject`s that satisfy the specified `FetchClause`s
     */
-    public func fetchCount<T: DynamicObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> Int? {
+    public func fetchCount<D>(_ from: From<D>, _ fetchClauses: [FetchClause]) -> Int? {
        
        CoreStore.assert(
            self.isRunningInAllowedQueue(),
@@ -210,6 +269,27 @@ extension BaseDataTransaction: FetchableSource, QueryableSource {
        return self.context.fetchCount(from, fetchClauses)
    }
    
+    /**
+     Fetches the number of `DynamicObject`s that satisfy the specified `FetchChainableBuilderType` built from a chain of clauses.
+     ```
+     let numberOfAdults = transaction.fetchCount(
+         From<MyPersonEntity>()
+             .where(\.age > 18)
+             .orderBy(.ascending(\.age))
+     )
+     ```
+     - parameter clauseChain: a `FetchChainableBuilderType` built from a chain of clauses
+     - returns: the number `DynamicObject`s that satisfy the specified `FetchChainableBuilderType`
+     */
+    public func fetchCount<B: FetchChainableBuilderType>(_ clauseChain: B) -> Int? {
+        
+        CoreStore.assert(
+            self.isRunningInAllowedQueue(),
+            "Attempted to fetch from a \(cs_typeName(self)) outside its designated queue."
+        )
+        return self.context.fetchCount(clauseChain)
+    }
+    
    /**
     Fetches the `NSManagedObjectID` for the first `DynamicObject` that satisfies the specified `FetchClause`s. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     
@@ -217,7 +297,7 @@ extension BaseDataTransaction: FetchableSource, QueryableSource {
     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: the `NSManagedObjectID` for the first `DynamicObject` that satisfies the specified `FetchClause`s
     */
-    public func fetchObjectID<T: DynamicObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> NSManagedObjectID? {
+    public func fetchObjectID<D>(_ from: From<D>, _ fetchClauses: FetchClause...) -> NSManagedObjectID? {
        
        CoreStore.assert(
            self.isRunningInAllowedQueue(),
@@ -233,7 +313,7 @@ extension BaseDataTransaction: FetchableSource, QueryableSource {
     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: the `NSManagedObjectID` for the first `DynamicObject` that satisfies the specified `FetchClause`s
     */
-    public func fetchObjectID<T: DynamicObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> NSManagedObjectID? {
+    public func fetchObjectID<D>(_ from: From<D>, _ fetchClauses: [FetchClause]) -> NSManagedObjectID? {
        
        CoreStore.assert(
            self.isRunningInAllowedQueue(),
@@ -242,6 +322,27 @@ extension BaseDataTransaction: FetchableSource, QueryableSource {
        return self.context.fetchObjectID(from, fetchClauses)
    }
    
+    /**
+     Fetches the `NSManagedObjectID` for the first `DynamicObject` that satisfies the specified `FetchChainableBuilderType` built from a chain of clauses.
+     ```
+     let youngestTeenID = transaction.fetchObjectID(
+         From<MyPersonEntity>()
+             .where(\.age > 18)
+             .orderBy(.ascending(\.age))
+     )
+     ```
+     - parameter clauseChain: a `FetchChainableBuilderType` built from a chain of clauses
+     - returns: the `NSManagedObjectID` for the first `DynamicObject` that satisfies the specified `FetchChainableBuilderType`
+     */
+    public func fetchObjectID<B: FetchChainableBuilderType>(_ clauseChain: B) -> NSManagedObjectID? {
+        
+        CoreStore.assert(
+            self.isRunningInAllowedQueue(),
+            "Attempted to fetch from a \(cs_typeName(self)) outside its designated queue."
+        )
+        return self.context.fetchObjectID(clauseChain)
+    }
+    
    /**
     Fetches the `NSManagedObjectID` for all `DynamicObject`s that satisfy the specified `FetchClause`s. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     
@@ -249,7 +350,7 @@ extension BaseDataTransaction: FetchableSource, QueryableSource {
     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: the `NSManagedObjectID` for all `DynamicObject`s that satisfy the specified `FetchClause`s
     */
-    public func fetchObjectIDs<T: DynamicObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> [NSManagedObjectID]? {
+    public func fetchObjectIDs<D>(_ from: From<D>, _ fetchClauses: FetchClause...) -> [NSManagedObjectID]? {
        
        CoreStore.assert(
            self.isRunningInAllowedQueue(),
@@ -265,7 +366,7 @@ extension BaseDataTransaction: FetchableSource, QueryableSource {
     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: the `NSManagedObjectID` for all `DynamicObject`s that satisfy the specified `FetchClause`s
     */
-    public func fetchObjectIDs<T: DynamicObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> [NSManagedObjectID]? {
+    public func fetchObjectIDs<D>(_ from: From<D>, _ fetchClauses: [FetchClause]) -> [NSManagedObjectID]? {
        
        CoreStore.assert(
            self.isRunningInAllowedQueue(),
@@ -274,6 +375,27 @@ extension BaseDataTransaction: FetchableSource, QueryableSource {
        return self.context.fetchObjectIDs(from, fetchClauses)
    }
    
+    /**
+     Fetches the `NSManagedObjectID` for all `DynamicObject`s that satisfy the specified `FetchChainableBuilderType` built from a chain of clauses.
+     ```
+     let idsOfAdults = transaction.fetchObjectIDs(
+         From<MyPersonEntity>()
+             .where(\.age > 18)
+             .orderBy(.ascending(\.age))
+     )
+     ```
+     - parameter clauseChain: a `FetchChainableBuilderType` built from a chain of clauses
+     - returns: the `NSManagedObjectID` for all `DynamicObject`s that satisfy the specified `FetchChainableBuilderType`
+     */
+    public func fetchObjectIDs<B: FetchChainableBuilderType>(_ clauseChain: B) -> [NSManagedObjectID]? {
+        
+        CoreStore.assert(
+            self.isRunningInAllowedQueue(),
+            "Attempted to fetch from a \(cs_typeName(self)) outside its designated queue."
+        )
+        return self.context.fetchObjectIDs(clauseChain)
+    }
+    
    
    // MARK: QueryableSource
    
@@ -287,7 +409,7 @@ extension BaseDataTransaction: FetchableSource, QueryableSource {
     - parameter queryClauses: a series of `QueryClause` instances for the query request. Accepts `Where`, `OrderBy`, `GroupBy`, and `Tweak` clauses.
     - returns: the result of the the query. The type of the return value is specified by the generic type of the `Select<U>` parameter.
     */
-    public func queryValue<T: DynamicObject, U: QueryableAttributeType>(_ from: From<T>, _ selectClause: Select<U>, _ queryClauses: QueryClause...) -> U? {
+    public func queryValue<D, U: QueryableAttributeType>(_ from: From<D>, _ selectClause: Select<D, U>, _ queryClauses: QueryClause...) -> U? {
        
        CoreStore.assert(
            self.isRunningInAllowedQueue(),
@@ -306,7 +428,7 @@ extension BaseDataTransaction: FetchableSource, QueryableSource {
     - parameter queryClauses: a series of `QueryClause` instances for the query request. Accepts `Where`, `OrderBy`, `GroupBy`, and `Tweak` clauses.
     - returns: the result of the the query. The type of the return value is specified by the generic type of the `Select<U>` parameter.
     */
-    public func queryValue<T: DynamicObject, U: QueryableAttributeType>(_ from: From<T>, _ selectClause: Select<U>, _ queryClauses: [QueryClause]) -> U? {
+    public func queryValue<D, U: QueryableAttributeType>(_ from: From<D>, _ selectClause: Select<D, U>, _ queryClauses: [QueryClause]) -> U? {
        
        CoreStore.assert(
            self.isRunningInAllowedQueue(),
@@ -315,6 +437,29 @@ extension BaseDataTransaction: FetchableSource, QueryableSource {
        return self.context.queryValue(from, selectClause, queryClauses)
    }
    
+    /**
+     Queries a property value or aggregate as specified by the `QueryChainableBuilderType` built from a chain of clauses.
+     
+     A "query" differs from a "fetch" in that it only retrieves values already stored in the persistent store. As such, values from unsaved transactions or contexts will not be incorporated in the query result.
+     ```
+     let averageAdultAge = transaction.queryValue(
+         From<MyPersonEntity>()
+             .select(Int.self, .average(\.age))
+             .where(\.age > 18)
+     )
+     ```
+     - parameter clauseChain: a `QueryChainableBuilderType` indicating the property/aggregate to fetch and the series of queries for the request.
+     - returns: the result of the the query as specified by the `QueryChainableBuilderType`
+     */
+    public func queryValue<B: QueryChainableBuilderType>(_ clauseChain: B) -> B.ResultType? where B.ResultType: QueryableAttributeType {
+        
+        CoreStore.assert(
+            self.isRunningInAllowedQueue(),
+            "Attempted to query from a \(cs_typeName(self)) outside its designated queue."
+        )
+        return self.context.queryValue(clauseChain.from, clauseChain.select, clauseChain.queryClauses)
+    }
+    
    /**
     Queries a dictionary of attribute values as specified by the `QueryClause`s. Requires at least a `Select` clause, and optional `Where`, `OrderBy`, `GroupBy`, and `Tweak` clauses.
     
@@ -325,7 +470,7 @@ extension BaseDataTransaction: FetchableSource, QueryableSource {
     - parameter queryClauses: a series of `QueryClause` instances for the query request. Accepts `Where`, `OrderBy`, `GroupBy`, and `Tweak` clauses.
     - returns: the result of the the query. The type of the return value is specified by the generic type of the `Select<U>` parameter.
     */
-    public func queryAttributes<T: DynamicObject>(_ from: From<T>, _ selectClause: Select<NSDictionary>, _ queryClauses: QueryClause...) -> [[String: Any]]? {
+    public func queryAttributes<D>(_ from: From<D>, _ selectClause: Select<D, NSDictionary>, _ queryClauses: QueryClause...) -> [[String: Any]]? {
        
        CoreStore.assert(
            self.isRunningInAllowedQueue(),
@@ -344,7 +489,7 @@ extension BaseDataTransaction: FetchableSource, QueryableSource {
     - parameter queryClauses: a series of `QueryClause` instances for the query request. Accepts `Where`, `OrderBy`, `GroupBy`, and `Tweak` clauses.
     - returns: the result of the the query. The type of the return value is specified by the generic type of the `Select<U>` parameter.
     */
-    public func queryAttributes<T: DynamicObject>(_ from: From<T>, _ selectClause: Select<NSDictionary>, _ queryClauses: [QueryClause]) -> [[String: Any]]? {
+    public func queryAttributes<D>(_ from: From<D>, _ selectClause: Select<D, NSDictionary>, _ queryClauses: [QueryClause]) -> [[String: Any]]? {
        
        CoreStore.assert(
            self.isRunningInAllowedQueue(),
@@ -353,6 +498,38 @@ extension BaseDataTransaction: FetchableSource, QueryableSource {
        return self.context.queryAttributes(from, selectClause, queryClauses)
    }
    
+    /**
+     Queries a dictionary of attribute values or  as specified by the `QueryChainableBuilderType` built from a chain of clauses.
+     
+     A "query" differs from a "fetch" in that it only retrieves values already stored in the persistent store. As such, values from unsaved transactions or contexts will not be incorporated in the query result.
+     ```
+     let results = dataStack.queryAttributes(
+         From<MyPersonEntity>()
+             .select(
+                 NSDictionary.self,
+                 .attribute(\.age, as: "age"),
+                 .count(\.age, as: "numberOfPeople")
+              )
+             .groupBy(\.age)
+     )
+     for dictionary in results! {
+         let age = dictionary["age"] as! Int
+         let count = dictionary["numberOfPeople"] as! Int
+         print("There are \(count) people who are \(age) years old."
+     }
+     ```
+     - parameter clauseChain: a `QueryChainableBuilderType` indicating the properties to fetch and the series of queries for the request.
+     - returns: the result of the the query as specified by the `QueryChainableBuilderType`
+     */
+    public func queryAttributes<B: QueryChainableBuilderType>(_ clauseChain: B) -> [[String: Any]]? where B.ResultType == NSDictionary {
+        
+        CoreStore.assert(
+            self.isRunningInAllowedQueue(),
+            "Attempted to query from a \(cs_typeName(self)) outside its designated queue."
+        )
+        return self.context.queryAttributes(clauseChain.from, clauseChain.select, clauseChain.queryClauses)
+    }
+    
    
    // MARK: FetchableSource, QueryableSource
    
--- a/Sources/BaseDataTransaction.swift
+++ b/Sources/BaseDataTransaction.swift
@@ -50,7 +50,7 @@ public /*abstract*/ class BaseDataTransaction {
     - parameter into: the `Into` clause indicating the destination `NSManagedObject` or `CoreStoreObject` entity type and the destination configuration
     - returns: a new `NSManagedObject` or `CoreStoreObject` instance of the specified entity type.
     */
-    public func create<T: DynamicObject>(_ into: Into<T>) -> T {
+    public func create<D>(_ into: Into<D>) -> D {
        
        let entityClass = into.entityClass
        CoreStore.assert(
@@ -116,12 +116,12 @@ public /*abstract*/ class BaseDataTransaction {
    }
    
    /**
-     Returns an editable proxy of a specified `NSManagedObject`.
+     Returns an editable proxy of a specified `NSManagedObject` or `CoreStoreObject`.
     
-     - parameter object: the `NSManagedObject` type to be edited
-     - returns: an editable proxy for the specified `NSManagedObject`.
+     - parameter object: the `NSManagedObject` or `CoreStoreObject` type to be edited
+     - returns: an editable proxy for the specified `NSManagedObject` or `CoreStoreObject`.
     */
-    public func edit<T: DynamicObject>(_ object: T?) -> T? {
+    public func edit<D: DynamicObject>(_ object: D?) -> D? {
        
        CoreStore.assert(
            self.isRunningInAllowedQueue(),
@@ -139,9 +139,9 @@ public /*abstract*/ class BaseDataTransaction {
     
     - parameter into: an `Into` clause specifying the entity type
     - parameter objectID: the `NSManagedObjectID` for the object to be edited
-     - returns: an editable proxy for the specified `NSManagedObject`.
+     - returns: an editable proxy for the specified `NSManagedObject` or `CoreStoreObject`.
     */
-    public func edit<T: DynamicObject>(_ into: Into<T>, _ objectID: NSManagedObjectID) -> T? {
+    public func edit<D>(_ into: Into<D>, _ objectID: NSManagedObjectID) -> D? {
        
        CoreStore.assert(
            self.isRunningInAllowedQueue(),
@@ -156,11 +156,11 @@ public /*abstract*/ class BaseDataTransaction {
    }
    
    /**
-     Deletes a specified `NSManagedObject`.
+     Deletes a specified `NSManagedObject` or `CoreStoreObject`.
     
-     - parameter object: the `NSManagedObject` to be deleted
+     - parameter object: the `NSManagedObject` or `CoreStoreObject` to be deleted
     */
-    public func delete<T: DynamicObject>(_ object: T?) {
+    public func delete<D: DynamicObject>(_ object: D?) {
        
        CoreStore.assert(
            self.isRunningInAllowedQueue(),
@@ -173,21 +173,21 @@ public /*abstract*/ class BaseDataTransaction {
    }
    
    /**
-     Deletes the specified `NSManagedObject`s.
+     Deletes the specified `NSManagedObject`s or `CoreStoreObject`s.
     
-     - parameter object1: the `NSManagedObject` to be deleted
-     - parameter object2: another `NSManagedObject` to be deleted
-     - parameter objects: other `NSManagedObject`s to be deleted
+     - parameter object1: the `NSManagedObject` or `CoreStoreObject` to be deleted
+     - parameter object2: another `NSManagedObject` or `CoreStoreObject` to be deleted
+     - parameter objects: other `NSManagedObject`s or `CoreStoreObject`s to be deleted
     */
-    public func delete<T: DynamicObject>(_ object1: T?, _ object2: T?, _ objects: T?...) {
+    public func delete<D: DynamicObject>(_ object1: D?, _ object2: D?, _ objects: D?...) {
        
        self.delete(([object1, object2] + objects).flatMap { $0 })
    }
    
    /**
-     Deletes the specified `NSManagedObject`s.
+     Deletes the specified `NSManagedObject`s or `CoreStoreObject`s.
     
-     - parameter objects: the `NSManagedObject`s to be deleted
+     - parameter objects: the `NSManagedObject`s or `CoreStoreObject`s to be deleted
     */
    public func delete<S: Sequence>(_ objects: S) where S.Iterator.Element: DynamicObject {
        
@@ -220,7 +220,7 @@ public /*abstract*/ class BaseDataTransaction {
     - parameter entity: the `DynamicObject` subclass to filter
     - returns: a `Set` of pending `DynamicObject`s of the specified type that were inserted to the transaction.
     */
-    public func insertedObjects<T: DynamicObject>(_ entity: T.Type) -> Set<T> {
+    public func insertedObjects<D: DynamicObject>(_ entity: D.Type) -> Set<D> {
        
        CoreStore.assert(
            self.transactionQueue.cs_isCurrentExecutionContext(),
@@ -257,7 +257,7 @@ public /*abstract*/ class BaseDataTransaction {
     - parameter entity: the `DynamicObject` subclass to filter
     - returns: a `Set` of pending `NSManagedObjectID`s of the specified type that were inserted to the transaction.
     */
-    public func insertedObjectIDs<T: DynamicObject>(_ entity: T.Type) -> Set<NSManagedObjectID> {
+    public func insertedObjectIDs<D: DynamicObject>(_ entity: D.Type) -> Set<NSManagedObjectID> {
        
        CoreStore.assert(
            self.transactionQueue.cs_isCurrentExecutionContext(),
@@ -276,7 +276,7 @@ public /*abstract*/ class BaseDataTransaction {
     - parameter entity: the `DynamicObject` subclass to filter
     - returns: a `Set` of pending `DynamicObject`s of the specified type that were updated in the transaction.
     */
-    public func updatedObjects<T: DynamicObject>(_ entity: T.Type) -> Set<T> {
+    public func updatedObjects<D: DynamicObject>(_ entity: D.Type) -> Set<D> {
        
        CoreStore.assert(
            self.transactionQueue.cs_isCurrentExecutionContext(),
@@ -313,7 +313,7 @@ public /*abstract*/ class BaseDataTransaction {
     - parameter entity: the `DynamicObject` subclass to filter
     - returns: a `Set` of pending `NSManagedObjectID`s of the specified type that were updated in the transaction.
     */
-    public func updatedObjectIDs<T: DynamicObject>(_ entity: T.Type) -> Set<NSManagedObjectID> {
+    public func updatedObjectIDs<D: DynamicObject>(_ entity: D.Type) -> Set<NSManagedObjectID> {
        
        CoreStore.assert(
            self.transactionQueue.cs_isCurrentExecutionContext(),
@@ -332,7 +332,7 @@ public /*abstract*/ class BaseDataTransaction {
     - parameter entity: the `DynamicObject` subclass to filter
     - returns: a `Set` of pending `DynamicObject`s of the specified type that were deleted from the transaction.
     */
-    public func deletedObjects<T: DynamicObject>(_ entity: T.Type) -> Set<T> {
+    public func deletedObjects<D: DynamicObject>(_ entity: D.Type) -> Set<D> {
        
        CoreStore.assert(
            self.transactionQueue.cs_isCurrentExecutionContext(),
@@ -370,7 +370,7 @@ public /*abstract*/ class BaseDataTransaction {
     - parameter entity: the `DynamicObject` subclass to filter
     - returns: a `Set` of pending `NSManagedObjectID`s of the specified type that were deleted from the transaction.
     */
-    public func deletedObjectIDs<T: DynamicObject>(_ entity: T.Type) -> Set<NSManagedObjectID> {
+    public func deletedObjectIDs<D: DynamicObject>(_ entity: D.Type) -> Set<NSManagedObjectID> {
        
        CoreStore.assert(
            self.transactionQueue.cs_isCurrentExecutionContext(),
@@ -438,6 +438,11 @@ public /*abstract*/ class BaseDataTransaction {
        return self.bypassesQueueing || self.transactionQueue.cs_isCurrentExecutionContext()
    }
    
+    deinit {
+        
+        self.context.reset()
+    }
+    
    
    // MARK: Deprecated
    
--- a/Sources/CSAsynchronousDataTransaction.swift
+++ b/Sources/CSAsynchronousDataTransaction.swift
@@ -35,7 +35,7 @@ import CoreData
 - SeeAlso: `AsynchronousDataTransaction`
 */
@objc
-public final class CSAsynchronousDataTransaction: CSBaseDataTransaction {
+public final class CSAsynchronousDataTransaction: CSBaseDataTransaction, CoreStoreObjectiveCType {
    
    /**
     Saves the transaction changes. This method should not be used after the `-commitWithCompletion:` method was already called once.
@@ -54,12 +54,15 @@ public final class CSAsynchronousDataTransaction: CSBaseDataTransaction {
            !self.bridgeToSwift.isCommitted,
            "Attempted to commit a \(cs_typeName(self)) more than once."
        )
-        self.bridgeToSwift.autoCommit { (result) in
+        self.bridgeToSwift.autoCommit { (_, error) in
            
-            switch result {
+            if let error = error {
                
-            case (_, nil):          success?()
-            case (_, let error?):   failure?(error.bridgeToObjectiveC)
+                failure?(error.bridgeToObjectiveC)
+            }
+            else {
+                
+                success?()
            }
        }
    }
@@ -139,9 +142,9 @@ public final class CSAsynchronousDataTransaction: CSBaseDataTransaction {
    
    public typealias SwiftType = AsynchronousDataTransaction
    
-    public override var bridgeToSwift: AsynchronousDataTransaction {
+    public var bridgeToSwift: AsynchronousDataTransaction {
        
-        return super.bridgeToSwift as! AsynchronousDataTransaction
+        return super.swiftTransaction as! AsynchronousDataTransaction
    }
    
    public required init(_ swiftValue: AsynchronousDataTransaction) {
@@ -149,9 +152,9 @@ public final class CSAsynchronousDataTransaction: CSBaseDataTransaction {
        super.init(swiftValue as BaseDataTransaction)
    }
    
-    public required init(_ swiftValue: BaseDataTransaction) {
+    public required override init(_ swiftValue: BaseDataTransaction) {
        
-        super.init(swiftValue as! AsynchronousDataTransaction)
+        super.init(swiftValue)
    }
    
    
--- a/Sources/CSBaseDataTransaction+Querying.swift
+++ b/Sources/CSBaseDataTransaction+Querying.swift
@@ -40,7 +40,7 @@ public extension CSBaseDataTransaction {
    @objc
    public func fetchExistingObject(_ object: NSManagedObject) -> Any? {
        
-        return self.bridgeToSwift.context.fetchExisting(object) as NSManagedObject?
+        return self.swiftTransaction.context.fetchExisting(object) as NSManagedObject?
    }
    
    /**
@@ -52,7 +52,7 @@ public extension CSBaseDataTransaction {
    @objc
    public func fetchExistingObjectWithID(_ objectID: NSManagedObjectID) -> Any? {
        
-        return self.bridgeToSwift.context.fetchExisting(objectID) as NSManagedObject?
+        return self.swiftTransaction.context.fetchExisting(objectID) as NSManagedObject?
    }
    
    /**
@@ -64,7 +64,7 @@ public extension CSBaseDataTransaction {
    @objc
    public func fetchExistingObjects(_ objects: [NSManagedObject]) -> [Any] {
        
-        return self.bridgeToSwift.context.fetchExisting(objects) as [NSManagedObject]
+        return self.swiftTransaction.context.fetchExisting(objects) as [NSManagedObject]
    }
    
    /**
@@ -76,7 +76,7 @@ public extension CSBaseDataTransaction {
    @objc
    public func fetchExistingObjectsWithIDs(_ objectIDs: [NSManagedObjectID]) -> [Any] {
        
-        return self.bridgeToSwift.context.fetchExisting(objectIDs) as [NSManagedObject]
+        return self.swiftTransaction.context.fetchExisting(objectIDs) as [NSManagedObject]
    }
    
    /**
@@ -90,10 +90,10 @@ public extension CSBaseDataTransaction {
    public func fetchOneFrom(_ from: CSFrom, fetchClauses: [CSFetchClause]) -> Any? {
        
        CoreStore.assert(
-            self.bridgeToSwift.isRunningInAllowedQueue(),
+            self.swiftTransaction.isRunningInAllowedQueue(),
            "Attempted to fetch from a \(cs_typeName(self)) outside its designated queue."
        )
-        return self.bridgeToSwift.context.fetchOne(from, fetchClauses)
+        return self.swiftTransaction.context.fetchOne(from, fetchClauses)
    }
    
    /**
@@ -107,10 +107,10 @@ public extension CSBaseDataTransaction {
    public func fetchAllFrom(_ from: CSFrom, fetchClauses: [CSFetchClause]) -> [Any]? {
        
        CoreStore.assert(
-            self.bridgeToSwift.isRunningInAllowedQueue(),
+            self.swiftTransaction.isRunningInAllowedQueue(),
            "Attempted to fetch from a \(cs_typeName(self)) outside its designated queue."
        )
-        return self.bridgeToSwift.context.fetchAll(from, fetchClauses)
+        return self.swiftTransaction.context.fetchAll(from, fetchClauses)
    }
    
    /**
@@ -124,10 +124,10 @@ public extension CSBaseDataTransaction {
    public func fetchCountFrom(_ from: CSFrom, fetchClauses: [CSFetchClause]) -> NSNumber? {
        
        CoreStore.assert(
-            self.bridgeToSwift.isRunningInAllowedQueue(),
+            self.swiftTransaction.isRunningInAllowedQueue(),
            "Attempted to fetch from a \(cs_typeName(self)) outside its designated queue."
        )
-        return self.bridgeToSwift.context
+        return self.swiftTransaction.context
            .fetchCount(from, fetchClauses)
            .flatMap { NSNumber(value: $0) }
    }
@@ -143,10 +143,10 @@ public extension CSBaseDataTransaction {
    public func fetchObjectIDFrom(_ from: CSFrom, fetchClauses: [CSFetchClause]) -> NSManagedObjectID? {
        
        CoreStore.assert(
-            self.bridgeToSwift.isRunningInAllowedQueue(),
+            self.swiftTransaction.isRunningInAllowedQueue(),
            "Attempted to fetch from a \(cs_typeName(self)) outside its designated queue."
        )
-        return self.bridgeToSwift.context.fetchObjectID(from, fetchClauses)
+        return self.swiftTransaction.context.fetchObjectID(from, fetchClauses)
    }
    
    /**
@@ -163,10 +163,10 @@ public extension CSBaseDataTransaction {
    public func queryValueFrom(_ from: CSFrom, selectClause: CSSelect, queryClauses: [CSQueryClause]) -> Any? {
        
        CoreStore.assert(
-            self.bridgeToSwift.isRunningInAllowedQueue(),
+            self.swiftTransaction.isRunningInAllowedQueue(),
            "Attempted to query from a \(cs_typeName(self)) outside its designated queue."
        )
-        return self.bridgeToSwift.context.queryValue(from, selectClause, queryClauses)
+        return self.swiftTransaction.context.queryValue(from, selectClause, queryClauses)
    }
    
    /**
@@ -183,9 +183,9 @@ public extension CSBaseDataTransaction {
    public func queryAttributesFrom(_ from: CSFrom, selectClause: CSSelect, queryClauses: [CSQueryClause]) -> [[String: Any]]? {
        
        CoreStore.assert(
-            self.bridgeToSwift.isRunningInAllowedQueue(),
+            self.swiftTransaction.isRunningInAllowedQueue(),
            "Attempted to query from a \(cs_typeName(self)) outside its designated queue."
        )
-        return self.bridgeToSwift.context.queryAttributes(from, selectClause, queryClauses)
+        return self.swiftTransaction.context.queryAttributes(from, selectClause, queryClauses)
    }
 }
--- a/Sources/CSBaseDataTransaction.swift
+++ b/Sources/CSBaseDataTransaction.swift
@@ -35,7 +35,7 @@ import CoreData
 - SeeAlso: `BaseDataTransaction`
 */
@objc
-public class CSBaseDataTransaction: NSObject, CoreStoreObjectiveCType {
+public class CSBaseDataTransaction: NSObject {
    
    // MARK: Object management
    
@@ -45,7 +45,7 @@ public class CSBaseDataTransaction: NSObject, CoreStoreObjectiveCType {
    @objc
    public var hasChanges: Bool {
        
-        return self.bridgeToSwift.hasChanges
+        return self.swiftTransaction.hasChanges
    }
    
    /**
@@ -57,7 +57,7 @@ public class CSBaseDataTransaction: NSObject, CoreStoreObjectiveCType {
    @objc
    public func createInto(_ into: CSInto) -> Any {
        
-        return self.bridgeToSwift.create(into.bridgeToSwift)
+        return self.swiftTransaction.create(into.bridgeToSwift)
    }
    
    /**
@@ -69,7 +69,7 @@ public class CSBaseDataTransaction: NSObject, CoreStoreObjectiveCType {
    @objc
    public func editObject(_ object: NSManagedObject?) -> Any? {
        
-        return self.bridgeToSwift.edit(object)
+        return self.swiftTransaction.edit(object)
    }
    
    /**
@@ -82,7 +82,7 @@ public class CSBaseDataTransaction: NSObject, CoreStoreObjectiveCType {
    @objc
    public func editInto(_ into: CSInto, objectID: NSManagedObjectID) -> Any? {
        
-        return self.bridgeToSwift.edit(into.bridgeToSwift, objectID)
+        return self.swiftTransaction.edit(into.bridgeToSwift, objectID)
    }

    /**
@@ -93,7 +93,7 @@ public class CSBaseDataTransaction: NSObject, CoreStoreObjectiveCType {
    @objc
    public func deleteObject(_ object: NSManagedObject?) {
        
-        self.bridgeToSwift.delete(object)
+        self.swiftTransaction.delete(object)
    }
    
    /**
@@ -104,7 +104,7 @@ public class CSBaseDataTransaction: NSObject, CoreStoreObjectiveCType {
    @objc
    public func deleteObjects(_ objects: [NSManagedObject]) {
        
-        self.bridgeToSwift.delete(objects)
+        self.swiftTransaction.delete(objects)
    }
    
    /**
@@ -113,7 +113,7 @@ public class CSBaseDataTransaction: NSObject, CoreStoreObjectiveCType {
    @objc
    public func refreshAndMergeAllObjects() {
        
-        self.bridgeToSwift.refreshAndMergeAllObjects()
+        self.swiftTransaction.refreshAndMergeAllObjects()
    }
    
    
@@ -128,7 +128,7 @@ public class CSBaseDataTransaction: NSObject, CoreStoreObjectiveCType {
    @objc
    public func insertedObjectsOfType(_ entity: NSManagedObject.Type) -> Set<NSManagedObject> {
        
-        return self.bridgeToSwift.insertedObjects(entity)
+        return self.swiftTransaction.insertedObjects(entity)
    }
    
    /**
@@ -139,7 +139,7 @@ public class CSBaseDataTransaction: NSObject, CoreStoreObjectiveCType {
    @objc
    public func insertedObjectIDs() -> Set<NSManagedObjectID> {
        
-        return self.bridgeToSwift.insertedObjectIDs()
+        return self.swiftTransaction.insertedObjectIDs()
    }
    
    /**
@@ -151,7 +151,7 @@ public class CSBaseDataTransaction: NSObject, CoreStoreObjectiveCType {
    @objc
    public func insertedObjectIDsOfType(_ entity: NSManagedObject.Type) -> Set<NSManagedObjectID> {
        
-        return self.bridgeToSwift.insertedObjectIDs(entity)
+        return self.swiftTransaction.insertedObjectIDs(entity)
    }
    
    /**
@@ -163,7 +163,7 @@ public class CSBaseDataTransaction: NSObject, CoreStoreObjectiveCType {
    @objc
    public func updatedObjectsOfType(_ entity: NSManagedObject.Type) -> Set<NSManagedObject> {
        
-        return self.bridgeToSwift.updatedObjects(entity)
+        return self.swiftTransaction.updatedObjects(entity)
    }
    
    /**
@@ -174,7 +174,7 @@ public class CSBaseDataTransaction: NSObject, CoreStoreObjectiveCType {
    @objc
    public func updatedObjectIDs() -> Set<NSManagedObjectID> {
        
-        return self.bridgeToSwift.updatedObjectIDs()
+        return self.swiftTransaction.updatedObjectIDs()
    }
    
    /**
@@ -186,7 +186,7 @@ public class CSBaseDataTransaction: NSObject, CoreStoreObjectiveCType {
    @objc
    public func updatedObjectIDsOfType(_ entity: NSManagedObject.Type) -> Set<NSManagedObjectID> {
        
-        return self.bridgeToSwift.updatedObjectIDs(entity)
+        return self.swiftTransaction.updatedObjectIDs(entity)
    }
    
    /**
@@ -198,7 +198,7 @@ public class CSBaseDataTransaction: NSObject, CoreStoreObjectiveCType {
    @objc
    public func deletedObjectsOfType(_ entity: NSManagedObject.Type) -> Set<NSManagedObject> {
        
-        return self.bridgeToSwift.deletedObjects(entity)
+        return self.swiftTransaction.deletedObjects(entity)
    }
    
    /**
@@ -209,7 +209,7 @@ public class CSBaseDataTransaction: NSObject, CoreStoreObjectiveCType {
    @objc
    public func deletedObjectIDs() -> Set<NSManagedObjectID> {
        
-        return self.bridgeToSwift.deletedObjectIDs()
+        return self.swiftTransaction.deletedObjectIDs()
    }

    /**
@@ -221,7 +221,7 @@ public class CSBaseDataTransaction: NSObject, CoreStoreObjectiveCType {
    @objc
    public func deletedObjectIDsOfType(_ entity: NSManagedObject.Type) -> Set<NSManagedObjectID> {
        
-        return self.bridgeToSwift.deletedObjectIDs(entity)
+        return self.swiftTransaction.deletedObjectIDs(entity)
    }
    
    
@@ -229,7 +229,7 @@ public class CSBaseDataTransaction: NSObject, CoreStoreObjectiveCType {
    
    public override var hash: Int {
        
-        return ObjectIdentifier(self.bridgeToSwift).hashValue
+        return ObjectIdentifier(self.swiftTransaction).hashValue
    }
    
    public override func isEqual(_ object: Any?) -> Bool {
@@ -238,28 +238,20 @@ public class CSBaseDataTransaction: NSObject, CoreStoreObjectiveCType {
            
            return false
        }
-        return self.bridgeToSwift === object.bridgeToSwift
+        return self.swiftTransaction === object.swiftTransaction
    }
    
    
-    // MARK: CoreStoreObjectiveCType
+    // MARK: Internal
    
-    public required init(_ swiftValue: BaseDataTransaction) {
+    internal let swiftTransaction: BaseDataTransaction
+    
+    internal init(_ swiftValue: BaseDataTransaction) {
        
        self.swiftTransaction = swiftValue
        super.init()
    }
    
-    public var bridgeToSwift: BaseDataTransaction {
-        
-        return self.swiftTransaction
-    }
-    
-    
-    // MARK: Private
-    
-    private let swiftTransaction: BaseDataTransaction
-    
    
    // MARK: Deprecated
    
@@ -267,20 +259,20 @@ public class CSBaseDataTransaction: NSObject, CoreStoreObjectiveCType {
    @objc
    public func insertedObjects() -> Set<NSManagedObject> {
        
-        return self.bridgeToSwift.insertedObjects()
+        return self.swiftTransaction.insertedObjects()
    }
    
    @available(*, deprecated, message: "Use -[updatedObjectsOfType:] and pass the specific entity class")
    @objc
    public func updatedObjects() -> Set<NSManagedObject> {
        
-        return self.bridgeToSwift.updatedObjects()
+        return self.swiftTransaction.updatedObjects()
    }
    
    @available(*, deprecated, message: "Use -[deletedObjectsOfType:] and pass the specific entity class")
    @objc
    public func deletedObjects() -> Set<NSManagedObject> {
        
-        return self.bridgeToSwift.deletedObjects()
+        return self.swiftTransaction.deletedObjects()
    }
 }
--- a/Sources/CSFrom.swift
+++ b/Sources/CSFrom.swift
@@ -145,7 +145,7 @@ public final class CSFrom: NSObject {
    
    public let bridgeToSwift: From<NSManagedObject>
    
-    public init<T: NSManagedObject>(_ swiftValue: From<T>) {
+    public init<D: NSManagedObject>(_ swiftValue: From<D>) {
        
        self.bridgeToSwift = swiftValue.downcast()
        super.init()
@@ -155,7 +155,7 @@ public final class CSFrom: NSObject {

 // MARK: - From

-extension From where T: NSManagedObject {
+extension From where D: NSManagedObject {
    
    // MARK: CoreStoreSwiftType
    
--- a/Sources/CSGroupBy.swift
+++ b/Sources/CSGroupBy.swift
@@ -35,13 +35,13 @@ import CoreData
 - SeeAlso: `GroupBy`
 */
@objc
-public final class CSGroupBy: NSObject, CSQueryClause, CoreStoreObjectiveCType {
+public final class CSGroupBy: NSObject, CSQueryClause {
    
    /**
     The list of key path strings to group results with
     */
    @objc
-    public var keyPaths: [KeyPath] {
+    public var keyPaths: [KeyPathString] {
        
        return self.bridgeToSwift.keyPaths
    }
@@ -52,7 +52,7 @@ public final class CSGroupBy: NSObject, CSQueryClause, CoreStoreObjectiveCType {
     - parameter keyPath: a key path string to group results with
     */
    @objc
-    public convenience init(keyPath: KeyPath) {
+    public convenience init(keyPath: KeyPathString) {
        
        self.init(GroupBy(keyPath))
    }
@@ -63,7 +63,7 @@ public final class CSGroupBy: NSObject, CSQueryClause, CoreStoreObjectiveCType {
     - parameter keyPaths: a list of key path strings to group results with
     */
    @objc
-    public convenience init(keyPaths: [KeyPath]) {
+    public convenience init(keyPaths: [KeyPathString]) {
        
        self.init(GroupBy(keyPaths))
    }
@@ -102,11 +102,11 @@ public final class CSGroupBy: NSObject, CSQueryClause, CoreStoreObjectiveCType {
    
    // MARK: CoreStoreObjectiveCType
    
-    public let bridgeToSwift: GroupBy
+    public let bridgeToSwift: GroupBy<NSManagedObject>
    
-    public init(_ swiftValue: GroupBy) {
+    public init<D: NSManagedObject>(_ swiftValue: GroupBy<D>) {
        
-        self.bridgeToSwift = swiftValue
+        self.bridgeToSwift = swiftValue.downcast()
        super.init()
    }
 }
@@ -114,7 +114,7 @@ public final class CSGroupBy: NSObject, CSQueryClause, CoreStoreObjectiveCType {

 // MARK: - GroupBy

-extension GroupBy: CoreStoreSwiftType {
+extension GroupBy where D: NSManagedObject {
    
    // MARK: CoreStoreSwiftType
    
@@ -122,4 +122,12 @@ extension GroupBy: CoreStoreSwiftType {
        
        return CSGroupBy(self)
    }
+    
+    
+    // MARK: FilePrivate
+    
+    fileprivate func downcast() -> GroupBy<NSManagedObject> {
+        
+        return GroupBy<NSManagedObject>(self.keyPaths)
+    }
 }
--- a/Sources/CSInto.swift
+++ b/Sources/CSInto.swift
@@ -112,7 +112,7 @@ public final class CSInto: NSObject {
    
    public let bridgeToSwift: Into<NSManagedObject>
    
-    public required init<T: NSManagedObject>(_ swiftValue: Into<T>) {
+    public required init<D: NSManagedObject>(_ swiftValue: Into<D>) {
        
        self.bridgeToSwift = swiftValue.downcast()
        super.init()
@@ -122,7 +122,7 @@ public final class CSInto: NSObject {

 // MARK: - Into

-extension Into where T: NSManagedObject {
+extension Into where D: NSManagedObject {
    
    // MARK: CoreStoreSwiftType
    
--- a/Sources/CSListMonitor.swift
+++ b/Sources/CSListMonitor.swift
@@ -560,7 +560,6 @@ extension ListMonitor where ListMonitor.ObjectType: NSManagedObject {
    
    fileprivate func downcast() -> ListMonitor<NSManagedObject> {
        
-        @inline(__always)
        func noWarnUnsafeBitCast<T, U>(_ x: T, to type: U.Type) -> U {
            
            return unsafeBitCast(x, to: type)
--- a/Sources/CSListObserver.swift
+++ b/Sources/CSListObserver.swift
@@ -42,7 +42,7 @@ import CoreData
 */
@available(OSX 10.12, *)
@objc
-public protocol CSListObserver: class, AnyObject {
+public protocol CSListObserver: class {
    
    /**
     Handles processing just before a change to the observed list occurs
--- a/Sources/CSObjectMonitor.swift
+++ b/Sources/CSObjectMonitor.swift
@@ -152,7 +152,6 @@ extension ObjectMonitor where ObjectMonitor.ObjectType: NSManagedObject {
    
    fileprivate func downcast() -> ObjectMonitor<NSManagedObject> {
        
-        @inline(__always)
        func noWarnUnsafeBitCast<T, U>(_ x: T, to type: U.Type) -> U {
            
            return unsafeBitCast(x, to: type)
--- a/Sources/CSObjectObserver.swift
+++ b/Sources/CSObjectObserver.swift
@@ -40,7 +40,7 @@ import CoreData
 */
@available(OSX 10.12, *)
@objc
-public protocol CSObjectObserver: class, AnyObject {
+public protocol CSObjectObserver: class {
    
    /**
     Handles processing just before a change to the observed `object` occurs
--- a/Sources/CSOrderBy.swift
+++ b/Sources/CSOrderBy.swift
@@ -35,7 +35,7 @@ import CoreData
 - SeeAlso: `OrderBy`
 */
@objc
-public final class CSOrderBy: NSObject, CSFetchClause, CSQueryClause, CSDeleteClause, CoreStoreObjectiveCType {
+public final class CSOrderBy: NSObject, CSFetchClause, CSQueryClause, CSDeleteClause {
    
    /**
     The list of sort descriptors
@@ -110,11 +110,11 @@ public final class CSOrderBy: NSObject, CSFetchClause, CSQueryClause, CSDeleteCl
    
    // MARK: CoreStoreObjectiveCType
    
-    public let bridgeToSwift: OrderBy
+    public let bridgeToSwift: OrderBy<NSManagedObject>
    
-    public init(_ swiftValue: OrderBy) {
+    public init<D: NSManagedObject>(_ swiftValue: OrderBy<D>) {
        
-        self.bridgeToSwift = swiftValue
+        self.bridgeToSwift = swiftValue.downcast()
        super.init()
    }
 }
@@ -122,7 +122,7 @@ public final class CSOrderBy: NSObject, CSFetchClause, CSQueryClause, CSDeleteCl

 // MARK: - OrderBy

-extension OrderBy: CoreStoreSwiftType {
+extension OrderBy where D: NSManagedObject {
    
