WIP: Dynamic models (Goodbye xcdatamodel files!)

.swift-version

@@ -1 +1 @@
-3.0.1
+3.1

CoreStore.xcodeproj/project.pbxproj

@@ -413,6 +413,13 @@
 		B5C976E81C6E3A5D00B1AF90 /* CoreStoreFetchedResultsController.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5C976E61C6E3A5900B1AF90 /* CoreStoreFetchedResultsController.swift */; };
 		B5C976E91C6E3A5E00B1AF90 /* CoreStoreFetchedResultsController.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5C976E61C6E3A5900B1AF90 /* CoreStoreFetchedResultsController.swift */; };
 		B5D1E22C19FA9FBC003B2874 /* CoreStoreError.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5D1E22B19FA9FBC003B2874 /* CoreStoreError.swift */; };
+		B5D339AF1E925BF200C880DE /* Prototype.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5D339AE1E925BF200C880DE /* Prototype.swift */; };
+		B5D339B01E925BF200C880DE /* Prototype.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5D339AE1E925BF200C880DE /* Prototype.swift */; };
+		B5D339B11E925BF200C880DE /* Prototype.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5D339AE1E925BF200C880DE /* Prototype.swift */; };
+		B5D339B21E925BF200C880DE /* Prototype.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5D339AE1E925BF200C880DE /* Prototype.swift */; };
+		B5D339B41E925C2B00C880DE /* DynamicModelTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5D339B31E925C2B00C880DE /* DynamicModelTests.swift */; };
+		B5D339B51E925C2B00C880DE /* DynamicModelTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5D339B31E925C2B00C880DE /* DynamicModelTests.swift */; };
+		B5D339B61E925C2B00C880DE /* DynamicModelTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5D339B31E925C2B00C880DE /* DynamicModelTests.swift */; };
 		B5D372841A39CD6900F583D9 /* Model.xcdatamodeld in Sources */ = {isa = PBXBuildFile; fileRef = B5D372821A39CD6900F583D9 /* Model.xcdatamodeld */; };
 		B5D39A0219FD00C9000E91BB /* Foundation.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = B5D39A0119FD00C9000E91BB /* Foundation.framework */; };
 		B5D3F6451C887C0A00C7492A /* LegacySQLiteStore.swift in Sources */ = {isa = PBXBuildFile; fileRef = B5D3F6441C887C0A00C7492A /* LegacySQLiteStore.swift */; };
@@ -693,6 +700,8 @@
 		B5C976E21C6C9F6A00B1AF90 /* UnsafeDataTransaction+Observing.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = "UnsafeDataTransaction+Observing.swift"; sourceTree = "<group>"; };
 		B5C976E61C6E3A5900B1AF90 /* CoreStoreFetchedResultsController.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = CoreStoreFetchedResultsController.swift; sourceTree = "<group>"; };
 		B5D1E22B19FA9FBC003B2874 /* CoreStoreError.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = CoreStoreError.swift; sourceTree = "<group>"; };
+		B5D339AE1E925BF200C880DE /* Prototype.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = Prototype.swift; sourceTree = "<group>"; };
+		B5D339B31E925C2B00C880DE /* DynamicModelTests.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = DynamicModelTests.swift; sourceTree = "<group>"; };
 		B5D372831A39CD6900F583D9 /* Model.xcdatamodel */ = {isa = PBXFileReference; lastKnownFileType = wrapper.xcdatamodel; path = Model.xcdatamodel; sourceTree = "<group>"; };
 		B5D39A0119FD00C9000E91BB /* Foundation.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = Foundation.framework; path = System/Library/Frameworks/Foundation.framework; sourceTree = SDKROOT; };
 		B5D3F6441C887C0A00C7492A /* LegacySQLiteStore.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = LegacySQLiteStore.swift; sourceTree = "<group>"; };
@@ -892,6 +901,7 @@
 				B5489F4A1CF5F743008B4978 /* BaseTests */,
 				B5DBE2DD1C9939E100B5CEFA /* BridgingTests.h */,
 				B5DBE2DE1C9939E100B5CEFA /* BridgingTests.m */,
+				B5D339B31E925C2B00C880DE /* DynamicModelTests.swift */,
 				B5519A3F1CA1B17B002BEF78 /* ErrorTests.swift */,
 				B52557871D02DE8100E51965 /* FetchTests.swift */,