    // MARK: CoreStoreSwiftType
    
@@ -130,4 +130,12 @@ extension OrderBy: CoreStoreSwiftType {
        
        return CSOrderBy(self)
    }
+    
+    
+    // MARK: FilePrivate
+    
+    fileprivate func downcast() -> OrderBy<NSManagedObject> {
+        
+        return OrderBy<NSManagedObject>(self.sortDescriptors)
+    }
 }
--- a/Sources/CSSectionBy.swift
+++ b/Sources/CSSectionBy.swift
@@ -36,7 +36,7 @@ import CoreData
 */
@available(OSX 10.12, *)
@objc
-public final class CSSectionBy: NSObject, CoreStoreObjectiveCType {
+public final class CSSectionBy: NSObject {
    
    /**
     Initializes a `CSSectionBy` clause with the key path to use to group `CSListMonitor` objects into sections
@@ -45,9 +45,9 @@ public final class CSSectionBy: NSObject, CoreStoreObjectiveCType {
     - returns: a `CSSectionBy` clause with the key path to use to group `CSListMonitor` objects into sections
     */
    @objc
-    public static func keyPath(_ sectionKeyPath: KeyPath) -> CSSectionBy {
+    public static func keyPath(_ sectionKeyPath: KeyPathString) -> CSSectionBy {
        
-        return self.init(SectionBy(sectionKeyPath))
+        return self.init(SectionBy<NSManagedObject>(sectionKeyPath))
    }
    
    /**
@@ -58,9 +58,9 @@ public final class CSSectionBy: NSObject, CoreStoreObjectiveCType {
     - returns: a `CSSectionBy` clause with the key path to use to group `CSListMonitor` objects into sections
     */
    @objc
-    public static func keyPath(_ sectionKeyPath: KeyPath, sectionIndexTransformer: @escaping (_ sectionName: String?) -> String?) -> CSSectionBy {
+    public static func keyPath(_ sectionKeyPath: KeyPathString, sectionIndexTransformer: @escaping (_ sectionName: String?) -> String?) -> CSSectionBy {
        
-        return self.init(SectionBy(sectionKeyPath, sectionIndexTransformer))
+        return self.init(SectionBy<NSManagedObject>(sectionKeyPath, sectionIndexTransformer))
    }
    
    
@@ -74,11 +74,11 @@ public final class CSSectionBy: NSObject, CoreStoreObjectiveCType {
    
    // MARK: CoreStoreObjectiveCType
    
-    public let bridgeToSwift: SectionBy
+    public let bridgeToSwift: SectionBy<NSManagedObject>
    
-    public init(_ swiftValue: SectionBy) {
+    public init<D>(_ swiftValue: SectionBy<D>) {
        
-        self.bridgeToSwift = swiftValue
+        self.bridgeToSwift = swiftValue.downcast()
        super.init()
    }
 }
@@ -87,7 +87,7 @@ public final class CSSectionBy: NSObject, CoreStoreObjectiveCType {
 // MARK: - SectionBy

@available(OSX 10.12, *)
-extension SectionBy: CoreStoreSwiftType {
+extension SectionBy {
    
    // MARK: CoreStoreSwiftType
    
@@ -95,4 +95,12 @@ extension SectionBy: CoreStoreSwiftType {
        
        return CSSectionBy(self)
    }
+    
+    
+    // MARK: FilePrivate
+    
+    fileprivate func downcast() -> SectionBy<NSManagedObject> {
+        
+        return SectionBy<NSManagedObject>(self.sectionKeyPath, self.sectionIndexTransformer)
+    }
 }
--- a/Sources/CSSelect.swift
+++ b/Sources/CSSelect.swift
@@ -35,7 +35,7 @@ import CoreData
 - SeeAlso: `SelectTerm`
 */
@objc
-public final class CSSelectTerm: NSObject, CoreStoreObjectiveCType {
+public final class CSSelectTerm: NSObject {
    
    /**
     Provides a `CSSelectTerm` to a `CSSelect` clause for querying an entity attribute.
@@ -48,7 +48,7 @@ public final class CSSelectTerm: NSObject, CoreStoreObjectiveCType {
     - parameter keyPath: the attribute name
     */
    @objc
-    public convenience init(keyPath: KeyPath) {
+    public convenience init(keyPath: KeyPathString) {

        self.init(.attribute(keyPath))
    }
@@ -65,7 +65,7 @@ public final class CSSelectTerm: NSObject, CoreStoreObjectiveCType {
     - returns: a `CSSelectTerm` to a `CSSelect` clause for querying the average value of an attribute
     */
    @objc
-    public static func average(_ keyPath: KeyPath, as alias: KeyPath?) -> CSSelectTerm {
+    public static func average(_ keyPath: KeyPathString, as alias: KeyPathString?) -> CSSelectTerm {
        
        return self.init(.average(keyPath, as: alias))
    }
@@ -82,7 +82,7 @@ public final class CSSelectTerm: NSObject, CoreStoreObjectiveCType {
     - returns: a `SelectTerm` to a `Select` clause for a count query
     */
    @objc
-    public static func count(_ keyPath: KeyPath, as alias: KeyPath?) -> CSSelectTerm {
+    public static func count(_ keyPath: KeyPathString, as alias: KeyPathString?) -> CSSelectTerm {
        
        return self.init(.count(keyPath, as: alias))
    }
@@ -99,7 +99,7 @@ public final class CSSelectTerm: NSObject, CoreStoreObjectiveCType {
     - returns: a `CSSelectTerm` to a `CSSelect` clause for querying the maximum value for an attribute
     */
    @objc
-    public static func maximum(_ keyPath: KeyPath, as alias: KeyPath?) -> CSSelectTerm {
+    public static func maximum(_ keyPath: KeyPathString, as alias: KeyPathString?) -> CSSelectTerm {
        
        return self.init(.maximum(keyPath, as: alias))
    }
@@ -116,7 +116,7 @@ public final class CSSelectTerm: NSObject, CoreStoreObjectiveCType {
     - returns: a `CSSelectTerm` to a `CSSelect` clause for querying the minimum value for an attribute
     */
    @objc
-    public static func minimum(_ keyPath: KeyPath, as alias: KeyPath?) -> CSSelectTerm {
+    public static func minimum(_ keyPath: KeyPathString, as alias: KeyPathString?) -> CSSelectTerm {
        
        return self.init(.minimum(keyPath, as: alias))
    }
@@ -133,7 +133,7 @@ public final class CSSelectTerm: NSObject, CoreStoreObjectiveCType {
     - returns: a `CSSelectTerm` to a `CSSelect` clause for querying the sum value for an attribute
     */
    @objc
-    public static func sum(_ keyPath: KeyPath, as alias: KeyPath?) -> CSSelectTerm {
+    public static func sum(_ keyPath: KeyPathString, as alias: KeyPathString?) -> CSSelectTerm {
        
        return self.init(.sum(keyPath, as: alias))
    }
@@ -150,7 +150,7 @@ public final class CSSelectTerm: NSObject, CoreStoreObjectiveCType {
     - returns: a `SelectTerm` to a `Select` clause for querying the sum value for an attribute
     */
    @objc
-    public static func objectIDAs(_ alias: KeyPath? = nil) -> CSSelectTerm {
+    public static func objectIDAs(_ alias: KeyPathString? = nil) -> CSSelectTerm {
        
        return self.init(.objectID(as: alias))
    }
@@ -175,11 +175,11 @@ public final class CSSelectTerm: NSObject, CoreStoreObjectiveCType {
    
    // MARK: CoreStoreObjectiveCType
    
-    public let bridgeToSwift: SelectTerm
+    public let bridgeToSwift: SelectTerm<NSManagedObject>
    
-    public init(_ swiftValue: SelectTerm) {
+    public init<D: NSManagedObject>(_ swiftValue: SelectTerm<D>) {
        
-        self.bridgeToSwift = swiftValue
+        self.bridgeToSwift = swiftValue.downcast()
        super.init()
    }
 }
@@ -187,7 +187,7 @@ public final class CSSelectTerm: NSObject, CoreStoreObjectiveCType {

 // MARK: - SelectTerm

-extension SelectTerm: CoreStoreSwiftType {
+extension SelectTerm where D: NSManagedObject {
    
    // MARK: CoreStoreSwiftType
    
@@ -195,6 +195,24 @@ extension SelectTerm: CoreStoreSwiftType {
        
        return CSSelectTerm(self)
    }
+    
+    
+    // MARK: FilePrivate
+    
+    fileprivate func downcast() -> SelectTerm<NSManagedObject> {
+        
+        switch self {
+            
+        case ._attribute(let keyPath):
+            return SelectTerm<NSManagedObject>._attribute(keyPath)
+            
+        case ._aggregate(let function, let keyPath, let alias, let nativeType):
+            return SelectTerm<NSManagedObject>._aggregate(function: function, keyPath: keyPath, alias: alias, nativeType: nativeType)
+            
+        case ._identity(let alias, let nativeType):
+            return SelectTerm<NSManagedObject>._identity(alias: alias, nativeType: nativeType)
+        }
+    }
 }


@@ -218,9 +236,10 @@ public final class CSSelect: NSObject {
     ```
     - parameter numberTerm: the `CSSelectTerm` specifying the attribute/aggregate value to query
     */
+    @objc
    public convenience init(numberTerm: CSSelectTerm) {
        
-        self.init(Select<NSNumber>(numberTerm.bridgeToSwift))
+        self.init(Select<NSManagedObject, NSNumber>(numberTerm.bridgeToSwift))
    }
    
    /**
@@ -233,9 +252,10 @@ public final class CSSelect: NSObject {
     ```
     - parameter decimalTerm: the `CSSelectTerm` specifying the attribute/aggregate value to query
     */
+    @objc
    public convenience init(decimalTerm: CSSelectTerm) {
        
-        self.init(Select<NSDecimalNumber>(decimalTerm.bridgeToSwift))
+        self.init(Select<NSManagedObject, NSDecimalNumber>(decimalTerm.bridgeToSwift))
    }
    
    /**
@@ -248,9 +268,10 @@ public final class CSSelect: NSObject {
     ```
     - parameter stringTerm: the `CSSelectTerm` specifying the attribute/aggregate value to query
     */
+    @objc
    public convenience init(stringTerm: CSSelectTerm) {
        
-        self.init(Select<NSString>(stringTerm.bridgeToSwift))
+        self.init(Select<NSManagedObject, NSString>(stringTerm.bridgeToSwift))
    }
    
    /**
@@ -263,9 +284,10 @@ public final class CSSelect: NSObject {
     ```
     - parameter dateTerm: the `CSSelectTerm` specifying the attribute/aggregate value to query
     */
+    @objc
    public convenience init(dateTerm: CSSelectTerm) {
        
-        self.init(Select<Date>(dateTerm.bridgeToSwift))
+        self.init(Select<NSManagedObject, Date>(dateTerm.bridgeToSwift))
    }
    
    /**
@@ -278,9 +300,10 @@ public final class CSSelect: NSObject {
     ```
     - parameter dataTerm: the `CSSelectTerm` specifying the attribute/aggregate value to query
     */
+    @objc
    public convenience init(dataTerm: CSSelectTerm) {
        
-        self.init(Select<Data>(dataTerm.bridgeToSwift))
+        self.init(Select<NSManagedObject, Data>(dataTerm.bridgeToSwift))
    }
    
    /**
@@ -292,9 +315,10 @@ public final class CSSelect: NSObject {
        // ...
     ```
     */
+    @objc
    public convenience init(objectIDTerm: ()) {
        
-        self.init(Select<NSManagedObjectID>(.objectID()))
+        self.init(Select<NSManagedObject, NSManagedObjectID>(.objectID()))
    }
    
    /**
@@ -307,9 +331,10 @@ public final class CSSelect: NSObject {
     - parameter term: the `CSSelectTerm` specifying the attribute/aggregate value to query
     - returns: a `CSSelect` clause for querying an entity attribute
     */
+    @objc
    public static func dictionaryForTerm(_ term: CSSelectTerm) -> CSSelect {
        
-        return self.init(Select<NSDictionary>(term.bridgeToSwift))
+        return self.init(Select<NSManagedObject, NSDictionary>(term.bridgeToSwift))
    }
    
    /**
@@ -325,9 +350,10 @@ public final class CSSelect: NSObject {
     - parameter terms: the `CSSelectTerm`s specifying the attribute/aggregate values to query
     - returns: a `CSSelect` clause for querying an entity attribute
     */
+    @objc
    public static func dictionaryForTerms(_ terms: [CSSelectTerm]) -> CSSelect {
        
-        return self.init(Select<NSDictionary>(terms.map { $0.bridgeToSwift }))
+        return self.init(Select<NSManagedObject, NSDictionary>(terms.map { $0.bridgeToSwift }))
    }
    
    
@@ -357,18 +383,18 @@ public final class CSSelect: NSObject {
    
    // MARK: CoreStoreObjectiveCType
    
-    public init<T: QueryableAttributeType>(_ swiftValue: Select<T>) {
+    public init<D: NSManagedObject, T: QueryableAttributeType>(_ swiftValue: Select<D, T>) {
        
        self.attributeType = T.cs_rawAttributeType
-        self.selectTerms = swiftValue.selectTerms
+        self.selectTerms = swiftValue.selectTerms.map({ $0.downcast() })
        self.bridgeToSwift = swiftValue
        super.init()
    }
    
-    public init<T: SelectResultType>(_ swiftValue: Select<T>) {
+    public init<D: NSManagedObject, T>(_ swiftValue: Select<D, T>) {
        
        self.attributeType = .undefinedAttributeType
-        self.selectTerms = swiftValue.selectTerms
+        self.selectTerms = swiftValue.selectTerms.map({ $0.downcast() })
        self.bridgeToSwift = swiftValue
        super.init()
    }
@@ -377,7 +403,95 @@ public final class CSSelect: NSObject {
    // MARK: Internal
    
    internal let attributeType: NSAttributeType
-    internal let selectTerms: [SelectTerm]
+    internal let selectTerms: [SelectTerm<NSManagedObject>]
+    
+    
+    // MARK: Internal
+    
+    internal func applyToFetchRequest(_ fetchRequest: NSFetchRequest<NSFetchRequestResult>) {
+        
+        fetchRequest.includesPendingChanges = false
+        fetchRequest.resultType = .dictionaryResultType
+        
+        func attributeDescription(for keyPath: String, in entity: NSEntityDescription) -> NSAttributeDescription? {
+            
+            let components = keyPath.components(separatedBy: ".")
+            switch components.count {
+                
+            case 0:
+                return nil
+                
+            case 1:
+                return entity.attributesByName[components[0]]
+                
+            default:
+                guard let relationship = entity.relationshipsByName[components[0]],
+                    let destinationEntity = relationship.destinationEntity else {
+                        
+                        return nil
+                }
+                return attributeDescription(
+                    for: components.dropFirst().joined(separator: "."),
+                    in: destinationEntity
+                )
+            }
+        }
+        
+        var propertiesToFetch = [Any]()
+        for term in self.selectTerms {
+            
+            switch term {
+                
+            case ._attribute(let keyPath):
+                propertiesToFetch.append(keyPath)
+                
+            case ._aggregate(let function, let keyPath, let alias, let nativeType):
+                let entityDescription = fetchRequest.entity!
+                if let attributeDescription = attributeDescription(for: keyPath, in: entityDescription) {
+                    
+                    let expressionDescription = NSExpressionDescription()
+                    expressionDescription.name = alias
+                    if nativeType == .undefinedAttributeType {
+                        
+                        expressionDescription.expressionResultType = attributeDescription.attributeType
+                    }
+                    else {
+                        
+                        expressionDescription.expressionResultType = nativeType
+                    }
+                    expressionDescription.expression = NSExpression(
+                        forFunction: function,
+                        arguments: [NSExpression(forKeyPath: keyPath)]
+                    )
+                    propertiesToFetch.append(expressionDescription)
+                }
+                else {
+                    
+                    CoreStore.log(
+                        .warning,
+                        message: "The key path \"\(keyPath)\" could not be resolved in entity \(cs_typeName(entityDescription.managedObjectClassName)) as an attribute and will be ignored by \(cs_typeName(self)) query clause."
+                    )
+                }
+                
+            case ._identity(let alias, let nativeType):
+                let expressionDescription = NSExpressionDescription()
+                expressionDescription.name = alias
+                if nativeType == .undefinedAttributeType {
+                    
+                    expressionDescription.expressionResultType = .objectIDAttributeType
+                }
+                else {
+                    
+                    expressionDescription.expressionResultType = nativeType
+                }
+                expressionDescription.expression = NSExpression.expressionForEvaluatedObject()
+                
+                propertiesToFetch.append(expressionDescription)
+            }
+        }
+        
+        fetchRequest.propertiesToFetch = propertiesToFetch
+    }
    
    
    // MARK: Private
@@ -388,7 +502,7 @@ public final class CSSelect: NSObject {

 // MARK: - Select

-extension Select: CoreStoreSwiftType {
+extension Select where D: NSManagedObject {
    
    // MARK: CoreStoreSwiftType
    
@@ -396,4 +510,12 @@ extension Select: CoreStoreSwiftType {
        
        return CSSelect(self)
    }
+    
+    
+    // MARK: FilePrivate
+    
+    fileprivate func downcast() -> Select<NSManagedObject, T> {
+        
+        return Select<NSManagedObject, T>(self.selectTerms.map({ $0.downcast() }))
+    }
 }
--- a/Sources/CSSetupResult.swift
+++ b/Sources/CSSetupResult.swift
@@ -152,7 +152,7 @@ public final class CSSetupResult: NSObject {
    
    // MARK: CoreStoreObjectiveCType
    
-    public required init<T: StorageInterface>(_ swiftValue: SetupResult<T>) where T: CoreStoreSwiftType, T.ObjectiveCType: CSStorageInterface {
+    public required init<T>(_ swiftValue: SetupResult<T>) where T: CoreStoreSwiftType, T.ObjectiveCType: CSStorageInterface {
        
        switch swiftValue {
            
--- a/Sources/CSSynchronousDataTransaction.swift
+++ b/Sources/CSSynchronousDataTransaction.swift
@@ -35,7 +35,7 @@ import CoreData
 - SeeAlso: `SynchronousDataTransaction`
 */
@objc
-public final class CSSynchronousDataTransaction: CSBaseDataTransaction {
+public final class CSSynchronousDataTransaction: CSBaseDataTransaction, CoreStoreObjectiveCType {
    
    /**
     Saves the transaction changes and waits for completion synchronously. This method should not be used after the `-commitAndWaitWithError:` method was already called once.
@@ -129,9 +129,9 @@ public final class CSSynchronousDataTransaction: CSBaseDataTransaction {
    
    public typealias SwiftType = SynchronousDataTransaction
    
-    public override var bridgeToSwift: SynchronousDataTransaction {
+    public var bridgeToSwift: SynchronousDataTransaction {
        
-        return super.bridgeToSwift as! SynchronousDataTransaction
+        return super.swiftTransaction as! SynchronousDataTransaction
    }
    
    public required init(_ swiftValue: SynchronousDataTransaction) {
@@ -139,9 +139,9 @@ public final class CSSynchronousDataTransaction: CSBaseDataTransaction {
        super.init(swiftValue as BaseDataTransaction)
    }
    
-    public required init(_ swiftValue: BaseDataTransaction) {
+    public required override init(_ swiftValue: BaseDataTransaction) {
        
-        super.init(swiftValue as! SynchronousDataTransaction)
+        super.init(swiftValue)
    }
    
    
--- a/Sources/CSUnsafeDataTransaction.swift
+++ b/Sources/CSUnsafeDataTransaction.swift
@@ -35,7 +35,7 @@ import CoreData
 - SeeAlso: `UnsafeDataTransaction`
 */
@objc
-public final class CSUnsafeDataTransaction: CSBaseDataTransaction {
+public final class CSUnsafeDataTransaction: CSBaseDataTransaction, CoreStoreObjectiveCType {
    /**
     Saves the transaction changes asynchronously. For a `CSUnsafeDataTransaction`, multiple commits are allowed, although it is the developer's responsibility to ensure a reasonable leeway to prevent blocking the main thread.
     
@@ -189,9 +189,9 @@ public final class CSUnsafeDataTransaction: CSBaseDataTransaction {
    
    public typealias SwiftType = UnsafeDataTransaction
    
-    public override var bridgeToSwift: UnsafeDataTransaction {
+    public var bridgeToSwift: UnsafeDataTransaction {
        
-        return super.bridgeToSwift as! UnsafeDataTransaction
+        return super.swiftTransaction as! UnsafeDataTransaction
    }
    
    public required init(_ swiftValue: UnsafeDataTransaction) {
@@ -199,9 +199,9 @@ public final class CSUnsafeDataTransaction: CSBaseDataTransaction {
        super.init(swiftValue as BaseDataTransaction)
    }
    
-    public required init(_ swiftValue: BaseDataTransaction) {
+    public required override init(_ swiftValue: BaseDataTransaction) {
        
-        super.init(swiftValue as! UnsafeDataTransaction)
+        super.init(swiftValue)
    }
    
    
--- a/Sources/CSWhere.swift
+++ b/Sources/CSWhere.swift
@@ -35,7 +35,7 @@ import CoreData
 - SeeAlso: `Where`
 */
@objc
-public final class CSWhere: NSObject, CSFetchClause, CSQueryClause, CSDeleteClause, CoreStoreObjectiveCType {
+public final class CSWhere: NSObject, CSFetchClause, CSQueryClause, CSDeleteClause {
    
    /**
     The internal `NSPredicate` instance for the `Where` clause
@@ -85,7 +85,7 @@ public final class CSWhere: NSObject, CSFetchClause, CSQueryClause, CSDeleteClau
     - parameter value: the arguments for the `==` operator
     */
    @objc
-    public convenience init(keyPath: KeyPath, isEqualTo value: CoreDataNativeType?) {
+    public convenience init(keyPath: KeyPathString, isEqualTo value: CoreDataNativeType?) {
        
        self.init(value == nil || value is NSNull
            ? Where("\(keyPath) == nil")
@@ -99,7 +99,7 @@ public final class CSWhere: NSObject, CSFetchClause, CSQueryClause, CSDeleteClau
     - parameter list: the array to check membership of
     */
    @objc
-    public convenience init(keyPath: KeyPath, isMemberOf list: [CoreDataNativeType]) {
+    public convenience init(keyPath: KeyPathString, isMemberOf list: [CoreDataNativeType]) {
        
        self.init(Where("\(keyPath) IN %@", list as NSArray))
    }
@@ -149,11 +149,11 @@ public final class CSWhere: NSObject, CSFetchClause, CSQueryClause, CSDeleteClau
    
    // MARK: CoreStoreObjectiveCType
    
-    public let bridgeToSwift: Where
+    public let bridgeToSwift: Where<NSManagedObject>
    
-    public init(_ swiftValue: Where) {
+    public init<D: NSManagedObject>(_ swiftValue: Where<D>) {
        
-        self.bridgeToSwift = swiftValue
+        self.bridgeToSwift = swiftValue.downcast()
        super.init()
    }
 }
@@ -161,7 +161,7 @@ public final class CSWhere: NSObject, CSFetchClause, CSQueryClause, CSDeleteClau

 // MARK: - Where

-extension Where: CoreStoreSwiftType {
+extension Where where D: NSManagedObject {
    
    // MARK: CoreStoreSwiftType
    
@@ -169,4 +169,12 @@ extension Where: CoreStoreSwiftType {
        
        return CSWhere(self)
    }
+    
+    
+    // MARK: FilePrivate
+    
+    fileprivate func downcast() -> Where<NSManagedObject> {
+        
+        return Where<NSManagedObject>(self.predicate)
+    }
 }
--- a/Sources/CoreDataNativeType.swift
+++ b/Sources/CoreDataNativeType.swift
@@ -33,7 +33,7 @@ import CoreData
 Objective-C Foundation types that are natively supported by Core Data managed attributes all conform to `CoreDataNativeType`.
 */
@objc
-public protocol CoreDataNativeType: class, NSObjectProtocol, AnyObject {}
+public protocol CoreDataNativeType: class, NSObjectProtocol {}


 // MARK: - NSNumber
--- a/Sources/CoreStore+CustomDebugStringConvertible.swift
+++ b/Sources/CoreStore+CustomDebugStringConvertible.swift
@@ -868,7 +868,8 @@ extension SQLiteStore: CustomDebugStringConvertible, CoreStoreDebugStringConvert
            ("storeOptions", self.storeOptions as Any),
            ("fileURL", self.fileURL),
            ("migrationMappingProviders", self.migrationMappingProviders),
-            ("localStorageOptions", self.localStorageOptions)
+            ("localStorageOptions", self.localStorageOptions),
+            ("fileSize", self.fileSize() as Any)
        )
    }
 }
@@ -1092,15 +1093,6 @@ fileprivate extension String {
        return String(repeating: " ", count: level * 4)
    }
    
-    fileprivate func trimSwiftModuleName() -> String {
-        
-        if self.hasPrefix("Swift.") {
-            
-            return self.substring(from: "Swift.".endIndex)
-        }
-        return self
-    }
-    
    fileprivate mutating func indent(_ level: Int) {
        
        self = self.replacingOccurrences(of: "\n", with: "\n\(String.indention(level))")
@@ -1214,6 +1206,8 @@ extension NSAttributeType: CoreStoreDebugStringConvertible {
        case .binaryDataAttributeType:      return ".binaryDataAttributeType"
        case .transformableAttributeType:   return ".transformableAttributeType"
        case .objectIDAttributeType:        return ".objectIDAttributeType"
+        case .UUIDAttributeType:            return ".UUIDAttributeType"
+        case .URIAttributeType:             return ".URIAttributeType"
        }
    }
 }
--- a/Sources/CoreStore+Migration.swift
+++ b/Sources/CoreStore+Migration.swift
@@ -47,7 +47,7 @@ public extension CoreStore {
     - parameter storage: the storage
     - parameter completion: the closure to be executed on the main queue when the process completes, either due to success or failure. The closure's `SetupResult` argument indicates the result. Note that the `StorageInterface` associated to the `SetupResult.success` may not always be the same instance as the parameter argument if a previous `StorageInterface` was already added at the same URL and with the same configuration.
     */
-    public static func addStorage<T: StorageInterface>(_ storage: T, completion: @escaping (SetupResult<T>) -> Void) {
+    public static func addStorage<T>(_ storage: T, completion: @escaping (SetupResult<T>) -> Void) {
        
        self.defaultStack.addStorage(storage, completion: completion)
    }
--- a/Sources/CoreStore+Observing.swift
+++ b/Sources/CoreStore+Observing.swift
@@ -38,7 +38,7 @@ public extension CoreStore {
     - parameter object: the `DynamicObject` to observe changes from
     - returns: a `ObjectMonitor` that monitors changes to `object`
     */
-    public static func monitorObject<T: DynamicObject>(_ object: T) -> ObjectMonitor<T> {
+    public static func monitorObject<D>(_ object: D) -> ObjectMonitor<D> {
        
        return self.defaultStack.monitorObject(object)
    }
@@ -50,7 +50,7 @@ public extension CoreStore {
     - parameter fetchClauses: a series of `FetchClause` instances for fetching the object list. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: a `ListMonitor` instance that monitors changes to the list
     */
-    public static func monitorList<T: DynamicObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> ListMonitor<T> {
+    public static func monitorList<D>(_ from: From<D>, _ fetchClauses: FetchClause...) -> ListMonitor<D> {
        
        return self.defaultStack.monitorList(from, fetchClauses)
    }
@@ -62,11 +62,28 @@ public extension CoreStore {
     - parameter fetchClauses: a series of `FetchClause` instances for fetching the object list. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: a `ListMonitor` instance that monitors changes to the list
     */
-    public static func monitorList<T: DynamicObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> ListMonitor<T> {
+    public static func monitorList<D>(_ from: From<D>, _ fetchClauses: [FetchClause]) -> ListMonitor<D> {
        
        return self.defaultStack.monitorList(from, fetchClauses)
    }
    
+    /**
+     Creates a `ListMonitor` for a list of `DynamicObject`s that satisfy the specified `FetchChainableBuilderType` built from a chain of clauses.
+     ```
+     let monitor = CoreStore.monitorList(
+         From<MyPersonEntity>()
+             .where(\.age > 18)
+             .orderBy(.ascending(\.age))
+     )
+     ```
+     - parameter clauseChain: a `FetchChainableBuilderType` built from a chain of clauses
+     - returns: a `ListMonitor` for a list of `DynamicObject`s that satisfy the specified `FetchChainableBuilderType`
+     */
+    public static func monitorList<B: FetchChainableBuilderType>(_ clauseChain: B) -> ListMonitor<B.ObjectType> {
+        
+        return self.defaultStack.monitorList(clauseChain.from, clauseChain.fetchClauses)
+    }
+    
    /**
     Using the `defaultStack`, asynchronously creates a `ListMonitor` for a list of `DynamicObject`s that satisfy the specified fetch clauses. Multiple `ListObserver`s may then register themselves to be notified when changes are made to the list. Since `NSFetchedResultsController` greedily locks the persistent store on initial fetch, you may prefer this method instead of the synchronous counterpart to avoid deadlocks while background updates/saves are being executed.
     
@@ -74,7 +91,7 @@ public extension CoreStore {
     - parameter from: a `From` clause indicating the entity type
     - parameter fetchClauses: a series of `FetchClause` instances for fetching the object list. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     */
-    public static func monitorList<T: DynamicObject>(createAsynchronously: @escaping (ListMonitor<T>) -> Void, _ from: From<T>, _ fetchClauses: FetchClause...) {
+    public static func monitorList<D>(createAsynchronously: @escaping (ListMonitor<D>) -> Void, _ from: From<D>, _ fetchClauses: FetchClause...) {
        
        self.defaultStack.monitorList(createAsynchronously: createAsynchronously, from, fetchClauses)
    }
@@ -86,11 +103,37 @@ public extension CoreStore {
     - parameter from: a `From` clause indicating the entity type
     - parameter fetchClauses: a series of `FetchClause` instances for fetching the object list. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     */
-    public static func monitorList<T: DynamicObject>(createAsynchronously: @escaping (ListMonitor<T>) -> Void, _ from: From<T>, _ fetchClauses: [FetchClause])  {
+    public static func monitorList<D>(createAsynchronously: @escaping (ListMonitor<D>) -> Void, _ from: From<D>, _ fetchClauses: [FetchClause])  {
        
        self.defaultStack.monitorList(createAsynchronously: createAsynchronously, from, fetchClauses)
    }
    
+    /**
+     Asynchronously creates a `ListMonitor` for a list of `DynamicObject`s that satisfy the specified `FetchChainableBuilderType` built from a chain of clauses. Since `NSFetchedResultsController` greedily locks the persistent store on initial fetch, you may prefer this method instead of the synchronous counterpart to avoid deadlocks while background updates/saves are being executed.
+     
+     ```
+     CoreStore.monitorList(
+         { (monitor) in
+             self.monitor = monitor
+         },
+         From<MyPersonEntity>()
+             .where(\.age > 18)
+             .orderBy(.ascending(\.age))
+     )
+     ```
+     - parameter createAsynchronously: the closure that receives the created `ListMonitor` instance
+     - parameter clauseChain: a `FetchChainableBuilderType` built from a chain of clauses
+     - returns: a `ListMonitor` for a list of `DynamicObject`s that satisfy the specified `FetchChainableBuilderType`
+     */
+    public static func monitorList<B: FetchChainableBuilderType>(createAsynchronously: @escaping (ListMonitor<B.ObjectType>) -> Void, _ clauseChain: B) {
+        
+        self.defaultStack.monitorList(
+            createAsynchronously: createAsynchronously,
+            clauseChain.from,
+            clauseChain.fetchClauses
+        )
+    }
+    
    /**
     Using the `defaultStack`, creates a `ListMonitor` for a sectioned list of `DynamicObject`s that satisfy the specified fetch clauses. Multiple `ListObserver`s may then register themselves to be notified when changes are made to the list.
     
@@ -99,7 +142,7 @@ public extension CoreStore {
     - parameter fetchClauses: a series of `FetchClause` instances for fetching the object list. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: a `ListMonitor` instance that monitors changes to the list
     */
-    public static func monitorSectionedList<T: DynamicObject>(_ from: From<T>, _ sectionBy: SectionBy, _ fetchClauses: FetchClause...) -> ListMonitor<T> {
+    public static func monitorSectionedList<D>(_ from: From<D>, _ sectionBy: SectionBy<D>, _ fetchClauses: FetchClause...) -> ListMonitor<D> {
        
        return self.defaultStack.monitorSectionedList(from, sectionBy, fetchClauses)
    }
@@ -112,11 +155,33 @@ public extension CoreStore {
     - parameter fetchClauses: a series of `FetchClause` instances for fetching the object list. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: a `ListMonitor` instance that monitors changes to the list
     */
-    public static func monitorSectionedList<T: DynamicObject>(_ from: From<T>, _ sectionBy: SectionBy, _ fetchClauses: [FetchClause]) -> ListMonitor<T> {
+    public static func monitorSectionedList<D>(_ from: From<D>, _ sectionBy: SectionBy<D>, _ fetchClauses: [FetchClause]) -> ListMonitor<D> {
        
        return self.defaultStack.monitorSectionedList(from, sectionBy, fetchClauses)
    }
    
+    /**
+     Creates a `ListMonitor` for a sectioned list of `DynamicObject`s that satisfy the specified `SectionMonitorBuilderType` built from a chain of clauses.
+     ```
+     let monitor = CoreStore.monitorSectionedList(
+         From<MyPersonEntity>()
+             .sectionBy(\.age, { "\($0!) years old" })
+             .where(\.age > 18)
+             .orderBy(.ascending(\.age))
+     )
+     ```
+     - parameter clauseChain: a `SectionMonitorBuilderType` built from a chain of clauses
+     - returns: a `ListMonitor` for a list of `DynamicObject`s that satisfy the specified `SectionMonitorBuilderType`
+     */
+    public static func monitorSectionedList<B: SectionMonitorBuilderType>(_ clauseChain: B) -> ListMonitor<B.ObjectType> {
+        
+        return self.defaultStack.monitorSectionedList(
+            clauseChain.from,
+            clauseChain.sectionBy,
+            clauseChain.fetchClauses
+        )
+    }
+    
    /**
     Using the `defaultStack`, asynchronously creates a `ListMonitor` for a sectioned list of `DynamicObject`s that satisfy the specified fetch clauses. Multiple `ListObserver`s may then register themselves to be notified when changes are made to the list. Since `NSFetchedResultsController` greedily locks the persistent store on initial fetch, you may prefer this method instead of the synchronous counterpart to avoid deadlocks while background updates/saves are being executed.
     
@@ -125,7 +190,7 @@ public extension CoreStore {
     - parameter sectionBy: a `SectionBy` clause indicating the keyPath for the attribute to use when sorting the list into sections.
     - parameter fetchClauses: a series of `FetchClause` instances for fetching the object list. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     */
-    public static func monitorSectionedList<T: DynamicObject>(createAsynchronously: @escaping (ListMonitor<T>) -> Void, _ from: From<T>, _ sectionBy: SectionBy, _ fetchClauses: FetchClause...) {
+    public static func monitorSectionedList<D>(createAsynchronously: @escaping (ListMonitor<D>) -> Void, _ from: From<D>, _ sectionBy: SectionBy<D>, _ fetchClauses: FetchClause...) {
        
        self.defaultStack.monitorSectionedList(createAsynchronously: createAsynchronously, from, sectionBy, fetchClauses)
    }
@@ -138,8 +203,34 @@ public extension CoreStore {
     - parameter sectionBy: a `SectionBy` clause indicating the keyPath for the attribute to use when sorting the list into sections.
     - parameter fetchClauses: a series of `FetchClause` instances for fetching the object list. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     */
-    public static func monitorSectionedList<T: DynamicObject>(createAsynchronously: @escaping (ListMonitor<T>) -> Void, _ from: From<T>, _ sectionBy: SectionBy, _ fetchClauses: [FetchClause]) {
+    public static func monitorSectionedList<D>(createAsynchronously: @escaping (ListMonitor<D>) -> Void, _ from: From<D>, _ sectionBy: SectionBy<D>, _ fetchClauses: [FetchClause]) {
        
        self.defaultStack.monitorSectionedList(createAsynchronously: createAsynchronously, from, sectionBy, fetchClauses)
    }
+    
+    /**
+     Asynchronously creates a `ListMonitor` for a sectioned list of `DynamicObject`s that satisfy the specified `SectionMonitorBuilderType` built from a chain of clauses.
+     ```
+     CoreStore.monitorSectionedList(
+         { (monitor) in
+             self.monitor = monitor
+         },
+         From<MyPersonEntity>()
+             .sectionBy(\.age, { "\($0!) years old" })
+             .where(\.age > 18)
+             .orderBy(.ascending(\.age))
+     )
+     ```
+     - parameter clauseChain: a `SectionMonitorBuilderType` built from a chain of clauses
+     - returns: a `ListMonitor` for a list of `DynamicObject`s that satisfy the specified `SectionMonitorBuilderType`
+     */
+    public static func monitorSectionedList<B: SectionMonitorBuilderType>(createAsynchronously: @escaping (ListMonitor<B.ObjectType>) -> Void, _ clauseChain: B) {
+        
+        self.defaultStack.monitorSectionedList(
+            createAsynchronously: createAsynchronously,
+            clauseChain.from,
+            clauseChain.sectionBy,
+            clauseChain.fetchClauses
+        )
+    }
 }
--- a/Sources/CoreStore+Querying.swift
+++ b/Sources/CoreStore+Querying.swift
@@ -37,7 +37,7 @@ public extension CoreStore {
     - parameter object: a reference to the object created/fetched outside the `DataStack`
     - returns: the `DynamicObject` instance if the object exists in the `DataStack`, or `nil` if not found.
     */
-    public static func fetchExisting<T: DynamicObject>(_ object: T) -> T? {
+    public static func fetchExisting<D: DynamicObject>(_ object: D) -> D? {
        
        return self.defaultStack.fetchExisting(object)
    }
@@ -48,7 +48,7 @@ public extension CoreStore {
     - parameter objectID: the `NSManagedObjectID` for the object
     - returns: the `DynamicObject` instance if the object exists in the `DataStack`, or `nil` if not found.
     */
-    public static func fetchExisting<T: DynamicObject>(_ objectID: NSManagedObjectID) -> T? {
+    public static func fetchExisting<D: DynamicObject>(_ objectID: NSManagedObjectID) -> D? {
        
        return self.defaultStack.fetchExisting(objectID)
    }
@@ -59,7 +59,7 @@ public extension CoreStore {
     - parameter objects: an array of `DynamicObject`s created/fetched outside the `DataStack`
     - returns: the `DynamicObject` array for objects that exists in the `DataStack`
     */
-    public static func fetchExisting<T: DynamicObject, S: Sequence>(_ objects: S) -> [T] where S.Iterator.Element == T {
+    public static func fetchExisting<D: DynamicObject, S: Sequence>(_ objects: S) -> [D] where S.Iterator.Element == D {
        
        return self.defaultStack.fetchExisting(objects)
    }
@@ -70,7 +70,7 @@ public extension CoreStore {
     - parameter objectIDs: the `NSManagedObjectID` array for the objects
     - returns: the `DynamicObject` array for objects that exists in the `DataStack`
     */
-    public static func fetchExisting<T: DynamicObject, S: Sequence>(_ objectIDs: S) -> [T] where S.Iterator.Element == NSManagedObjectID {
+    public static func fetchExisting<D: DynamicObject, S: Sequence>(_ objectIDs: S) -> [D] where S.Iterator.Element == NSManagedObjectID {
        
        return self.defaultStack.fetchExisting(objectIDs)
    }
@@ -82,7 +82,7 @@ public extension CoreStore {
     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: the first `DynamicObject` instance that satisfies the specified `FetchClause`s
     */
-    public static func fetchOne<T: DynamicObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> T? {
+    public static func fetchOne<D>(_ from: From<D>, _ fetchClauses: FetchClause...) -> D? {
        
        return self.defaultStack.fetchOne(from, fetchClauses)
    }
@@ -94,11 +94,28 @@ public extension CoreStore {
     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: the first `DynamicObject` instance that satisfies the specified `FetchClause`s
     */
-    public static func fetchOne<T: DynamicObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> T? {
+    public static func fetchOne<D>(_ from: From<D>, _ fetchClauses: [FetchClause]) -> D? {
        
        return self.defaultStack.fetchOne(from, fetchClauses)
    }
    
+    /**
+     Fetches the first `DynamicObject` instance that satisfies the specified `FetchChainableBuilderType` built from a chain of clauses.
+     ```
+     let youngestTeen = CoreStore.fetchOne(
+         From<MyPersonEntity>()
+             .where(\.age > 18)
+             .orderBy(.ascending(\.age))
+     )
+     ```
+     - parameter clauseChain: a `FetchChainableBuilderType` built from a chain of clauses
+     - returns: the first `DynamicObject` instance that satisfies the specified `FetchChainableBuilderType`
+     */
+    public static func fetchOne<B: FetchChainableBuilderType>(_ clauseChain: B) -> B.ObjectType? {
+        
+        return self.defaultStack.fetchOne(clauseChain)
+    }
+    
    /**
     Using the `defaultStack`, fetches all `DynamicObject` instances that satisfy the specified `FetchClause`s. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     
@@ -106,7 +123,7 @@ public extension CoreStore {
     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: all `DynamicObject` instances that satisfy the specified `FetchClause`s
     */
-    public static func fetchAll<T: DynamicObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> [T]? {
+    public static func fetchAll<D>(_ from: From<D>, _ fetchClauses: FetchClause...) -> [D]? {
        
        return self.defaultStack.fetchAll(from, fetchClauses)
    }
@@ -118,11 +135,28 @@ public extension CoreStore {
     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: all `DynamicObject` instances that satisfy the specified `FetchClause`s
     */
-    public static func fetchAll<T: DynamicObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> [T]? {
+    public static func fetchAll<D>(_ from: From<D>, _ fetchClauses: [FetchClause]) -> [D]? {
        
        return self.defaultStack.fetchAll(from, fetchClauses)
    }
    
+    /**
+     Fetches all `DynamicObject` instances that satisfy the specified `FetchChainableBuilderType` built from a chain of clauses.
+     ```
+     let people = CoreStore.fetchAll(
+         From<MyPersonEntity>()
+             .where(\.age > 18)
+             .orderBy(.ascending(\.age))
+     )
+     ```
+     - parameter clauseChain: a `FetchChainableBuilderType` built from a chain of clauses
+     - returns: all `DynamicObject` instances that satisfy the specified `FetchChainableBuilderType`
+     */
+    public static func fetchAll<B: FetchChainableBuilderType>(_ clauseChain: B) -> [B.ObjectType]? {
+        
+        return self.defaultStack.fetchAll(clauseChain)
+    }
+    
    /**
     Using the `defaultStack`, fetches the number of `DynamicObject`s that satisfy the specified `FetchClause`s. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     
@@ -130,7 +164,7 @@ public extension CoreStore {
     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: the number `DynamicObject`s that satisfy the specified `FetchClause`s
     */
-    public static func fetchCount<T: DynamicObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> Int? {
+    public static func fetchCount<D>(_ from: From<D>, _ fetchClauses: FetchClause...) -> Int? {
        
        return self.defaultStack.fetchCount(from, fetchClauses)
    }
@@ -142,11 +176,28 @@ public extension CoreStore {
     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: the number `DynamicObject`s that satisfy the specified `FetchClause`s
     */
-    public static func fetchCount<T: DynamicObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> Int? {
+    public static func fetchCount<D>(_ from: From<D>, _ fetchClauses: [FetchClause]) -> Int? {
        
        return self.defaultStack.fetchCount(from, fetchClauses)
    }
    
+    /**
+     Fetches the number of `DynamicObject`s that satisfy the specified `FetchChainableBuilderType` built from a chain of clauses.
+     ```
+     let numberOfAdults = CoreStore.fetchCount(
+         From<MyPersonEntity>()
+             .where(\.age > 18)
+             .orderBy(.ascending(\.age))
+     )
+     ```
+     - parameter clauseChain: a `FetchChainableBuilderType` built from a chain of clauses
+     - returns: the number `DynamicObject`s that satisfy the specified `FetchChainableBuilderType`
+     */
+    public static func fetchCount<B: FetchChainableBuilderType>(_ clauseChain: B) -> Int? {
+        
+        return self.defaultStack.fetchCount(clauseChain)
+    }
+    
    /**
     Using the `defaultStack`, fetches the `NSManagedObjectID` for the first `DynamicObject` that satisfies the specified `FetchClause`s. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     
@@ -154,7 +205,7 @@ public extension CoreStore {
     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: the `NSManagedObjectID` for the first `DynamicObject` that satisfies the specified `FetchClause`s
     */
-    public static func fetchObjectID<T: DynamicObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> NSManagedObjectID? {
+    public static func fetchObjectID<D>(_ from: From<D>, _ fetchClauses: FetchClause...) -> NSManagedObjectID? {
        
        return self.defaultStack.fetchObjectID(from, fetchClauses)
    }
@@ -166,11 +217,28 @@ public extension CoreStore {
     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: the `NSManagedObjectID` for the first `DynamicObject` that satisfies the specified `FetchClause`s
     */
-    public static func fetchObjectID<T: DynamicObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> NSManagedObjectID? {
+    public static func fetchObjectID<D>(_ from: From<D>, _ fetchClauses: [FetchClause]) -> NSManagedObjectID? {
        
        return self.defaultStack.fetchObjectID(from, fetchClauses)
    }
    
+    /**
+     Fetches the `NSManagedObjectID` for the first `DynamicObject` that satisfies the specified `FetchChainableBuilderType` built from a chain of clauses.
+     ```
+     let youngestTeenID = CoreStore.fetchObjectID(
+         From<MyPersonEntity>()
+             .where(\.age > 18)
+             .orderBy(.ascending(\.age))
+     )
+     ```
+     - parameter clauseChain: a `FetchChainableBuilderType` built from a chain of clauses
+     - returns: the `NSManagedObjectID` for the first `DynamicObject` that satisfies the specified `FetchChainableBuilderType`
+     */
+    public static func fetchObjectID<B: FetchChainableBuilderType>(_ clauseChain: B) -> NSManagedObjectID? {
+        
+        return self.defaultStack.fetchObjectID(clauseChain)
+    }
+    
    /**
     Using the `defaultStack`, fetches the `NSManagedObjectID` for all `DynamicObject`s that satisfy the specified `FetchClause`s. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     
@@ -178,7 +246,7 @@ public extension CoreStore {
     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: the `NSManagedObjectID` for all `DynamicObject`s that satisfy the specified `FetchClause`s
     */
-    public static func fetchObjectIDs<T: DynamicObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> [NSManagedObjectID]? {
+    public static func fetchObjectIDs<D>(_ from: From<D>, _ fetchClauses: FetchClause...) -> [NSManagedObjectID]? {
        
        return self.defaultStack.fetchObjectIDs(from, fetchClauses)
    }
@@ -190,11 +258,28 @@ public extension CoreStore {
     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: the `NSManagedObjectID` for all `DynamicObject`s that satisfy the specified `FetchClause`s
     */
-    public static func fetchObjectIDs<T: DynamicObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> [NSManagedObjectID]? {
+    public static func fetchObjectIDs<D>(_ from: From<D>, _ fetchClauses: [FetchClause]) -> [NSManagedObjectID]? {
        
        return self.defaultStack.fetchObjectIDs(from, fetchClauses)
    }
    
+    /**
+     Fetches the `NSManagedObjectID` for all `DynamicObject`s that satisfy the specified `FetchChainableBuilderType` built from a chain of clauses.
+     ```
+     let idsOfAdults = transaction.fetchObjectIDs(
+         From<MyPersonEntity>()
+             .where(\.age > 18)
+             .orderBy(.ascending(\.age))
+     )
+     ```
+     - parameter clauseChain: a `FetchChainableBuilderType` built from a chain of clauses
+     - returns: the `NSManagedObjectID` for all `DynamicObject`s that satisfy the specified `FetchChainableBuilderType`
+     */
+    public static func fetchObjectIDs<B: FetchChainableBuilderType>(_ clauseChain: B) -> [NSManagedObjectID]? {
+        
+        return self.defaultStack.fetchObjectIDs(clauseChain)
+    }
+    
    /**
     Using the `defaultStack`, queries aggregate values as specified by the `QueryClause`s. Requires at least a `Select` clause, and optional `Where`, `OrderBy`, `GroupBy`, and `Tweak` clauses.
     
@@ -205,7 +290,7 @@ public extension CoreStore {
     - parameter queryClauses: a series of `QueryClause` instances for the query request. Accepts `Where`, `OrderBy`, `GroupBy`, and `Tweak` clauses.
     - returns: the result of the the query. The type of the return value is specified by the generic type of the `Select<U>` parameter.
     */
-    public static func queryValue<T: DynamicObject, U: QueryableAttributeType>(_ from: From<T>, _ selectClause: Select<U>, _ queryClauses: QueryClause...) -> U? {
+    public static func queryValue<D, U: QueryableAttributeType>(_ from: From<D>, _ selectClause: Select<D, U>, _ queryClauses: QueryClause...) -> U? {
        
        return self.defaultStack.queryValue(from, selectClause, queryClauses)
    }
@@ -220,11 +305,30 @@ public extension CoreStore {
     - parameter queryClauses: a series of `QueryClause` instances for the query request. Accepts `Where`, `OrderBy`, `GroupBy`, and `Tweak` clauses.
     - returns: the result of the the query. The type of the return value is specified by the generic type of the `Select<U>` parameter.
     */
-    public static func queryValue<T: DynamicObject, U: QueryableAttributeType>(_ from: From<T>, _ selectClause: Select<U>, _ queryClauses: [QueryClause]) -> U? {
+    public static func queryValue<D, U: QueryableAttributeType>(_ from: From<D>, _ selectClause: Select<D, U>, _ queryClauses: [QueryClause]) -> U? {
        
        return self.defaultStack.queryValue(from, selectClause, queryClauses)
    }
    
+    /**
+     Queries a property value or aggregate as specified by the `QueryChainableBuilderType` built from a chain of clauses.
+     
+     A "query" differs from a "fetch" in that it only retrieves values already stored in the persistent store. As such, values from unsaved transactions or contexts will not be incorporated in the query result.
+     ```
+     let averageAdultAge = CoreStore.queryValue(
+         From<MyPersonEntity>()
+             .select(Int.self, .average(\.age))
+             .where(\.age > 18)
+     )
+     ```
+     - parameter clauseChain: a `QueryChainableBuilderType` indicating the property/aggregate to fetch and the series of queries for the request.
+     - returns: the result of the the query as specified by the `QueryChainableBuilderType`
+     */
+    public static func queryValue<B: QueryChainableBuilderType>(_ clauseChain: B) -> B.ResultType? where B.ResultType: QueryableAttributeType {
+        
+        return self.defaultStack.queryValue(clauseChain)
+    }
+    
    /**
     Using the `defaultStack`, queries a dictionary of attribtue values as specified by the `QueryClause`s. Requires at least a `Select` clause, and optional `Where`, `OrderBy`, `GroupBy`, and `Tweak` clauses.
     
@@ -235,7 +339,7 @@ public extension CoreStore {
     - parameter queryClauses: a series of `QueryClause` instances for the query request. Accepts `Where`, `OrderBy`, `GroupBy`, and `Tweak` clauses.
     - returns: the result of the the query. The type of the return value is specified by the generic type of the `Select<U>` parameter.
     */
-    public static func queryAttributes<T: DynamicObject>(_ from: From<T>, _ selectClause: Select<NSDictionary>, _ queryClauses: QueryClause...) -> [[String: Any]]? {
+    public static func queryAttributes<D>(_ from: From<D>, _ selectClause: Select<D, NSDictionary>, _ queryClauses: QueryClause...) -> [[String: Any]]? {
        
        return self.defaultStack.queryAttributes(from, selectClause, queryClauses)
    }
@@ -250,8 +354,36 @@ public extension CoreStore {
     - parameter queryClauses: a series of `QueryClause` instances for the query request. Accepts `Where`, `OrderBy`, `GroupBy`, and `Tweak` clauses.
     - returns: the result of the the query. The type of the return value is specified by the generic type of the `Select<U>` parameter.
     */
-    public static func queryAttributes<T: DynamicObject>(_ from: From<T>, _ selectClause: Select<NSDictionary>, _ queryClauses: [QueryClause]) -> [[String: Any]]? {
+    public static func queryAttributes<D>(_ from: From<D>, _ selectClause: Select<D, NSDictionary>, _ queryClauses: [QueryClause]) -> [[String: Any]]? {
        
        return self.defaultStack.queryAttributes(from, selectClause, queryClauses)
    }
+    
+    /**
+     Queries a dictionary of attribute values or  as specified by the `QueryChainableBuilderType` built from a chain of clauses.
+     
+     A "query" differs from a "fetch" in that it only retrieves values already stored in the persistent store. As such, values from unsaved transactions or contexts will not be incorporated in the query result.
+     ```
+     let results = CoreStore.queryAttributes(
+         From<MyPersonEntity>()
+             .select(
+                 NSDictionary.self,
+                 .attribute(\.age, as: "age"),
+                 .count(\.age, as: "numberOfPeople")
+             )
+             .groupBy(\.age)
+     )
+     for dictionary in results! {
+         let age = dictionary["age"] as! Int
+         let count = dictionary["numberOfPeople"] as! Int
+         print("There are \(count) people who are \(age) years old."
+     }
+     ```
+     - parameter clauseChain: a `QueryChainableBuilderType` indicating the properties to fetch and the series of queries for the request.
+     - returns: the result of the the query as specified by the `QueryChainableBuilderType`
+     */
+    public static func queryAttributes<B: QueryChainableBuilderType>(_ clauseChain: B) -> [[String: Any]]? where B.ResultType == NSDictionary {
+        
+        return self.defaultStack.queryAttributes(clauseChain)
+    }
 }
--- a/Sources/CoreStore+Transaction.swift
+++ b/Sources/CoreStore+Transaction.swift
@@ -54,7 +54,7 @@ public extension CoreStore {
    }
    
    /**
-     Using the `defaultStack`, performs a transaction synchronously where `NSManagedObject` or `CoreStoreObject` creates, updates, and deletes can be made. The changes are commited automatically after the `task` closure returns. On success, the value returned from closure will be the return value of `perform(synchronous:)`. Any errors thrown from inside the `task` will be rethrown from `perform(synchronous:)`. To cancel/rollback changes, call `try transaction.cancel()`, which throws a `CoreStoreError.userCancelled`.
+     Using the `defaultStack`, performs a transaction synchronously where `NSManagedObject` or `CoreStoreObject` creates, updates, and deletes can be made. The changes are commited automatically after the `task` closure returns. On success, the value returned from closure will be the return value of `perform(synchronous:)`. Any errors thrown from inside the `task` will be thrown from `perform(synchronous:)`. To cancel/rollback changes, call `try transaction.cancel()`, which throws a `CoreStoreError.userCancelled`.
     
     - parameter task: the synchronous non-escaping closure where creates, updates, and deletes can be made to the transaction. Transaction blocks are executed serially in a background queue, and all changes are made from a concurrent `NSManagedObjectContext`.
     - parameter waitForAllObservers: When `true`, 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. When `false`, 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. Defaults to `true`.
--- a/Sources/CoreStoreBridge.h
+++ b/Sources/CoreStoreBridge.h
@@ -43,7 +43,7 @@
 #define CORESTORE_RETURNS_RETAINED          __attribute__((ns_returns_retained))


-#pragma mark - KeyPath Utilities
+#pragma mark - KeyPathString Utilities

 #define CSKeyPath(type, property) ({ \
    type *_je_keypath_dummy __attribute__((unused)); \
@@ -477,7 +477,7 @@ CSSelect *_Nonnull CSSelectData(CSSelectTerm *_Nonnull selectTerm) CORESTORE_RET
 a <tt>CSSelect</tt> clause for querying an <tt>NSManagedObjectID</tt> value
 */
 CORESTORE_EXTERN
-CSSelect *_Nonnull CSSelectObjectID() CORESTORE_RETURNS_RETAINED;
+CSSelect *_Nonnull CSSelectObjectID(void) CORESTORE_RETURNS_RETAINED;


 #pragma mark CSTweak
--- a/Sources/CoreStoreBridge.m
+++ b/Sources/CoreStoreBridge.m
@@ -235,15 +235,15 @@ CSWhere *_Nonnull CSWherePredicate(NSPredicate *_Nonnull predicate) CORESTORE_RE

 - (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) {
+    if (NSFoundationVersionNumber < NSFoundationVersionNumber10_0
+        || [[NSProcessInfo processInfo] isOperatingSystemAtLeastVersion:(NSOperatingSystemVersion){ 11, 0, 0 }]) {
        
        self.safeAffectedStores = affectedStores;
        [super setAffectedStores:affectedStores];
        return;
    }
+    // Bugfix for NSFetchRequest messing up memory management for `affectedStores`
+    // http://stackoverflow.com/questions/14396375/nsfetchedresultscontroller-crashes-in-ios-6-if-affectedstores-is-specified
    if (self.releaseArray != NULL) {
        
        CFRelease(self.releaseArray);
--- a/Sources/CoreStoreBridge.swift
+++ b/Sources/CoreStoreBridge.swift
@@ -31,7 +31,7 @@ import Foundation
 /**
 `CoreStoreObjectiveCType`s are Objective-C accessible classes that represent CoreStore's Swift types.
 */
-public protocol CoreStoreObjectiveCType: class, AnyObject {
+public protocol CoreStoreObjectiveCType: class {
    
    /**
     The corresponding Swift type
--- a/Sources/CoreStoreFetchRequest+CoreStore.swift
+++ b/Sources/CoreStoreFetchRequest+CoreStore.swift
@@ -34,7 +34,7 @@ internal extension CoreStoreFetchRequest {
    // MARK: Internal
    
    @nonobjc @inline(__always)
-    internal func dynamicCast<U: NSFetchRequestResult>() -> NSFetchRequest<U> {
+    internal func dynamicCast<U>() -> NSFetchRequest<U> {
        
        return unsafeBitCast(self, to: NSFetchRequest<U>.self)
    }
--- a/Sources/CoreStoreFetchedResultsController.swift
+++ b/Sources/CoreStoreFetchedResultsController.swift
@@ -35,7 +35,7 @@ internal final class CoreStoreFetchedResultsController: NSFetchedResultsControll
    // MARK: Internal
    
    @nonobjc
-    internal convenience init<T: DynamicObject>(dataStack: DataStack, fetchRequest: NSFetchRequest<NSManagedObject>, from: From<T>?, sectionBy: SectionBy? = nil, applyFetchClauses: @escaping (_ fetchRequest: NSFetchRequest<NSManagedObject>) -> Void) {
+    internal convenience init<D>(dataStack: DataStack, fetchRequest: NSFetchRequest<NSManagedObject>, from: From<D>, sectionBy: SectionBy<D>? = nil, applyFetchClauses: @escaping (_ fetchRequest: NSFetchRequest<NSManagedObject>) -> Void) {
        
        self.init(
            context: dataStack.mainContext,
@@ -47,33 +47,18 @@ internal final class CoreStoreFetchedResultsController: NSFetchedResultsControll
    }
    
    @nonobjc
-    internal init<T: DynamicObject>(context: NSManagedObjectContext, fetchRequest: NSFetchRequest<NSManagedObject>, from: From<T>?, sectionBy: SectionBy? = nil, applyFetchClauses: @escaping (_ fetchRequest: NSFetchRequest<NSManagedObject>) -> Void) {
+    internal init<D>(context: NSManagedObjectContext, fetchRequest: NSFetchRequest<NSManagedObject>, from: From<D>, sectionBy: SectionBy<D>? = nil, applyFetchClauses: @escaping (_ fetchRequest: NSFetchRequest<NSManagedObject>) -> Void) {
        
-        _ = from?.applyToFetchRequest(
+        _ = from.applyToFetchRequest(
            fetchRequest,
            context: context,
            applyAffectedStores: false
        )
        applyFetchClauses(fetchRequest)
        
-        if let from = from {
+        self.reapplyAffectedStores = { fetchRequest, context in
            
-            self.reapplyAffectedStores = { fetchRequest, context in
-                
-                return from.applyAffectedStoresForFetchedRequest(fetchRequest, context: context)
-            }
-        }
-        else {
-            
-            guard let from = (fetchRequest.entity.flatMap { $0.managedObjectClassName }).flatMap(NSClassFromString).flatMap({ From<T>($0 as! T.Type) }) else {
-                
-                CoreStore.abort("Attempted to create a \(CoreStoreFetchedResultsController.self) without a \(cs_typeName(From<T>.self)) clause or an \(cs_typeName(NSEntityDescription.self)).")
-            }
-            
-            self.reapplyAffectedStores = { fetchRequest, context in
-                
-                return from.applyAffectedStoresForFetchedRequest(fetchRequest, context: context)
-            }
+            return from.applyAffectedStoresForFetchedRequest(fetchRequest, context: context)
        }
        
        super.init(
@@ -98,7 +83,7 @@ internal final class CoreStoreFetchedResultsController: NSFetchedResultsControll
    }
    
    @nonobjc
-    internal func dynamicCast<U: NSFetchRequestResult>() -> NSFetchedResultsController<U> {
+    internal func dynamicCast<U>() -> NSFetchedResultsController<U> {
        
        return unsafeBitCast(self, to: NSFetchedResultsController<U>.self)
    }
--- a/Sources/CoreStoreLogger.swift
+++ b/Sources/CoreStoreLogger.swift
@@ -47,12 +47,6 @@ public enum LogLevel {
 */
 public protocol CoreStoreLogger {
    
-    /**
-     When `true`, all `NSManagedObject` attribute and relationship access will raise an assertion when executed on the wrong transaction/datastack queue. Defaults to `false` if not implemented.
-     */
-    // TODO: test before release (rolled back)
-//    var enableObjectConcurrencyDebugging: Bool { get set }
-    
    /**
     Handles log messages sent by the `CoreStore` framework.
     
@@ -100,13 +94,6 @@ public protocol CoreStoreLogger {

 extension CoreStoreLogger {
    
-    // TODO: test before release (rolled back)
-//    public var enableObjectConcurrencyDebugging: Bool {
-//        
-//        get { return false }
-//        set {}
-//    }
-    
    public func abort(_ message: String, fileName: StaticString, lineNumber: Int, functionName: StaticString) {
        
        Swift.fatalError(message, file: fileName, line: UInt(lineNumber))
--- a/Sources/CoreStoreManagedObject.swift
+++ b/Sources/CoreStoreManagedObject.swift
@@ -0,0 +1,51 @@
+//
+//  CoreStoreManagedObject.swift
+//  CoreStore
+//
+//  Copyright © 2017 John Rommel Estropia
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all
+//  copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+//  SOFTWARE.
+//
+
+import CoreData
+
+
+// MARK: - CoreStoreManagedObject
+
+@objc internal class CoreStoreManagedObject: NSManagedObject {
+    
+    internal typealias CustomGetter = @convention(block) (_ rawObject: Any) -> Any?
+    internal typealias CustomSetter = @convention(block) (_ rawObject: Any, _ newValue: Any?) -> Void
+    internal typealias CustomGetterSetter = (getter: CustomGetter?, setter: CustomSetter?)
+    
+    @nonobjc @inline(__always)
+    internal static func cs_subclassName(for entity: DynamicEntity, in modelVersion: ModelVersion) -> String {
+        
+        return "_\(NSStringFromClass(CoreStoreManagedObject.self))__\(modelVersion)__\(NSStringFromClass(entity.type))__\(entity.entityName)"
+    }
+}
+
+
+// MARK: - Private
+
+private enum Static {
+    
+    static let queue = DispatchQueue.concurrent("com.coreStore.coreStoreManagerObjectBarrierQueue")
+    static var cache: [ObjectIdentifier: [KeyPathString: Set<KeyPathString>]] = [:]
+}
--- a/Sources/CoreStoreObject+Querying.swift
+++ b/Sources/CoreStoreObject+Querying.swift
@@ -27,142 +27,86 @@ import CoreData
 import Foundation


-// MARK: - DynamicObject
-
-public extension DynamicObject where Self: CoreStoreObject {
-    
-    /**
-     Extracts the keyPath string from a `CoreStoreObject.Value` property.
-     ```
-     let keyPath: String = Person.keyPath { $0.nickname }
-     ```
-     */
-    public static func keyPath<O: CoreStoreObject, V: ImportableAttributeType>(_ attribute: (Self) -> ValueContainer<O>.Required<V>) -> String  {
-        
-        return attribute(self.meta).keyPath
-    }
-    
-    /**
-     Extracts the keyPath string from a `CoreStoreObject.Value` property.
-     ```
-     let keyPath: String = Person.keyPath { $0.nickname }
-     ```
-     */
-    public static func keyPath<O: CoreStoreObject, V: ImportableAttributeType>(_ attribute: (Self) -> ValueContainer<O>.Optional<V>) -> String  {
-        
-        return attribute(self.meta).keyPath
-    }
-    
-    /**
-     Creates a `Where` clause from a `CoreStoreObject.Value` property.
-     ```
-     let person = CoreStore.fetchOne(From<Person>(), Person.where { $0.nickname == "John" })
-     ```
-     */
-    public static func `where`(_ condition: (Self) -> Where) -> Where  {
-        
-        return condition(self.meta)
-    }
-    
-    /**
-     Creates an `OrderBy` clause from a `CoreStoreObject.Value` property.
-     ```
-     let person = CoreStore.fetchAll(From<Person>(), Person.ascending { $0.age })
-     ```
-     */
-    public static func ascending<O: CoreStoreObject, V: ImportableAttributeType>(_ attribute: (Self) -> ValueContainer<O>.Optional<V>) -> OrderBy  {
-        
-        return OrderBy(.ascending(attribute(self.meta).keyPath))
-    }
-    
-    /**
-     Creates an `OrderBy` clause from a `CoreStoreObject.Value` property.
-     ```
-     let person = CoreStore.fetchAll(From<Person>(), Person.descending { $0.age })
-     ```
-     */
-    public static func descending<O: CoreStoreObject, V: ImportableAttributeType>(_ attribute: (Self) -> ValueContainer<O>.Optional<V>) -> OrderBy  {
-        
-        return OrderBy(.descending(attribute(self.meta).keyPath))
-    }
-}
-
-
 // MARK: - ValueContainer.Required

 public extension ValueContainer.Required {
    
    /**
-     Creates a `Where` clause from a `CoreStoreObject.Value` property.
+     Creates a `Where` clause by comparing if a property is equal to a value
     ```
-     let person = CoreStore.fetchOne(From<Person>(), Person.where { $0.nickname == "John" })
+     let person = CoreStore.fetchOne(From<Person>().where({ $0.nickname == "John" }))
     ```
     */
-    @inline(__always)
-    public static func == (_ attribute: ValueContainer<O>.Required<V>, _ value: V) -> Where {
+    public static func == (_ attribute: ValueContainer<O>.Required<V>, _ value: V) -> Where<O> {
        
        return Where(attribute.keyPath, isEqualTo: value)
    }
    
    /**
-     Creates a `Where` clause from a `CoreStoreObject.Value` property.
+     Creates a `Where` clause by comparing if a property is not equal to a value
     ```
-     let person = CoreStore.fetchOne(From<Person>(), Person.where { $0.nickname != "John" })
+     let person = CoreStore.fetchOne(From<Person>().where({ $0.nickname != "John" }))
     ```
     */
-    @inline(__always)
-    public static func != (_ attribute: ValueContainer<O>.Required<V>, _ value: V) -> Where {
+    public static func != (_ attribute: ValueContainer<O>.Required<V>, _ value: V) -> Where<O> {
        
        return !Where(attribute.keyPath, isEqualTo: value)
    }
    
    /**
-     Creates a `Where` clause from a `CoreStoreObject.Value` property.
+     Creates a `Where` clause by comparing if a property is less than a value
     ```
-     let person = CoreStore.fetchOne(From<Person>(), Person.where { $0.age < 20 })
+     let person = CoreStore.fetchOne(From<Person>().where({ $0.age < 20 }))
     ```
     */
-    @inline(__always)
-    public static func < (_ attribute: ValueContainer<O>.Required<V>, _ value: V) -> Where {
+    public static func < (_ attribute: ValueContainer<O>.Required<V>, _ value: V) -> Where<O> {
        
        return Where("%K < %@", attribute.keyPath, value)
    }
    
    /**
-     Creates a `Where` clause from a `CoreStoreObject.Value` property.
+     Creates a `Where` clause by comparing if a property is greater than a value
     ```
-     let person = CoreStore.fetchOne(From<Person>(), Person.where { $0.age > 20 })
+     let person = CoreStore.fetchOne(From<Person>().where({ $0.age > 20 }))
     ```
     */
-    @inline(__always)
-    public static func > (_ attribute: ValueContainer<O>.Required<V>, _ value: V) -> Where {
+    public static func > (_ attribute: ValueContainer<O>.Required<V>, _ value: V) -> Where<O> {
        
        return Where("%K > %@", attribute.keyPath, value)
    }
    
    /**
-     Creates a `Where` clause from a `CoreStoreObject.Value` property.
+     Creates a `Where` clause by comparing if a property is less than or equal to a value
     ```
-     let person = CoreStore.fetchOne(From<Person>(), Person.where { $0.age <= 20 })
+     let person = CoreStore.fetchOne(From<Person>().where({ $0.age <= 20 }))
     ```
     */
-    @inline(__always)
-    public static func <= (_ attribute: ValueContainer<O>.Required<V>, _ value: V) -> Where {
+    public static func <= (_ attribute: ValueContainer<O>.Required<V>, _ value: V) -> Where<O> {
        
        return Where("%K <= %@", attribute.keyPath, value)
    }
    
    /**
-     Creates a `Where` clause from a `CoreStoreObject.Value` property.
+     Creates a `Where` clause by comparing if a property is greater than or equal to a value
     ```
-     let person = CoreStore.fetchOne(From<Person>(), Person.where { $0.age >= 20 })
+     let person = CoreStore.fetchOne(From<Person>().where({ $0.age >= 20 }))
     ```
     */
-    @inline(__always)
-    public static func >= (_ attribute: ValueContainer<O>.Required<V>, _ value: V) -> Where {
+    public static func >= (_ attribute: ValueContainer<O>.Required<V>, _ value: V) -> Where<O> {
        
        return Where("%K >= %@", attribute.keyPath, value)
    }
+    
+    /**
+     Creates a `Where` clause by checking if a sequence contains the value of a property
+     ```
+     let dog = CoreStore.fetchOne(From<Dog>().where({ ["Pluto", "Snoopy", "Scooby"] ~= $0.nickname }))
+     ```
+     */
+    public static func ~= <S: Sequence>(_ sequence: S, _ attribute: ValueContainer<O>.Required<V>) -> Where<O> where S.Iterator.Element == V {
+        
+        return Where(attribute.keyPath, isMemberOf: sequence)
+    }
 }


@@ -171,26 +115,212 @@ public extension ValueContainer.Required {
 public extension ValueContainer.Optional {
    
    /**
-     Creates a `Where` clause from a `CoreStoreObject.Value` property.
+     Creates a `Where` clause by comparing if a property is equal to a value
     ```
-     let person = CoreStore.fetchOne(From<Person>(), Person.where { $0.nickname == "John" })
+     let person = CoreStore.fetchOne(From<Person>().where({ $0.nickname == "John" }))
     ```
     */
-    @inline(__always)
-    public static func == (_ attribute: ValueContainer<O>.Optional<V>, _ value: V?) -> Where {
+    public static func == (_ attribute: ValueContainer<O>.Optional<V>, _ value: V?) -> Where<O> {
        
        return Where(attribute.keyPath, isEqualTo: value)
    }
    
    /**
-     Creates a `Where` clause from a `CoreStoreObject.Value` property.
+     Creates a `Where` clause by comparing if a property is not equal to a value
     ```
-     let person = CoreStore.fetchOne(From<Person>(), Person.where { $0.nickname != "John" })
+     let person = CoreStore.fetchOne(From<Person>().where({ $0.nickname != "John" }))
     ```
     */
-    @inline(__always)
-    public static func != (_ attribute: ValueContainer<O>.Optional<V>, _ value: V?) -> Where {
+    public static func != (_ attribute: ValueContainer<O>.Optional<V>, _ value: V?) -> Where<O> {
        
        return !Where(attribute.keyPath, isEqualTo: value)
    }
+    
+    /**
+     Creates a `Where` clause by comparing if a property is less than a value
+     ```
+     let person = CoreStore.fetchOne(From<Person>().where({ $0.age < 20 }))
+     ```
+     */
+    public static func < (_ attribute: ValueContainer<O>.Optional<V>, _ value: V?) -> Where<O> {
+        
+        if let value = value {
+            
+            return Where("%K < %@", attribute.keyPath, value)
+        }
+        else {
+            
+            return Where("%K < nil", attribute.keyPath)
+        }
+    }
+    
+    /**
+     Creates a `Where` clause by comparing if a property is greater than a value
+     ```
+     let person = CoreStore.fetchOne(From<Person>().where({ $0.age > 20 }))
+     ```
+     */
+    public static func > (_ attribute: ValueContainer<O>.Optional<V>, _ value: V?) -> Where<O> {
+        
+        if let value = value {
+            
+            return Where("%K > %@", attribute.keyPath, value)
+        }
+        else {
+            
+            return Where("%K > nil", attribute.keyPath)
+        }
+    }
+    
+    /**
+     Creates a `Where` clause by comparing if a property is less than or equal to a value
+     ```
+     let person = CoreStore.fetchOne(From<Person>().where({ $0.age <= 20 }))
+     ```
+     */
+    public static func <= (_ attribute: ValueContainer<O>.Optional<V>, _ value: V?) -> Where<O> {
+        
+        if let value = value {
+            
+            return Where("%K <= %@", attribute.keyPath, value)
+        }
+        else {
+            
+            return Where("%K <= nil", attribute.keyPath)
+        }
+    }
+    
+    /**
+     Creates a `Where` clause by comparing if a property is greater than or equal to a value
+     ```
+     let person = CoreStore.fetchOne(From<Person>().where({ $0.age >= 20 }))
+     ```
+     */
+    public static func >= (_ attribute: ValueContainer<O>.Optional<V>, _ value: V?) -> Where<O> {
+        
+        if let value = value {
+            
+            return Where("%K >= %@", attribute.keyPath, value)
+        }
+        else {
+            
+            return Where("%K >= nil", attribute.keyPath)
+        }
+    }
+    
+    /**
+     Creates a `Where` clause by checking if a sequence contains the value of a property
+     ```
+     let dog = CoreStore.fetchOne(From<Dog>().where({ ["Pluto", "Snoopy", "Scooby"] ~= $0.nickname }))
+     ```
+     */
+    public static func ~= <S: Sequence>(_ sequence: S, _ attribute: ValueContainer<O>.Optional<V>) -> Where<O> where S.Iterator.Element == V {
+        
+        return Where(attribute.keyPath, isMemberOf: sequence)
+    }
+}
+
+
+// MARK: - RelationshipContainer.ToOne
+
+public extension RelationshipContainer.ToOne {
+    
+    /**
+     Creates a `Where` clause by comparing if a property is equal to a value
+     ```
+     let dog = CoreStore.fetchOne(From<Dog>().where({ $0.master == me }))
+     ```
+     */
+    public static func == (_ relationship: RelationshipContainer<O>.ToOne<D>, _ object: D?) -> Where<O> {
+        
+        return Where(relationship.keyPath, isEqualTo: object)
+    }
+    
+    /**
+     Creates a `Where` clause by comparing if a property is not equal to a value
+     ```
+     let dog = CoreStore.fetchOne(From<Dog>().where({ $0.master != me }))
+     ```
+     */
+    public static func != (_ relationship: RelationshipContainer<O>.ToOne<D>, _ object: D?) -> Where<O> {
+        
+        return !Where(relationship.keyPath, isEqualTo: object)
+    }
+    
+    /**
+     Creates a `Where` clause by checking if a sequence contains the value of a property
+     ```
+     let dog = CoreStore.fetchOne(From<Dog>().where({ [john, joe, bob] ~= $0.master }))
+     ```
+     */
+    public static func ~= <S: Sequence>(_ sequence: S, _ relationship: RelationshipContainer<O>.ToOne<D>) -> Where<O> where S.Iterator.Element == D {
+        
+        return Where(relationship.keyPath, isMemberOf: sequence)
+    }
+}
+
+
+// MARK: Deprecated
+
+extension DynamicObject where Self: CoreStoreObject {
+    
+    @available(*, deprecated, message: "Use the String(keyPath:) initializer and pass the KeyPath: String(keyPath: \\Person.name)")
+    public static func keyPath<O, V>(_ attribute: (Self) -> ValueContainer<O>.Required<V>) -> String  {
+        
+        return attribute(self.meta).keyPath
+    }
+    
+    @available(*, deprecated, message: "Use the String(keyPath:) initializer and pass the KeyPath: String(keyPath: \\Person.name)")
+    public static func keyPath<O, V>(_ attribute: (Self) -> ValueContainer<O>.Optional<V>) -> String  {
+        
+        return attribute(self.meta).keyPath
+    }
+    
+    @available(*, deprecated, message: "Use the String(keyPath:) initializer and pass the KeyPath: String(keyPath: \\Person.friend)")
+    public static func keyPath<O, D>(_ relationship: (Self) -> RelationshipContainer<O>.ToOne<D>) -> String  {
+        
+        return relationship(self.meta).keyPath
+    }
+    
+    @available(*, deprecated, message: "Use the String(keyPath:) initializer and pass the KeyPath: String(keyPath: \\Person.friends)")
+    public static func keyPath<O, D>(_ relationship: (Self) -> RelationshipContainer<O>.ToManyOrdered<D>) -> String  {
+        
+        return relationship(self.meta).keyPath
+    }
+    
+    @available(*, deprecated, message: "Use the String(keyPath:) initializer and pass the KeyPath: String(keyPath: \\Person.friends)")
+    public static func keyPath<O, D>(_ relationship: (Self) -> RelationshipContainer<O>.ToManyUnordered<D>) -> String  {
+        
+        return relationship(self.meta).keyPath
+    }
+    
+    @available(*, deprecated, message: "Use the Where<DynamicObject>(_:) initializer that accepts the same closure argument")
+    public static func `where`(_ condition: (Self) -> Where<Self>) -> Where<Self>  {
+        
+        return condition(self.meta)
+    }
+    
+    @available(*, deprecated, message: "Use the new OrderBy<DynamicObject>(ascending:) overload that accepts the same closure argument")
+    public static func orderBy<O, V>(ascending attribute: (Self) -> ValueContainer<O>.Required<V>) -> OrderBy<Self>  {
+        
+        return OrderBy(.ascending(attribute(self.meta).keyPath))
+    }
+    
+    @available(*, deprecated, message: "Use the new OrderBy<DynamicObject>(ascending:) overload that accepts the same closure argument")
+    public static func orderBy<O, V>(ascending attribute: (Self) -> ValueContainer<O>.Optional<V>) -> OrderBy<Self>  {
+        
+        return OrderBy(.ascending(attribute(self.meta).keyPath))
+    }
+    
+    @available(*, deprecated, message: "Use the new OrderBy<DynamicObject>(descending:) overload that accepts the same closure argument")
+    public static func orderBy<O, V>(descending attribute: (Self) -> ValueContainer<O>.Required<V>) -> OrderBy<Self>  {
+        
+        return OrderBy(.descending(attribute(self.meta).keyPath))
+    }
+    
+    @available(*, deprecated, message: "Use the new OrderBy<DynamicObject>(descending:) overload that accepts the same closure argument")
+    public static func orderBy<O, V>(descending attribute: (Self) -> ValueContainer<O>.Optional<V>) -> OrderBy<Self>  {
+        
+        return OrderBy(.descending(attribute(self.meta).keyPath))
+    }
 }
--- a/Sources/CoreStoreObject.swift
+++ b/Sources/CoreStoreObject.swift
@@ -33,13 +33,13 @@ import Foundation
 The `CoreStoreObject` is an abstract class for creating CoreStore-managed objects that are more type-safe and more convenient than `NSManagedObject` subclasses. The model entities for `CoreStoreObject` subclasses are inferred from the Swift declaration themselves; no .xcdatamodeld files are needed. To declare persisted attributes and relationships for the `CoreStoreObject` subclass, declare properties of type `Value.Required<T>`, `Value.Optional<T>` for values, or `Relationship.ToOne<T>`, `Relationship.ToManyOrdered<T>`, `Relationship.ToManyUnordered<T>` for relationships.
 ```
 class Animal: CoreStoreObject {
-     let species = Value.Required<String>("species")
+     let species = Value.Required<String>("species", initial: "")
     let nickname = Value.Optional<String>("nickname")
     let master = Relationship.ToOne<Person>("master")
 }
 
 class Person: CoreStoreObject {
-     let name = Value.Required<String>("name")
+     let name = Value.Required<String>("name", initial: "")
     let pet = Relationship.ToOne<Animal>("pet", inverse: { $0.master })
 }
 ```
@@ -68,8 +68,8 @@ open /*abstract*/ class CoreStoreObject: DynamicObject, Hashable {
    public required init(rawObject: NSManagedObject) {
        
        self.isMeta = false
-        self.rawObject = rawObject
-        self.initializeAttributes(Mirror(reflecting: self), { [unowned self] in self })
+        self.rawObject = (rawObject as! CoreStoreManagedObject)
+        self.initializeAttributes(Mirror(reflecting: self), self)
    }
    
    /**
@@ -110,13 +110,13 @@ open /*abstract*/ class CoreStoreObject: DynamicObject, Hashable {
    
    // MARK: Internal
    
-    internal let rawObject: NSManagedObject?
+    internal let rawObject: CoreStoreManagedObject?
    internal let isMeta: Bool
    
    
    // MARK: Private
    
-    private func initializeAttributes(_ mirror: Mirror, _ parentObject: @escaping () -> CoreStoreObject) {
+    private func initializeAttributes(_ mirror: Mirror, _ parentObject: CoreStoreObject) {
        