 				B5489F4F1CF603D5008B4978 /* FromTests.swift */,
@@ -1041,6 +1051,7 @@
 		B57358D71E5A7F9B0094B50A /* Dynamic Models */ = {
 			isa = PBXGroup;
 			children = (
+				B5D339AE1E925BF200C880DE /* Prototype.swift */,
 			);
 			path = "Dynamic Models";
 			sourceTree = "<group>";
@@ -1656,6 +1667,7 @@
 				B5E222231CA4E12600BA2E95 /* CSSynchronousDataTransaction.swift in Sources */,
 				B5E84F281AFF84920064E85B /* NSManagedObject+Convenience.swift in Sources */,
 				B51BE06A1B47FC4B0069F532 /* NSManagedObjectModel+Setup.swift in Sources */,
+				B5D339AF1E925BF200C880DE /* Prototype.swift in Sources */,
 				B5AEFAB51C9962AE00AD137F /* CoreStoreBridge.swift in Sources */,
 				B5E2222A1CA51B6E00BA2E95 /* CSUnsafeDataTransaction.swift in Sources */,
 				B5E84F391AFF85470064E85B /* NSManagedObjectContext+Querying.swift in Sources */,
@@ -1703,6 +1715,7 @@
 				B5DC47C61C93D22900FA3BF3 /* MigrationChainTests.swift in Sources */,
 				B525576C1CFAF18F00E51965 /* IntoTests.swift in Sources */,
 				B5220E0C1D0D0D19009BC71E /* ImportTests.swift in Sources */,
+				B5D339B41E925C2B00C880DE /* DynamicModelTests.swift in Sources */,
 				B5D372841A39CD6900F583D9 /* Model.xcdatamodeld in Sources */,
 				B52557881D02DE8100E51965 /* FetchTests.swift in Sources */,
 				B5489F501CF603D5008B4978 /* FromTests.swift in Sources */,
@@ -1812,6 +1825,7 @@
 				82BA18C41C4BBD5300A0916E /* ListMonitor.swift in Sources */,
 				82BA18BA1C4BBD4A00A0916E /* Select.swift in Sources */,
 				B5AEFAB61C9962AE00AD137F /* CoreStoreBridge.swift in Sources */,
+				B5D339B01E925BF200C880DE /* Prototype.swift in Sources */,
 				B5E2222C1CA51B6E00BA2E95 /* CSUnsafeDataTransaction.swift in Sources */,
 				82BA18A71C4BBD2900A0916E /* CoreStore+Logging.swift in Sources */,
 				82BA18D81C4BBD7100A0916E /* WeakObject.swift in Sources */,
@@ -1859,6 +1873,7 @@
 				B5DC47C71C93D22900FA3BF3 /* MigrationChainTests.swift in Sources */,
 				B5DBE2E01C9939E100B5CEFA /* BridgingTests.m in Sources */,
 				B5220E0D1D0D0D19009BC71E /* ImportTests.swift in Sources */,
+				B5D339B51E925C2B00C880DE /* DynamicModelTests.swift in Sources */,
 				B525576D1CFAF18F00E51965 /* IntoTests.swift in Sources */,
 				B580857B1CDF808D004C2EEB /* SetupTests.swift in Sources */,
 				B52557891D02DE8100E51965 /* FetchTests.swift in Sources */,
@@ -1968,6 +1983,7 @@
 				B5220E1A1D130791009BC71E /* CoreStoreFetchedResultsController.swift in Sources */,
 				B53FBA0F1CAB5E6500F0D40A /* CSCoreStore+Migrating.swift in Sources */,
 				B59FA0B21CCBACA8007C9BCA /* ICloudStore.swift in Sources */,
+				B5D339B21E925BF200C880DE /* Prototype.swift in Sources */,
 				B52DD19A1BE1F92800949AFE /* CoreStore+Logging.swift in Sources */,
 				B52DD1A71BE1F93200949AFE /* BaseDataTransaction+Querying.swift in Sources */,
 				B546F96C1C9AF26D00D5AC55 /* CSInMemoryStore.swift in Sources */,
@@ -2015,6 +2031,7 @@
 				B5DBE2E11C9939E100B5CEFA /* BridgingTests.m in Sources */,
 				B5220E0E1D0D0D19009BC71E /* ImportTests.swift in Sources */,
 				B525576E1CFAF18F00E51965 /* IntoTests.swift in Sources */,
+				B5D339B61E925C2B00C880DE /* DynamicModelTests.swift in Sources */,
 				B580857C1CDF808F004C2EEB /* SetupTests.swift in Sources */,
 				B525578A1D02DE8100E51965 /* FetchTests.swift in Sources */,
 				B5220E281D1308E5009BC71E /* SectionByTests.swift in Sources */,
@@ -2124,6 +2141,7 @@
 				B56321A21BD65216006C9394 /* ListObserver.swift in Sources */,
 				B563218A1BD65216006C9394 /* SynchronousDataTransaction.swift in Sources */,
 				B5AEFAB71C9962AE00AD137F /* CoreStoreBridge.swift in Sources */,
+				B5D339B11E925BF200C880DE /* Prototype.swift in Sources */,
 				B5E2222D1CA51B6E00BA2E95 /* CSUnsafeDataTransaction.swift in Sources */,
 				B563219F1BD65216006C9394 /* ObjectMonitor.swift in Sources */,
 				B56321B61BD6521C006C9394 /* WeakObject.swift in Sources */,