        _ = mirror.superclassMirror.flatMap({ self.initializeAttributes($0, parentObject) })
        for child in mirror.children {
@@ -135,3 +135,26 @@ open /*abstract*/ class CoreStoreObject: DynamicObject, Hashable {
        }
    }
 }
+
+
+// MARK: - DynamicObject where Self: CoreStoreObject
+
+public extension DynamicObject where Self: CoreStoreObject {
+    
+    /**
+     Returns the `PartialObject` instance for the object, which acts as a fast, type-safe KVC interface for `CoreStoreObject`.
+     */
+    public func partialObject() -> PartialObject<Self> {
+        
+        CoreStore.assert(
+            !self.isMeta,
+            "Attempted to create a \(cs_typeName(PartialObject<Self>.self)) from a meta object. Meta objects are only used for querying keyPaths and infering types."
+        )
+        return PartialObject<Self>(self.rawObject!)
+    }
+    
+    internal static var meta: Self {
+        
+        return self.init(asMeta: ())
+    }
+}
--- a/Sources/CoreStoreSchema.swift
+++ b/Sources/CoreStoreSchema.swift
@@ -33,13 +33,13 @@ import Foundation
 The `CoreStoreSchema` describes models written for `CoreStoreObject` Swift class declarations for a particular model version. `CoreStoreObject` entities for a model version should be added to `CoreStoreSchema` instance.
 ```
 class Animal: CoreStoreObject {
-     let species = Value.Required<String>("species")
+     let species = Value.Required<String>("species", initial: "")
     let nickname = Value.Optional<String>("nickname")
     let master = Relationship.ToOne<Person>("master")
 }
 
 class Person: CoreStoreObject {
-     let name = Value.Required<String>("name")
+     let name = Value.Required<String>("name", initial: "")
     let pet = Relationship.ToOne<Animal>("pet", inverse: { $0.master })
 }
 
@@ -66,13 +66,13 @@ public final class CoreStoreSchema: DynamicSchema {
     Initializes a `CoreStoreSchema`. Using this initializer only if the entities don't need to be assigned to particular "Configurations". To use multiple configurations (for example, to separate entities in different `StorageInterface`s), use the `init(modelVersion:entitiesByConfiguration:versionLock:)` initializer.
     ```
     class Animal: CoreStoreObject {
-         let species = Value.Required<String>("species")
+         let species = Value.Required<String>("species", initial: "")
         let nickname = Value.Optional<String>("nickname")
         let master = Relationship.ToOne<Person>("master")
     }
     
     class Person: CoreStoreObject {
-         let name = Value.Required<String>("name")
+         let name = Value.Required<String>("name", initial: "")
         let pet = Relationship.ToOne<Animal>("pet", inverse: { $0.master })
     }
     
@@ -112,12 +112,12 @@ public final class CoreStoreSchema: DynamicSchema {
     Initializes a `CoreStoreSchema`. Using this initializer if multiple "Configurations" (for example, to separate entities in different `StorageInterface`s) are needed. To add an entity only to the default configuration, assign an empty set to its configurations list. Note that regardless of the set configurations, all entities will be added to the default configuration.
     ```
     class Animal: CoreStoreObject {
-         let species = Value.Required<String>("species")
+         let species = Value.Required<String>("species", initial: "")
         let nickname = Value.Optional<String>("nickname")
     }
     
     class Person: CoreStoreObject {
-         let name = Value.Required<String>("name")
+         let name = Value.Required<String>("name", initial: "")
     }
     
     CoreStore.defaultStack = DataStack(
@@ -200,35 +200,44 @@ public final class CoreStoreSchema: DynamicSchema {
    
    public func rawModel() -> NSManagedObjectModel {
        
-        if let cachedRawModel = self.cachedRawModel {
+        return CoreStoreSchema.barrierQueue.sync(flags: .barrier) {
            
-            return cachedRawModel
-        }
-        let rawModel = NSManagedObjectModel()
-        var entityDescriptionsByEntity: [DynamicEntity: NSEntityDescription] = [:]
-        for entity in self.allEntities {
-            
-            let entityDescription = self.entityDescription(
-                for: entity,
-                initializer: CoreStoreSchema.firstPassCreateEntityDescription
+            if let cachedRawModel = self.cachedRawModel {
+                
+                return cachedRawModel
+            }
+            let rawModel = NSManagedObjectModel()
+            var entityDescriptionsByEntity: [DynamicEntity: NSEntityDescription] = [:]
+            var allCustomGettersSetters: [DynamicEntity: [KeyPathString: CoreStoreManagedObject.CustomGetterSetter]] = [:]
+            for entity in self.allEntities {
+                
+                let (entityDescription, customGetterSetterByKeyPaths) = self.entityDescription(
+                    for: entity,
+                    initializer: CoreStoreSchema.firstPassCreateEntityDescription(from:in:)
+                )
+                entityDescriptionsByEntity[entity] = (entityDescription.copy() as! NSEntityDescription)
+                allCustomGettersSetters[entity] = customGetterSetterByKeyPaths
+            }
+            CoreStoreSchema.secondPassConnectRelationshipAttributes(for: entityDescriptionsByEntity)
+            CoreStoreSchema.thirdPassConnectInheritanceTree(for: entityDescriptionsByEntity)
+            CoreStoreSchema.fourthPassSynthesizeManagedObjectClasses(
+                for: entityDescriptionsByEntity,
+                allCustomGettersSetters: allCustomGettersSetters
            )
-            entityDescriptionsByEntity[entity] = (entityDescription.copy() as! NSEntityDescription)
-        }
-        CoreStoreSchema.secondPassConnectRelationshipAttributes(for: entityDescriptionsByEntity)
-        CoreStoreSchema.thirdPassConnectInheritanceTree(for: entityDescriptionsByEntity)
-        
-        rawModel.entities = entityDescriptionsByEntity.values.sorted(by: { $0.name! < $1.name! })
-        for (configuration, entities) in self.entitiesByConfiguration {
            
-            rawModel.setEntities(
-                entities
-                    .map({ entityDescriptionsByEntity[$0]! })
-                    .sorted(by: { $0.name! < $1.name! }),
-                forConfigurationName: configuration
-            )
+            rawModel.entities = entityDescriptionsByEntity.values.sorted(by: { $0.name! < $1.name! })
+            for (configuration, entities) in self.entitiesByConfiguration {
+                
+                rawModel.setEntities(
+                    entities
+                        .map({ entityDescriptionsByEntity[$0]! })
+                        .sorted(by: { $0.name! < $1.name! }),
+                    forConfigurationName: configuration
+                )
+            }
+            self.cachedRawModel = rawModel
+            return rawModel
        }
-        self.cachedRawModel = rawModel
-        return rawModel
    }
    
    
@@ -244,28 +253,33 @@ public final class CoreStoreSchema: DynamicSchema {
    private let allEntities: Set<DynamicEntity>
    
    private var entityDescriptionsByEntity: [DynamicEntity: NSEntityDescription] = [:]
+    private var customGettersSettersByEntity: [DynamicEntity: [KeyPathString: CoreStoreManagedObject.CustomGetterSetter]] = [:]
    private weak var cachedRawModel: NSManagedObjectModel?
    
-    private func entityDescription(for entity: DynamicEntity, initializer: (DynamicEntity) -> NSEntityDescription) -> NSEntityDescription {
+    private func entityDescription(for entity: DynamicEntity, initializer: (DynamicEntity, ModelVersion) -> (entity: NSEntityDescription, customGetterSetterByKeyPaths: [KeyPathString: CoreStoreManagedObject.CustomGetterSetter])) -> (entity: NSEntityDescription, customGetterSetterByKeyPaths: [KeyPathString: CoreStoreManagedObject.CustomGetterSetter]) {
        
        if let cachedEntityDescription = self.entityDescriptionsByEntity[entity] {
            
-            return cachedEntityDescription
+            return (cachedEntityDescription, self.customGettersSettersByEntity[entity] ?? [:])
        }
-        let entityDescription = withoutActuallyEscaping(initializer, do: { $0(entity) })
+        let modelVersion = self.modelVersion
+        let (entityDescription, customGetterSetterByKeyPaths) = withoutActuallyEscaping(initializer, do: { $0(entity, modelVersion) })
        self.entityDescriptionsByEntity[entity] = entityDescription
-        return entityDescription
+        self.customGettersSettersByEntity[entity] = customGetterSetterByKeyPaths
+        return (entityDescription, customGetterSetterByKeyPaths)
    }
    
-    private static func firstPassCreateEntityDescription(from entity: DynamicEntity) -> NSEntityDescription {
+    private static func firstPassCreateEntityDescription(from entity: DynamicEntity, in modelVersion: ModelVersion) -> (entity: NSEntityDescription, customGetterSetterByKeyPaths: [KeyPathString: CoreStoreManagedObject.CustomGetterSetter]) {
        
        let entityDescription = NSEntityDescription()
        entityDescription.coreStoreEntity = entity
        entityDescription.name = entity.entityName
        entityDescription.isAbstract = entity.isAbstract
        entityDescription.versionHashModifier = entity.versionHashModifier
-        entityDescription.managedObjectClassName = NSStringFromClass(NSManagedObject.self)
+        entityDescription.managedObjectClassName = CoreStoreManagedObject.cs_subclassName(for: entity, in: modelVersion)
        
+        var keyPathsByAffectedKeyPaths: [KeyPathString: Set<KeyPathString>] = [:]
+        var customGetterSetterByKeyPaths: [KeyPathString: CoreStoreManagedObject.CustomGetterSetter] = [:]
        func createProperties(for type: CoreStoreObject.Type) -> [NSPropertyDescription] {
            
            var propertyDescriptions: [NSPropertyDescription] = []
@@ -276,14 +290,16 @@ public final class CoreStoreSchema: DynamicSchema {
                case let attribute as AttributeProtocol:
                    let description = NSAttributeDescription()
                    description.name = attribute.keyPath
-                    description.attributeType = type(of: attribute).attributeType
+                    description.attributeType = Swift.type(of: attribute).attributeType
                    description.isOptional = attribute.isOptional
                    description.isIndexed = attribute.isIndexed
-                    description.defaultValue = attribute.defaultValue
+                    description.defaultValue = attribute.defaultValue()
                    description.isTransient = attribute.isTransient
-                    description.versionHashModifier = attribute.versionHashModifier
-                    description.renamingIdentifier = attribute.renamingIdentifier
+                    description.versionHashModifier = attribute.versionHashModifier()
+                    description.renamingIdentifier = attribute.renamingIdentifier()
                    propertyDescriptions.append(description)
+                    keyPathsByAffectedKeyPaths[attribute.keyPath] = attribute.affectedByKeyPaths()
+                    customGetterSetterByKeyPaths[attribute.keyPath] = (attribute.getter, attribute.setter)
                    
                case let relationship as RelationshipProtocol:
                    let description = NSRelationshipDescription()
@@ -292,9 +308,10 @@ public final class CoreStoreSchema: DynamicSchema {
                    description.maxCount = relationship.maxCount
                    description.isOrdered = relationship.isOrdered
                    description.deleteRule = relationship.deleteRule
-                    description.versionHashModifier = relationship.versionHashModifier
-                    description.renamingIdentifier = relationship.renamingIdentifier
+                    description.versionHashModifier = relationship.versionHashModifier()
+                    description.renamingIdentifier = relationship.renamingIdentifier()
                    propertyDescriptions.append(description)
+                    keyPathsByAffectedKeyPaths[relationship.keyPath] = relationship.affectedByKeyPaths()
                    
                default:
                    continue
@@ -302,9 +319,9 @@ public final class CoreStoreSchema: DynamicSchema {
            }
            return propertyDescriptions
        }
-        
        entityDescription.properties = createProperties(for: entity.type as! CoreStoreObject.Type)
-        return entityDescription
+        entityDescription.keyPathsByAffectedKeyPaths = keyPathsByAffectedKeyPaths
+        return (entityDescription, customGetterSetterByKeyPaths)
    }
    
    private static func secondPassConnectRelationshipAttributes(for entityDescriptionsByEntity: [DynamicEntity: NSEntityDescription]) {
@@ -425,4 +442,112 @@ public final class CoreStoreSchema: DynamicSchema {
            )
        }
    }
+    
+    private static func fourthPassSynthesizeManagedObjectClasses(for entityDescriptionsByEntity: [DynamicEntity: NSEntityDescription], allCustomGettersSetters: [DynamicEntity: [KeyPathString: CoreStoreManagedObject.CustomGetterSetter]]) {
+        
+        func createManagedObjectSubclass(for entityDescription: NSEntityDescription, customGetterSetterByKeyPaths: [KeyPathString: CoreStoreManagedObject.CustomGetterSetter]?) {
+            
+            let superEntity = entityDescription.superentity
+            let className = entityDescription.managedObjectClassName!
+            guard case nil = NSClassFromString(className) as! CoreStoreManagedObject.Type? else {
+                
+                return
+            }
+            if let superEntity = superEntity {
+                
+                createManagedObjectSubclass(
+                    for: superEntity,
+                    customGetterSetterByKeyPaths: superEntity.coreStoreEntity.flatMap({ allCustomGettersSetters[$0] })
+                )
+            }
+            let superClass = cs_lazy { () -> CoreStoreManagedObject.Type in
+                
+                if let superClassName = superEntity?.managedObjectClassName,
+                    let superClass = NSClassFromString(superClassName) {
+                    
+                    return superClass as! CoreStoreManagedObject.Type
+                }
+                return CoreStoreManagedObject.self
+            }
+            let managedObjectClass: AnyClass = className.withCString {
+                
+                return objc_allocateClassPair(superClass, $0, 0)!
+            }
+            defer {
+            
+                objc_registerClassPair(managedObjectClass)
+            }
+            
+            func capitalize(_ string: String) -> String {
+                
+                return string.replacingCharacters(
+                    in: Range(uncheckedBounds: (string.startIndex, string.index(after: string.startIndex))),
+                    with: String(string[string.startIndex]).uppercased()
+                )
+            }
+            for (attributeName, customGetterSetters) in (customGetterSetterByKeyPaths ?? [:])
+                where customGetterSetters.getter != nil || customGetterSetters.setter != nil {
+                    
+                    if let getter = customGetterSetters.getter {
+                        
+                        let getterName = "\(attributeName)"
+                        guard class_addMethod(
+                            managedObjectClass,
+                            NSSelectorFromString(getterName),
+                            imp_implementationWithBlock(getter),
+                            "@@:") else {
+                                
+                                CoreStore.abort("Could not dynamically add getter method \"\(getterName)\" to class \(cs_typeName(managedObjectClass))")
+                        }
+                    }
+                    if let setter = customGetterSetters.setter {
+                        
+                        let setterName = "set\(capitalize(attributeName)):"
+                        guard class_addMethod(
+                            managedObjectClass,
+                            NSSelectorFromString(setterName),
+                            imp_implementationWithBlock(setter),
+                            "v@:@") else {
+                                
+                                CoreStore.abort("Could not dynamically add setter method \"\(setterName)\" to class \(cs_typeName(managedObjectClass))")
+                        }
+                    }
+            }
+            
+            let newSelector = NSSelectorFromString("cs_keyPathsForValuesAffectingValueForKey:")
+            let keyPathsByAffectedKeyPaths = entityDescription.keyPathsByAffectedKeyPaths
+            let keyPathsForValuesAffectingValue: @convention(block) (Any, String) -> Set<String> = { (instance, keyPath) in
+                
+                if let keyPaths = keyPathsByAffectedKeyPaths[keyPath] {
+                    
+                    return keyPaths
+                }
+                return []
+            }
+            let origSelector = #selector(NSManagedObject.keyPathsForValuesAffectingValue(forKey:))
+            
+            let metaClass: AnyClass = object_getClass(managedObjectClass)!
+            let origMethod = class_getClassMethod(managedObjectClass, origSelector)!
+            
+            let origImp = method_getImplementation(origMethod)
+            let newImp = imp_implementationWithBlock(keyPathsForValuesAffectingValue)
+            
+            if class_addMethod(metaClass, origSelector, newImp, method_getTypeEncoding(origMethod)) {
+                
+                class_replaceMethod(metaClass, newSelector, origImp, method_getTypeEncoding(origMethod))
+            }
+            else {
+                
+                let newMethod = class_getClassMethod(managedObjectClass, newSelector)!
+                method_exchangeImplementations(origMethod, newMethod)
+            }
+        }
+        for (dynamicEntity, entityDescription) in entityDescriptionsByEntity {
+            
+            createManagedObjectSubclass(
+                for: entityDescription,
+                customGetterSetterByKeyPaths: allCustomGettersSetters[dynamicEntity]
+            )
+        }
+    }
 }
--- a/Sources/CoreStoreStrings.swift
+++ b/Sources/CoreStoreStrings.swift
@@ -64,3 +64,11 @@ public typealias EntityName = String
 An `String` that pertains to a dynamically-accessable class name (usable with NSClassFromString(...)).
 */
 public typealias ClassName = String
+
+
+// MARK: - KeyPathString
+
+/**
+ An `String` that pertains to a attribute keyPaths.
+ */
+public typealias KeyPathString = String
--- a/Sources/CustomSchemaMappingProvider.swift
+++ b/Sources/CustomSchemaMappingProvider.swift
@@ -32,7 +32,7 @@ import Foundation
 /**
 A `SchemaMappingProvider` that accepts custom mappings for some entities. Mappings of entities with no `CustomMapping` provided will be automatically calculated if possible.
 */
-open class CustomSchemaMappingProvider: Hashable, SchemaMappingProvider {
+public class CustomSchemaMappingProvider: Hashable, SchemaMappingProvider {
    
    /**
     The source model version for the mapping.
@@ -210,7 +210,7 @@ open class CustomSchemaMappingProvider: Hashable, SchemaMappingProvider {
        /**
         Accesses the property value via its keyPath.
         */
-        public subscript(attribute: KeyPath) -> Any? {
+        public subscript(attribute: KeyPathString) -> Any? {
            
            return self.rawObject.cs_accessValueForKVCKey(attribute)
        }
@@ -267,7 +267,7 @@ open class CustomSchemaMappingProvider: Hashable, SchemaMappingProvider {
        /**
         Accesses or mutates the property value via its keyPath.
         */
-        public subscript(attribute: KeyPath) -> Any? {
+        public subscript(attribute: KeyPathString) -> Any? {
            
            get { return self.rawObject.cs_accessValueForKVCKey(attribute) }
            set { self.rawObject.cs_setValue(newValue, forKVCKey: attribute) }
@@ -304,7 +304,7 @@ open class CustomSchemaMappingProvider: Hashable, SchemaMappingProvider {
        
        // MARK: Internal
        
-        internal init(_ rawObject: NSManagedObject, _ sourceAttributesByDestinationKey: [KeyPath: NSAttributeDescription]) {
+        internal init(_ rawObject: NSManagedObject, _ sourceAttributesByDestinationKey: [KeyPathString: NSAttributeDescription]) {
            
            self.rawObject = rawObject
            self.sourceAttributesByDestinationKey = sourceAttributesByDestinationKey
@@ -314,7 +314,7 @@ open class CustomSchemaMappingProvider: Hashable, SchemaMappingProvider {
        // MARK: FilePrivate
        
        fileprivate let rawObject: NSManagedObject
-        fileprivate let sourceAttributesByDestinationKey: [KeyPath: NSAttributeDescription]
+        fileprivate let sourceAttributesByDestinationKey: [KeyPathString: NSAttributeDescription]
    }
    
    
@@ -352,7 +352,7 @@ open class CustomSchemaMappingProvider: Hashable, SchemaMappingProvider {
        )
        func expression(forSource sourceEntity: NSEntityDescription) -> NSExpression {
            
-            return NSExpression(format: "FETCH(FUNCTION($\(NSMigrationManagerKey), \"fetchRequestForSourceEntityNamed:predicateString:\" , \"\(sourceEntity.name!)\", \"\(NSPredicate(value: true))\"), $\(NSMigrationManagerKey).\(#keyPath(NSMigrationManager.sourceContext)), \(false))")
+            return NSExpression(format: "FETCH(FUNCTION($\(NSMigrationManagerKey), \"fetchRequestForSourceEntityNamed:predicateString:\" , \"\(sourceEntity.name!)\", \"\(NSPredicate(value: true))\"), FUNCTION($\(NSMigrationManagerKey), \"\(#selector(getter: NSMigrationManager.sourceContext))\"), \(false))")
        }
        
        let sourceEntitiesByName = sourceModel.entitiesByName
@@ -427,22 +427,25 @@ open class CustomSchemaMappingProvider: Hashable, SchemaMappingProvider {
                    let destinationAttribute = destination.attribute
                    let propertyMapping = NSPropertyMapping()
                    propertyMapping.name = destinationAttribute.name
-                    propertyMapping.valueExpression = NSExpression(format: "$\(NSMigrationSourceObjectKey).\(sourceAttribute.name)")
+                    propertyMapping.valueExpression = NSExpression(format: "FUNCTION($\(NSMigrationSourceObjectKey), \"\(#selector(NSManagedObject.value(forKey:)))\", \"\(sourceAttribute.name)\")")
                    attributeMappings.append(propertyMapping)
                }
                return attributeMappings
            }
-            let entityMappingName = entityMapping.name!
            entityMapping.relationshipMappings = autoreleasepool { () -> [NSPropertyMapping] in
                
+                let sourceRelationships = sourceEntity.cs_resolvedRelationshipRenamingIdentities()
                let destinationRelationships = destinationEntity.cs_resolvedRelationshipRenamingIdentities()
                var relationshipMappings: [NSPropertyMapping] = []
-                for (_, destination) in destinationRelationships {
+                for (renamingIdentifier, destination) in destinationRelationships {
                    
+                    let sourceRelationship = sourceRelationships[renamingIdentifier]!.relationship
                    let destinationRelationship = destination.relationship
+                    let sourceRelationshipName = sourceRelationship.name
+
                    let propertyMapping = NSPropertyMapping()
                    propertyMapping.name = destinationRelationship.name
-                    propertyMapping.valueExpression = NSExpression(format: "FUNCTION($\(NSMigrationManagerKey), \"\(#selector(NSMigrationManager.destinationInstances(forEntityMappingName:sourceInstances:)))\" , \"\(entityMappingName)\", $\(NSMigrationSourceObjectKey))[0]")
+                    propertyMapping.valueExpression = NSExpression(format: "FUNCTION($\(NSMigrationManagerKey), \"destinationInstancesForSourceRelationshipNamed:sourceInstances:\", \"\(sourceRelationshipName)\", FUNCTION($\(NSMigrationSourceObjectKey), \"\(#selector(NSManagedObject.value(forKey:)))\", \"\(sourceRelationshipName)\"))")
                    relationshipMappings.append(propertyMapping)
                }
                return relationshipMappings
@@ -474,7 +477,7 @@ open class CustomSchemaMappingProvider: Hashable, SchemaMappingProvider {
                let transformedRenamingIdentifiers = Set(destinationAttributes.keys)
                    .intersection(sourceAttributes.keys)

-                var sourceAttributesByDestinationKey: [KeyPath: NSAttributeDescription] = [:]
+                var sourceAttributesByDestinationKey: [KeyPathString: NSAttributeDescription] = [:]
                for renamingIdentifier in transformedRenamingIdentifiers {
                    
                    let sourceAttribute = sourceAttributes[renamingIdentifier]!.attribute
@@ -483,17 +486,24 @@ open class CustomSchemaMappingProvider: Hashable, SchemaMappingProvider {
                }
                userInfo[CustomEntityMigrationPolicy.UserInfoKey.sourceAttributesByDestinationKey] = sourceAttributesByDestinationKey
            }
-            let entityMappingName = entityMapping.name!
            entityMapping.relationshipMappings = autoreleasepool { () -> [NSPropertyMapping] in
                
+                let sourceRelationships = sourceEntity.cs_resolvedRelationshipRenamingIdentities()
                let destinationRelationships = destinationEntity.cs_resolvedRelationshipRenamingIdentities()
+                let transformedRenamingIdentifiers = Set(destinationRelationships.keys)
+                    .intersection(sourceRelationships.keys)
+
                var relationshipMappings: [NSPropertyMapping] = []
-                for (_, destination) in destinationRelationships {
-                    
-                    let destinationRelationship = destination.relationship
+                for renamingIdentifier in transformedRenamingIdentifiers {
+
+                    let sourceRelationship = sourceRelationships[renamingIdentifier]!.relationship
+                    let destinationRelationship = destinationRelationships[renamingIdentifier]!.relationship
+                    let sourceRelationshipName = sourceRelationship.name
+                    let destinationRelationshipName = destinationRelationship.name
+
                    let propertyMapping = NSPropertyMapping()
-                    propertyMapping.name = destinationRelationship.name
-                    propertyMapping.valueExpression = NSExpression(format: "FUNCTION($\(NSMigrationManagerKey), \"\(#selector(NSMigrationManager.destinationInstances(forEntityMappingName:sourceInstances:)))\" , \"\(entityMappingName)\", $\(NSMigrationSourceObjectKey))[0]")
+                    propertyMapping.name = destinationRelationshipName
+                    propertyMapping.valueExpression = NSExpression(format: "FUNCTION($\(NSMigrationManagerKey), \"destinationInstancesForSourceRelationshipNamed:sourceInstances:\", \"\(sourceRelationshipName)\", FUNCTION($\(NSMigrationSourceObjectKey), \"\(#selector(NSManagedObject.value(forKey:)))\", \"\(sourceRelationshipName)\"))")
                    relationshipMappings.append(propertyMapping)
                }
                return relationshipMappings
@@ -525,7 +535,7 @@ open class CustomSchemaMappingProvider: Hashable, SchemaMappingProvider {
            
            let userInfo = mapping.userInfo!
            let transformer = userInfo[CustomEntityMigrationPolicy.UserInfoKey.transformer]! as! CustomMapping.Transformer
-            let sourceAttributesByDestinationKey = userInfo[CustomEntityMigrationPolicy.UserInfoKey.sourceAttributesByDestinationKey] as! [KeyPath: NSAttributeDescription]
+            let sourceAttributesByDestinationKey = userInfo[CustomEntityMigrationPolicy.UserInfoKey.sourceAttributesByDestinationKey] as! [KeyPathString: NSAttributeDescription]
            
            var destinationObject: UnsafeDestinationObject?
            try transformer(
@@ -545,11 +555,7 @@ open class CustomSchemaMappingProvider: Hashable, SchemaMappingProvider {
            )
            if let dInstance = destinationObject?.rawObject {
                
-                manager.associate(
-                    sourceInstance: sInstance,
-                    withDestinationInstance: dInstance,
-                    for: mapping
-                )
+                manager.associate(sourceInstance: sInstance, withDestinationInstance: dInstance, for: mapping)
            }
        }
        
@@ -579,8 +585,8 @@ open class CustomSchemaMappingProvider: Hashable, SchemaMappingProvider {
        var insertMappings: Set<CustomMapping> = []
        var copyMappings: Set<CustomMapping> = []
        var transformMappings: Set<CustomMapping> = []
-        var allMappedSourceKeys: [KeyPath: KeyPath] = [:]
-        var allMappedDestinationKeys: [KeyPath: KeyPath] = [:]
+        var allMappedSourceKeys: [KeyPathString: KeyPathString] = [:]
+        var allMappedDestinationKeys: [KeyPathString: KeyPathString] = [:]
        
        let sourceRenamingIdentifiers = sourceModel.cs_resolvedRenamingIdentities()
        let sourceEntityNames = sourceModel.entitiesByName
@@ -670,77 +676,76 @@ open class CustomSchemaMappingProvider: Hashable, SchemaMappingProvider {
                allMappedSourceKeys[sourceEntity] = destinationEntity
                allMappedDestinationKeys[destinationEntity] = sourceEntity
            }
+        }
+        for renamingIdentifier in transformedRenamingIdentifiers {
            
-            for renamingIdentifier in transformedRenamingIdentifiers {
+            let sourceEntity = sourceRenamingIdentifiers[renamingIdentifier]!.entity
+            let destinationEntity = destinationRenamingIdentifiers[renamingIdentifier]!.entity
+            let sourceEntityName = sourceEntity.name!
+            let destinationEntityName = destinationEntity.name!
+            switch (allMappedSourceKeys[sourceEntityName], allMappedDestinationKeys[destinationEntityName]) {
                
-                let sourceEntity = sourceRenamingIdentifiers[renamingIdentifier]!.entity
-                let destinationEntity = destinationRenamingIdentifiers[renamingIdentifier]!.entity
-                let sourceEntityName = sourceEntity.name!
-                let destinationEntityName = destinationEntity.name!
-                switch (allMappedSourceKeys[sourceEntityName], allMappedDestinationKeys[destinationEntityName]) {
+            case (nil, nil):
+                if sourceEntity.versionHash == destinationEntity.versionHash {
                    
-                case (nil, nil):
-                    if sourceEntity.versionHash == destinationEntity.versionHash {
-                        
-                        copyMappings.insert(
-                            .copyEntity(
-                                sourceEntity: sourceEntityName,
-                                destinationEntity: destinationEntityName
-                            )
+                    copyMappings.insert(
+                        .copyEntity(
+                            sourceEntity: sourceEntityName,
+                            destinationEntity: destinationEntityName
                        )
-                    }
-                    else {
-                        
-                        transformMappings.insert(
-                            .transformEntity(
-                                sourceEntity: sourceEntityName,
-                                destinationEntity: destinationEntityName,
-                                transformer: CustomMapping.inferredTransformation
-                            )
+                    )
+                }
+                else {
+                    
+                    transformMappings.insert(
+                        .transformEntity(
+                            sourceEntity: sourceEntityName,
+                            destinationEntity: destinationEntityName,
+                            transformer: CustomMapping.inferredTransformation
                        )
-                    }
-                    allMappedSourceKeys[sourceEntityName] = destinationEntityName
-                    allMappedDestinationKeys[destinationEntityName] = sourceEntityName
-                    
-                case (""?, nil):
-                    insertMappings.insert(.insertEntity(destinationEntity: destinationEntityName))
-                    allMappedDestinationKeys[destinationEntityName] = ""
-                    
-                case (nil, ""?):
-                    deleteMappings.insert(.deleteEntity(sourceEntity: sourceEntityName))
-                    allMappedSourceKeys[sourceEntityName] = ""
-                    
-                default:
-                    continue
+                    )
                }
-            }
-            for renamingIdentifier in removedRenamingIdentifiers {
+                allMappedSourceKeys[sourceEntityName] = destinationEntityName
+                allMappedDestinationKeys[destinationEntityName] = sourceEntityName
                
-                let sourceEntity = sourceRenamingIdentifiers[renamingIdentifier]!.entity
-                let sourceEntityName = sourceEntity.name!
-                switch allMappedSourceKeys[sourceEntityName] {
-                    
-                case nil:
-                    deleteMappings.insert(.deleteEntity(sourceEntity: sourceEntityName))
-                    allMappedSourceKeys[sourceEntityName] = ""
-                    
-                default:
-                    continue
-                }
-            }
-            for renamingIdentifier in addedRenamingIdentifiers {
+            case (""?, nil):
+                insertMappings.insert(.insertEntity(destinationEntity: destinationEntityName))
+                allMappedDestinationKeys[destinationEntityName] = ""
                
-                let destinationEntity = destinationRenamingIdentifiers[renamingIdentifier]!.entity
-                let destinationEntityName = destinationEntity.name!
-                switch allMappedDestinationKeys[destinationEntityName] {
-                    
-                case nil:
-                    insertMappings.insert(.insertEntity(destinationEntity: destinationEntityName))
-                    allMappedDestinationKeys[destinationEntityName] = ""
-                    
-                default:
-                    continue
-                }
+            case (nil, ""?):
+                deleteMappings.insert(.deleteEntity(sourceEntity: sourceEntityName))
+                allMappedSourceKeys[sourceEntityName] = ""
+                
+            default:
+                continue
+            }
+        }
+        for renamingIdentifier in removedRenamingIdentifiers {
+            
+            let sourceEntity = sourceRenamingIdentifiers[renamingIdentifier]!.entity
+            let sourceEntityName = sourceEntity.name!
+            switch allMappedSourceKeys[sourceEntityName] {
+                
+            case nil:
+                deleteMappings.insert(.deleteEntity(sourceEntity: sourceEntityName))
+                allMappedSourceKeys[sourceEntityName] = ""
+                
+            default:
+                continue
+            }
+        }
+        for renamingIdentifier in addedRenamingIdentifiers {
+            
+            let destinationEntity = destinationRenamingIdentifiers[renamingIdentifier]!.entity
+            let destinationEntityName = destinationEntity.name!
+            switch allMappedDestinationKeys[destinationEntityName] {
+                
+            case nil:
+                insertMappings.insert(.insertEntity(destinationEntity: destinationEntityName))
+                allMappedDestinationKeys[destinationEntityName] = ""
+                
+            default:
+                continue
            }
        }
        return (deleteMappings, insertMappings, copyMappings, transformMappings)
--- a/Sources/DataStack+Migration.swift
+++ b/Sources/DataStack+Migration.swift
@@ -47,7 +47,7 @@ public extension DataStack {
     - parameter storage: the storage
     - parameter completion: the closure to be executed on the main queue when the process completes, either due to success or failure. The closure's `SetupResult` argument indicates the result. Note that the `StorageInterface` associated to the `SetupResult.success` may not always be the same instance as the parameter argument if a previous `StorageInterface` was already added at the same URL and with the same configuration.
     */
-    public func addStorage<T: StorageInterface>(_ storage: T, completion: @escaping (SetupResult<T>) -> Void) {
+    public func addStorage<T>(_ storage: T, completion: @escaping (SetupResult<T>) -> Void) {
        
        self.coordinator.performAsynchronously {
            
@@ -575,6 +575,7 @@ public extension DataStack {
                                sourceModel: sourceModel,
                                destinationModel: destinationModel,
                                mappingModel: mappingModel,
+                                migrationType: migrationType,
                                progress: childProgress
                            )
                        }
@@ -647,8 +648,9 @@ public extension DataStack {
                let mappingProviders = storage.migrationMappingProviders
                do {
                    
-                    try withExtendedLifetime((sourceSchema.rawModel(), destinationSchema.rawModel())) { (sourceModel, destinationModel) in
+                    try withExtendedLifetime((sourceSchema.rawModel(), destinationSchema.rawModel())) {
                        
+                        let (sourceModel, destinationModel) = $0
                        let mapping = try mappingProviders.findMapping(
                            sourceSchema: sourceSchema,
                            destinationSchema: destinationSchema,
@@ -679,10 +681,74 @@ public extension DataStack {
        return nil
    }
    
-    private func startMigrationForStorage<T: LocalStorage>(_ storage: T, sourceModel: NSManagedObjectModel, destinationModel: NSManagedObjectModel, mappingModel: NSMappingModel, progress: Progress) throws {
+    private func startMigrationForStorage<T: LocalStorage>(_ storage: T, sourceModel: NSManagedObjectModel, destinationModel: NSManagedObjectModel, mappingModel: NSMappingModel, migrationType: MigrationType, progress: Progress) throws {
+        
+        do {
+            
+            try storage.cs_finalizeStorageAndWait(soureModelHint: sourceModel)
+        }
+        catch {
+            
+            throw CoreStoreError(error)
+        }
        
        let fileURL = storage.fileURL
-        
+        if case .lightweight = migrationType {
+
+            do {
+
+                let timerQueue = DispatchQueue(
+                    label: "DataStack.lightweightMigration.timerQueue",
+                    qos: .utility,
+                    attributes: []
+                )
+                let estimatedTime: TimeInterval = 60 * 3 // 3 mins
+                let interval: TimeInterval = 1
+                let fakeTotalUnitCount: Float = 0.9 * Float(progress.totalUnitCount)
+                var fakeProgress: Float = 0
+                
+                var recursiveCheck: () -> Void = {}
+                recursiveCheck = {
+                    
+                    guard fakeProgress < 1 else {
+                        
+                        return
+                    }
+                    progress.completedUnitCount = Int64(fakeTotalUnitCount * fakeProgress)
+                    fakeProgress += Float(interval / estimatedTime)
+                    
+                    timerQueue.asyncAfter(
+                        deadline: .now() + interval,
+                        execute: recursiveCheck
+                    )
+                }
+                timerQueue.async(execute: recursiveCheck)
+                
+                _ = try withExtendedLifetime(NSPersistentStoreCoordinator(managedObjectModel: destinationModel)) { (coordinator: NSPersistentStoreCoordinator) in
+                    
+                    try coordinator.addPersistentStoreSynchronously(
+                        type(of: storage).storeType,
+                        configuration: storage.configuration,
+                        URL: fileURL,
+                        options: storage.dictionary(
+                            forOptions: storage.localStorageOptions.union(.allowSynchronousLightweightMigration)
+                        )
+                    )
+                }
+                timerQueue.sync {
+                    
+                    fakeProgress = 1
+                }
+                try storage.cs_finalizeStorageAndWait(soureModelHint: destinationModel)
+                progress.completedUnitCount = progress.totalUnitCount
+                return
+            }
+            catch {
+
+                throw CoreStoreError(error)
+            }
+        }
+
        let temporaryDirectoryURL = URL(fileURLWithPath: NSTemporaryDirectory(), isDirectory: true)
            .appendingPathComponent(Bundle.main.bundleIdentifier ?? "com.CoreStore.DataStack")
            .appendingPathComponent(ProcessInfo().globallyUniqueString)
@@ -716,6 +782,13 @@ public extension DataStack {
                destinationType: type(of: storage).storeType,
                destinationOptions: nil
            )
+            let temporaryStorage = SQLiteStore(
+                fileURL: temporaryFileURL,
+                configuration: storage.configuration,
+                migrationMappingProviders: storage.migrationMappingProviders,
+                localStorageOptions: storage.localStorageOptions
+            )
+            try temporaryStorage.cs_finalizeStorageAndWait(soureModelHint: destinationModel)
        }
        catch {
            
--- a/Sources/DataStack+Observing.swift
+++ b/Sources/DataStack+Observing.swift
@@ -38,7 +38,7 @@ public extension DataStack {
     - parameter object: the `DynamicObject` to observe changes from
     - returns: a `ObjectMonitor` that monitors changes to `object`
     */
-    public func monitorObject<T: DynamicObject>(_ object: T) -> ObjectMonitor<T> {
+    public func monitorObject<D>(_ object: D) -> ObjectMonitor<D> {
        
        CoreStore.assert(
            Thread.isMainThread,
@@ -54,7 +54,7 @@ public extension DataStack {
     - parameter fetchClauses: a series of `FetchClause` instances for fetching the object list. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: a `ListMonitor` instance that monitors changes to the list
     */
-    public func monitorList<T: DynamicObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> ListMonitor<T> {
+    public func monitorList<D>(_ from: From<D>, _ fetchClauses: FetchClause...) -> ListMonitor<D> {
        
        return self.monitorList(from, fetchClauses)
    }
@@ -66,7 +66,7 @@ public extension DataStack {
     - parameter fetchClauses: a series of `FetchClause` instances for fetching the object list. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: a `ListMonitor` instance that monitors changes to the list
     */
-    public func monitorList<T: DynamicObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> ListMonitor<T> {
+    public func monitorList<D>(_ from: From<D>, _ fetchClauses: [FetchClause]) -> ListMonitor<D> {
        
        CoreStore.assert(
            Thread.isMainThread,
@@ -82,12 +82,29 @@ public extension DataStack {
                
                CoreStore.assert(
                    fetchRequest.sortDescriptors?.isEmpty == false,
-                    "An \(cs_typeName(ListMonitor<T>.self)) requires a sort information. Specify from a \(cs_typeName(OrderBy.self)) clause or any custom \(cs_typeName(FetchClause.self)) that provides a sort descriptor."
+                    "An \(cs_typeName(ListMonitor<D>.self)) requires a sort information. Specify from a \(cs_typeName(OrderBy<D>.self)) clause or any custom \(cs_typeName(FetchClause.self)) that provides a sort descriptor."
                )
            }
        )
    }
    
+    /**
+     Creates a `ListMonitor` for a list of `DynamicObject`s that satisfy the specified `FetchChainableBuilderType` built from a chain of clauses.
+     ```
+     let monitor = dataStack.monitorList(
+         From<MyPersonEntity>()
+             .where(\.age > 18)
+             .orderBy(.ascending(\.age))
+     )
+     ```
+     - parameter clauseChain: a `FetchChainableBuilderType` built from a chain of clauses
+     - returns: a `ListMonitor` for a list of `DynamicObject`s that satisfy the specified `FetchChainableBuilderType`
+     */
+    public func monitorList<B: FetchChainableBuilderType>(_ clauseChain: B) -> ListMonitor<B.ObjectType> {
+        
+        return self.monitorList(clauseChain.from, clauseChain.fetchClauses)
+    }
+    
    /**
     Asynchronously creates a `ListMonitor` for a list of `DynamicObject`s that satisfy the specified fetch clauses. Multiple `ListObserver`s may then register themselves to be notified when changes are made to the list. Since `NSFetchedResultsController` greedily locks the persistent store on initial fetch, you may prefer this method instead of the synchronous counterpart to avoid deadlocks while background updates/saves are being executed.
     
@@ -95,7 +112,7 @@ public extension DataStack {
     - parameter from: a `From` clause indicating the entity type
     - parameter fetchClauses: a series of `FetchClause` instances for fetching the object list. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     */
-    public func monitorList<T: DynamicObject>(createAsynchronously: @escaping (ListMonitor<T>) -> Void, _ from: From<T>, _ fetchClauses: FetchClause...) {
+    public func monitorList<D>(createAsynchronously: @escaping (ListMonitor<D>) -> Void, _ from: From<D>, _ fetchClauses: FetchClause...) {
        
        self.monitorList(createAsynchronously: createAsynchronously, from, fetchClauses)
    }
@@ -107,7 +124,7 @@ public extension DataStack {
     - parameter from: a `From` clause indicating the entity type
     - parameter fetchClauses: a series of `FetchClause` instances for fetching the object list. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     */
-    public func monitorList<T: DynamicObject>(createAsynchronously: @escaping (ListMonitor<T>) -> Void, _ from: From<T>, _ fetchClauses: [FetchClause])  {
+    public func monitorList<D>(createAsynchronously: @escaping (ListMonitor<D>) -> Void, _ from: From<D>, _ fetchClauses: [FetchClause])  {
        
        CoreStore.assert(
            Thread.isMainThread,
@@ -123,13 +140,39 @@ public extension DataStack {
                
                CoreStore.assert(
                    fetchRequest.sortDescriptors?.isEmpty == false,
-                    "An \(cs_typeName(ListMonitor<T>.self)) requires a sort information. Specify from a \(cs_typeName(OrderBy.self)) clause or any custom \(cs_typeName(FetchClause.self)) that provides a sort descriptor."
+                    "An \(cs_typeName(ListMonitor<D>.self)) requires a sort information. Specify from a \(cs_typeName(OrderBy<D>.self)) clause or any custom \(cs_typeName(FetchClause.self)) that provides a sort descriptor."
                )
            },
            createAsynchronously: createAsynchronously
        )
    }
    
+    /**
+     Asynchronously creates a `ListMonitor` for a list of `DynamicObject`s that satisfy the specified `FetchChainableBuilderType` built from a chain of clauses. Since `NSFetchedResultsController` greedily locks the persistent store on initial fetch, you may prefer this method instead of the synchronous counterpart to avoid deadlocks while background updates/saves are being executed.
+     
+     ```
+     dataStack.monitorList(
+         { (monitor) in
+             self.monitor = monitor
+         },
+         From<MyPersonEntity>()
+             .where(\.age > 18)
+             .orderBy(.ascending(\.age))
+     )
+     ```
+     - parameter createAsynchronously: the closure that receives the created `ListMonitor` instance
+     - parameter clauseChain: a `FetchChainableBuilderType` built from a chain of clauses
+     - returns: a `ListMonitor` for a list of `DynamicObject`s that satisfy the specified `FetchChainableBuilderType`
+     */
+    public func monitorList<B: FetchChainableBuilderType>(createAsynchronously: @escaping (ListMonitor<B.ObjectType>) -> Void, _ clauseChain: B) {
+        
+        self.monitorList(
+            createAsynchronously: createAsynchronously,
+            clauseChain.from,
+            clauseChain.fetchClauses
+        )
+    }
+    
    /**
     Creates a `ListMonitor` for a sectioned list of `DynamicObject`s that satisfy the specified fetch clauses. Multiple `ListObserver`s may then register themselves to be notified when changes are made to the list.
     
@@ -138,7 +181,7 @@ public extension DataStack {
     - parameter fetchClauses: a series of `FetchClause` instances for fetching the object list. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: a `ListMonitor` instance that monitors changes to the list
     */
-    public func monitorSectionedList<T: DynamicObject>(_ from: From<T>, _ sectionBy: SectionBy, _ fetchClauses: FetchClause...) -> ListMonitor<T> {
+    public func monitorSectionedList<D>(_ from: From<D>, _ sectionBy: SectionBy<D>, _ fetchClauses: FetchClause...) -> ListMonitor<D> {
        
        return self.monitorSectionedList(from, sectionBy, fetchClauses)
    }
@@ -151,7 +194,7 @@ public extension DataStack {
     - parameter fetchClauses: a series of `FetchClause` instances for fetching the object list. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: a `ListMonitor` instance that monitors changes to the list
     */
-    public func monitorSectionedList<T: DynamicObject>(_ from: From<T>, _ sectionBy: SectionBy, _ fetchClauses: [FetchClause]) -> ListMonitor<T> {
+    public func monitorSectionedList<D>(_ from: From<D>, _ sectionBy: SectionBy<D>, _ fetchClauses: [FetchClause]) -> ListMonitor<D> {
        
        CoreStore.assert(
            Thread.isMainThread,
@@ -168,12 +211,34 @@ public extension DataStack {
                
                CoreStore.assert(
                    fetchRequest.sortDescriptors?.isEmpty == false,
-                    "An \(cs_typeName(ListMonitor<T>.self)) requires a sort information. Specify from a \(cs_typeName(OrderBy.self)) clause or any custom \(cs_typeName(FetchClause.self)) that provides a sort descriptor."
+                    "An \(cs_typeName(ListMonitor<D>.self)) requires a sort information. Specify from a \(cs_typeName(OrderBy<D>.self)) clause or any custom \(cs_typeName(FetchClause.self)) that provides a sort descriptor."
                )
            }
        )
    }
    
+    /**
+     Creates a `ListMonitor` for a sectioned list of `DynamicObject`s that satisfy the specified `SectionMonitorBuilderType` built from a chain of clauses.
+     ```
+     let monitor = dataStack.monitorSectionedList(
+         From<MyPersonEntity>()
+             .sectionBy(\.age, { "\($0!) years old" })
+             .where(\.age > 18)
+             .orderBy(.ascending(\.age))
+     )
+     ```
+     - parameter clauseChain: a `SectionMonitorBuilderType` built from a chain of clauses
+     - returns: a `ListMonitor` for a list of `DynamicObject`s that satisfy the specified `SectionMonitorBuilderType`
+     */
+    public func monitorSectionedList<B: SectionMonitorBuilderType>(_ clauseChain: B) -> ListMonitor<B.ObjectType> {
+        
+        return self.monitorSectionedList(
+            clauseChain.from,
+            clauseChain.sectionBy,
+            clauseChain.fetchClauses
+        )
+    }
+    
    /**
     Asynchronously creates a `ListMonitor` for a sectioned list of `DynamicObject`s that satisfy the specified fetch clauses. Multiple `ListObserver`s may then register themselves to be notified when changes are made to the list. Since `NSFetchedResultsController` greedily locks the persistent store on initial fetch, you may prefer this method instead of the synchronous counterpart to avoid deadlocks while background updates/saves are being executed.
     
@@ -182,7 +247,7 @@ public extension DataStack {
     - parameter sectionBy: a `SectionBy` clause indicating the keyPath for the attribute to use when sorting the list into sections.
     - parameter fetchClauses: a series of `FetchClause` instances for fetching the object list. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     */
-    public func monitorSectionedList<T: DynamicObject>(createAsynchronously: @escaping (ListMonitor<T>) -> Void, _ from: From<T>, _ sectionBy: SectionBy, _ fetchClauses: FetchClause...) {
+    public func monitorSectionedList<D>(createAsynchronously: @escaping (ListMonitor<D>) -> Void, _ from: From<D>, _ sectionBy: SectionBy<D>, _ fetchClauses: FetchClause...) {
        
        self.monitorSectionedList(createAsynchronously: createAsynchronously, from, sectionBy, fetchClauses)
    }
@@ -195,7 +260,7 @@ public extension DataStack {
     - parameter sectionBy: a `SectionBy` clause indicating the keyPath for the attribute to use when sorting the list into sections.
     - parameter fetchClauses: a series of `FetchClause` instances for fetching the object list. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     */
-    public func monitorSectionedList<T: DynamicObject>(createAsynchronously: @escaping (ListMonitor<T>) -> Void, _ from: From<T>, _ sectionBy: SectionBy, _ fetchClauses: [FetchClause]) {
+    public func monitorSectionedList<D>(createAsynchronously: @escaping (ListMonitor<D>) -> Void, _ from: From<D>, _ sectionBy: SectionBy<D>, _ fetchClauses: [FetchClause]) {
        
        CoreStore.assert(
            Thread.isMainThread,
@@ -212,10 +277,36 @@ public extension DataStack {
                
                CoreStore.assert(
                    fetchRequest.sortDescriptors?.isEmpty == false,
-                    "An \(cs_typeName(ListMonitor<T>.self)) requires a sort information. Specify from a \(cs_typeName(OrderBy.self)) clause or any custom \(cs_typeName(FetchClause.self)) that provides a sort descriptor."
+                    "An \(cs_typeName(ListMonitor<D>.self)) requires a sort information. Specify from a \(cs_typeName(OrderBy<D>.self)) clause or any custom \(cs_typeName(FetchClause.self)) that provides a sort descriptor."
                )
            },
            createAsynchronously: createAsynchronously
        )
    }
+    
+    /**
+     Asynchronously creates a `ListMonitor` for a sectioned list of `DynamicObject`s that satisfy the specified `SectionMonitorBuilderType` built from a chain of clauses.
+     ```
+     dataStack.monitorSectionedList(
+         { (monitor) in
+             self.monitor = monitor
+         },
+         From<MyPersonEntity>()
+             .sectionBy(\.age, { "\($0!) years old" })
+             .where(\.age > 18)
+             .orderBy(.ascending(\.age))
+     )
+     ```
+     - parameter clauseChain: a `SectionMonitorBuilderType` built from a chain of clauses
+     - returns: a `ListMonitor` for a list of `DynamicObject`s that satisfy the specified `SectionMonitorBuilderType`
+     */
+    public func monitorSectionedList<B: SectionMonitorBuilderType>(createAsynchronously: @escaping (ListMonitor<B.ObjectType>) -> Void, _ clauseChain: B) {
+        
+        self.monitorSectionedList(
+            createAsynchronously: createAsynchronously,
+            clauseChain.from,
+            clauseChain.sectionBy,
+            clauseChain.fetchClauses
+        )
+    }
 }
--- a/Sources/DataStack+Querying.swift
+++ b/Sources/DataStack+Querying.swift
@@ -39,7 +39,7 @@ extension DataStack: FetchableSource, QueryableSource {
     - parameter object: a reference to the object created/fetched outside the `DataStack`
     - returns: the `DynamicObject` instance if the object exists in the `DataStack`, or `nil` if not found.
     */
-    public func fetchExisting<T: DynamicObject>(_ object: T) -> T? {
+    public func fetchExisting<D: DynamicObject>(_ object: D) -> D? {
        
        return self.mainContext.fetchExisting(object)
    }
@@ -50,7 +50,7 @@ extension DataStack: FetchableSource, QueryableSource {
     - parameter objectID: the `NSManagedObjectID` for the object
     - returns: the `DynamicObject` instance if the object exists in the `DataStack`, or `nil` if not found.
     */
-    public func fetchExisting<T: DynamicObject>(_ objectID: NSManagedObjectID) -> T? {
+    public func fetchExisting<D: DynamicObject>(_ objectID: NSManagedObjectID) -> D? {
        
        return self.mainContext.fetchExisting(objectID)
    }
@@ -61,7 +61,7 @@ extension DataStack: FetchableSource, QueryableSource {
     - parameter objects: an array of `DynamicObject`s created/fetched outside the `DataStack`
     - returns: the `DynamicObject` array for objects that exists in the `DataStack`
     */
-    public func fetchExisting<T: DynamicObject, S: Sequence>(_ objects: S) -> [T] where S.Iterator.Element == T {
+    public func fetchExisting<D: DynamicObject, S: Sequence>(_ objects: S) -> [D] where S.Iterator.Element == D {
        
        return self.mainContext.fetchExisting(objects)
    }
@@ -72,7 +72,7 @@ extension DataStack: FetchableSource, QueryableSource {
     - parameter objectIDs: the `NSManagedObjectID` array for the objects
     - returns: the `DynamicObject` array for objects that exists in the `DataStack`
     */
-    public func fetchExisting<T: DynamicObject, S: Sequence>(_ objectIDs: S) -> [T] where S.Iterator.Element == NSManagedObjectID {
+    public func fetchExisting<D: DynamicObject, S: Sequence>(_ objectIDs: S) -> [D] where S.Iterator.Element == NSManagedObjectID {
        
        return self.mainContext.fetchExisting(objectIDs)
    }
@@ -84,7 +84,7 @@ extension DataStack: FetchableSource, QueryableSource {
     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: the first `DynamicObject` instance that satisfies the specified `FetchClause`s
     */
-    public func fetchOne<T: DynamicObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> T? {
+    public func fetchOne<D>(_ from: From<D>, _ fetchClauses: FetchClause...) -> D? {
        
        CoreStore.assert(
            Thread.isMainThread,
@@ -100,7 +100,7 @@ extension DataStack: FetchableSource, QueryableSource {
     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: the first `DynamicObject` instance that satisfies the specified `FetchClause`s
     */
-    public func fetchOne<T: DynamicObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> T? {
+    public func fetchOne<D>(_ from: From<D>, _ fetchClauses: [FetchClause]) -> D? {
        
        CoreStore.assert(
            Thread.isMainThread,
@@ -109,6 +109,27 @@ extension DataStack: FetchableSource, QueryableSource {
        return self.mainContext.fetchOne(from, fetchClauses)
    }
    
+    /**
+     Fetches the first `DynamicObject` instance that satisfies the specified `FetchChainableBuilderType` built from a chain of clauses.
+     ```
+     let youngestTeen = dataStack.fetchOne(
+         From<MyPersonEntity>()
+             .where(\.age > 18)
+             .orderBy(.ascending(\.age))
+     )
+     ```
+     - parameter clauseChain: a `FetchChainableBuilderType` built from a chain of clauses
+     - returns: the first `DynamicObject` instance that satisfies the specified `FetchChainableBuilderType`
+     */
+    public func fetchOne<B: FetchChainableBuilderType>(_ clauseChain: B) -> B.ObjectType? {
+        
+        CoreStore.assert(
+            Thread.isMainThread,
+            "Attempted to fetch from a \(cs_typeName(self)) outside the main thread."
+        )
+        return self.mainContext.fetchOne(clauseChain)
+    }
+    
    /**
     Fetches all `DynamicObject` instances that satisfy the specified `FetchClause`s. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     
@@ -116,7 +137,7 @@ extension DataStack: FetchableSource, QueryableSource {
     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: all `DynamicObject` instances that satisfy the specified `FetchClause`s
     */
-    public func fetchAll<T: DynamicObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> [T]? {
+    public func fetchAll<D>(_ from: From<D>, _ fetchClauses: FetchClause...) -> [D]? {
        
        CoreStore.assert(
            Thread.isMainThread,
@@ -132,7 +153,7 @@ extension DataStack: FetchableSource, QueryableSource {
     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: all `DynamicObject` instances that satisfy the specified `FetchClause`s
     */
-    public func fetchAll<T: DynamicObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> [T]? {
+    public func fetchAll<D>(_ from: From<D>, _ fetchClauses: [FetchClause]) -> [D]? {
        
        CoreStore.assert(
            Thread.isMainThread,
@@ -141,6 +162,27 @@ extension DataStack: FetchableSource, QueryableSource {
        return self.mainContext.fetchAll(from, fetchClauses)
    }
    
+    /**
+     Fetches all `DynamicObject` instances that satisfy the specified `FetchChainableBuilderType` built from a chain of clauses.
+     ```
+     let people = dataStack.fetchAll(
+         From<MyPersonEntity>()
+             .where(\.age > 18)
+             .orderBy(.ascending(\.age))
+     )
+     ```
+     - parameter clauseChain: a `FetchChainableBuilderType` built from a chain of clauses
+     - returns: all `DynamicObject` instances that satisfy the specified `FetchChainableBuilderType`
+     */
+    public func fetchAll<B: FetchChainableBuilderType>(_ clauseChain: B) -> [B.ObjectType]? {
+
+        CoreStore.assert(
+            Thread.isMainThread,
+            "Attempted to fetch from a \(cs_typeName(self)) outside the main thread."
+        )
+        return self.mainContext.fetchAll(clauseChain)
+    }
+    
    /**
     Fetches the number of `DynamicObject`s that satisfy the specified `FetchClause`s. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     
@@ -148,7 +190,7 @@ extension DataStack: FetchableSource, QueryableSource {
     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: the number `DynamicObject`s that satisfy the specified `FetchClause`s
     */
-    public func fetchCount<T: DynamicObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> Int? {
+    public func fetchCount<D>(_ from: From<D>, _ fetchClauses: FetchClause...) -> Int? {
        
        CoreStore.assert(
            Thread.isMainThread,
@@ -164,7 +206,7 @@ extension DataStack: FetchableSource, QueryableSource {
     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: the number `DynamicObject`s that satisfy the specified `FetchClause`s
     */
-    public func fetchCount<T: DynamicObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> Int? {
+    public func fetchCount<D>(_ from: From<D>, _ fetchClauses: [FetchClause]) -> Int? {
        
        CoreStore.assert(
            Thread.isMainThread,
@@ -173,6 +215,27 @@ extension DataStack: FetchableSource, QueryableSource {
        return self.mainContext.fetchCount(from, fetchClauses)
    }
    
+    /**
+     Fetches the number of `DynamicObject`s that satisfy the specified `FetchChainableBuilderType` built from a chain of clauses.
+     ```
+     let numberOfAdults = dataStack.fetchCount(
+         From<MyPersonEntity>()
+             .where(\.age > 18)
+             .orderBy(.ascending(\.age))
+     )
+     ```
+     - parameter clauseChain: a `FetchChainableBuilderType` built from a chain of clauses
+     - returns: the number `DynamicObject`s that satisfy the specified `FetchChainableBuilderType`
+     */
+    public func fetchCount<B: FetchChainableBuilderType>(_ clauseChain: B) -> Int? {
+        
+        CoreStore.assert(
+            Thread.isMainThread,
+            "Attempted to fetch from a \(cs_typeName(self)) outside the main thread."
+        )
+        return self.mainContext.fetchCount(clauseChain)
+    }
+    
    /**
     Fetches the `NSManagedObjectID` for the first `DynamicObject` that satisfies the specified `FetchClause`s. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     
@@ -180,7 +243,7 @@ extension DataStack: FetchableSource, QueryableSource {
     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: the `NSManagedObjectID` for the first `DynamicObject` that satisfies the specified `FetchClause`s
     */
-    public func fetchObjectID<T: DynamicObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> NSManagedObjectID? {
+    public func fetchObjectID<D>(_ from: From<D>, _ fetchClauses: FetchClause...) -> NSManagedObjectID? {
        
        CoreStore.assert(
            Thread.isMainThread,
@@ -196,7 +259,7 @@ extension DataStack: FetchableSource, QueryableSource {
     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: the `NSManagedObjectID` for the first `DynamicObject` that satisfies the specified `FetchClause`s
     */
-    public func fetchObjectID<T: DynamicObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> NSManagedObjectID? {
+    public func fetchObjectID<D>(_ from: From<D>, _ fetchClauses: [FetchClause]) -> NSManagedObjectID? {
        
        CoreStore.assert(
            Thread.isMainThread,
@@ -205,6 +268,27 @@ extension DataStack: FetchableSource, QueryableSource {
        return self.mainContext.fetchObjectID(from, fetchClauses)
    }
    
+    /**
+     Fetches the `NSManagedObjectID` for the first `DynamicObject` that satisfies the specified `FetchChainableBuilderType` built from a chain of clauses.
+     ```
+     let youngestTeenID = dataStack.fetchObjectID(
+         From<MyPersonEntity>()
+             .where(\.age > 18)
+             .orderBy(.ascending(\.age))
+     )
+     ```
+     - parameter clauseChain: a `FetchChainableBuilderType` built from a chain of clauses
+     - returns: the `NSManagedObjectID` for the first `DynamicObject` that satisfies the specified `FetchChainableBuilderType`
+     */
+    public func fetchObjectID<B: FetchChainableBuilderType>(_ clauseChain: B) -> NSManagedObjectID? {
+        
+        CoreStore.assert(
+            Thread.isMainThread,
+            "Attempted to fetch from a \(cs_typeName(self)) outside the main thread."
+        )
+        return self.mainContext.fetchObjectID(clauseChain)
+    }
+    
    /**
     Fetches the `NSManagedObjectID` for all `DynamicObject`s that satisfy the specified `FetchClause`s. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     
@@ -212,7 +296,7 @@ extension DataStack: FetchableSource, QueryableSource {
     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: the `NSManagedObjectID` for all `DynamicObject`s that satisfy the specified `FetchClause`s
     */
-    public func fetchObjectIDs<T: DynamicObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> [NSManagedObjectID]? {
+    public func fetchObjectIDs<D>(_ from: From<D>, _ fetchClauses: FetchClause...) -> [NSManagedObjectID]? {
        
        CoreStore.assert(
            Thread.isMainThread,
@@ -228,7 +312,7 @@ extension DataStack: FetchableSource, QueryableSource {
     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: the `NSManagedObjectID` for all `DynamicObject`s that satisfy the specified `FetchClause`s
     */
-    public func fetchObjectIDs<T: DynamicObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> [NSManagedObjectID]? {
+    public func fetchObjectIDs<D>(_ from: From<D>, _ fetchClauses: [FetchClause]) -> [NSManagedObjectID]? {
        
        CoreStore.assert(
            Thread.isMainThread,
@@ -237,6 +321,27 @@ extension DataStack: FetchableSource, QueryableSource {
        return self.mainContext.fetchObjectIDs(from, fetchClauses)
    }
    
+    /**
+     Fetches the `NSManagedObjectID` for all `DynamicObject`s that satisfy the specified `FetchChainableBuilderType` built from a chain of clauses.
+     ```
+     let idsOfAdults = dataStack.fetchObjectIDs(
+         From<MyPersonEntity>()
+             .where(\.age > 18)
+             .orderBy(.ascending(\.age))
+     )
+     ```
+     - parameter clauseChain: a `FetchChainableBuilderType` built from a chain of clauses
+     - returns: the `NSManagedObjectID` for all `DynamicObject`s that satisfy the specified `FetchChainableBuilderType`
+     */
+    public func fetchObjectIDs<B: FetchChainableBuilderType>(_ clauseChain: B) -> [NSManagedObjectID]? {
+        
+        CoreStore.assert(
+            Thread.isMainThread,
+            "Attempted to fetch from a \(cs_typeName(self)) outside the main thread."
+        )
+        return self.mainContext.fetchObjectIDs(clauseChain)
+    }
+    
    
    // MARK: QueryableSource
    
@@ -250,7 +355,7 @@ extension DataStack: FetchableSource, QueryableSource {
     - parameter queryClauses: a series of `QueryClause` instances for the query request. Accepts `Where`, `OrderBy`, `GroupBy`, and `Tweak` clauses.
     - returns: the result of the the query. The type of the return value is specified by the generic type of the `Select<U>` parameter.
     */
-    public func queryValue<T: DynamicObject, U: QueryableAttributeType>(_ from: From<T>, _ selectClause: Select<U>, _ queryClauses: QueryClause...) -> U? {
+    public func queryValue<D, U: QueryableAttributeType>(_ from: From<D>, _ selectClause: Select<D, U>, _ queryClauses: QueryClause...) -> U? {
        
        CoreStore.assert(
            Thread.isMainThread,
@@ -269,7 +374,7 @@ extension DataStack: FetchableSource, QueryableSource {
     - parameter queryClauses: a series of `QueryClause` instances for the query request. Accepts `Where`, `OrderBy`, `GroupBy`, and `Tweak` clauses.
     - returns: the result of the the query. The type of the return value is specified by the generic type of the `Select<U>` parameter.
     */
-    public func queryValue<T: DynamicObject, U: QueryableAttributeType>(_ from: From<T>, _ selectClause: Select<U>, _ queryClauses: [QueryClause]) -> U? {
+    public func queryValue<D, U: QueryableAttributeType>(_ from: From<D>, _ selectClause: Select<D, U>, _ queryClauses: [QueryClause]) -> U? {
        
        CoreStore.assert(
            Thread.isMainThread,
@@ -278,6 +383,29 @@ extension DataStack: FetchableSource, QueryableSource {
        return self.mainContext.queryValue(from, selectClause, queryClauses)
    }
    
+    /**
+     Queries a property value or aggregate as specified by the `QueryChainableBuilderType` built from a chain of clauses.
+     
+     A "query" differs from a "fetch" in that it only retrieves values already stored in the persistent store. As such, values from unsaved transactions or contexts will not be incorporated in the query result.
+     ```
+     let averageAdultAge = dataStack.queryValue(
+         From<MyPersonEntity>()
+             .select(Int.self, .average(\.age))
+             .where(\.age > 18)
+     )
+     ```
+     - parameter clauseChain: a `QueryChainableBuilderType` indicating the property/aggregate to fetch and the series of queries for the request.
+     - returns: the result of the the query as specified by the `QueryChainableBuilderType`
+     */
+    public func queryValue<B: QueryChainableBuilderType>(_ clauseChain: B) -> B.ResultType? where B.ResultType: QueryableAttributeType {
+        
+        CoreStore.assert(
+            Thread.isMainThread,
+            "Attempted to query from a \(cs_typeName(self)) outside the main thread."
+        )
+        return self.mainContext.queryValue(clauseChain.from, clauseChain.select, clauseChain.queryClauses)
+    }
+    
    /**
     Queries a dictionary of attribute values as specified by the `QueryClause`s. Requires at least a `Select` clause, and optional `Where`, `OrderBy`, `GroupBy`, and `Tweak` clauses.
     
@@ -288,7 +416,7 @@ extension DataStack: FetchableSource, QueryableSource {
     - parameter queryClauses: a series of `QueryClause` instances for the query request. Accepts `Where`, `OrderBy`, `GroupBy`, and `Tweak` clauses.
     - returns: the result of the the query. The type of the return value is specified by the generic type of the `Select<U>` parameter.
     */
-    public func queryAttributes<T: DynamicObject>(_ from: From<T>, _ selectClause: Select<NSDictionary>, _ queryClauses: QueryClause...) -> [[String: Any]]? {
+    public func queryAttributes<D>(_ from: From<D>, _ selectClause: Select<D, NSDictionary>, _ queryClauses: QueryClause...) -> [[String: Any]]? {
        
        CoreStore.assert(
            Thread.isMainThread,
@@ -307,7 +435,7 @@ extension DataStack: FetchableSource, QueryableSource {
     - parameter queryClauses: a series of `QueryClause` instances for the query request. Accepts `Where`, `OrderBy`, `GroupBy`, and `Tweak` clauses.
     - returns: the result of the the query. The type of the return value is specified by the generic type of the `Select<U>` parameter.
     */
-    public func queryAttributes<T: DynamicObject>(_ from: From<T>, _ selectClause: Select<NSDictionary>, _ queryClauses: [QueryClause]) -> [[String: Any]]? {
+    public func queryAttributes<D>(_ from: From<D>, _ selectClause: Select<D, NSDictionary>, _ queryClauses: [QueryClause]) -> [[String: Any]]? {
        
        CoreStore.assert(
            Thread.isMainThread,
@@ -316,6 +444,38 @@ extension DataStack: FetchableSource, QueryableSource {
        return self.mainContext.queryAttributes(from, selectClause, queryClauses)
    }
    
+    /**
+     Queries a dictionary of attribute values or  as specified by the `QueryChainableBuilderType` built from a chain of clauses.
+     
+     A "query" differs from a "fetch" in that it only retrieves values already stored in the persistent store. As such, values from unsaved transactions or contexts will not be incorporated in the query result.
+     ```
+     let results = dataStack.queryAttributes(
+         From<MyPersonEntity>()
+             .select(
+                 NSDictionary.self,
+                 .attribute(\.age, as: "age"),
+                 .count(\.age, as: "numberOfPeople")
+             )
+             .groupBy(\.age)
+     )
+     for dictionary in results! {
+         let age = dictionary["age"] as! Int
+         let count = dictionary["numberOfPeople"] as! Int
+         print("There are \(count) people who are \(age) years old."
+     }
+     ```
+     - parameter clauseChain: a `QueryChainableBuilderType` indicating the properties to fetch and the series of queries for the request.
+     - returns: the result of the the query as specified by the `QueryChainableBuilderType`
+     */
+    public func queryAttributes<B: QueryChainableBuilderType>(_ clauseChain: B) -> [[String: Any]]? where B.ResultType == NSDictionary {
+        
+        CoreStore.assert(
+            Thread.isMainThread,
+            "Attempted to query from a \(cs_typeName(self)) outside the main thread."
+        )
+        return self.mainContext.queryAttributes(clauseChain.from, clauseChain.select, clauseChain.queryClauses)
+    }
+    
    
    // MARK: FetchableSource, QueryableSource
    
--- a/Sources/DataStack+Transaction.swift
+++ b/Sources/DataStack+Transaction.swift
@@ -61,10 +61,6 @@ public extension DataStack {
        )
        transaction.transactionQueue.cs_async {
            
-            defer {
-                
-                withExtendedLifetime((self, transaction), {})
-            }
            let userInfo: T
            do {
                
@@ -82,6 +78,10 @@ public extension DataStack {
            }
            transaction.autoCommit { (_, error) in
                
+                defer {
+                    
+                    withExtendedLifetime((self, transaction), {})
+                }
                if let error = error {
                    
                    failure(error)
@@ -95,7 +95,7 @@ public extension DataStack {
    }
    
    /**
-     Performs a transaction synchronously where `NSManagedObject` or `CoreStoreObject` creates, updates, and deletes can be made. The changes are commited automatically after the `task` closure returns. On success, the value returned from closure will be the return value of `perform(synchronous:)`. Any errors thrown from inside the `task` will be rethrown from `perform(synchronous:)`. To cancel/rollback changes, call `try transaction.cancel()`, which throws a `CoreStoreError.userCancelled`.
+     Performs a transaction synchronously where `NSManagedObject` or `CoreStoreObject` creates, updates, and deletes can be made. The changes are commited automatically after the `task` closure returns. On success, the value returned from closure will be the return value of `perform(synchronous:)`. Any errors thrown from inside the `task` will be thrown from `perform(synchronous:)`. To cancel/rollback changes, call `try transaction.cancel()`, which throws a `CoreStoreError.userCancelled`.
     
     - parameter task: the synchronous non-escaping closure where creates, updates, and deletes can be made to the transaction. Transaction blocks are executed serially in a background queue, and all changes are made from a concurrent `NSManagedObjectContext`.
     - parameter waitForAllObservers: When `true`, 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. When `false`, 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. Defaults to `true`.
@@ -211,9 +211,9 @@ public extension DataStack {
        }
        switch transaction.result {
            
-        case nil:                       return nil
-        case (let hasChanges, nil)?:    return SaveResult(hasChanges: hasChanges)
-        case (_, let error?)?:          return SaveResult(error)
+        case .none:                         return nil
+        case .some(let hasChanges, nil):    return SaveResult(hasChanges: hasChanges)
+        case .some(_, let error?):          return SaveResult(error)
        }
    }
 }
--- a/Sources/DataStack.swift
+++ b/Sources/DataStack.swift
@@ -34,6 +34,11 @@ import CoreData
 */
 public final class DataStack: Equatable {
    
+    /**
+     The resolved application name, used by the `DataStack` as the default Xcode model name (.xcdatamodel filename) if not explicitly provided.
+     */
+    public static let applicationName = (Bundle.main.object(forInfoDictionaryKey: "CFBundleName") as? String) ?? "CoreData"
+    
    /**
     Convenience initializer for `DataStack` that creates a `SchemaHistory` from the model with the specified `modelName` in the specified `bundle`.
     
@@ -105,9 +110,6 @@ public final class DataStack: Equatable {
     */
    public required init(schemaHistory: SchemaHistory) {

-        // TODO: test before release (rolled back)
-//        _ = DataStack.isGloballyInitialized
-        
        self.coordinator = NSPersistentStoreCoordinator(managedObjectModel: schemaHistory.rawModel)
        self.rootSavingContext = NSManagedObjectContext.rootSavingContextForCoordinator(self.coordinator)
        self.mainContext = NSManagedObjectContext.mainContextForRootContext(self.rootSavingContext)
@@ -477,8 +479,6 @@ public final class DataStack: Equatable {
    
    internal static var defaultConfigurationName = "PF_DEFAULT_CONFIGURATION_NAME"
    
-    internal static let applicationName = (Bundle.main.object(forInfoDictionaryKey: "CFBundleName") as? String) ?? "CoreData"
-    
    internal let coordinator: NSPersistentStoreCoordinator
    internal let rootSavingContext: NSManagedObjectContext
    internal let mainContext: NSManagedObjectContext
@@ -585,13 +585,6 @@ public final class DataStack: Equatable {
    
    // MARK: Private
    
-    // TODO: test before release (rolled back)
-//    private static let isGloballyInitialized: Bool = {
-//        
-//        NSManagedObject.cs_swizzleMethodsForLogging()
-//        return true
-//    }()
-    
    private var persistentStoresByFinalConfiguration = [String: NSPersistentStore]()
    private var finalConfigurationsByEntityIdentifier = [EntityIdentifier: Set<String>]()
    
--- a/Sources/DefaultLogger.swift
+++ b/Sources/DefaultLogger.swift
@@ -33,12 +33,6 @@ import Foundation
 */
 public final class DefaultLogger: CoreStoreLogger {
    
-    /**
-     When `true`, all `NSManagedObject` attribute and relationship access will raise an assertion when executed on the wrong transaction/datastack queue. Defaults to `false`.
-     */
-    // TODO: test before release (rolled back)
-//    public var enableObjectConcurrencyDebugging: Bool = false
-    
    /**
     Creates a `DefaultLogger`.
     */
--- a/Sources/DynamicKeyPath.swift
+++ b/Sources/DynamicKeyPath.swift
@@ -0,0 +1,193 @@
+//
+//  DynamicKeyPath.swift
+//  CoreStore
+//
+//  Copyright © 2017 John Rommel Estropia
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all
+//  copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+//  SOFTWARE.
+//
+
+import Foundation
+
+
+// MARK: - DynamicKeyPath
+
+/**
+ Used only for utility methods.
+ */
+public protocol DynamicKeyPath {
+    
+    /**
+     The DynamicObject type
+     */
+    associatedtype ObjectType
+    
+    /**
+     The Value type
+     */
+    associatedtype ValueType
+    
+    /**
+     The keyPath string
+     */
+    var cs_keyPathString: String { get }
+}
+
+
+// MARK: - KeyPathString
+
+public extension KeyPathString {
+    
+    /**
+     Extracts the keyPath string from the property.
+     ```
+     let keyPath = String(keyPath: \Person.nickname)
+     ```
+     */
+    public init<O: NSManagedObject, V>(keyPath: KeyPath<O, V>) {
+        
+        self = keyPath.cs_keyPathString
+    }
+    
+    /**
+     Extracts the keyPath string from the property.
+     ```
+     let keyPath = String(keyPath: \Person.nickname)
+     ```
+     */
+    public init<O: CoreStoreObject, K: DynamicKeyPath>(keyPath: KeyPath<O, K>) {
+        
+        self = O.meta[keyPath: keyPath].cs_keyPathString
+    }
+}
+
+
+// MARK: - KeyPath: DynamicKeyPath
+
+// TODO: SE-0143 is not implemented: https://github.com/apple/swift-evolution/blob/master/proposals/0143-conditional-conformances.md
+//extension KeyPath: DynamicKeyPath where Root: NSManagedObject, Value: ImportableAttributeType {
+extension KeyPath: DynamicKeyPath {
+
+    public typealias ObjectType = Root
+    public typealias ValueType = Value
+    
+    public var cs_keyPathString: String {
+        
+        return self._kvcKeyPathString!
+    }
+}
+
+
+// MARK: - ValueContainer.Required: DynamicKeyPath
+
+extension ValueContainer.Required: DynamicKeyPath {
+    
+    public typealias ObjectType = O
+    public typealias ValueType = V
+    
+    public var cs_keyPathString: String {
+        
+        return self.keyPath
+    }
+}
+
+
+// MARK: - ValueContainer.Optional: DynamicKeyPath
+
+extension ValueContainer.Optional: DynamicKeyPath {
+    
+    public typealias ObjectType = O
+    public typealias ValueType = V
+    
+    public var cs_keyPathString: String {
+        
+        return self.keyPath
+    }
+}
+
+
+// MARK: - TransformableContainer.Required: DynamicKeyPath
+
+extension TransformableContainer.Required: DynamicKeyPath {
+    
+    public typealias ObjectType = O
+    public typealias ValueType = V
+    
+    public var cs_keyPathString: String {
+        
+        return self.keyPath
+    }
+}
+
+
+// MARK: - TransformableContainer.Optional: DynamicKeyPath
+
+extension TransformableContainer.Optional: DynamicKeyPath {
+    
+    public typealias ObjectType = O
+    public typealias ValueType = V
+    
+    public var cs_keyPathString: String {
+        
+        return self.keyPath
+    }
+}
+
+
+// MARK: - RelationshipContainer.ToOne: DynamicKeyPath
+
+extension RelationshipContainer.ToOne: DynamicKeyPath {
+    
+    public typealias ObjectType = O
+    public typealias ValueType = D
+    
+    public var cs_keyPathString: String {
+        
+        return self.keyPath
+    }
+}
+
+
+// MARK: - RelationshipContainer.ToManyOrdered: DynamicKeyPath
+
+extension RelationshipContainer.ToManyOrdered: DynamicKeyPath {
+    
+    public typealias ObjectType = O
+    public typealias ValueType = D
+    
+    public var cs_keyPathString: String {
+        
+        return self.keyPath
+    }
+}
+
+
+// MARK: - RelationshipContainer.ToManyUnordered: DynamicKeyPath
+
+extension RelationshipContainer.ToManyUnordered: DynamicKeyPath {
+    
+    public typealias ObjectType = O
+    public typealias ValueType = D
+    
+    public var cs_keyPathString: String {
+        
+        return self.keyPath
+    }
+}
+
--- a/Sources/DynamicObject.swift
+++ b/Sources/DynamicObject.swift
@@ -78,12 +78,7 @@ extension NSManagedObject: DynamicObject {
    
    public class func cs_fromRaw(object: NSManagedObject) -> Self {
        
-        @inline(__always)
-        func forceCast<T: NSManagedObject>(_ value: Any) -> T {
-            
-            return value as! T
-        }
-        return forceCast(object)
+        return unsafeDowncast(object, to: self)
    }
    
    public static func cs_matches(object: NSManagedObject) -> Bool {
@@ -124,14 +119,13 @@ extension CoreStoreObject {
        
        if let coreStoreObject = object.coreStoreObject {
            
-            @inline(__always)
-            func forceCast<T: CoreStoreObject>(_ value: CoreStoreObject) -> T {
-                
-                return value as! T
-            }
-            return forceCast(coreStoreObject)
+            return unsafeDowncast(coreStoreObject, to: self)
        }
-        let coreStoreObject = self.init(rawObject: object)
+        func forceTypeCast<T: CoreStoreObject>(_ type: AnyClass, to: T.Type) -> T.Type {
+            
+            return type as! T.Type
+        }
+        let coreStoreObject = forceTypeCast(object.entity.dynamicObjectType!, to: self).init(rawObject: object)
        object.coreStoreObject = coreStoreObject
        return coreStoreObject
    }
@@ -155,14 +149,3 @@ extension CoreStoreObject {
        return self.rawObject!
    }
 }
-
-
-// MARK: - Internal
-
-internal extension DynamicObject where Self: CoreStoreObject {
-    
-    internal static var meta: Self {
-        
-        return self.init(asMeta: ())
-    }
-}
--- a/Sources/DynamicSchema+Convenience.swift
+++ b/Sources/DynamicSchema+Convenience.swift
@@ -96,71 +96,62 @@ public extension DynamicSchema {
                        
                    case .integer16AttributeType:
                        valueType = Int16.self
-                        if let defaultValue = (attribute.defaultValue as! Int16.ImportableNativeType?).flatMap(Int16.cs_fromImportableNativeType),
-                            defaultValue != Int16.cs_emptyValue() {
+                        if let defaultValue = (attribute.defaultValue as! Int16.QueryableNativeType?).flatMap(Int16.cs_fromQueryableNativeType) {
                            
-                            defaultString = ", default: \(defaultValue)"
+                            defaultString = ", initial: \(defaultValue)"
                        }
                    case .integer32AttributeType:
                        valueType = Int32.self
-                        if let defaultValue = (attribute.defaultValue as! Int32.ImportableNativeType?).flatMap(Int32.cs_fromImportableNativeType),
-                            defaultValue != Int32.cs_emptyValue() {
+                        if let defaultValue = (attribute.defaultValue as! Int32.QueryableNativeType?).flatMap(Int32.cs_fromQueryableNativeType) {
                            
-                            defaultString = ", default: \(defaultValue)"
+                            defaultString = ", initial: \(defaultValue)"
                        }
                    case .integer64AttributeType:
                        valueType = Int64.self
-                        if let defaultValue = (attribute.defaultValue as! Int64.ImportableNativeType?).flatMap(Int64.cs_fromImportableNativeType),
-                            defaultValue != Int64.cs_emptyValue() {
+                        if let defaultValue = (attribute.defaultValue as! Int64.QueryableNativeType?).flatMap(Int64.cs_fromQueryableNativeType) {
                            
-                            defaultString = ", default: \(defaultValue)"
+                            defaultString = ", initial: \(defaultValue)"
                        }
                    case .decimalAttributeType:
                        valueType = NSDecimalNumber.self
-                        if let defaultValue = (attribute.defaultValue as! NSDecimalNumber.ImportableNativeType?).flatMap(NSDecimalNumber.cs_fromImportableNativeType),
-                            defaultValue != NSDecimalNumber.cs_emptyValue() {
+                        if let defaultValue = (attribute.defaultValue as! NSDecimalNumber?) {
                            
-                            defaultString = ", default: NSDecimalNumber(string: \"\(defaultValue.description(withLocale: nil))\")"
+                            defaultString = ", initial: NSDecimalNumber(string: \"\(defaultValue.description(withLocale: nil))\")"
                        }
                    case .doubleAttributeType:
                        valueType = Double.self
-                        if let defaultValue = (attribute.defaultValue as! Double.ImportableNativeType?).flatMap(Double.cs_fromImportableNativeType),
-                            defaultValue != Double.cs_emptyValue() {
+                        if let defaultValue = (attribute.defaultValue as! Double.QueryableNativeType?).flatMap(Double.cs_fromQueryableNativeType) {
                            
-                            defaultString = ", default: \(defaultValue)"
+                            defaultString = ", initial: \(defaultValue)"
                        }
                    case .floatAttributeType:
                        valueType = Float.self
-                        if let defaultValue = (attribute.defaultValue as! Float.ImportableNativeType?).flatMap(Float.cs_fromImportableNativeType),
-                            defaultValue != Float.cs_emptyValue() {
+                        if let defaultValue = (attribute.defaultValue as! Float.QueryableNativeType?).flatMap(Float.cs_fromQueryableNativeType) {
                            
-                            defaultString = ", default: \(defaultValue)"
+                            defaultString = ", initial: \(defaultValue)"
                        }
                    case .stringAttributeType:
                        valueType = String.self
-                        if let defaultValue = (attribute.defaultValue as! String.ImportableNativeType?).flatMap(String.cs_fromImportableNativeType),
-                            defaultValue != String.cs_emptyValue() {
+                        if let defaultValue = (attribute.defaultValue as! String.QueryableNativeType?).flatMap(String.cs_fromQueryableNativeType) {
                            
                            // TODO: escape strings
-                            defaultString = ", default: \"\(defaultValue)\""
+                            defaultString = ", initial: \"\(defaultValue)\""
                        }
                    case .booleanAttributeType:
                        valueType = Bool.self
-                        if let defaultValue = (attribute.defaultValue as! Bool.ImportableNativeType?).flatMap(Bool.cs_fromImportableNativeType),
-                            defaultValue != Bool.cs_emptyValue() {
+                        if let defaultValue = (attribute.defaultValue as! Bool.QueryableNativeType?).flatMap(Bool.cs_fromQueryableNativeType) {
                            
-                            defaultString = ", default: \(defaultValue ? "true" : "false")"
+                            defaultString = ", initial: \(defaultValue ? "true" : "false")"
                        }
                    case .dateAttributeType:
                        valueType = Date.self
-                        if let defaultValue = (attribute.defaultValue as! Date.ImportableNativeType?).flatMap(Date.cs_fromImportableNativeType) {
+                        if let defaultValue = (attribute.defaultValue as! Date.QueryableNativeType?).flatMap(Date.cs_fromQueryableNativeType) {
                            
-                            defaultString = ", default: Date(timeIntervalSinceReferenceDate: \(defaultValue.timeIntervalSinceReferenceDate))"
+                            defaultString = ", initial: Date(timeIntervalSinceReferenceDate: \(defaultValue.timeIntervalSinceReferenceDate))"
                        }
                    case .binaryDataAttributeType:
                        valueType = Data.self
-                        if let defaultValue = (attribute.defaultValue as! Data.ImportableNativeType?).flatMap(Data.cs_fromImportableNativeType),
-                            defaultValue != Data.cs_emptyValue() {
+                        if let defaultValue = (attribute.defaultValue as! Data.QueryableNativeType?).flatMap(Data.cs_fromQueryableNativeType) {
                            
                            let count = defaultValue.count
                            let bytes = defaultValue.withUnsafeBytes { (pointer: UnsafePointer<UInt8>) in
@@ -168,7 +159,7 @@ public extension DynamicSchema {
                                return (0 ..< (count / MemoryLayout<UInt8>.size))
                                    .map({ "\("0x\(String(pointer[$0], radix: 16, uppercase: false))")" })
                            }
-                            defaultString = ", default: Data(bytes: [\(bytes.joined(separator: ", "))])"
+                            defaultString = ", initial: Data(bytes: [\(bytes.joined(separator: ", "))])"
                        }
                    case .transformableAttributeType:
                        if let attributeValueClassName = attribute.attributeValueClassName {
@@ -181,11 +172,11 @@ public extension DynamicSchema {
                        }
                        if let defaultValue = attribute.defaultValue {
                            
-                            defaultString = ", default: /* \"\(defaultValue)\" */"
+                            defaultString = ", initial: /* \"\(defaultValue)\" */"
                        }
                        else if !attribute.isOptional {
                            
-                            defaultString = ", default: /* required */"
+                            defaultString = ", initial: /* required */"
                        }
                    default:
                        fatalError("Unsupported attribute type: \(attribute.attributeType.rawValue)")
--- a/Sources/Entity.swift
+++ b/Sources/Entity.swift
@@ -34,13 +34,13 @@ import ObjectiveC
 The `Entity<O>` contains `NSEntityDescription` metadata for `CoreStoreObject` subclasses. Pass the `Entity` instances to `CoreStoreSchema` initializer.
 ```
 class Animal: CoreStoreObject {
-     let species = Value.Required<String>("species")
+     let species = Value.Required<String>("species", initial: "")
     let nickname = Value.Optional<String>("nickname")
     let master = Relationship.ToOne<Person>("master")
 }
 
 class Person: CoreStoreObject {
-     let name = Value.Required<String>("name")
+     let name = Value.Required<String>("name", initial: "")
     let pet = Relationship.ToOne<Animal>("pet", inverse: { $0.master })
 }
 
--- a/Sources/FetchChainBuilder.swift
+++ b/Sources/FetchChainBuilder.swift
@@ -0,0 +1,74 @@
+//
+//  FetchChainBuilder.swift
+//  CoreStore
+//
+//  Copyright © 2017 John Rommel Estropia
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all
+//  copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+//  SOFTWARE.
+//
+
+import Foundation
+import CoreData
+
+
+// MARK: - FetchChainBuilder
+
+/**
+ The fetch builder type used for fetches. A `FetchChainBuilder` is created from a `From` clause.
+ ```
+ let people = source.fetchAll(
+     From<MyPersonEntity>()
+         .where(\.age > 18)
+         .orderBy(.ascending(\.age))
+ )
+ ```
+ */
+public struct FetchChainBuilder<D: DynamicObject>: FetchChainableBuilderType {
+    
+    // MARK: FetchChainableBuilderType
+    
+    public typealias ObjectType = D
+    
+    public var from: From<D>
+    public var fetchClauses: [FetchClause] = []
+}
+
+
+// MARK: - FetchChainableBuilderType
+
+/**
+ Utility protocol for `FetchChainBuilder`. Used in fetch methods that support chained fetch builders.
+ */
+public protocol FetchChainableBuilderType {
+    
+    /**
+     The `DynamicObject` type for the fetch
+     */
+    associatedtype ObjectType: DynamicObject
+    
+    /**
+     The `From` clause specifies the source entity and source persistent store for the fetch
+     */
+    var from: From<ObjectType> { get set }
+    
+    /**
+     The `FetchClause`s to be used for the fetch
+     */
+    var fetchClauses: [FetchClause] { get set }
+}
--- a/Sources/FetchableSource.swift
+++ b/Sources/FetchableSource.swift
@@ -40,7 +40,7 @@ public protocol FetchableSource: class {
     - parameter object: a reference to the object created/fetched outside the `FetchableSource`'s context
     - returns: the `DynamicObject` instance if the object exists in the `FetchableSource`'s context, or `nil` if not found.
     */
-    func fetchExisting<T: DynamicObject>(_ object: T) -> T?
+    func fetchExisting<D: DynamicObject>(_ object: D) -> D?
    
    /**
     Fetches the `DynamicObject` instance in the `FetchableSource`'s context from an `NSManagedObjectID`.
@@ -48,7 +48,7 @@ public protocol FetchableSource: class {
     - parameter objectID: the `NSManagedObjectID` for the object
     - returns: the `DynamicObject` instance if the object exists in the `FetchableSource`, or `nil` if not found.
     */
-    func fetchExisting<T: DynamicObject>(_ objectID: NSManagedObjectID) -> T?
+    func fetchExisting<D: DynamicObject>(_ objectID: NSManagedObjectID) -> D?
    
    /**
     Fetches the `DynamicObject` instances in the `FetchableSource`'s context from references created from another managed object context.
@@ -56,7 +56,7 @@ public protocol FetchableSource: class {
     - parameter objects: an array of `DynamicObject`s created/fetched outside the `FetchableSource`'s context
     - returns: the `DynamicObject` array for objects that exists in the `FetchableSource`
     */
-    func fetchExisting<T: DynamicObject, S: Sequence>(_ objects: S) -> [T] where S.Iterator.Element == T
+    func fetchExisting<D: DynamicObject, S: Sequence>(_ objects: S) -> [D] where S.Iterator.Element == D

    /**
     Fetches the `DynamicObject` instances in the `FetchableSource`'s context from a list of `NSManagedObjectID`.
@@ -64,7 +64,7 @@ public protocol FetchableSource: class {
     - parameter objectIDs: the `NSManagedObjectID` array for the objects
     - returns: the `DynamicObject` array for objects that exists in the `FetchableSource`'s context
     */
-    func fetchExisting<T: DynamicObject, S: Sequence>(_ objectIDs: S) -> [T] where S.Iterator.Element == NSManagedObjectID
+    func fetchExisting<D: DynamicObject, S: Sequence>(_ objectIDs: S) -> [D] where S.Iterator.Element == NSManagedObjectID

    /**
     Fetches the first `DynamicObject` instance that satisfies the specified `FetchClause`s. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
@@ -73,7 +73,7 @@ public protocol FetchableSource: class {
     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: the first `DynamicObject` instance that satisfies the specified `FetchClause`s
     */
-    func fetchOne<T: DynamicObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> T?
+    func fetchOne<D>(_ from: From<D>, _ fetchClauses: FetchClause...) -> D?

    /**
     Fetches the first `DynamicObject` instance that satisfies the specified `FetchClause`s. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
@@ -82,7 +82,21 @@ public protocol FetchableSource: class {
     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: the first `DynamicObject` instance that satisfies the specified `FetchClause`s
     */
-    func fetchOne<T: DynamicObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> T?
+    func fetchOne<D>(_ from: From<D>, _ fetchClauses: [FetchClause]) -> D?
+    
+    /**
+     Fetches the first `DynamicObject` instance that satisfies the specified `FetchChainableBuilderType` built from a chain of clauses.
+     ```
+     let youngestTeen = source.fetchOne(
+         From<MyPersonEntity>()
+             .where(\.age > 18)
+             .orderBy(.ascending(\.age))
+     )
+     ```
+     - parameter clauseChain: a `FetchChainableBuilderType` built from a chain of clauses
+     - returns: the first `DynamicObject` instance that satisfies the specified `FetchChainableBuilderType`
+     */
+    func fetchOne<B: FetchChainableBuilderType>(_ clauseChain: B) -> B.ObjectType?

    /**
     Fetches all `DynamicObject` instances that satisfy the specified `FetchClause`s. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
@@ -91,7 +105,7 @@ public protocol FetchableSource: class {
     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: all `DynamicObject` instances that satisfy the specified `FetchClause`s
     */
-    func fetchAll<T: DynamicObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> [T]?
+    func fetchAll<D>(_ from: From<D>, _ fetchClauses: FetchClause...) -> [D]?

    /**
     Fetches all `DynamicObject` instances that satisfy the specified `FetchClause`s. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
@@ -100,7 +114,21 @@ public protocol FetchableSource: class {
     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: all `DynamicObject` instances that satisfy the specified `FetchClause`s
     */
-    func fetchAll<T: DynamicObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> [T]?
+    func fetchAll<D>(_ from: From<D>, _ fetchClauses: [FetchClause]) -> [D]?
+    
+    /**
+     Fetches all `DynamicObject` instances that satisfy the specified `FetchChainableBuilderType` built from a chain of clauses.
+     ```
+     let people = source.fetchAll(
+         From<MyPersonEntity>()
+             .where(\.age > 18)
+             .orderBy(.ascending(\.age))
+     )
+     ```
+     - parameter clauseChain: a `FetchChainableBuilderType` built from a chain of clauses
+     - returns: all `DynamicObject` instances that satisfy the specified `FetchChainableBuilderType`
+     */
+    func fetchAll<B: FetchChainableBuilderType>(_ clauseChain: B) -> [B.ObjectType]?

    /**
     Fetches the number of `DynamicObject`s that satisfy the specified `FetchClause`s. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
@@ -109,7 +137,7 @@ public protocol FetchableSource: class {
     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: the number `DynamicObject`s that satisfy the specified `FetchClause`s
     */
-    func fetchCount<T: DynamicObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> Int?
+    func fetchCount<D>(_ from: From<D>, _ fetchClauses: FetchClause...) -> Int?

    /**
     Fetches the number of `DynamicObject`s that satisfy the specified `FetchClause`s. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
@@ -118,7 +146,21 @@ public protocol FetchableSource: class {
     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: the number `DynamicObject`s that satisfy the specified `FetchClause`s
     */
-    func fetchCount<T: DynamicObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> Int?
+    func fetchCount<D>(_ from: From<D>, _ fetchClauses: [FetchClause]) -> Int?
+    
+    /**
+     Fetches the number of `DynamicObject`s that satisfy the specified `FetchChainableBuilderType` built from a chain of clauses.
+     ```
+     let numberOfAdults = source.fetchCount(
+         From<MyPersonEntity>()
+             .where(\.age > 18)
+             .orderBy(.ascending(\.age))
+     )
+     ```
+     - parameter clauseChain: a `FetchChainableBuilderType` built from a chain of clauses
+     - returns: the number `DynamicObject`s that satisfy the specified `FetchChainableBuilderType`
+     */
+    func fetchCount<B: FetchChainableBuilderType>(_ clauseChain: B) -> Int?

    /**
     Fetches the `NSManagedObjectID` for the first `DynamicObject` that satisfies the specified `FetchClause`s. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
@@ -127,7 +169,7 @@ public protocol FetchableSource: class {
     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: the `NSManagedObjectID` for the first `DynamicObject` that satisfies the specified `FetchClause`s
     */
-    func fetchObjectID<T: DynamicObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> NSManagedObjectID?
+    func fetchObjectID<D>(_ from: From<D>, _ fetchClauses: FetchClause...) -> NSManagedObjectID?

    /**
     Fetches the `NSManagedObjectID` for the first `DynamicObject` that satisfies the specified `FetchClause`s. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
@@ -136,7 +178,21 @@ public protocol FetchableSource: class {
     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: the `NSManagedObjectID` for the first `DynamicObject` that satisfies the specified `FetchClause`s
     */
-    func fetchObjectID<T: DynamicObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> NSManagedObjectID?
+    func fetchObjectID<D>(_ from: From<D>, _ fetchClauses: [FetchClause]) -> NSManagedObjectID?
+    
+    /**
+     Fetches the `NSManagedObjectID` for the first `DynamicObject` that satisfies the specified `FetchChainableBuilderType` built from a chain of clauses.
+     ```
+     let youngestTeenID = source.fetchObjectID(
+         From<MyPersonEntity>()
+             .where(\.age > 18)
+             .orderBy(.ascending(\.age))
+     )
+     ```
+     - parameter clauseChain: a `FetchChainableBuilderType` built from a chain of clauses
+     - returns: the `NSManagedObjectID` for the first `DynamicObject` that satisfies the specified `FetchChainableBuilderType`
+     */
+    func fetchObjectID<B: FetchChainableBuilderType>(_ clauseChain: B) -> NSManagedObjectID?

    /**
     Fetches the `NSManagedObjectID` for all `DynamicObject`s that satisfy the specified `FetchClause`s. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
@@ -145,7 +201,7 @@ public protocol FetchableSource: class {
     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: the `NSManagedObjectID` for all `DynamicObject`s that satisfy the specified `FetchClause`s
     */
-    func fetchObjectIDs<T: DynamicObject>(_ from: From<T>, _ fetchClauses: FetchClause...) -> [NSManagedObjectID]?
+    func fetchObjectIDs<D>(_ from: From<D>, _ fetchClauses: FetchClause...) -> [NSManagedObjectID]?

    /**
     Fetches the `NSManagedObjectID` for all `DynamicObject`s that satisfy the specified `FetchClause`s. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
@@ -154,7 +210,21 @@ public protocol FetchableSource: class {
     - parameter fetchClauses: a series of `FetchClause` instances for the fetch request. Accepts `Where`, `OrderBy`, and `Tweak` clauses.
     - returns: the `NSManagedObjectID` for all `DynamicObject`s that satisfy the specified `FetchClause`s
     */
-    func fetchObjectIDs<T: DynamicObject>(_ from: From<T>, _ fetchClauses: [FetchClause]) -> [NSManagedObjectID]?
+    func fetchObjectIDs<D>(_ from: From<D>, _ fetchClauses: [FetchClause]) -> [NSManagedObjectID]?
+    
+    /**
+     Fetches the `NSManagedObjectID` for all `DynamicObject`s that satisfy the specified `FetchChainableBuilderType` built from a chain of clauses.
+     ```
+     let idsOfAdults = source.fetchObjectIDs(
+         From<MyPersonEntity>()
+             .where(\.age > 18)
+             .orderBy(.ascending(\.age))
+     )
+     ```
+     - parameter clauseChain: a `FetchChainableBuilderType` built from a chain of clauses
+     - returns: the `NSManagedObjectID` for all `DynamicObject`s that satisfy the specified `FetchChainableBuilderType`
+     */
+    func fetchObjectIDs<B: FetchChainableBuilderType>(_ clauseChain: B) -> [NSManagedObjectID]?
    
    /**
     The internal `NSManagedObjectContext` managed by this `FetchableSource`. Using this context directly should typically be avoided, and is provided by CoreStore only for extremely specialized cases.
--- a/Sources/FetchedResultsControllerDelegate.swift
+++ b/Sources/FetchedResultsControllerDelegate.swift
@@ -185,6 +185,10 @@ internal final class FetchedResultsControllerDelegate: NSObject, NSFetchedResult
                )
                return
            }
+            guard #available(iOS 9.0, tvOS 9.0, watchOS 9.0, *) else {
+                
+                return
+            }
            self.handler?.controller(
                controller,
                didChangeObject: anObject,
--- a/Sources/From+Querying.swift
+++ b/Sources/From+Querying.swift
@@ -0,0 +1,858 @@
+//
+//  From+Querying.swift
+//  CoreStore
+//
+//  Copyright © 2017 John Rommel Estropia
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all
+//  copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+//  SOFTWARE.
+//
+
+import Foundation
+import CoreData
+
+
+// MARK: - From
+
+public extension From {
+    
+    /**
+     Creates a `FetchChainBuilder` that starts with the specified `Where` clause
+     
+     - parameter clause: the `Where` clause to create a `FetchChainBuilder` with
+     - returns: a `FetchChainBuilder` that starts with the specified `Where` clause
+     */
+    public func `where`(_ clause: Where<D>) -> FetchChainBuilder<D> {
+        
+        return self.fetchChain(appending: clause)
+    }
+    
+    /**
+     Creates a `FetchChainBuilder` with a predicate using the specified string format and arguments
+     
+     - parameter format: the format string for the predicate
+     - parameter args: the arguments for `format`
+     - returns: a `FetchChainBuilder` with a predicate using the specified string format and arguments
+     */
+    public func `where`(format: String, _ args: Any...) -> FetchChainBuilder<D> {
+        
+        return self.fetchChain(appending: Where<D>(format, argumentArray: args))
+    }
+    
+    /**
+     Creates a `FetchChainBuilder` with a predicate using the specified string format and arguments
+     
+     - parameter format: the format string for the predicate
+     - parameter argumentArray: the arguments for `format`
+     - returns: a `FetchChainBuilder` with a predicate using the specified string format and arguments
+     */
+    public func `where`(format: String, argumentArray: [Any]?) -> FetchChainBuilder<D> {
+        
+        return self.fetchChain(appending: Where<D>(format, argumentArray: argumentArray))
+    }
+    
+    /**
+     Creates a `FetchChainBuilder` with a series of `SortKey`s
+     
+     - parameter sortKey: a single `SortKey`
+     - parameter sortKeys: a series of other `SortKey`s
+     - returns: a `FetchChainBuilder` with a series of `SortKey`s
+     */
+    public func orderBy(_ sortKey: OrderBy<D>.SortKey, _ sortKeys: OrderBy<D>.SortKey...) -> FetchChainBuilder<D> {
+        
+        return self.fetchChain(appending: OrderBy<D>([sortKey] + sortKeys))
+    }
+    
+    /**
+     Creates a `FetchChainBuilder` with a closure where the `NSFetchRequest` may be configured
+     
+     - parameter fetchRequest: the block to customize the `NSFetchRequest`
+     - returns: a `FetchChainBuilder` with closure where the `NSFetchRequest` may be configured
+     */
+    public func tweak(_ fetchRequest: @escaping (NSFetchRequest<NSFetchRequestResult>) -> Void) -> FetchChainBuilder<D> {
+        
+        return self.fetchChain(appending: Tweak(fetchRequest))
+    }
+    
+    /**
+     Creates a `FetchChainBuilder` and immediately appending a `FetchClause`
+     
+     - parameter clause: the `FetchClause` to add to the `FetchChainBuilder`
+     - returns: a `FetchChainBuilder` containing the specified `FetchClause`
+     */
+    public func appending(_ clause: FetchClause) -> FetchChainBuilder<D> {
+        
+        return self.fetchChain(appending: clause)
+    }
+    
+    /**
+     Creates a `FetchChainBuilder` and immediately appending a series of `FetchClause`s
+     
+     - parameter clauses: the `FetchClause`s to add to the `FetchChainBuilder`
+     - returns: a `FetchChainBuilder` containing the specified `FetchClause`s
+     */
+    public func appending<S: Sequence>(contentsOf clauses: S) -> FetchChainBuilder<D> where S.Element == FetchClause {
+        
+        return self.fetchChain(appending: clauses)
+    }
+    
+    /**
+     Creates a `QueryChainBuilder` that starts with the specified `Select` clause
+     
+     - parameter clause: the `Select` clause to create a `QueryChainBuilder` with
+     - returns: a `QueryChainBuilder` that starts with the specified `Select` clause
+     */
+    public func select<R>(_ clause: Select<D, R>) -> QueryChainBuilder<D, R> {
+        
+        return .init(
+            from: self,
+            select: clause,
+            queryClauses: []
+        )
+    }
+    
+    /**
+     Creates a `QueryChainBuilder` that starts with a `Select` clause created from the specified `SelectTerm`s
+     
+     - parameter resultType: the generic `SelectResultType` for the `Select` clause
+     - parameter selectTerm: a `SelectTerm`
+     - parameter selectTerms: a series of `SelectTerm`s
+     - returns: a `QueryChainBuilder` that starts with a `Select` clause created from the specified `SelectTerm`s
+     */
+    public func select<R>(_ resultType: R.Type, _ selectTerm: SelectTerm<D>, _ selectTerms: SelectTerm<D>...) -> QueryChainBuilder<D, R> {
+        
+        return self.select(resultType, [selectTerm] + selectTerms)
+    }
+    
+    /**
+     Creates a `QueryChainBuilder` that starts with a `Select` clause created from the specified `SelectTerm`s
+     
+     - parameter resultType: the generic `SelectResultType` for the `Select` clause
+     - parameter selectTerms: a series of `SelectTerm`s
+     - returns: a `QueryChainBuilder` that starts with a `Select` clause created from the specified `SelectTerm`s
+     */
+    public func select<R>(_ resultType: R.Type, _ selectTerms: [SelectTerm<D>]) -> QueryChainBuilder<D, R> {
+        
+        return .init(
+            from: self,
+            select: .init(selectTerms),
+            queryClauses: []
+        )
+    }
+    
+    /**
+     Creates a `SectionMonitorChainBuilder` that starts with the `SectionBy` to use to group `ListMonitor` objects into sections
+     
+     - parameter clause: the `SectionBy` to be used by the `ListMonitor`
+     - returns: a `SectionMonitorChainBuilder` that is sectioned by the specified key path
+     */
+    @available(OSX 10.12, *)
+    public func sectionBy(_ clause: SectionBy<D>) -> SectionMonitorChainBuilder<D> {
+        
+        return .init(
+            from: self,
+            sectionBy: clause,
+            fetchClauses: []
+        )
+    }
+    
+    /**
+     Creates a `SectionMonitorChainBuilder` with the key path to use to group `ListMonitor` objects into sections
+     
+     - parameter sectionKeyPath: the key path to use to group the objects into sections
+     - returns: a `SectionMonitorChainBuilder` that is sectioned by the specified key path
+     */
+    @available(OSX 10.12, *)
+    public func sectionBy(_ sectionKeyPath: KeyPathString) -> SectionMonitorChainBuilder<D> {
+        
+        return self.sectionBy(sectionKeyPath, { $0 })
+    }
+    
+    /**
+     Creates a `SectionMonitorChainBuilder` with the key path to use to group `ListMonitor` objects into sections, and a closure to transform the value for the key path to an appropriate section name
+     
+     - Important: Some utilities (such as `ListMonitor`s) may keep `SectionBy`s in memory and may thus introduce retain cycles if reference captures are not handled properly.
+     - parameter sectionKeyPath: the key path to use to group the objects into sections
+     - parameter sectionIndexTransformer: a closure to transform the value for the key path to an appropriate section name
+     - returns: a `SectionMonitorChainBuilder` that is sectioned by the specified key path
+     */
+    @available(OSX 10.12, *)
+    public func sectionBy(_ sectionKeyPath: KeyPathString, _ sectionIndexTransformer: @escaping (_ sectionName: String?) -> String?) -> SectionMonitorChainBuilder<D> {
+        
+        return .init(
+            from: self,
+            sectionBy: .init(sectionKeyPath, sectionIndexTransformer),
+            fetchClauses: []
+        )
+    }
+    
+    
+    // MARK: Private
+    
+    private func fetchChain(appending clause: FetchClause) -> FetchChainBuilder<D> {
+        
+        return .init(from: self, fetchClauses: [clause])
+    }
+    
+    private func fetchChain<S: Sequence>(appending clauses: S) -> FetchChainBuilder<D> where S.Element == FetchClause {
+        
+        return .init(from: self, fetchClauses: Array(clauses))
+    }
+}
+
+public extension From where D: NSManagedObject {
+    
+    /**
+     Creates a `QueryChainBuilder` that starts with a `Select` clause created from the specified key path
+     
+     - parameter keyPath: the keyPath to query the value for
+     - returns: a `QueryChainBuilder` that starts with a `Select` clause created from the specified key path
+     */
+    public func select<R>(_ keyPath: KeyPath<D, R>) -> QueryChainBuilder<D, R> {
+        
+        return self.select(R.self, [SelectTerm<D>.attribute(keyPath)])
+    }
+    
+    /**
+     Creates a `SectionMonitorChainBuilder` with the key path to use to group `ListMonitor` objects into sections
+     
+     - parameter sectionKeyPath: the `KeyPath` to use to group the objects into sections
+     - returns: a `SectionMonitorChainBuilder` that is sectioned by the specified key path
+     */
+    @available(OSX 10.12, *)
+    public func sectionBy<T>(_ sectionKeyPath: KeyPath<D, T>) -> SectionMonitorChainBuilder<D> {
+        
+        return self.sectionBy(sectionKeyPath._kvcKeyPathString!, { $0 })
+    }
+    
+    /**
+     Creates a `SectionMonitorChainBuilder` with the key path to use to group `ListMonitor` objects into sections, and a closure to transform the value for the key path to an appropriate section name
+     
+     - Important: Some utilities (such as `ListMonitor`s) may keep `SectionBy`s in memory and may thus introduce retain cycles if reference captures are not handled properly.
+     - parameter sectionKeyPath: the `KeyPath` to use to group the objects into sections
+     - parameter sectionIndexTransformer: a closure to transform the value for the key path to an appropriate section name
+     - returns: a `SectionMonitorChainBuilder` that is sectioned by the specified key path
+     */
+    @available(OSX 10.12, *)
+    public func sectionBy<T>(_ sectionKeyPath: KeyPath<D, T>, _ sectionIndexTransformer: @escaping (_ sectionName: String?) -> String?) -> SectionMonitorChainBuilder<D> {
+        
+        return self.sectionBy(sectionKeyPath._kvcKeyPathString!, sectionIndexTransformer)
+    }
+}
+
+public extension From where D: CoreStoreObject {
+    
+    /**
+     Creates a `FetchChainBuilder` that starts with the specified `Where` clause
+     
+     - parameter clause: a closure that returns a `Where` clause
+     - returns: a `FetchChainBuilder` that starts with the specified `Where` clause
+     */
+    public func `where`<T: AnyWhereClause>(_ clause: (D) -> T) -> FetchChainBuilder<D> {
+        
+        return self.fetchChain(appending: clause(D.meta))
+    }
+    
+    /**
+     Creates a `QueryChainBuilder` that starts with a `Select` clause created from the specified key path
+     
+     - parameter keyPath: the keyPath to query the value for
+     - returns: a `QueryChainBuilder` that starts with a `Select` clause created from the specified key path
+     */
+    public func select<R>(_ keyPath: KeyPath<D, ValueContainer<D>.Required<R>>) -> QueryChainBuilder<D, R> {
+        
+        return self.select(R.self, [SelectTerm<D>.attribute(keyPath)])
+    }
+    
+    /**
+     Creates a `QueryChainBuilder` that starts with a `Select` clause created from the specified key path
+     
+     - parameter keyPath: the keyPath to query the value for
+     - returns: a `QueryChainBuilder` that starts with a `Select` clause created from the specified key path
+     */
+    public func select<R>(_ keyPath: KeyPath<D, ValueContainer<D>.Optional<R>>) -> QueryChainBuilder<D, R> {
+        
+        return self.select(R.self, [SelectTerm<D>.attribute(keyPath)])
+    }
+    
+    /**
+     Creates a `QueryChainBuilder` that starts with a `Select` clause created from the specified key path
+     
+     - parameter keyPath: the keyPath to query the value for
+     - returns: a `QueryChainBuilder` that starts with a `Select` clause created from the specified key path
+     */
+    public func select<R>(_ keyPath: KeyPath<D, TransformableContainer<D>.Required<R>>) -> QueryChainBuilder<D, R> {
+        
+        return self.select(R.self, [SelectTerm<D>.attribute(keyPath)])
+    }
+    
+    /**
+     Creates a `QueryChainBuilder` that starts with a `Select` clause created from the specified key path
+     
+     - parameter keyPath: the keyPath to query the value for
+     - returns: a `QueryChainBuilder` that starts with a `Select` clause created from the specified key path
+     */
+    public func select<R>(_ keyPath: KeyPath<D, TransformableContainer<D>.Optional<R>>) -> QueryChainBuilder<D, R> {
+        
+        return self.select(R.self, [SelectTerm<D>.attribute(keyPath)])
+    }
+    
+    /**
+     Creates a `SectionMonitorChainBuilder` with the key path to use to group `ListMonitor` objects into sections
+     
+     - parameter sectionKeyPath: the `KeyPath` to use to group the objects into sections
+     - returns: a `SectionMonitorChainBuilder` that is sectioned by the specified key path
+     */
+    @available(OSX 10.12, *)
+    public func sectionBy<T>(_ sectionKeyPath: KeyPath<D, ValueContainer<D>.Required<T>>) -> SectionMonitorChainBuilder<D> {
+        
+        return self.sectionBy(D.meta[keyPath: sectionKeyPath].keyPath, { $0 })
+    }
+    
+    /**
+     Creates a `SectionMonitorChainBuilder` with the key path to use to group `ListMonitor` objects into sections
+     
+     - parameter sectionKeyPath: the `KeyPath` to use to group the objects into sections
+     - returns: a `SectionMonitorChainBuilder` that is sectioned by the specified key path
+     */
+    @available(OSX 10.12, *)
+    public func sectionBy<T>(_ sectionKeyPath: KeyPath<D, ValueContainer<D>.Optional<T>>) -> SectionMonitorChainBuilder<D> {
+        
+        return self.sectionBy(D.meta[keyPath: sectionKeyPath].keyPath, { $0 })
+    }
+    
+    /**
+     Creates a `SectionMonitorChainBuilder` with the key path to use to group `ListMonitor` objects into sections
+     
+     - parameter sectionKeyPath: the `KeyPath` to use to group the objects into sections
+     - returns: a `SectionMonitorChainBuilder` that is sectioned by the specified key path
+     */
+    @available(OSX 10.12, *)
+    public func sectionBy<T>(_ sectionKeyPath: KeyPath<D, TransformableContainer<D>.Required<T>>) -> SectionMonitorChainBuilder<D> {
+        
+        return self.sectionBy(D.meta[keyPath: sectionKeyPath].keyPath, { $0 })
+    }
+    
+    /**
+     Creates a `SectionMonitorChainBuilder` with the key path to use to group `ListMonitor` objects into sections
+     
+     - parameter sectionKeyPath: the `KeyPath` to use to group the objects into sections
+     - returns: a `SectionMonitorChainBuilder` that is sectioned by the specified key path
+     */
+    @available(OSX 10.12, *)
+    public func sectionBy<T>(_ sectionKeyPath: KeyPath<D, TransformableContainer<D>.Optional<T>>) -> SectionMonitorChainBuilder<D> {
+        
+        return self.sectionBy(D.meta[keyPath: sectionKeyPath].keyPath, { $0 })
+    }
+    
+    /**
+     Creates a `SectionMonitorChainBuilder` with the key path to use to group `ListMonitor` objects into sections, and a closure to transform the value for the key path to an appropriate section name
+     
+     - Important: Some utilities (such as `ListMonitor`s) may keep `SectionBy`s in memory and may thus introduce retain cycles if reference captures are not handled properly.
+     - parameter sectionKeyPath: the `KeyPath` to use to group the objects into sections
+     - parameter sectionIndexTransformer: a closure to transform the value for the key path to an appropriate section name
+     - returns: a `SectionMonitorChainBuilder` that is sectioned by the specified key path
+     */
+    @available(OSX 10.12, *)
+    public func sectionBy<T>(_ sectionKeyPath: KeyPath<D, ValueContainer<D>.Required<T>>, _ sectionIndexTransformer: @escaping (_ sectionName: String?) -> String?) -> SectionMonitorChainBuilder<D> {
+        
+        return self.sectionBy(D.meta[keyPath: sectionKeyPath].keyPath, sectionIndexTransformer)
+    }
+    
+    /**
+     Creates a `SectionMonitorChainBuilder` with the key path to use to group `ListMonitor` objects into sections, and a closure to transform the value for the key path to an appropriate section name
+     
+     - Important: Some utilities (such as `ListMonitor`s) may keep `SectionBy`s in memory and may thus introduce retain cycles if reference captures are not handled properly.
+     - parameter sectionKeyPath: the `KeyPath` to use to group the objects into sections
+     - parameter sectionIndexTransformer: a closure to transform the value for the key path to an appropriate section name
+     - returns: a `SectionMonitorChainBuilder` that is sectioned by the specified key path
+     */
+    @available(OSX 10.12, *)
+    public func sectionBy<T>(_ sectionKeyPath: KeyPath<D, ValueContainer<D>.Optional<T>>, _ sectionIndexTransformer: @escaping (_ sectionName: String?) -> String?) -> SectionMonitorChainBuilder<D> {
+        
+        return self.sectionBy(D.meta[keyPath: sectionKeyPath].keyPath, sectionIndexTransformer)
+    }
+    
+    /**
+     Creates a `SectionMonitorChainBuilder` with the key path to use to group `ListMonitor` objects into sections, and a closure to transform the value for the key path to an appropriate section name
+     
+     - Important: Some utilities (such as `ListMonitor`s) may keep `SectionBy`s in memory and may thus introduce retain cycles if reference captures are not handled properly.
+     - parameter sectionKeyPath: the `KeyPath` to use to group the objects into sections
+     - parameter sectionIndexTransformer: a closure to transform the value for the key path to an appropriate section name
+     - returns: a `SectionMonitorChainBuilder` that is sectioned by the specified key path
+     */
+    @available(OSX 10.12, *)
+    public func sectionBy<T>(_ sectionKeyPath: KeyPath<D, TransformableContainer<D>.Required<T>>, _ sectionIndexTransformer: @escaping (_ sectionName: String?) -> String?) -> SectionMonitorChainBuilder<D> {
+        
+        return self.sectionBy(D.meta[keyPath: sectionKeyPath].keyPath, sectionIndexTransformer)
+    }
+    
+    /**
+     Creates a `SectionMonitorChainBuilder` with the key path to use to group `ListMonitor` objects into sections, and a closure to transform the value for the key path to an appropriate section name
+     
+     - Important: Some utilities (such as `ListMonitor`s) may keep `SectionBy`s in memory and may thus introduce retain cycles if reference captures are not handled properly.
+     - parameter sectionKeyPath: the `KeyPath` to use to group the objects into sections
+     - parameter sectionIndexTransformer: a closure to transform the value for the key path to an appropriate section name
+     - returns: a `SectionMonitorChainBuilder` that is sectioned by the specified key path
+     */
+    @available(OSX 10.12, *)
+    public func sectionBy<T>(_ sectionKeyPath: KeyPath<D, TransformableContainer<D>.Optional<T>>, _ sectionIndexTransformer: @escaping (_ sectionName: String?) -> String?) -> SectionMonitorChainBuilder<D> {
+        
+        return self.sectionBy(D.meta[keyPath: sectionKeyPath].keyPath, sectionIndexTransformer)
+    }
+}
+
+public extension FetchChainBuilder {
+    
+    /**
+     Adds a `Where` clause to the `FetchChainBuilder`
+     
+     - parameter clause: a `Where` clause to add to the fetch builder
+     - returns: a new `FetchChainBuilder` containing the `Where` clause
+     */
+    public func `where`(_ clause: Where<D>) -> FetchChainBuilder<D> {
+        
+        return self.fetchChain(appending: clause)
+    }
+    
+    /**
+     Adds a `Where` clause to the `FetchChainBuilder`
+     
+     - parameter format: the format string for the predicate
+     - parameter args: the arguments for `format`
+     - returns: a new `FetchChainBuilder` containing the `Where` clause
+     */
+    public func `where`(format: String, _ args: Any...) -> FetchChainBuilder<D> {
+        
+        return self.fetchChain(appending: Where<D>(format, argumentArray: args))
+    }
+    
+    /**
+     Adds a `Where` clause to the `FetchChainBuilder`
+     
+     - parameter format: the format string for the predicate
+     - parameter argumentArray: the arguments for `format`
+     - returns: a new `FetchChainBuilder` containing the `Where` clause
+     */
+    public func `where`(format: String, argumentArray: [Any]?) -> FetchChainBuilder<D> {
+        
+        return self.fetchChain(appending: Where<D>(format, argumentArray: argumentArray))
+    }
+    
+    /**
+     Adds an `OrderBy` clause to the `FetchChainBuilder`
+     
+     - parameter sortKey: a single `SortKey`
+     - parameter sortKeys: a series of other `SortKey`s
+     - returns: a new `FetchChainBuilder` containing the `OrderBy` clause
+     */
+    public func orderBy(_ sortKey: OrderBy<D>.SortKey, _ sortKeys: OrderBy<D>.SortKey...) -> FetchChainBuilder<D> {
+        
+        return self.fetchChain(appending: OrderBy<D>([sortKey] + sortKeys))
+    }
+    
+    /**
+     Adds a `Tweak` clause to the `FetchChainBuilder` with a closure where the `NSFetchRequest` may be configured
+     
+     - parameter fetchRequest: the block to customize the `NSFetchRequest`
+     - returns: a new `FetchChainBuilder` containing the `Tweak` clause
+     */
+    public func tweak(_ fetchRequest: @escaping (NSFetchRequest<NSFetchRequestResult>) -> Void) -> FetchChainBuilder<D> {
+        
+        return self.fetchChain(appending: Tweak(fetchRequest))
+    }
+    
+    /**
+     Appends a `FetchClause` to the `FetchChainBuilder`
+     
+     - parameter clause: the `FetchClause` to add to the `FetchChainBuilder`
+     - returns: a new `FetchChainBuilder` containing the `FetchClause`
+     */
+    public func appending(_ clause: FetchClause) -> FetchChainBuilder<D> {
+        
+        return self.fetchChain(appending: clause)
+    }
+    
+    /**
+     Appends a series of `FetchClause`s to the `FetchChainBuilder`
+     
+     - parameter clauses: the `FetchClause`s to add to the `FetchChainBuilder`
+     - returns: a new `FetchChainBuilder` containing the `FetchClause`s
+     */
+    public func appending<S: Sequence>(contentsOf clauses: S) -> FetchChainBuilder<D> where S.Element == FetchClause {
+        
+        return self.fetchChain(appending: clauses)
+    }
+    
+    
+    // MARK: Private
+    
+    private func fetchChain(appending clause: FetchClause) -> FetchChainBuilder<D> {
+        
+        return .init(
+            from: self.from,
+            fetchClauses: self.fetchClauses + [clause]
+        )
+    }
+    
+    private func fetchChain<S: Sequence>(appending clauses: S) -> FetchChainBuilder<D> where S.Element == FetchClause {
+        
+        return .init(
+            from: self.from,
+            fetchClauses: self.fetchClauses + Array(clauses)
+        )
+    }
+}
+
+public extension FetchChainBuilder where D: CoreStoreObject {
+    
+    public func `where`<T: AnyWhereClause>(_ clause: (D) -> T) -> FetchChainBuilder<D> {
+        
+        return self.fetchChain(appending: clause(D.meta))
+    }
+}
+
+public extension QueryChainBuilder {
+    
+    /**
+     Adds a `Where` clause to the `QueryChainBuilder`
+     
+     - parameter clause: a `Where` clause to add to the query builder
+     - returns: a new `QueryChainBuilder` containing the `Where` clause
+     */
+    public func `where`(_ clause: Where<D>) -> QueryChainBuilder<D, R> {
+        
+        return self.queryChain(appending: clause)
+    }
+    
+    /**
+     Adds a `Where` clause to the `QueryChainBuilder`
+     
+     - parameter format: the format string for the predicate
+     - parameter args: the arguments for `format`
+     - returns: a new `QueryChainBuilder` containing the `Where` clause
+     */
+    public func `where`(format: String, _ args: Any...) -> QueryChainBuilder<D, R> {
+        
+        return self.queryChain(appending: Where<D>(format, argumentArray: args))
+    }
+    
+    /**
+     Adds a `Where` clause to the `QueryChainBuilder`
+     
+     - parameter format: the format string for the predicate
+     - parameter argumentArray: the arguments for `format`
+     - returns: a new `QueryChainBuilder` containing the `Where` clause
+     */
+    public func `where`(format: String, argumentArray: [Any]?) -> QueryChainBuilder<D, R> {
+        
+        return self.queryChain(appending: Where<D>(format, argumentArray: argumentArray))
+    }
+    
+    /**
+     Adds an `OrderBy` clause to the `QueryChainBuilder`
+     
+     - parameter sortKey: a single `SortKey`
+     - parameter sortKeys: a series of other `SortKey`s
+     - returns: a new `QueryChainBuilder` containing the `OrderBy` clause
+     */
+    public func orderBy(_ sortKey: OrderBy<D>.SortKey, _ sortKeys: OrderBy<D>.SortKey...) -> QueryChainBuilder<D, R> {
+        
+        return self.queryChain(appending: OrderBy<D>([sortKey] + sortKeys))
+    }
+    
+    /**
+     Adds a `Tweak` clause to the `QueryChainBuilder` with a closure where the `NSFetchRequest` may be configured
+     
+     - parameter fetchRequest: the block to customize the `NSFetchRequest`
+     - returns: a new `QueryChainBuilder` containing the `Tweak` clause
+     */
+    public func tweak(_ fetchRequest: @escaping (NSFetchRequest<NSFetchRequestResult>) -> Void) -> QueryChainBuilder<D, R> {
+        
+        return self.queryChain(appending: Tweak(fetchRequest))
+    }
+    
+    /**
+     Adds a `GroupBy` clause to the `QueryChainBuilder`
+     
+     - parameter clause: a `GroupBy` clause to add to the query builder
+     - returns: a new `QueryChainBuilder` containing the `GroupBy` clause
+     */
+    public func groupBy(_ clause: GroupBy<D>) -> QueryChainBuilder<D, R> {
+        
+        return self.queryChain(appending: clause)
+    }
+    
+    /**
+     Adds a `GroupBy` clause to the `QueryChainBuilder`
+     
+     - parameter keyPath: a key path to group the query results with
+     - parameter keyPaths: other key paths to group the query results with
+     - returns: a new `QueryChainBuilder` containing the `GroupBy` clause
+     */
+    public func groupBy(_ keyPath: KeyPathString, _ keyPaths: KeyPathString...) -> QueryChainBuilder<D, R> {
+        
+        return self.groupBy(GroupBy<D>([keyPath] + keyPaths))
+    }
+    
+    /**
+     Adds a `GroupBy` clause to the `QueryChainBuilder`
+     
+     - parameter keyPaths: a series of key paths to group the query results with
+     - returns: a new `QueryChainBuilder` containing the `GroupBy` clause
+     */
+    public func groupBy(_ keyPaths: [KeyPathString]) -> QueryChainBuilder<D, R> {
+        
+        return self.queryChain(appending: GroupBy<D>(keyPaths))
+    }
+    
+    /**
+     Appends a `QueryClause` to the `QueryChainBuilder`
+     
+     - parameter clause: the `QueryClause` to add to the `QueryChainBuilder`
+     - returns: a new `QueryChainBuilder` containing the `QueryClause`
+     */
+    public func appending(_ clause: QueryClause) -> QueryChainBuilder<D, R> {
+        
+        return self.queryChain(appending: clause)
+    }
+    
+    /**
+     Appends a series of `QueryClause`s to the `QueryChainBuilder`
+     
+     - parameter clauses: the `QueryClause`s to add to the `QueryChainBuilder`
+     - returns: a new `QueryChainBuilder` containing the `QueryClause`s
+     */
+    public func appending<S: Sequence>(contentsOf clauses: S) -> QueryChainBuilder<D, R> where S.Element == QueryClause {
+        
+        return self.queryChain(appending: clauses)
+    }
+    
+    
+    // MARK: Private
+    
+    private func queryChain(appending clause: QueryClause) -> QueryChainBuilder<D, R> {
+        
+        return .init(
+            from: self.from,
+            select: self.select,
+            queryClauses: self.queryClauses + [clause]
+        )
+    }
+    
+    private func queryChain<S: Sequence>(appending clauses: S) -> QueryChainBuilder<D, R> where S.Element == QueryClause {
+        
+        return .init(
+            from: self.from,
+            select: self.select,
+            queryClauses: self.queryClauses + Array(clauses)
+        )
+    }
+}
+
+public extension QueryChainBuilder where D: NSManagedObject {
+    
+    /**
+     Adds a `GroupBy` clause to the `QueryChainBuilder`
+     
+     - parameter keyPath: a key path to group the query results with
+     - returns: a new `QueryChainBuilder` containing the `GroupBy` clause
+     */
+    public func groupBy<T>(_ keyPath: KeyPath<D, T>) -> QueryChainBuilder<D, R> {
+        
+        return self.groupBy(GroupBy<D>(keyPath))
+    }
+}
+
+public extension QueryChainBuilder where D: CoreStoreObject {
+    
+    /**
+     Adds a `Where` clause to the `QueryChainBuilder`
+     
+     - parameter clause: a `Where` clause to add to the query builder
+     - returns: a new `QueryChainBuilder` containing the `Where` clause
+     */
+    public func `where`<T: AnyWhereClause>(_ clause: (D) -> T) -> QueryChainBuilder<D, R> {
+        
+        return self.queryChain(appending: clause(D.meta))
+    }
+    
+    /**
+     Adds a `GroupBy` clause to the `QueryChainBuilder`
+     
+     - parameter keyPath: a key path to group the query results with
+     - returns: a new `QueryChainBuilder` containing the `GroupBy` clause
+     */
+    public func groupBy<T>(_ keyPath: KeyPath<D, ValueContainer<D>.Required<T>>) -> QueryChainBuilder<D, R> {
+        
+        return self.groupBy(GroupBy<D>(keyPath))
+    }
+    
+    /**
+     Adds a `GroupBy` clause to the `QueryChainBuilder`
+     
+     - parameter keyPath: a key path to group the query results with
+     - returns: a new `QueryChainBuilder` containing the `GroupBy` clause
+     */
+    public func groupBy<T>(_ keyPath: KeyPath<D, ValueContainer<D>.Optional<T>>) -> QueryChainBuilder<D, R> {
+        
+        return self.groupBy(GroupBy<D>(keyPath))
+    }
+    
+    /**
+     Adds a `GroupBy` clause to the `QueryChainBuilder`
+     
+     - parameter keyPath: a key path to group the query results with
+     - returns: a new `QueryChainBuilder` containing the `GroupBy` clause
+     */
+    public func groupBy<T>(_ keyPath: KeyPath<D, TransformableContainer<D>.Required<T>>) -> QueryChainBuilder<D, R> {
+        
+        return self.groupBy(GroupBy<D>(keyPath))
+    }
+    
+    /**
+     Adds a `GroupBy` clause to the `QueryChainBuilder`
+     
+     - parameter keyPath: a key path to group the query results with
+     - returns: a new `QueryChainBuilder` containing the `GroupBy` clause
+     */
+    public func groupBy<T>(_ keyPath: KeyPath<D, TransformableContainer<D>.Optional<T>>) -> QueryChainBuilder<D, R> {
+        
+        return self.groupBy(GroupBy<D>(keyPath))
+    }
+}
+
+@available(OSX 10.12, *)
+public extension SectionMonitorChainBuilder {
+    
+    /**
+     Adds a `Where` clause to the `SectionMonitorChainBuilder`
+     
+     - parameter clause: a `Where` clause to add to the fetch builder
+     - returns: a new `SectionMonitorChainBuilder` containing the `Where` clause
+     */
+    public func `where`(_ clause: Where<D>) -> SectionMonitorChainBuilder<D> {
+        
+        return self.sectionMonitorChain(appending: clause)
+    }
+    
+    /**
+     Adds a `Where` clause to the `SectionMonitorChainBuilder`
+     
+     - parameter format: the format string for the predicate
+     - parameter args: the arguments for `format`
+     - returns: a new `SectionMonitorChainBuilder` containing the `Where` clause
+     */
+    public func `where`(format: String, _ args: Any...) -> SectionMonitorChainBuilder<D> {
+        
+        return self.sectionMonitorChain(appending: Where<D>(format, argumentArray: args))
+    }
+    
+    /**
+     Adds a `Where` clause to the `SectionMonitorChainBuilder`
+     
+     - parameter format: the format string for the predicate
+     - parameter argumentArray: the arguments for `format`
+     - returns: a new `SectionMonitorChainBuilder` containing the `Where` clause
+     */
+    public func `where`(format: String, argumentArray: [Any]?) -> SectionMonitorChainBuilder<D> {
+        
+        return self.sectionMonitorChain(appending: Where<D>(format, argumentArray: argumentArray))
+    }
+    
+    /**
+     Adds an `OrderBy` clause to the `SectionMonitorChainBuilder`
+     
+     - parameter sortKey: a single `SortKey`
+     - parameter sortKeys: a series of other `SortKey`s
+     - returns: a new `SectionMonitorChainBuilder` containing the `OrderBy` clause
+     */
+    public func orderBy(_ sortKey: OrderBy<D>.SortKey, _ sortKeys: OrderBy<D>.SortKey...) -> SectionMonitorChainBuilder<D> {
+        
+        return self.sectionMonitorChain(appending: OrderBy<D>([sortKey] + sortKeys))
+    }
+    
+    /**
+     Adds a `Tweak` clause to the `SectionMonitorChainBuilder` with a closure where the `NSFetchRequest` may be configured
+     
+     - parameter fetchRequest: the block to customize the `NSFetchRequest`
+     - returns: a new `SectionMonitorChainBuilder` containing the `Tweak` clause
+     */
+    public func tweak(_ fetchRequest: @escaping (NSFetchRequest<NSFetchRequestResult>) -> Void) -> SectionMonitorChainBuilder<D> {
+        
+        return self.sectionMonitorChain(appending: Tweak(fetchRequest))
+    }
+    
+    /**
+     Appends a `QueryClause` to the `SectionMonitorChainBuilder`
+     
+     - parameter clause: the `QueryClause` to add to the `SectionMonitorChainBuilder`
+     - returns: a new `SectionMonitorChainBuilder` containing the `QueryClause`
+     */
+    public func appending(_ clause: FetchClause) -> SectionMonitorChainBuilder<D> {
+        
+        return self.sectionMonitorChain(appending: clause)
+    }
+    
+    /**
+     Appends a series of `QueryClause`s to the `SectionMonitorChainBuilder`
+     
+     - parameter clauses: the `QueryClause`s to add to the `SectionMonitorChainBuilder`
+     - returns: a new `SectionMonitorChainBuilder` containing the `QueryClause`s
+     */
+    public func appending<S: Sequence>(contentsOf clauses: S) -> SectionMonitorChainBuilder<D> where S.Element == FetchClause {
+        
+        return self.sectionMonitorChain(appending: clauses)
+    }
+    
+    
+    // MARK: Private
+    
+    private func sectionMonitorChain(appending clause: FetchClause) -> SectionMonitorChainBuilder<D> {
+        
+        return .init(
+            from: self.from,
+            sectionBy: self.sectionBy,
+            fetchClauses: self.fetchClauses + [clause]
+        )
+    }
+    
+    private func sectionMonitorChain<S: Sequence>(appending clauses: S) -> SectionMonitorChainBuilder<D> where S.Element == FetchClause {
+        
+        return .init(
+            from: self.from,
+            sectionBy: self.sectionBy,
+            fetchClauses: self.fetchClauses + Array(clauses)
+        )
+    }
+}
+
+@available(OSX 10.12, *)
+public extension SectionMonitorChainBuilder where D: CoreStoreObject {
+    
+    /**
+     Adds a `Where` clause to the `SectionMonitorChainBuilder`
+     
+     - parameter clause: a `Where` clause to add to the fetch builder
+     - returns: a new `SectionMonitorChainBuilder` containing the `Where` clause
+     */
+    public func `where`<T: AnyWhereClause>(_ clause: (D) -> T) -> SectionMonitorChainBuilder<D> {
+        
+        return self.sectionMonitorChain(appending: clause(D.meta))
+    }
+}
--- a/Sources/From.swift
+++ b/Sources/From.swift
@@ -39,12 +39,12 @@ import CoreData
 let person = transaction.fetchOne(From<Person>("Configuration1"))
 ```
 */
-public struct From<T: DynamicObject> {
+public struct From<D: DynamicObject> {
    
    /**
     The associated `NSManagedObject` or `CoreStoreObject` entity class
     */
-    public let entityClass: T.Type
+    public let entityClass: D.Type
    
    /**
     The `NSPersistentStore` configuration names to associate objects from.
@@ -60,7 +60,7 @@ public struct From<T: DynamicObject> {
     */
    public init() {
        
-        self.init(entityClass: T.self, configurations: nil)
+        self.init(entityClass: D.self, configurations: nil)
    }
    
    /**
@@ -70,7 +70,7 @@ public struct From<T: DynamicObject> {
     ```
     - parameter entity: the associated `NSManagedObject` or `CoreStoreObject` type
     */
-    public init(_ entity: T.Type) {
+    public init(_ entity: D.Type) {
        
        self.init(entityClass: entity, configurations: nil)
    }
@@ -85,7 +85,7 @@ public struct From<T: DynamicObject> {
     */
    public init(_ configuration: ModelConfiguration, _ otherConfigurations: ModelConfiguration...) {
        
-        self.init(entityClass: T.self, configurations: [configuration] + otherConfigurations)
+        self.init(entityClass: D.self, configurations: [configuration] + otherConfigurations)
    }
    
    /**
@@ -97,7 +97,7 @@ public struct From<T: DynamicObject> {
     */
    public init(_ configurations: [ModelConfiguration]) {
        
-        self.init(entityClass: T.self, configurations: configurations)
+        self.init(entityClass: D.self, configurations: configurations)
    }
    
    /**
@@ -109,7 +109,7 @@ public struct From<T: DynamicObject> {
     - parameter configuration: the `NSPersistentStore` configuration name to associate objects from. This parameter is required if multiple configurations contain the created `NSManagedObject` or `CoreStoreObject`'s entity type. Set to `nil` to use the default configuration.
     - parameter otherConfigurations: an optional list of other configuration names to associate objects from (see `configuration` parameter)
     */
-    public init(_ entity: T.Type, _ configuration: ModelConfiguration, _ otherConfigurations: ModelConfiguration...) {
+    public init(_ entity: D.Type, _ configuration: ModelConfiguration, _ otherConfigurations: ModelConfiguration...) {
        
        self.init(entityClass: entity, configurations: [configuration] + otherConfigurations)
    }
@@ -122,7 +122,7 @@ public struct From<T: DynamicObject> {
     - parameter entity: the associated `NSManagedObject` or `CoreStoreObject` type
     - parameter configurations: a list of `NSPersistentStore` configuration names to associate objects from. This parameter is required if multiple configurations contain the created `NSManagedObject` or `CoreStoreObject`'s entity type. Set to `nil` to use the default configuration.
     */
-    public init(_ entity: T.Type, _ configurations: [ModelConfiguration]) {
+    public init(_ entity: D.Type, _ configurations: [ModelConfiguration]) {
        
        self.init(entityClass: entity, configurations: configurations)
    }
@@ -132,14 +132,14 @@ public struct From<T: DynamicObject> {
    
    internal let findPersistentStores: (_ context: NSManagedObjectContext) -> [NSPersistentStore]?
    
-    internal init(entityClass: T.Type, configurations: [ModelConfiguration]?, findPersistentStores: @escaping (_ context: NSManagedObjectContext) -> [NSPersistentStore]?) {
+    internal init(entityClass: D.Type, configurations: [ModelConfiguration]?, findPersistentStores: @escaping (_ context: NSManagedObjectContext) -> [NSPersistentStore]?) {
        
        self.entityClass = entityClass
        self.configurations = configurations
        self.findPersistentStores = findPersistentStores
    }
    
-    internal func applyToFetchRequest<ResultType: NSFetchRequestResult>(_ fetchRequest: NSFetchRequest<ResultType>, context: NSManagedObjectContext, applyAffectedStores: Bool = true) -> Bool {
+    internal func applyToFetchRequest<ResultType>(_ fetchRequest: NSFetchRequest<ResultType>, context: NSManagedObjectContext, applyAffectedStores: Bool = true) -> Bool {
        
        fetchRequest.entity = context.parentStack!.entityDescription(for: EntityIdentifier(self.entityClass))!
        guard applyAffectedStores else {
@@ -157,7 +157,7 @@ public struct From<T: DynamicObject> {
        return false
    }
    
-    internal func applyAffectedStoresForFetchedRequest<U: NSFetchRequestResult>(_ fetchRequest: NSFetchRequest<U>, context: NSManagedObjectContext) -> Bool {
+    internal func applyAffectedStoresForFetchedRequest<U>(_ fetchRequest: NSFetchRequest<U>, context: NSManagedObjectContext) -> Bool {
        
        let stores = self.findPersistentStores(context)
        fetchRequest.affectedStores = stores
@@ -167,7 +167,7 @@ public struct From<T: DynamicObject> {
    
    // MARK: Private
    
-    private init(entityClass: T.Type, configurations: [ModelConfiguration]?) {
+    private init(entityClass: D.Type, configurations: [ModelConfiguration]?) {
        
        self.entityClass = entityClass
        self.configurations = configurations
--- a/Sources/GroupBy.swift
+++ b/Sources/GroupBy.swift
@@ -32,12 +32,7 @@ import CoreData
 /**
 The `GroupBy` clause specifies that the result of a query be grouped accoording to the specified key path.
 */
-public struct GroupBy: QueryClause, Hashable {
-    
-    /**
-     The list of key path strings to group results with
-     */
-    public let keyPaths: [KeyPath]
+public struct GroupBy<D: DynamicObject>: GroupByClause, QueryClause, Hashable {
    
    /**
     Initializes a `GroupBy` clause with an empty list of key path strings
@@ -53,7 +48,7 @@ public struct GroupBy: QueryClause, Hashable {
     - parameter keyPath: a key path string to group results with
     - parameter keyPaths: a series of key path strings to group results with
     */
-    public init(_ keyPath: KeyPath, _ keyPaths: KeyPath...) {
+    public init(_ keyPath: KeyPathString, _ keyPaths: KeyPathString...) {
        
        self.init([keyPath] + keyPaths)
    }
@@ -63,15 +58,22 @@ public struct GroupBy: QueryClause, Hashable {
     
     - parameter keyPaths: a list of key path strings to group results with
     */
-    public init(_ keyPaths: [KeyPath]) {
+    public init(_ keyPaths: [KeyPathString]) {
        
        self.keyPaths = keyPaths
    }
    
    
+    // MARK: GroupByClause
+    
+    public typealias ObjectType = D
+    
+    public let keyPaths: [KeyPathString]
+    
+    
    // MARK: QueryClause
    
-    public func applyToFetchRequest<ResultType: NSFetchRequestResult>(_ fetchRequest: NSFetchRequest<ResultType>) {
+    public func applyToFetchRequest<ResultType>(_ fetchRequest: NSFetchRequest<ResultType>) {
        
        if let keyPaths = fetchRequest.propertiesToGroupBy as? [String], keyPaths != self.keyPaths {
            
@@ -100,3 +102,78 @@ public struct GroupBy: QueryClause, Hashable {
        return (self.keyPaths as NSArray).hashValue
    }
 }
+
+public extension GroupBy where D: NSManagedObject {
+    
+    /**
+     Initializes a `GroupBy` clause with a key path
+     
+     - parameter keyPath: a key path to group results with
+     */
+    public init<T>(_ keyPath: KeyPath<D, T>) {
+        
+        self.init([keyPath._kvcKeyPathString!])
+    }
+}
+
+public extension GroupBy where D: CoreStoreObject {
+    
+    /**
+     Initializes a `GroupBy` clause with a key path
+     
+     - parameter keyPath: a key path to group results with
+     */
+    public init<T>(_ keyPath: KeyPath<D, ValueContainer<D>.Required<T>>) {
+        
+        self.init([D.meta[keyPath: keyPath].keyPath])
+    }
+    
+    /**
+     Initializes a `GroupBy` clause with a key path
+     
+     - parameter keyPath: a key path to group results with
+     */
+    public init<T>(_ keyPath: KeyPath<D, ValueContainer<D>.Optional<T>>) {
+        
+        self.init([D.meta[keyPath: keyPath].keyPath])
+    }
+    
+    /**
+     Initializes a `GroupBy` clause with a key path
+     
+     - parameter keyPath: a key path to group results with
+     */
+    public init<T>(_ keyPath: KeyPath<D, TransformableContainer<D>.Required<T>>) {
+        
+        self.init([D.meta[keyPath: keyPath].keyPath])
+    }
+    
+    /**
+     Initializes a `GroupBy` clause with a key path
+     
+     - parameter keyPath: a key path to group results with
+     */
+    public init<T>(_ keyPath: KeyPath<D, TransformableContainer<D>.Optional<T>>) {
+        
+        self.init([D.meta[keyPath: keyPath].keyPath])
+    }
+}
+
+
+// MARK: - GroupByClause
+
+/**
+ Abstracts the `GroupBy` clause for protocol utilities.
+ */
+public protocol GroupByClause {
+    
+    /**
+     The `DynamicObject` type associated with the clause
+     */
+    associatedtype ObjectType: DynamicObject
+    
+    /**
+     The list of key path strings to group results with
+     */
+    var keyPaths: [KeyPathString] { get }
+}
--- a/Sources/ICloudStore.swift
+++ b/Sources/ICloudStore.swift
@@ -425,8 +425,6 @@ public final class ICloudStore: CloudStorage {
     */
    public func cs_eraseStorageAndWait(soureModel: NSManagedObjectModel) throws {
        
-        // TODO: check if attached to persistent store
-        
        let cacheFileURL = self.cacheFileURL
        try autoreleasepool {
            
--- a/Sources/ImportableAttributeType.swift
+++ b/Sources/ImportableAttributeType.swift
@@ -57,625 +57,127 @@ import CoreGraphics
 
 In addition, `RawRepresentable` types whose `RawValue` already implements `ImportableAttributeType` only need to declare conformance to `ImportableAttributeType`.
 */
-public protocol ImportableAttributeType: QueryableAttributeType {
-    
-    /**
-     The `CoreDataNativeType` for this type.
-     */
-    associatedtype ImportableNativeType: QueryableNativeType
-    
-    /**
-     Creates an instance of this type from its `ImportableNativeType` value.
-     */
-    @inline(__always)
-    static func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Self?
-    
-    /**
-     Creates `ImportableNativeType` value from this instance.
-     */
-    @inline(__always)
-    func cs_toImportableNativeType() -> ImportableNativeType
-}
-
-
-// MARK: - EmptyableAttributeType
-
-/**
- `ImportableAttributeType`s that have a natural "empty" value. Example: `0` for `Int`, `""` for `String`.
- 
- - Discussion: Not all `ImportableAttributeType`s can have empty values. `URL`s and `Date`s for example have no obvious empty values.
- */
-public protocol EmptyableAttributeType: ImportableAttributeType {
-    
-    /**
-     Returns the default "empty" value for this type.
-     */
-    @inline(__always)
-    static func cs_emptyValue() -> Self
-}
+public protocol ImportableAttributeType: QueryableAttributeType {}


 // MARK: - Bool

-extension Bool: ImportableAttributeType, EmptyableAttributeType {
-    
-    // MARK: ImportableAttributeType
-    
-    public typealias ImportableNativeType = NSNumber
-    
-    @inline(__always)
-    public static func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Bool? {
-        
-        return self.cs_fromQueryableNativeType(value)
-    }
-    
-    @inline(__always)
-    public func cs_toImportableNativeType() -> ImportableNativeType {
-        
-        return self.cs_toQueryableNativeType()
-    }
-    
-    
-    // MARK: EmptyableAttributeType
-    
-    @inline(__always)
-    public static func cs_emptyValue() -> Bool {
-        
-        return false
-    }
-}
-
+extension Bool: ImportableAttributeType {}

 // MARK: - CGFloat

-extension CGFloat: ImportableAttributeType, EmptyableAttributeType {
-    
-    // MARK: ImportableAttributeType
-    
-    public typealias ImportableNativeType = NSNumber
-    
-    @inline(__always)
-    public static func cs_fromImportableNativeType(_ value: ImportableNativeType) -> CGFloat? {
-        
-        return self.cs_fromQueryableNativeType(value)
-    }
-    
-    @inline(__always)
-    public func cs_toImportableNativeType() -> ImportableNativeType {
-        
-        return self.cs_toQueryableNativeType()
-    }
-    
-    
-    // MARK: EmptyableAttributeType
-    
-    @inline(__always)
-    public static func cs_emptyValue() -> CGFloat {
-        
-        return 0
-    }
-}
+extension CGFloat: ImportableAttributeType {}


 // MARK: - Data

-extension Data: ImportableAttributeType, EmptyableAttributeType {
-    
-    // MARK: ImportableAttributeType
-    
-    public typealias ImportableNativeType = NSData
-    
-    @inline(__always)
-    public static func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Data? {
-        
-        return self.cs_fromQueryableNativeType(value)
-    }
-    
-    @inline(__always)
-    public func cs_toImportableNativeType() -> ImportableNativeType {
-        
-        return self.cs_toQueryableNativeType()
-    }
-    
-    
-    // MARK: EmptyableAttributeType
-    
-    @inline(__always)
-    public static func cs_emptyValue() -> Data {
-        
-        return Data()
-    }
-}
+extension Data: ImportableAttributeType {}


 // MARK: - Date

-extension Date: ImportableAttributeType {
-    
-    // MARK: ImportableAttributeType
-    
-    public typealias ImportableNativeType = NSDate
-    
-    @inline(__always)
-    public static func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Date? {
-        
-        return self.cs_fromQueryableNativeType(value)
-    }
-    
-    @inline(__always)
-    public func cs_toImportableNativeType() -> ImportableNativeType {
-        
-        return self.cs_toQueryableNativeType()
-    }
-}
+extension Date: ImportableAttributeType {}


 // MARK: - Double

-extension Double: ImportableAttributeType, EmptyableAttributeType {
-    
-    // MARK: ImportableAttributeType
-    
-    public typealias ImportableNativeType = NSNumber
-    
-    @inline(__always)
-    public static func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Double? {
-        
-        return self.cs_fromQueryableNativeType(value)
-    }
-    
-    @inline(__always)
-    public func cs_toImportableNativeType() -> ImportableNativeType {
-        
-        return self.cs_toQueryableNativeType()
-    }
-    
-    
-    // MARK: EmptyableAttributeType
-    
-    @inline(__always)
-    public static func cs_emptyValue() -> Double {
-        
-        return 0
-    }
-}
+extension Double: ImportableAttributeType {}


 // MARK: - Float

-extension Float: ImportableAttributeType, EmptyableAttributeType {
-    
-    // MARK: ImportableAttributeType
-    
-    public typealias ImportableNativeType = NSNumber
-    
-    @inline(__always)
-    public static func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Float? {
-        
-        return self.cs_fromQueryableNativeType(value)
-    }
-    
-    @inline(__always)
-    public func cs_toImportableNativeType() -> ImportableNativeType {
-        
-        return self.cs_toQueryableNativeType()
-    }
-    
-    
-    // MARK: EmptyableAttributeType
-    
-    @inline(__always)
-    public static func cs_emptyValue() -> Float {
-        
-        return 0
-    }
-}
+extension Float: ImportableAttributeType {}


 // MARK: - Int

-extension Int: ImportableAttributeType, EmptyableAttributeType {
-    
-    // MARK: ImportableAttributeType
-    
-    public typealias ImportableNativeType = NSNumber
-    
-    @inline(__always)
-    public static func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Int? {
-        
-        return self.cs_fromQueryableNativeType(value)
-    }
-    
-    @inline(__always)
-    public func cs_toImportableNativeType() -> ImportableNativeType {
-        
-        return self.cs_toQueryableNativeType()
-    }
-    
-    
-    // MARK: EmptyableAttributeType
-    
-    @inline(__always)
-    public static func cs_emptyValue() -> Int {
-        
-        return 0
-    }
-}
+extension Int: ImportableAttributeType {}


 // MARK: - Int8

-extension Int8: ImportableAttributeType, EmptyableAttributeType {
-    
-    // MARK: ImportableAttributeType
-    
-    public typealias ImportableNativeType = NSNumber
-    
-    @inline(__always)
-    public static func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Int8? {
-        
-        return self.cs_fromQueryableNativeType(value)
-    }
-    
-    @inline(__always)
-    public func cs_toImportableNativeType() -> ImportableNativeType {
-        
-        return self.cs_toQueryableNativeType()
-    }
-    
-    
-    // MARK: EmptyableAttributeType
-    
-    @inline(__always)
-    public static func cs_emptyValue() -> Int8 {
-        
-        return 0
-    }
-}
+extension Int8: ImportableAttributeType {}


 // MARK: - Int16

-extension Int16: ImportableAttributeType, EmptyableAttributeType {
-    
-    // MARK: ImportableAttributeType
-    
-    public typealias ImportableNativeType = NSNumber
-    
-    @inline(__always)
-    public static func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Int16? {
-        
-        return self.cs_fromQueryableNativeType(value)
-    }
-    
-    @inline(__always)
-    public func cs_toImportableNativeType() -> ImportableNativeType {
-        
-        return self.cs_toQueryableNativeType()
-    }
-    
-    
-    // MARK: EmptyableAttributeType
-    
-    @inline(__always)
-    public static func cs_emptyValue() -> Int16 {
-        
-        return 0
-    }
-}
+extension Int16: ImportableAttributeType {}


 // MARK: - Int32

-extension Int32: ImportableAttributeType, EmptyableAttributeType {
-    
-    // MARK: ImportableAttributeType
-    
-    public typealias ImportableNativeType = NSNumber
-    
-    @inline(__always)
-    public static func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Int32? {
-        
-        return self.cs_fromQueryableNativeType(value)
-    }
-    
-    @inline(__always)
-    public func cs_toImportableNativeType() -> ImportableNativeType {
-        
-        return self.cs_toQueryableNativeType()
-    }
-    
-    
-    // MARK: EmptyableAttributeType
-    
-    @inline(__always)
-    public static func cs_emptyValue() -> Int32 {
-        
-        return 0
-    }
-}
+extension Int32: ImportableAttributeType {}


 // MARK: - Int64

-extension Int64: ImportableAttributeType, EmptyableAttributeType {
-    
-    // MARK: ImportableAttributeType
-    
-    public typealias ImportableNativeType = NSNumber
-    
-    @inline(__always)
-    public static func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Int64? {
-        
-        return self.cs_fromQueryableNativeType(value)
-    }
-    
-    @inline(__always)
-    public func cs_toImportableNativeType() -> ImportableNativeType {
-        
-        return self.cs_toQueryableNativeType()
-    }
-    
-    
-    // MARK: EmptyableAttributeType
-    
-    @inline(__always)
-    public static func cs_emptyValue() -> Int64 {
-        
-        return 0
-    }
-}
+extension Int64: ImportableAttributeType {}


 // MARK: - NSData

-extension NSData: ImportableAttributeType, EmptyableAttributeType {
-    
-    // MARK: ImportableAttributeType
-    
-    public typealias ImportableNativeType = NSData
-    
-    @nonobjc @inline(__always)
-    public class func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Self? {
-        
-        return self.cs_fromQueryableNativeType(value)
-    }
-    
-    @nonobjc @inline(__always)
-    public func cs_toImportableNativeType() -> ImportableNativeType {
-        
-        return self.cs_toQueryableNativeType()
-    }
-    
-    
-    // MARK: EmptyableAttributeType
-    
-    @nonobjc @inline(__always)
-    public class func cs_emptyValue() -> Self {
-        
-        return self.init()
-    }
-}
+extension NSData: ImportableAttributeType {}


 // MARK: - NSDate

-extension NSDate: ImportableAttributeType {
-    
-    // MARK: ImportableAttributeType
-    
-    public typealias ImportableNativeType = NSDate
-    
-    @nonobjc @inline(__always)
-    public class func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Self? {
-        
-        return self.cs_fromQueryableNativeType(value)
-    }
-    
-    @nonobjc @inline(__always)
-    public func cs_toImportableNativeType() -> ImportableNativeType {
-        
-        return self.cs_toQueryableNativeType()
-    }
-}
+extension NSDate: ImportableAttributeType {}


 // MARK: - NSNumber

-extension NSNumber: ImportableAttributeType, EmptyableAttributeType {
-    
-    // MARK: ImportableAttributeType
-    
-    public typealias ImportableNativeType = NSNumber
-    
-    @nonobjc @inline(__always)
-    public class func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Self? {
-        
-        return self.cs_fromQueryableNativeType(value)
-    }
-    
-    @nonobjc @inline(__always)
-    public func cs_toImportableNativeType() -> ImportableNativeType {
-        
-        return self.cs_toQueryableNativeType()
-    }
-    
-    
-    // MARK: EmptyableAttributeType
-    
-    @nonobjc @inline(__always)
-    public class func cs_emptyValue() -> Self {
-        
-        return self.init()
-    }
-}
+extension NSNumber: ImportableAttributeType {}


 // MARK: - NSString

-extension NSString: ImportableAttributeType, EmptyableAttributeType {
-    
-    // MARK: ImportableAttributeType
-    
-    public typealias ImportableNativeType = NSString
-    
-    @nonobjc @inline(__always)
-    public class func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Self? {
-        
-        return self.cs_fromQueryableNativeType(value)
-    }
-    
-    @nonobjc @inline(__always)
-    public func cs_toImportableNativeType() -> ImportableNativeType {
-        
-        return self.cs_toQueryableNativeType()
-    }
-    
-    
-    // MARK: EmptyableAttributeType
-    
-    @nonobjc @inline(__always)
-    public class func cs_emptyValue() -> Self {
-        
-        return self.init()
-    }
-}
+extension NSString: ImportableAttributeType {}


 // MARK: - NSURL

-extension NSURL: ImportableAttributeType {
-    
-    // MARK: ImportableAttributeType
-    
-    public typealias ImportableNativeType = NSString
-    
-    @nonobjc @inline(__always)
-    public class func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Self? {
-        
-        return self.cs_fromQueryableNativeType(value)
-    }
-    
-    @nonobjc @inline(__always)
-    public func cs_toImportableNativeType() -> ImportableNativeType {
-        
-        return self.cs_toQueryableNativeType()
-    }
-}
+extension NSURL: ImportableAttributeType {}


 // MARK: - NSUUID

-extension NSUUID: ImportableAttributeType {
-    
-    // MARK: ImportableAttributeType
-    
-    public typealias ImportableNativeType = NSString
-    
-    @nonobjc @inline(__always)
-    public class func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Self? {
-        
-        return self.cs_fromQueryableNativeType(value)
-    }
-    
-    @nonobjc @inline(__always)
-    public func cs_toImportableNativeType() -> ImportableNativeType {
-        
-        return self.cs_toQueryableNativeType()
-    }
-}
+extension NSUUID: ImportableAttributeType {}


 // MARK: - String

-extension String: ImportableAttributeType, EmptyableAttributeType {
-    
-    // MARK: ImportableAttributeType
-    
-    public typealias ImportableNativeType = NSString
-    
-    @inline(__always)
-    public static func cs_fromImportableNativeType(_ value: ImportableNativeType) -> String? {
-        
-        return self.cs_fromQueryableNativeType(value)
-    }
-    
-    @inline(__always)
-    public func cs_toImportableNativeType() -> ImportableNativeType {
-        
-        return self.cs_toQueryableNativeType()
-    }
-    
-    
-    // MARK: EmptyableAttributeType
-    
-    @inline(__always)
-    public static func cs_emptyValue() -> String {
-        
-        return ""
-    }
-}
+extension String: ImportableAttributeType {}


 // MARK: - URL

-extension URL: ImportableAttributeType {
-    
-    // MARK: ImportableAttributeType
-    
-    public typealias ImportableNativeType = NSString
-    
-    @inline(__always)
-    public static func cs_fromImportableNativeType(_ value: ImportableNativeType) -> URL? {
-        
-        return self.cs_fromQueryableNativeType(value)
-    }
-    
-    @inline(__always)
-    public func cs_toImportableNativeType() -> ImportableNativeType {
-        
-        return self.cs_toQueryableNativeType()
-    }
-}
+extension URL: ImportableAttributeType {}


 // MARK: - UUID

-extension UUID: ImportableAttributeType {
-    
-    // MARK: ImportableAttributeType
-    
-    public typealias ImportableNativeType = NSString
-    
-    @inline(__always)
-    public static func cs_fromImportableNativeType(_ value: ImportableNativeType) -> UUID? {
-        
-        return self.cs_fromQueryableNativeType(value)
-    }
-    
-    @inline(__always)
-    public func cs_toImportableNativeType() -> ImportableNativeType {
-        
-        return self.cs_toQueryableNativeType()
-    }
-}
+extension UUID: ImportableAttributeType {}


 // MARK: - RawRepresentable

 extension RawRepresentable where RawValue: ImportableAttributeType {
    
-    public typealias ImportableNativeType = RawValue.ImportableNativeType
-    
+    /**
+     Creates an instance of this type from its `QueryableNativeType` value.
+     */
    @inline(__always)
-    public static func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Self? {
+    public static func cs_fromQueryableNativeType(_ value: QueryableNativeType) -> Self? {
        
-        return RawValue.cs_fromImportableNativeType(value).flatMap({ self.init(rawValue: $0) })
+        return RawValue.cs_fromQueryableNativeType(value).flatMap({ self.init(rawValue: $0) })
    }
    
+    /**
+     Creates `QueryableNativeType` value from this instance.
+     */
    @inline(__always)
-    public func cs_toImportableNativeType() -> ImportableNativeType {
+    public func cs_toQueryableNativeType() -> QueryableNativeType {
        
-        return self.rawValue.cs_toImportableNativeType()
+        return self.rawValue.cs_toQueryableNativeType()
    }
 }
--- a/Sources/ImportableUniqueObject.swift
+++ b/Sources/ImportableUniqueObject.swift
@@ -55,11 +55,6 @@ import CoreData
 */
 public protocol ImportableUniqueObject: ImportableObject {
    
-    /**
-     The data type for the import source. This is most commonly an json type, `NSDictionary`, or another external source such as `NSUserDefaults`.
-     */
-    associatedtype ImportSource
-    
    /**
     The data type for the entity's unique ID attribute
     */
@@ -123,6 +118,29 @@ public protocol ImportableUniqueObject: ImportableObject {

 // MARK: - ImportableUniqueObject (Default Implementations)

+public extension ImportableUniqueObject where UniqueIDType.QueryableNativeType: CoreDataNativeType {
+    
+    var uniqueIDValue: UniqueIDType {
+        
+        get {
+            
+            return self.cs_toRaw().getValue(
+                forKvcKey: type(of: self).uniqueIDKeyPath,
+                didGetValue: { UniqueIDType.cs_fromQueryableNativeType($0 as! UniqueIDType.QueryableNativeType)! }
+            )
+        }
+        set {
+            
+            self.cs_toRaw()
+                .setValue(
+                    newValue,
+                    forKvcKey: type(of: self).uniqueIDKeyPath,
+                    willSetValue: { ($0.cs_toQueryableNativeType() as CoreDataNativeType) }
+            )
+        }
+    }
+}
+
 public extension ImportableUniqueObject {
    
    static func shouldInsert(from source: ImportSource, in transaction: BaseDataTransaction) -> Bool {
@@ -173,29 +191,3 @@ public extension ImportableUniqueObject {
        try self.update(from: source, in: transaction)
    }
 }
-
-
-// MARK: - ImportableUniqueObject (Default Implementations)
-
-public extension ImportableUniqueObject where Self: DynamicObject {
-    
-    var uniqueIDValue: UniqueIDType {
-        
-        get {
-            
-            return self.cs_toRaw().getValue(
-                forKvcKey: type(of: self).uniqueIDKeyPath,
-                didGetValue: { UniqueIDType.cs_fromImportableNativeType($0 as! UniqueIDType.ImportableNativeType)! }
-            )
-        }
-        set {
-            
-            self.cs_toRaw()
-                .setValue(
-                    newValue,
-                    forKvcKey: type(of: self).uniqueIDKeyPath,
-                    willSetValue: { ($0.cs_toImportableNativeType() as! CoreDataNativeType) }
-                )
-        }
-    }
-}
--- a/Sources/InferredSchemaMappingProvider.swift
+++ b/Sources/InferredSchemaMappingProvider.swift
@@ -32,7 +32,7 @@ import Foundation
 /**
 A `SchemaMappingProvider` that tries to infer model migration between two `DynamicSchema` versions by searching all `xcmappingmodel`s from `Bundle.allBundles` or by relying on lightweight migration if possible. Throws an error if lightweight migration is impossible for the two `DynamicSchema`. This mapping is automatically used as a fallback mapping provider, even if no mapping providers are explicitly declared in the `StorageInterface`.
 */
-final class InferredSchemaMappingProvider: Hashable, SchemaMappingProvider {
+public final class InferredSchemaMappingProvider: Hashable, SchemaMappingProvider {
    
    // MARK: Equatable
    
--- a/Sources/Info.plist
+++ b/Sources/Info.plist
@@ -15,7 +15,7 @@
 	<key>CFBundlePackageType</key>
 	<string>FMWK</string>
 	<key>CFBundleShortVersionString</key>
-	<string>4.0.0</string>
+	<string>5.0.0</string>
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>
--- a/Sources/Into.swift
+++ b/Sources/Into.swift
@@ -39,12 +39,12 @@ import CoreData
 let person = transaction.create(Into<MyPersonEntity>("Configuration1"))
 ```
 */
-public struct Into<T: DynamicObject>: Hashable {
+public struct Into<D: DynamicObject>: Hashable {
    
    /**
     The associated `NSManagedObject` or `CoreStoreObject` entity class
     */
-    public let entityClass: T.Type
+    public let entityClass: D.Type
    
    /**
     The `NSPersistentStore` configuration name to associate objects from.
@@ -60,17 +60,17 @@ public struct Into<T: DynamicObject>: Hashable {
     */
    public init() {
        
-        self.init(entityClass: T.self, configuration: nil, inferStoreIfPossible: true)
+        self.init(entityClass: D.self, configuration: nil, inferStoreIfPossible: true)
    }
    
    /**
-     Initializes an `Into` clause with the specified entity type.
+     Initializes an `Into` clause with the specified entity type. This is useful for querying a subclass while binding the generic type with a base class.
     ```
-     let person = transaction.create(Into(MyPersonEntity.self))
+     let person = transaction.create(Into<MyPersonEntity>(MyEmployeeEntity.self))
     ```
-     - parameter entity: the `NSManagedObject` type to be created
+     - parameter entity: the `NSManagedObject` or `CoreStoreObject` type to be created
     */
-    public init(_ entity: T.Type) {
+    public init(_ entity: D.Type) {
        
        self.init(entityClass: entity, configuration: nil, inferStoreIfPossible: true)
    }
@@ -80,22 +80,22 @@ public struct Into<T: DynamicObject>: Hashable {
     ```
     let person = transaction.create(Into<MyPersonEntity>("Configuration1"))
     ```
-     - parameter configuration: the `NSPersistentStore` configuration name to associate the object to. This parameter is required if multiple configurations contain the created `NSManagedObject`'s entity type. Set to `nil` to use the default configuration.
+     - parameter configuration: the `NSPersistentStore` configuration name to associate the object to. This parameter is required if multiple configurations contain the created `NSManagedObject`'s or `CoreStoreObject`'s entity type. Set to `nil` to use the default configuration.
     */
    public init(_ configuration: ModelConfiguration) {
        
-        self.init(entityClass: T.self, configuration: configuration, inferStoreIfPossible: false)
+        self.init(entityClass: D.self, configuration: configuration, inferStoreIfPossible: false)
    }
    
    /**
-     Initializes an `Into` clause with the specified entity type and configuration.
+     Initializes an `Into` clause with the specified entity type and configuration. This is useful for querying a subclass while binding the generic type with a base class.
     ```
-     let person = transaction.create(Into(MyPersonEntity.self, "Configuration1"))
+     let person = transaction.create(Into<MyPersonEntity>(MyEmployeeEntity.self, "Configuration1"))
     ```
-     - parameter entity: the `NSManagedObject` type to be created
-     - parameter configuration: the `NSPersistentStore` configuration name to associate the object to. This parameter is required if multiple configurations contain the created `NSManagedObject`'s entity type. Set to `nil` to use the default configuration.
+     - parameter entity: the `NSManagedObject` or `CoreStoreObject` type to be created
+     - parameter configuration: the `NSPersistentStore` configuration name to associate the object to. This parameter is required if multiple configurations contain the created `NSManagedObject`'s or `CoreStoreObject`'s entity type. Set to `nil` to use the default configuration.
     */
-    public init(_ entity: T.Type, _ configuration: ModelConfiguration) {
+    public init(_ entity: D.Type, _ configuration: ModelConfiguration) {
        
        self.init(entityClass: entity, configuration: configuration, inferStoreIfPossible: false)
    }
@@ -103,7 +103,7 @@ public struct Into<T: DynamicObject>: Hashable {
    
    // MARK: Equatable
    
-    public static func == <U: DynamicObject, V: DynamicObject>(lhs: Into<U>, rhs: Into<V>) -> Bool {
+    public static func == <U, V>(lhs: Into<U>, rhs: Into<V>) -> Bool {
        
        return lhs.entityClass == rhs.entityClass
            && lhs.configuration == rhs.configuration
@@ -125,7 +125,7 @@ public struct Into<T: DynamicObject>: Hashable {
    
    internal let inferStoreIfPossible: Bool
    
-    internal init(entityClass: T.Type, configuration: ModelConfiguration, inferStoreIfPossible: Bool) {
+    internal init(entityClass: D.Type, configuration: ModelConfiguration, inferStoreIfPossible: Bool) {
        
        self.entityClass = entityClass
        self.configuration = configuration
--- a/Sources/KeyPath+Querying.swift
+++ b/Sources/KeyPath+Querying.swift
@@ -0,0 +1,611 @@
+//
+//  KeyPath+Querying.swift
+//  CoreStore
+//
+//  Copyright © 2017 John Rommel Estropia
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all
+//  copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+//  SOFTWARE.
+//
+
+import CoreData
+import Foundation
+
+
+// MARK: - KeyPath where Root: NSManagedObject, Value: QueryableAttributeType & Equatable
+
+/**
+ Creates a `Where` clause by comparing if a property is equal to a value
+ ```
+ let person = CoreStore.fetchOne(From<Person>().where(\.nickname == "John"))
+ ```
+ */
+public func == <O: NSManagedObject, V: QueryableAttributeType & Equatable>(_ keyPath: KeyPath<O, V>, _ value: V) -> Where<O> {
+    
+    return Where<O>(keyPath._kvcKeyPathString!, isEqualTo: value)
+}
+
+/**
+ Creates a `Where` clause by comparing if a property is not equal to a value
+ ```
+ let person = CoreStore.fetchOne(From<Person>().where(\.nickname != "John"))
+ ```
+ */
+public func != <O: NSManagedObject, V: QueryableAttributeType & Equatable>(_ keyPath: KeyPath<O, V>, _ value: V) -> Where<O> {
+    
+    return !Where<O>(keyPath._kvcKeyPathString!, isEqualTo: value)
+}
+
+/**
+ Creates a `Where` clause by checking if a sequence contains the value of a property
+ ```
+ let dog = CoreStore.fetchOne(From<Dog>().where(["Pluto", "Snoopy", "Scooby"] ~= \.nickname))
+ ```
+ */
+public func ~= <O: NSManagedObject, V: QueryableAttributeType & Equatable, S: Sequence>(_ sequence: S, _ keyPath: KeyPath<O, V>) -> Where<O> where S.Iterator.Element == V {
+    
+    return Where<O>(keyPath._kvcKeyPathString!, isMemberOf: sequence)
+}
+
+
+// MARK: - KeyPath where Root: NSManagedObject, Value: Optional<QueryableAttributeType & Equatable>
+
+/**
+ Creates a `Where` clause by comparing if a property is equal to a value
+ ```
+ let person = CoreStore.fetchOne(From<Person>().where(\.nickname == "John"))
+ ```
+ */
+public func == <O: NSManagedObject, V: QueryableAttributeType & Equatable>(_ keyPath: KeyPath<O, Optional<V>>, _ value: V?) -> Where<O> {
+    
+    return Where<O>(keyPath._kvcKeyPathString!, isEqualTo: value)
+}
+
+/**
+ Creates a `Where` clause by comparing if a property is not equal to a value
+ ```
+ let person = CoreStore.fetchOne(From<Person>().where(\.nickname != "John"))
+ ```
+ */
+public func != <O: NSManagedObject, V: QueryableAttributeType & Equatable>(_ keyPath: KeyPath<O, Optional<V>>, _ value: V?) -> Where<O> {
+    
+    return !Where<O>(keyPath._kvcKeyPathString!, isEqualTo: value)
+}
+
+/**
+ Creates a `Where` clause by checking if a sequence contains the value of a property
+ ```
+ let dog = CoreStore.fetchOne(From<Dog>().where(["Pluto", "Snoopy", "Scooby"] ~= \.nickname))
+ ```
+ */
+public func ~= <O: NSManagedObject, V: QueryableAttributeType & Equatable, S: Sequence>(_ sequence: S, _ keyPath: KeyPath<O, Optional<V>>) -> Where<O> where S.Iterator.Element == V {
+    
+    return Where<O>(keyPath._kvcKeyPathString!, isMemberOf: sequence)
+}
+
+
+// MARK: - KeyPath where Root: NSManagedObject, Value: QueryableAttributeType & Comparable
+
+/**
+ Creates a `Where` clause by comparing if a property is less than a value
+ ```
+ let person = CoreStore.fetchOne(From<Person>().where(\.age < 20))
+ ```
+ */
+public func < <O: NSManagedObject, V: QueryableAttributeType & Comparable>(_ keyPath: KeyPath<O, V>, _ value: V) -> Where<O> {
+    
+    return Where<O>("%K < %@", keyPath._kvcKeyPathString!, value)
+}
+
+/**
+ Creates a `Where` clause by comparing if a property is greater than a value
+ ```
+ let person = CoreStore.fetchOne(From<Person>().where(\.age > 20))
+ ```
+ */
+public func > <O: NSManagedObject, V: QueryableAttributeType & Comparable>(_ keyPath: KeyPath<O, V>, _ value: V) -> Where<O> {
+    
+    return Where<O>("%K > %@", keyPath._kvcKeyPathString!, value)
+}
+
+/**
+ Creates a `Where` clause by comparing if a property is less than or equal to a value
+ ```
+ let person = CoreStore.fetchOne(From<Person>().where(\.age <= 20))
+ ```
+ */
+public func <= <O: NSManagedObject, V: QueryableAttributeType & Comparable>(_ keyPath: KeyPath<O, V>, _ value: V) -> Where<O> {
+    
+    return Where<O>("%K <= %@", keyPath._kvcKeyPathString!, value)
+}
+
+/**
+ Creates a `Where` clause by comparing if a property is greater than or equal to a value
+ ```
+ let person = CoreStore.fetchOne(From<Person>().where(\.age >= 20))
+ ```
+ */
+public func >= <O: NSManagedObject, V: QueryableAttributeType & Comparable>(_ keyPath: KeyPath<O, V>, _ value: V) -> Where<O> {
+    
+    return Where<O>("%K >= %@", keyPath._kvcKeyPathString!, value)
+}
+
+
+// MARK: - KeyPath where Root: NSManagedObject, Value: Optional<QueryableAttributeType & Comparable>
+
+/**
+ Creates a `Where` clause by comparing if a property is less than a value
+ ```
+ let person = CoreStore.fetchOne(From<Person>().where(\.age < 20))
+ ```
+ */
+public func < <O: NSManagedObject, V: QueryableAttributeType & Comparable>(_ keyPath: KeyPath<O, Optional<V>>, _ value: V?) -> Where<O> {
+    
+    if let value = value {
+        
+        return Where<O>("%K < %@", keyPath._kvcKeyPathString!, value)
+    }
+    else {
+        
+        return Where<O>("%K < nil", keyPath._kvcKeyPathString!)
+    }
+}
+
+/**
+ Creates a `Where` clause by comparing if a property is greater than a value
+ ```
+ let person = CoreStore.fetchOne(From<Person>().where(\.age > 20))
+ ```
+ */
+public func > <O: NSManagedObject, V: QueryableAttributeType & Comparable>(_ keyPath: KeyPath<O, Optional<V>>, _ value: V?) -> Where<O> {
+    
+    if let value = value {
+        
+        return Where<O>("%K > %@", keyPath._kvcKeyPathString!, value)
+    }
+    else {
+        
+        return Where<O>("%K > nil", keyPath._kvcKeyPathString!)
+    }
+}
+
+/**
+ Creates a `Where` clause by comparing if a property is less than or equal to a value
+ ```
+ let person = CoreStore.fetchOne(From<Person>().where(\.age <= 20))
+ ```
+ */
+public func <= <O: NSManagedObject, V: QueryableAttributeType & Comparable>(_ keyPath: KeyPath<O, Optional<V>>, _ value: V?) -> Where<O> {
+    
+    if let value = value {
+        
+        return Where<O>("%K <= %@", keyPath._kvcKeyPathString!, value)
+    }
+    else {
+        
+        return Where<O>("%K <= nil", keyPath._kvcKeyPathString!)
+    }
+}
+
+/**
+ Creates a `Where` clause by comparing if a property is greater than or equal to a value
+ ```
+ let person = CoreStore.fetchOne(From<Person>().where(\.age >= 20))
+ ```
+ */
+public func >= <O: NSManagedObject, V: QueryableAttributeType & Comparable>(_ keyPath: KeyPath<O, Optional<V>>, _ value: V?) -> Where<O> {
+    
+    if let value = value {
+        
+        return Where<O>("%K >= %@", keyPath._kvcKeyPathString!, value)
+    }
+    else {
+        
+        return Where<O>("%K >= nil", keyPath._kvcKeyPathString!)
+    }
+}
+
+
+// MARK: - KeyPath where Root: NSManagedObject, Value: NSManagedObject
+
+/**
+ Creates a `Where` clause by comparing if a property is equal to a value
+ ```
+ let dog = CoreStore.fetchOne(From<Dog>().where(\.master == john))
+ ```
+ */
+public func == <O: NSManagedObject, D: NSManagedObject>(_ keyPath: KeyPath<O, D>, _ object: D) -> Where<O> {
+    
+    return Where<O>(keyPath._kvcKeyPathString!, isEqualTo: object)
+}
+
+/**
+ Creates a `Where` clause by comparing if a property is not equal to a value
+ ```
+ let dog = CoreStore.fetchOne(From<Dog>().where(\.master != john))
+ ```
+ */
+public func != <O: NSManagedObject, D: NSManagedObject>(_ keyPath: KeyPath<O, D>, _ object: D) -> Where<O> {
+    
+    return !Where<O>(keyPath._kvcKeyPathString!, isEqualTo: object)
+}
+
+/**
+ Creates a `Where` clause by checking if a sequence contains a value of a property
+ ```
+ let dog = CoreStore.fetchOne(From<Dog>().where([john, bob, joe] ~= \.master))
+ ```
+ */
+public func ~= <O: NSManagedObject, D: NSManagedObject, S: Sequence>(_ sequence: S, _ keyPath: KeyPath<O, D>) -> Where<O> where S.Iterator.Element == D {
+    
+    return Where<O>(keyPath._kvcKeyPathString!, isMemberOf: sequence)
+}
+
+/**
+ Creates a `Where` clause by comparing if a property is equal to a value
+ ```
+ let dog = CoreStore.fetchOne(From<Dog>().where(\.master == john))
+ ```
+ */
+public func == <O: NSManagedObject, D: NSManagedObject>(_ keyPath: KeyPath<O, D>, _ objectID: NSManagedObjectID) -> Where<O> {
+    
+    return Where<O>(keyPath._kvcKeyPathString!, isEqualTo: objectID)
+}
+
+/**
+ Creates a `Where` clause by comparing if a property is not equal to a value
+ ```
+ let dog = CoreStore.fetchOne(From<Dog>().where(\.master != john))
+ ```
+ */
+public func != <O: NSManagedObject, D: NSManagedObject>(_ keyPath: KeyPath<O, D>, _ objectID: NSManagedObjectID) -> Where<O> {
+    
+    return !Where<O>(keyPath._kvcKeyPathString!, isEqualTo: objectID)
+}
+
+/**
+ Creates a `Where` clause by checking if a sequence contains a value of a property
+ ```
+ let dog = CoreStore.fetchOne(From<Dog>().where([john, bob, joe] ~= \.master))
+ ```
+ */
+public func ~= <O: NSManagedObject, D: NSManagedObject, S: Sequence>(_ sequence: S, _ keyPath: KeyPath<O, D>) -> Where<O> where S.Iterator.Element == NSManagedObjectID {
+    
+    return Where<O>(keyPath._kvcKeyPathString!, isMemberOf: sequence)
+}
+
+
+// MARK: - KeyPath where Root: NSManagedObject, Value: Optional<NSManagedObject>
+
+/**
+ Creates a `Where` clause by comparing if a property is equal to a value
+ ```
+ let dog = CoreStore.fetchOne(From<Dog>().where(\.master == john))
+ ```
+ */
+public func == <O: NSManagedObject, D: NSManagedObject>(_ keyPath: KeyPath<O, Optional<D>>, _ object: D?) -> Where<O> {
+    
+    return Where<O>(keyPath._kvcKeyPathString!, isEqualTo: object)
+}
+
+/**
+ Creates a `Where` clause by comparing if a property is not equal to a value
+ ```
+ let dog = CoreStore.fetchOne(From<Dog>().where(\.master != john))
+ ```
+ */
+public func != <O: NSManagedObject, D: NSManagedObject>(_ keyPath: KeyPath<O, Optional<D>>, _ object: D?) -> Where<O> {
+    
+    return !Where<O>(keyPath._kvcKeyPathString!, isEqualTo: object)
+}
+
+/**
+ Creates a `Where` clause by checking if a sequence contains a value of a property
+ ```
+ let dog = CoreStore.fetchOne(From<Dog>().where([john, bob, joe] ~= \.master))
+ ```
+ */
+public func ~= <O: NSManagedObject, D: NSManagedObject, S: Sequence>(_ sequence: S, _ keyPath: KeyPath<O, Optional<D>>) -> Where<O> where S.Iterator.Element == D {
+    
+    return Where<O>(keyPath._kvcKeyPathString!, isMemberOf: sequence)
+}
+
+/**
+ Creates a `Where` clause by comparing if a property is equal to a value
+ ```
+ let dog = CoreStore.fetchOne(From<Dog>().where(\.master == john))
+ ```
+ */
+public func == <O: NSManagedObject, D: NSManagedObject>(_ keyPath: KeyPath<O, Optional<D>>, _ objectID: NSManagedObjectID) -> Where<O> {
+    
+    return Where<O>(keyPath._kvcKeyPathString!, isEqualTo: objectID)
+}
+
+/**
+ Creates a `Where` clause by comparing if a property is not equal to a value
+ ```
+ let dog = CoreStore.fetchOne(From<Dog>().where(\.master != john))
+ ```
+ */
+public func != <O: NSManagedObject, D: NSManagedObject>(_ keyPath: KeyPath<O, Optional<D>>, _ objectID: NSManagedObjectID) -> Where<O> {
+    
+    return !Where<O>(keyPath._kvcKeyPathString!, isEqualTo: objectID)
+}
+
+/**
+ Creates a `Where` clause by checking if a sequence contains a value of a property
+ ```
+ let dog = CoreStore.fetchOne(From<Dog>().where([john, bob, joe] ~= \.master))
+ ```
+ */
+public func ~= <O: NSManagedObject, D: NSManagedObject, S: Sequence>(_ sequence: S, _ keyPath: KeyPath<O, Optional<D>>) -> Where<O> where S.Iterator.Element == NSManagedObjectID {
+    
+    return Where<O>(keyPath._kvcKeyPathString!, isMemberOf: sequence)
+}
+
+
+// MARK: - KeyPath where Root: CoreStoreObject, Value: ValueContainer<Root>.Required<QueryableAttributeType & Equatable>
+
+/**
+ Creates a `Where` clause by comparing if a property is equal to a value
+ ```
+ let person = CoreStore.fetchOne(From<Person>().where(\.nickname == "John"))
+ ```
+ */
+public func == <O, V>(_ keyPath: KeyPath<O, ValueContainer<O>.Required<V>>, _ value: V) -> Where<O> {
+
+    return Where<O>(O.meta[keyPath: keyPath].keyPath, isEqualTo: value)
+}
+
+/**
+ Creates a `Where` clause by comparing if a property is not equal to a value
+ ```
+ let person = CoreStore.fetchOne(From<Person>().where(\.nickname != "John"))
+ ```
+ */
+public func != <O, V>(_ keyPath: KeyPath<O, ValueContainer<O>.Required<V>>, _ value: V) -> Where<O> {
+    
+    return !Where<O>(O.meta[keyPath: keyPath].keyPath, isEqualTo: value)
+}
+
+/**
+ Creates a `Where` clause by checking if a sequence contains the value of a property
+ ```
+ let dog = CoreStore.fetchOne(From<Dog>().where(["Pluto", "Snoopy", "Scooby"] ~= \.nickname))
+ ```
+ */
+public func ~= <O, V, S: Sequence>(_ sequence: S, _ keyPath: KeyPath<O, ValueContainer<O>.Required<V>>) -> Where<O> where S.Iterator.Element == V {
+    
+    return Where<O>(O.meta[keyPath: keyPath].keyPath, isMemberOf: sequence)
+}
+
+
+// MARK: - KeyPath where Root: CoreStoreObject, Value: ValueContainer<Root>.Optional<QueryableAttributeType & Equatable>
+
+/**
+ Creates a `Where` clause by comparing if a property is equal to a value
+ ```
+ let person = CoreStore.fetchOne(From<Person>().where(\.nickname == "John"))
+ ```
+ */
+public func == <O, V>(_ keyPath: KeyPath<O, ValueContainer<O>.Optional<V>>, _ value: V?) -> Where<O> {
+    
+    return Where<O>(O.meta[keyPath: keyPath].keyPath, isEqualTo: value)
+}
+
+/**
+ Creates a `Where` clause by comparing if a property is not equal to a value
+ ```
+ let person = CoreStore.fetchOne(From<Person>().where(\.nickname != "John"))
+ ```
+ */
+public func != <O, V>(_ keyPath: KeyPath<O, ValueContainer<O>.Optional<V>>, _ value: V?) -> Where<O> {
+    
+    return !Where<O>(O.meta[keyPath: keyPath].keyPath, isEqualTo: value)
+}
+
+/**
+ Creates a `Where` clause by checking if a sequence contains the value of a property
+ ```
+ let dog = CoreStore.fetchOne(From<Dog>().where(["Pluto", "Snoopy", "Scooby"] ~= \.nickname))
+ ```
+ */
+public func ~= <O, V, S: Sequence>(_ sequence: S, _ keyPath: KeyPath<O, ValueContainer<O>.Optional<V>>) -> Where<O> where S.Iterator.Element == V {
+    
+    return Where<O>(O.meta[keyPath: keyPath].keyPath, isMemberOf: sequence)
+}
+
+
+// MARK: - KeyPath where Root: CoreStoreObject, Value: ValueContainer<Root>.Required<QueryableAttributeType & Comparable>
+
+/**
+ Creates a `Where` clause by comparing if a property is less than a value
+ ```
+ let person = CoreStore.fetchOne(From<Person>().where(\.age < 20))
+ ```
+ */
+public func < <O, V: Comparable>(_ keyPath: KeyPath<O, ValueContainer<O>.Required<V>>, _ value: V) -> Where<O> {
+    
+    return Where<O>("%K < %@", O.meta[keyPath: keyPath].keyPath, value)
+}
+
+/**
+ Creates a `Where` clause by comparing if a property is greater than a value
+ ```
+ let person = CoreStore.fetchOne(From<Person>().where(\.age > 20))
+ ```
+ */
+public func > <O, V: Comparable>(_ keyPath: KeyPath<O, ValueContainer<O>.Required<V>>, _ value: V) -> Where<O> {
+    
+    return Where<O>("%K > %@", O.meta[keyPath: keyPath].keyPath, value)
+}
+
+/**
+ Creates a `Where` clause by comparing if a property is less than or equal to a value
+ ```
+ let person = CoreStore.fetchOne(From<Person>().where(\.age <= 20))
+ ```
+ */
+public func <= <O, V: Comparable>(_ keyPath: KeyPath<O, ValueContainer<O>.Required<V>>, _ value: V) -> Where<O> {
+    
+    return Where<O>("%K <= %@", O.meta[keyPath: keyPath].keyPath, value)
+}
+
+/**
+ Creates a `Where` clause by comparing if a property is greater than or equal to a value
+ ```
+ let person = CoreStore.fetchOne(From<Person>().where(\.age >= 20))
+ ```
+ */
+public func >= <O, V: Comparable>(_ keyPath: KeyPath<O, ValueContainer<O>.Required<V>>, _ value: V) -> Where<O> {
+    
+    return Where<O>("%K >= %@", O.meta[keyPath: keyPath].keyPath, value)
+}
+
+
+// MARK: - KeyPath where Root: CoreStoreObject, Value: ValueContainer<Root>.Optional<QueryableAttributeType & Comparable>
+
+/**
+ Creates a `Where` clause by comparing if a property is less than a value
+ ```
+ let person = CoreStore.fetchOne(From<Person>().where(\.age < 20))
+ ```
+ */
+public func < <O, V>(_ keyPath: KeyPath<O, ValueContainer<O>.Optional<V>>, _ value: V?) -> Where<O> {
+    
+    if let value = value {
+
+        return Where<O>("%K < %@", O.meta[keyPath: keyPath].keyPath, value)
+    }
+    else {
+
+        return Where<O>("%K < nil", O.meta[keyPath: keyPath].keyPath)
+    }
+}
+
+/**
+ Creates a `Where` clause by comparing if a property is greater than a value
+ ```
+ let person = CoreStore.fetchOne(From<Person>().where(\.age > 20))
+ ```
+ */
+public func > <O, V>(_ keyPath: KeyPath<O, ValueContainer<O>.Optional<V>>, _ value: V?) -> Where<O> {
+    
+    if let value = value {
+        
+        return Where<O>("%K > %@", O.meta[keyPath: keyPath].keyPath, value)
+    }
+    else {
+        
+        return Where<O>("%K > nil", O.meta[keyPath: keyPath].keyPath)
+    }
+}
+
+/**
+ Creates a `Where` clause by comparing if a property is less than or equal to a value
+ ```
+ let person = CoreStore.fetchOne(From<Person>().where(\.age <= 20))
+ ```
+ */
+public func <= <O, V>(_ keyPath: KeyPath<O, ValueContainer<O>.Optional<V>>, _ value: V?) -> Where<O> {
+    
+    if let value = value {
+        
+        return Where<O>("%K <= %@", O.meta[keyPath: keyPath].keyPath, value)
+    }
+    else {
+        
+        return Where<O>("%K <= nil", O.meta[keyPath: keyPath].keyPath)
+    }
+}
+
+/**
+ Creates a `Where` clause by comparing if a property is greater than or equal to a value
+ ```
+ let person = CoreStore.fetchOne(From<Person>().where(\.age >= 20))
+ ```
+ */
+public func >= <O, V>(_ keyPath: KeyPath<O, ValueContainer<O>.Optional<V>>, _ value: V?) -> Where<O> {
+    
+    if let value = value {
+        
+        return Where<O>("%K >= %@", O.meta[keyPath: keyPath].keyPath, value)
+    }
+    else {
+        
+        return Where<O>("%K >= nil", O.meta[keyPath: keyPath].keyPath)
+    }
+}
+
+
+// MARK: - KeyPath where Root: CoreStoreObject, Value: RelationshipContainer<Root>.ToOne<CoreStoreObject>
+
+/**
+ Creates a `Where` clause by comparing if a property is equal to a value
+ ```
+ let dog = CoreStore.fetchOne(From<Dog>().where(\.master == john))
+ ```
+ */
+public func == <O, D>(_ keyPath: KeyPath<O, RelationshipContainer<O>.ToOne<D>>, _ object: D) -> Where<O> {
+    
+    return Where<O>(O.meta[keyPath: keyPath].keyPath, isEqualTo: object)
+}
+
+/**
+ Creates a `Where` clause by comparing if a property is equal to a value
+ ```
+ let dog = CoreStore.fetchOne(From<Dog>().where(\.master == john))
+ ```
+ */
+public func == <O, D>(_ keyPath: KeyPath<O, RelationshipContainer<O>.ToOne<D>>, _ object: D?) -> Where<O> {
+    
+    return Where<O>(O.meta[keyPath: keyPath].keyPath, isEqualTo: object)
+}
+
+/**
+ Creates a `Where` clause by comparing if a property is not equal to a value
+ ```
+ let dog = CoreStore.fetchOne(From<Dog>().where(\.master != john))
+ ```
+ */
+public func != <O, D>(_ keyPath: KeyPath<O, RelationshipContainer<O>.ToOne<D>>, _ object: D) -> Where<O> {
+    
+    return !Where<O>(O.meta[keyPath: keyPath].keyPath, isEqualTo: object)
+}
+
+/**
+ Creates a `Where` clause by comparing if a property is not equal to a value
+ ```
+ let dog = CoreStore.fetchOne(From<Dog>().where(\.master != john))
+ ```
+ */
+public func != <O, D>(_ keyPath: KeyPath<O, RelationshipContainer<O>.ToOne<D>>, _ object: D?) -> Where<O> {
+    
+    return !Where<O>(O.meta[keyPath: keyPath].keyPath, isEqualTo: object)
+}
+
+/**
+ Creates a `Where` clause by checking if a sequence contains a value of a property
+ ```
+ let dog = CoreStore.fetchOne(From<Dog>().where([john, bob, joe] ~= \.master))
+ ```
+ */
+public func ~= <O, D, S: Sequence>(_ sequence: S, _ keyPath: KeyPath<O, RelationshipContainer<O>.ToOne<D>>) -> Where<O> where S.Iterator.Element == D {
+    
+    return Where<O>(O.meta[keyPath: keyPath].keyPath, isMemberOf: sequence)
+}
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
John Rommel Estropia	4b9fddad6a	Merge branch 'develop'	2017-12-29 01:09:07 +09:00
John Rommel Estropia	fbe7bd7bf8	update podfile	2017-12-29 00:53:48 +09:00
John Rommel Estropia	15edabdbb5	changed keyPath string utility to use String initializer	2017-12-29 00:05:11 +09:00
John Rommel Estropia	f447bcfb95	Merge branch 'develop' into prototype/Swift_4_0 # Conflicts: # CoreStore.podspec # Sources/DataStack+Migration.swift # Sources/Info.plist	2017-11-19 15:35:29 +09:00
John Rommel Estropia	15e5e4fdf6	delete shm file after converting to DELETE journal mode	2017-11-19 15:34:09 +09:00
John Rommel Estropia	583c6b7249	minor code cleanup	2017-11-19 13:49:21 +09:00
John Rommel Estropia	18b933957e	version bump	2017-11-16 02:28:18 +09:00
John Rommel Estropia	2c7039232e	merge sqlite journal files before migration	2017-11-16 02:27:06 +09:00
John Rommel Estropia	d3b3b5ff4a	added fake progress for lightweight migrations	2017-11-16 02:26:56 +09:00
John Rommel Estropia	d90e8d1303	force true lightweight migration	2017-11-16 02:26:44 +09:00
John Rommel Estropia	b55dd13dff	merge sqlite journal files before migration	2017-11-15 23:50:10 +09:00
John Rommel Estropia	66dd5b6f27	added fake progress for lightweight migrations	2017-11-13 02:44:26 +09:00
John Estropia	49c4b770eb	WIP: Readme	2017-11-10 19:19:48 +09:00
John Rommel Estropia	662aaa1e75	force true lightweight migration	2017-11-10 02:48:37 +09:00
John Rommel Estropia	dd4e47d7f9	revert null overloads, remove optional objectIDs as condition	2017-11-09 23:26:53 +09:00
John Estropia	9ea5073bc8	Merge branch 'master' into prototype/Swift_4_0 # Conflicts: # CoreStore.podspec # Sources/Info.plist	2017-11-09 19:52:29 +09:00
John Estropia	e314db8f56	version bump	2017-11-09 19:45:21 +09:00
John Estropia	48d936d068	Fix regression for ARC bugfix (fixes #221 )	2017-11-09 19:44:27 +09:00
John Estropia	b2ff8a15ef	add query overloads to == so comparison with nil don't confuse the compiler	2017-11-09 19:27:56 +09:00
John Estropia	8a4d1cd7c6	fix demo app warnings	2017-11-09 19:27:05 +09:00
John Rommel Estropia	8ce26c213d	more source docs, deprecated some Where clause utilities	2017-11-04 10:37:54 +09:00
John Estropia	f3816b9abf	update for Xcode 9.1	2017-11-01 19:49:42 +09:00
John Estropia	21961780d4	force dynamic typing on DynamicObject.Type to mitigate optimization issues	2017-11-01 19:38:38 +09:00
John Rommel Estropia	305e2b61a0	fix compile errors for Xcode 9.1 beta	2017-11-01 19:37:53 +09:00
John Estropia	0430f66240	force dynamic typing on DynamicObject.Type to mitigate optimization issues	2017-11-01 11:33:41 +09:00
John Estropia	65772edd00	Merge pull request #208 from volodg/prototype/Swift_4_0 (Xcode 9.1) fix compile error:	2017-10-29 18:55:13 +09:00
John Rommel Estropia	02d7870d75	fix compile errors for Xcode 9.1 beta	2017-10-29 15:20:58 +09:00
John Rommel Estropia	aca1709e13	WIP: documentation	2017-10-29 15:06:57 +09:00
John Rommel Estropia	b6ee0b014f	WIP: documentations	2017-10-24 00:31:27 +09:00
John Estropia	e37186da73	Merge branch 'prototype/Swift_3_2' into prototype/Swift_4_0 # Conflicts: # CoreStore.podspec # Sources/Info.plist	2017-10-17 13:42:04 +09:00
John Estropia	588fa35c84	version bump	2017-10-17 13:39:57 +09:00
John Estropia	f6614cda66	Merge branch 'develop'	2017-10-17 13:39:20 +09:00
John Estropia	639574d8c2	remove inline casts because optimized builds seem to trip on them	2017-10-17 13:38:25 +09:00
John Rommel Estropia	094703155c	Merge branch 'master' into prototype/Swift_4_0 # Conflicts: # .swift-version	2017-10-13 08:14:20 +09:00
John Rommel Estropia	6dd254e713	Merge branch 'prototype/Swift_3_2' into prototype/Swift_4_0 # Conflicts: # CoreStore.podspec # Sources/Info.plist	2017-10-13 08:10:56 +09:00
John Rommel Estropia	204025721c	version bump	2017-10-13 08:10:26 +09:00
John Rommel Estropia	27ffc1d225	Merge branch 'develop' # Conflicts: # CoreStore.podspec # Sources/Info.plist	2017-10-13 08:01:30 +09:00
John Rommel Estropia	ba6f0c39d5	swift version 3.2	2017-10-13 08:00:39 +09:00
John Rommel Estropia	ab2eac8f6c	Swift 3.2 README update	2017-10-13 07:58:37 +09:00
John Rommel Estropia	f460a0b30f	CI: test demo app	2017-10-12 01:10:08 +09:00
John Rommel Estropia	50bc3ace06	travis	2017-10-12 00:02:39 +09:00
John Rommel Estropia	d2ddf2002f	version update	2017-10-11 22:40:27 +09:00
John Rommel Estropia	b4117eeb02	updated documentation (fixes #198 )	2017-10-11 07:50:24 +09:00
Vladimir	106275b2dd	fix compile error: inheritance from 'AnyObject'	2017-10-07 12:21:27 +08:00
John Rommel Estropia	08d9298be0	Merge branch 'prototype/Swift_4_0' into prototype/queryBuilders # Conflicts: # Sources/OrderBy.swift	2017-10-07 01:13:30 +09:00
John Rommel Estropia	ff0c4d94fc	Merge branch 'prototype/Swift_3_2' into prototype/Swift_4_0	2017-10-07 01:10:28 +09:00
John Rommel Estropia	50e50c0613	Merge branch 'develop' into prototype/Swift_3_2	2017-10-07 01:07:09 +09:00
John Rommel Estropia	5c8a0e425b	version bump	2017-10-07 00:59:37 +09:00
John Rommel Estropia	03b71caf7e	Merge branch 'develop'	2017-10-07 00:58:04 +09:00
John Rommel Estropia	7ff29d6086	version bump	2017-10-07 00:57:41 +09:00
John Rommel Estropia	8d86425875	always create subclass type from cs_rawObject	2017-10-07 00:56:19 +09:00
John Estropia	97242d9726	added type-erasers for CoreStoreObject property containers	2017-10-02 12:00:45 +09:00
John Estropia	780ff4e60b	fix compile errors	2017-10-02 11:10:28 +09:00
John Estropia	11743dfb5f	oops	2017-10-02 11:08:44 +09:00
John Estropia	9eaf85388c	relax generic type requirements for some Where utilities	2017-10-02 10:33:59 +09:00
John Rommel Estropia	06635c9d2f	orderby utilities	2017-10-02 08:04:28 +09:00
John Rommel Estropia	1d2eef7894	revert	2017-10-01 01:01:10 +09:00
John Rommel Estropia	85ed815ec2	WIP: more chain clause builder utilities	2017-10-01 00:45:21 +09:00
John Estropia	096e5493a6	WIP: protocol cleanup	2017-09-29 20:33:10 +09:00
John Estropia	0aa8c03424	Merge pull request #205 from jannon/case-insensitive-orderby add case-insensitive sortkeys	2017-09-29 19:38:36 +09:00
John Estropia	4ead3c34dd	delete errant operator	2017-09-26 11:59:28 +09:00
John Rommel Estropia	645034dde5	keyPath utilities for SectionBy clauses	2017-09-24 10:38:17 +09:00
John Rommel Estropia	85706a3c57	version bump	2017-09-22 23:43:19 +09:00
John Rommel Estropia	c5ae4606b9	move cocoapods.yml	2017-09-22 23:41:07 +09:00
John Rommel Estropia	fa682215c5	version bump	2017-09-22 23:26:15 +09:00
John Rommel Estropia	e814733ae9	Merge branch 'prototype/Swift_4_0' into prototype/queryBuilders # Conflicts: # Sources/DynamicObject.swift	2017-09-22 23:20:16 +09:00
John Rommel Estropia	e2236698fa	Merge branch 'prototype/Swift_3_2' into prototype/Swift_4_0	2017-09-22 23:18:38 +09:00
John Rommel Estropia	be5da632b3	fix segmentation fault	2017-09-22 23:18:25 +09:00
John Estropia	dc73cd6dd9	added a yml file for pod try (#200 )	2017-09-22 15:48:02 +09:00
John Rommel Estropia	7beb3bec75	rename methods	2017-09-22 08:02:13 +09:00
Jannon Frank	53100b202d	add case-insensitive sortkeys	2017-09-21 11:38:29 -07:00
John Rommel Estropia	cc84b1f8bd	minor	2017-09-22 01:00:03 +09:00
John Rommel Estropia	474f52ed2b	alow nil comparison for relationship keypaths	2017-09-22 00:30:02 +09:00
John Rommel Estropia	16225fc4c6	allow optionals in relationship keyPaths	2017-09-22 00:20:55 +09:00
John Rommel Estropia	03bb7619da	added queryBuilder utilities for clause sequences	2017-09-22 00:08:01 +09:00
John Rommel Estropia	1bfb7451c3	keyPath utilities for Select queries	2017-09-21 07:56:02 +09:00
John Rommel Estropia	3e082d5ed4	queryBuilders for list monitors	2017-09-20 00:45:38 +09:00
John Rommel Estropia	e45d67252c	CoreStore querying utilities	2017-09-20 00:24:03 +09:00
John Rommel Estropia	3d427c29c4	added required settings	2017-09-20 00:09:57 +09:00
John Rommel Estropia	1068517b94	Merge branch 'prototype/queryBuilders' of github.com:JohnEstropia/CoreStore into prototype/queryBuilders	2017-09-20 00:02:36 +09:00
John Estropia	0d23ce1598	fix Demo app compiler errors	2017-09-19 16:22:59 +09:00
John Estropia	fd1ce20863	set swift version	2017-09-19 16:04:26 +09:00
John Estropia	2c5fa63f40	revert	2017-09-19 15:55:51 +09:00
John Estropia	78e43a37a5	fix OSX compiler errors	2017-09-19 15:54:15 +09:00
John Rommel Estropia	fde85a9743	Merge branch 'prototype/Swift_4_0' into prototype/queryBuilders	2017-09-17 01:15:55 +09:00
John Rommel Estropia	dbbc0adae5	Merge branch 'prototype/Swift_3_2' into prototype/Swift_4_0	2017-09-17 01:10:11 +09:00
John Rommel Estropia	2a62770552	Merge branch 'develop' into prototype/Swift_3_2	2017-09-10 12:31:30 +09:00
John Rommel Estropia	f436b26e8e	allow compound keypaths in Select terms	2017-09-08 01:28:24 +09:00
John Rommel Estropia	c566226747	Merge branch 'prototype/Swift_4_0' into prototype/queryBuilders	2017-08-31 23:50:12 +09:00
John Rommel Estropia	cd405e038e	updated demo app	2017-08-31 23:00:17 +09:00
John Estropia	92a37053b0	Merge branch 'prototype/Swift_3_2' into prototype/Swift_4_0	2017-08-31 18:33:28 +09:00
John Estropia	0b57cff27d	Merge branch 'develop' into prototype/Swift_3_2 # Conflicts: # Sources/DynamicSchema+Convenience.swift	2017-08-31 18:33:12 +09:00
John Estropia	3ebc44b546	optimize redundant casting in printCoreStoreSchema()	2017-08-31 18:28:23 +09:00
John Estropia	68f1027ba7	fix code misuse in readme	2017-08-31 17:55:10 +09:00
John Rommel Estropia	005729be85	Merge branch 'prototype/Swift_4_0' into prototype/queryBuilders	2017-08-26 14:29:16 +09:00
John Estropia	8bac4aa901	Fixed Xcode 9 beta 6 errors	2017-08-24 10:11:12 +09:00
John Estropia	da170c7e51	Fixed Xcode 9 beta 6 errors	2017-08-23 18:40:06 +09:00
John Estropia	211e69023e	version bump	2017-08-23 12:59:36 +09:00
John Rommel Estropia	2912dcf010	iOS 11 fixed the NSFetchRequest.affectedStores bug	2017-08-23 12:55:02 +09:00
John Rommel Estropia	3e00a3da06	fix demo app errors	2017-08-17 09:24:33 +09:00
John Rommel Estropia	a33e248828	Merge branch 'prototype/Swift_4_0' into prototype/queryBuilders # Conflicts: # Sources/NSManagedObjectContext+Querying.swift	2017-08-16 21:09:09 +09:00
John Rommel Estropia	75e14fbbed	Merge branch 'prototype/Swift_3_2' into prototype/Swift_4_0 # Conflicts: # Sources/NSManagedObjectContext+Querying.swift	2017-08-16 21:08:33 +09:00
John Rommel Estropia	9922deac4d	Merge branch 'develop' into prototype/Swift_3_2 # Conflicts: # Sources/AttributeProtocol.swift # Sources/DynamicSchema+Convenience.swift # Sources/ImportableAttributeType.swift # Sources/Relationship.swift # Sources/RelationshipProtocol.swift # Sources/Transformable.swift # Sources/Value.swift	2017-08-16 21:07:34 +09:00
John Rommel Estropia	86be046c9f	updated podspec	2017-08-16 20:43:10 +09:00
John Rommel Estropia	0f10bc3349	version bump	2017-08-16 20:26:22 +09:00
John Rommel Estropia	9685f0aef2	#191	2017-08-16 20:21:26 +09:00
John Estropia	1e51000155	Merge pull request #191 from sidmani/prototype/Swift_4_0 Corrected type-checking in fetchExisting to preserve input type	2017-08-16 20:20:23 +09:00
John Rommel Estropia	3bd459bb1a	updated docs	2017-08-16 20:09:09 +09:00
Sid Mani	c89bc3c227	Corrected type-checking in fetchExisting to preserve input type	2017-08-16 00:36:06 -07:00
John Rommel Estropia	0f405a50aa	WIP: KeyPath utilities for all clauses	2017-08-10 00:42:29 +09:00
John Estropia	f5e1643ef7	minor cleanup	2017-08-10 00:10:15 +09:00
John Rommel Estropia	f62137fb58	rename file	2017-08-10 00:10:08 +09:00
John Rommel Estropia	37fbedd799	WIP: keypath utilities for all raw clauses	2017-08-09 08:11:41 +09:00
John Rommel Estropia	28b43f33fa	Value.Required now requires an "initial:" parameter. For previous CoreStoreObject users, use the appropriate empty value for your existing properties (0 for numeric types, false for Bool, "" for String)	2017-08-08 18:36:25 +09:00
John Rommel Estropia	81a72f29ea	Merge branch 'prototype/Swift_4_0' into prototype/queryBuilders	2017-08-08 08:02:17 +09:00
John Rommel Estropia	f7aaf4fb2a	Fix compile errors for Xcode 9 beta 5	2017-08-08 08:02:05 +09:00
John Rommel Estropia	a52acf2ebd	Merge branch 'prototype/Swift_3_2' into prototype/Swift_4_0	2017-08-08 07:56:32 +09:00
John Rommel Estropia	74c64619c3	Fix compile error for Xcode 9 beta 5	2017-08-08 07:56:21 +09:00
John Rommel Estropia	4a5bc6450b	complete query utilities	2017-08-08 07:36:52 +09:00
John Rommel Estropia	fe69e7c6c4	Merge branch 'prototype/Swift_4_0' into prototype/queryBuilders # Conflicts: # CoreStore.xcodeproj/project.pbxproj # Sources/Relationship.swift # Sources/Value.swift	2017-08-05 23:02:00 +09:00
John Rommel Estropia	ccf7c62aad	Merge branch 'prototype/Swift_3_2' into prototype/Swift_4_0	2017-08-05 08:25:49 +09:00
John Rommel Estropia	f36cb8af63	iOS 11 fixed the NSFetchRequest.affectedStores bug	2017-08-05 08:25:28 +09:00
John Rommel Estropia	10ccadd96c	update demo app	2017-08-05 08:25:03 +09:00
John Rommel Estropia	5c0e78bd53	Deleted EmptyableAttributeType and require "initial" parameter for Value.Required	2017-08-05 00:03:17 +09:00
John Rommel Estropia	8a09688117	Merge branch 'develop' into prototype/Swift_3_2	2017-07-15 21:30:05 +09:00
John Estropia	a366bcf1a3	Merge branch 'develop' of github.com:JohnEstropia/CoreStore into develop	2017-07-11 15:47:20 +09:00
John Rommel Estropia	fcd4be9011	WIP: chained queries for section monitors	2017-07-10 08:23:59 +09:00
John Rommel Estropia	535eb76adc	WIP: query chains!	2017-07-09 10:44:53 +09:00
John Rommel Estropia	c6e68ac24f	reset transactions' context on deinit to break reference cycles in unsafed many-to-many relationships	2017-07-05 23:32:45 +09:00
John Rommel Estropia	aff966aac9	WIP: Query builders	2017-07-05 08:45:10 +09:00
John Rommel Estropia	32743b3aee	Merge branch 'prototype/Swift_3_2' into prototype/Swift_4_0	2017-07-04 23:16:49 +09:00
John Rommel Estropia	a20ad87583	Merge branch 'develop' into prototype/Swift_3_2	2017-07-04 23:14:06 +09:00
John Estropia	a11915db12	minor cleanup	2017-07-04 12:21:46 +09:00
John Rommel Estropia	961f39a806	add internal utilities to force checkpoint operations on SQLite	2017-07-01 17:05:10 +09:00
John Rommel Estropia	3096cb784c	add internal utilities to force checkpoint operations on SQLite	2017-07-01 16:45:11 +09:00
John Rommel Estropia	809aa4ff96	allow querying file size on SQLiteStore	2017-07-01 11:50:23 +09:00
John Estropia	8d926d25ec	Merge pull request #177 from blender/feature/optional-where-chaining Add optional && and \|\| operators to Where clause	2017-06-28 13:32:16 +09:00
Tommaso Piazza	790454f514	Add optional && and \|\| operators to Where clause	2017-06-27 13:58:16 +02:00
John Rommel Estropia	9a38707c58	Merge branch 'prototype/Swift_3_2' into prototype/Swift_4_0	2017-06-26 00:36:07 +09:00
John Rommel Estropia	fb7e2f7f7f	Merge branch 'develop' into prototype/Swift_3_2	2017-06-26 00:34:32 +09:00
John Rommel Estropia	f72efc80b2	added utilities for combining Where arrays and OrderBy arrays	2017-06-24 17:42:56 +09:00
John Estropia	fcda5399da	Merge branch 'prototype/Swift_3_2' into prototype/Swift_4_0	2017-06-23 17:58:49 +09:00
John Estropia	fd3a9b00ec	fix FRC breaking again for iOS 8	2017-06-23 17:58:34 +09:00
John Estropia	f56c37f9ee	Merge branch 'prototype/Swift_3_2' into prototype/Swift_4_0	2017-06-23 12:43:20 +09:00
John Estropia	5f5000218a	Merge branch 'develop' into prototype/Swift_3_2 # Conflicts: # CoreStoreDemo/CoreStoreDemo/List and Object Observers Demo/Palette.swift # Sources/Value.swift	2017-06-23 12:43:03 +09:00
John Estropia	e8eb309d82	Added source docs on usage of custom getters and setters for CoreStoreObject properties (Value.Required, etc)	2017-06-20 20:32:27 +09:00
John Rommel Estropia	d0c3203e63	force reset contexts after autocommit	2017-06-17 21:50:21 +09:00
John Rommel Estropia	f5b3901caa	fix tests and demo app	2017-06-17 02:13:54 +09:00
John Rommel Estropia	1a99fea820	complete PartialObject utilities	2017-06-17 01:55:36 +09:00
John Rommel Estropia	195b60615b	added missing utilities	2017-06-16 01:42:09 +09:00
John Rommel Estropia	2c394965b8	remove direct access to CoreStoreObject.primitiveValues and replace PartialObject<O>	2017-06-16 01:02:23 +09:00
John Rommel Estropia	746d697691	WIP: new PartialObject to act as faster KVC wrappers when implementing custom getters and setters for CoreStoreObject	2017-06-15 08:27:08 +09:00
John Estropia	5689158b43	version bump	2017-06-14 21:50:58 +09:00
John Estropia	6fcdf3d011	fix logger demo	2017-06-14 17:43:34 +09:00
John Estropia	e26573c18e	converted the Demo app's observer demo to use CoreStoreObject instead of NSManagedObject	2017-06-14 17:39:57 +09:00
John Estropia	801cf8d9f0	Fixed ListMonitor bug for CoreStoreObjects where ListObservers don't get update notifications	2017-06-14 17:37:46 +09:00
John Rommel Estropia	eced8f2e93	fixed compile error on release mode	2017-06-12 22:39:06 +09:00
John Rommel Estropia	3b735d07ec	fix merge compile errors	2017-06-11 09:33:25 +09:00
John Rommel Estropia	5eb5476e3a	Merge branch 'prototype/Swift_3_2' into prototype/Swift_4_0	2017-06-11 09:17:03 +09:00
John Rommel Estropia	6a42a0054e	Merge branch 'develop' into prototype/Swift_3_2 # Conflicts: # Sources/CoreStoreManagedObject.swift # Sources/CoreStoreSchema.swift # Sources/NSEntityDescription+DynamicModel.swift # Sources/Value.swift	2017-06-11 09:16:34 +09:00
John Rommel Estropia	8c437e19b8	version bump	2017-06-10 23:19:02 +09:00
John Rommel Estropia	9cd3b6c879	code cleanup	2017-06-10 22:13:32 +09:00
John Rommel Estropia	fe135acbec	Improve CoreStoreObjects KVO behavior	2017-06-10 21:02:36 +09:00
John Estropia	997c5bdcfa	uniquify subclass names across model versions	2017-06-09 12:47:22 +09:00
John Estropia	23e12c4539	add constraints to Value.Optional and Value.Required native types	2017-06-09 11:30:09 +09:00
John Estropia	ca9798be14	add constraints to Value.Optional and Value.Required native types	2017-06-09 11:29:51 +09:00
John Estropia	6e01a58c85	Swift 4 support	2017-06-09 11:25:28 +09:00
John Estropia	f618617053	work around issue that crashes the Swift 3.2 compiler (fixes #171 )	2017-06-08 20:18:50 +09:00
John Rommel Estropia	49b8b9c372	Merge branch 'master' into prototype/Swift_3_2	2017-06-08 08:10:59 +09:00
John Rommel Estropia	129f975d96	version bump	2017-06-08 01:17:39 +09:00
John Rommel Estropia	a2e463e58c	Merge branch 'prototype/customMigrationTest' of github.com:JohnEstropia/CoreStore into prototype/customMigrationTest	2017-06-08 01:07:00 +09:00
John Rommel Estropia	5fd50f0e15	fix migration for CoreStoreObject relationships	2017-06-08 01:06:51 +09:00
John Estropia	7f9a915d71	WIP: Swift 3.2	2017-06-07 20:07:43 +09:00
John Estropia	0a81736b7a	Merge branch 'develop' into prototype/customMigrationTest	2017-06-07 12:31:42 +09:00
John Estropia	f9b6dd0c6a	fix bug when using ObjectMonitor with CoreStoreObjects	2017-06-06 17:40:29 +09:00
John Rommel Estropia	0354401b56	WIP: bugfix for CustomSchemaMappingProvider relationship migration bug	2017-06-06 08:39:59 +09:00
John Rommel Estropia	0304067beb	fix ToManyOrdered and ToManyUnordered enumeration crash	2017-06-06 00:49:16 +09:00
John Rommel Estropia	ddd83da434	add Where comparison operators for optional values	2017-06-05 23:09:19 +09:00
John Estropia	fc7df671de	Fixes https://bugs.swift.org/browse/SR-4981	2017-06-05 12:45:35 +09:00
John Rommel Estropia	5fde9030c7	use stronger namespace for CoreStoreObject's internal managed object type	2017-06-05 08:03:37 +09:00
John Rommel Estropia	d7b07b3f00	Added alternative way to set keyPathsForValuesAffectingValue(forKey:) for CoreStoreObjects	2017-06-05 01:30:26 +09:00
John Rommel Estropia	ddd1ffb29f	added ~= operation to create Where clauses for value arrays	2017-06-03 08:51:52 +09:00
John Rommel Estropia	98094000bb	Merge branch 'master' into develop	2017-06-02 23:10:31 +09:00
John Estropia	d5026ef996	Merge branch 'temp/develop' into develop	2017-06-02 19:35:01 +09:00
John Estropia	2cd913b9dd	added more utilities for CoreStoreObject meta	2017-06-02 19:34:54 +09:00
John Estropia	ad9520abbc	Update README.md	2017-06-02 13:24:15 +09:00
John Estropia	c0fc57d10c	Update README.md	2017-06-02 11:34:04 +09:00
John Estropia	0cf4d303e4	Added README sample on how to version CoreStoreObjects	2017-06-02 11:32:48 +09:00
John Rommel Estropia	6de397958a	fix demo app warnings	2017-06-02 02:06:47 +09:00
John Rommel Estropia	55292a84dc	made mapping modell providers public	2017-06-02 02:03:41 +09:00
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