CoreStoreTests/DynamicModelTests.swift

@@ -0,0 +1,81 @@
+//
+//  DynamicModelTests.swift
+//  CoreStore
+//
+//  Created by John Estropia on 2017/04/03.
+//  Copyright © 2017 John Rommel Estropia. All rights reserved.
+//
+
+import XCTest
+
+import CoreData
+import CoreStore
+
+
+class DynamicModelTests: XCTestCase {
+    
+    override func setUp() {
+        super.setUp()
+        // Put setup code here. This method is called before the invocation of each test method in the class.
+    }
+    
+    override func tearDown() {
+        // Put teardown code here. This method is called after the invocation of each test method in the class.
+        super.tearDown()
+    }
+    
+    func testDynamicModels_CanBeDeclaredCorrectly() {
+        
+        class Bird: CoreStoreManagedObject {
+            
+            let species = Attribute.Required<String>("species", default: "Swift")
+        }
+        class Mascot: Bird {
+            
+            let nickname = Attribute.Optional<String>("nickname")
+            let year = Attribute.Required<Int>("year", default: 2016)
+        }
+        
+        let k1 = Bird.keyPath({ $0.species })
+        XCTAssertEqual(k1, "species")
+        
+        let k2 = Mascot.keyPath({ $0.species })
+        XCTAssertEqual(k2, "species")
+        
+        let k3 = Mascot.keyPath({ $0.nickname })
+        XCTAssertEqual(k3, "nickname")
+        
+        let entities = [
+            "Bird": Entity<Bird>("Bird").entityDescription,
+            "Mascot": Entity<Mascot>("Mascot").entityDescription
+        ]
+        enum Static {
+            
+            static let context = NSManagedObjectContext(concurrencyType: .mainQueueConcurrencyType)
+        }
+        let rawBird = NSManagedObject(entity: entities["Bird"]!, insertInto: Static.context)
+        let rawMascot = NSManagedObject(entity: entities["Mascot"]!, insertInto: Static.context)
+        
+        
+        let bird = Bird(rawBird)
+        XCTAssertEqual(bird.species*, "Swift")
+        XCTAssertTrue(type(of: bird.species*) == String.self)
+        
+        bird.species .= "Sparrow"
+        XCTAssertEqual(bird.species*, "Sparrow")
+        
+        let mascot = Mascot(rawMascot)
+        XCTAssertEqual(mascot.species*, "Swift")
+        XCTAssertEqual(mascot.nickname*, nil)
+        
+        mascot.nickname .= "Riko"
+        XCTAssertEqual(mascot.nickname*, "Riko")
+        
+        
+        let p1 = (Bird.meta.species == "Swift")
+        XCTAssertEqual(p1, Where("%K == %@", "species", "Swift").predicate)
+
+        let p2 = (Mascot.meta.nickname == "Riko")
+        XCTAssertEqual(p2, Where("%K == %@", "nickname", "Riko").predicate)
+    }
+}

Sources/Fetching and Querying/QueryableAttributeType.swift

@@ -24,8 +24,8 @@
 //
 
 import Foundation
-import CoreGraphics
 import CoreData
+import CoreGraphics
 
 
 // MARK: - QueryableAttributeType
@@ -44,155 +44,6 @@ public protocol QueryableAttributeType: Hashable, SelectResultType {
 }
 
 
-// MARK: - NSManagedObjectID
-
-extension NSManagedObjectID: QueryableAttributeType {
-    
-    public typealias QueryableNativeType = NSManagedObjectID
-    
-    public static let cs_rawAttributeType: NSAttributeType = .objectIDAttributeType
-    
-    @nonobjc @inline(__always)
-    public class func cs_fromQueryableNativeType(_ value: QueryableNativeType) -> Self? {
-        
-        @inline(__always)
-        func forceCast<T: NSManagedObjectID>(_ value: Any) -> T? {
-            
-            return value as? T
-        }
-        return forceCast(value)
-    }
-    
-    @nonobjc @inline(__always)
-    public func cs_toQueryableNativeType() -> QueryableNativeType {
-        
-        return self
-    }
-}
-
-
-// MARK: - NSNumber
-
-extension NSNumber: QueryableAttributeType {
-    
-    public typealias QueryableNativeType = NSNumber
-    
-    public class var cs_rawAttributeType: NSAttributeType {
-        
-        return .integer64AttributeType
-    }
-    
-    @nonobjc @inline(__always)
-    public class func cs_fromQueryableNativeType(_ value: QueryableNativeType) -> Self? {
-        
-        @inline(__always)
-        func forceCast<T: NSNumber>(_ value: Any) -> T? {
-            
-            return value as? T
-        }
-        return forceCast(value)
-    }
-    
-    @nonobjc @inline(__always)
-    public func cs_toQueryableNativeType() -> QueryableNativeType {
-        
-        return self
-    }
-}
-
-
-// MARK: - NSNumber
-
-extension NSDecimalNumber /*: QueryableAttributeType */ {
-    
-    public override class var cs_rawAttributeType: NSAttributeType {
-        
-        return .decimalAttributeType
-    }
-}
-
-
-// MARK: - NSString
-
-extension NSString: QueryableAttributeType {
-    
-    public typealias QueryableNativeType = NSString
-    
-    public static let cs_rawAttributeType: NSAttributeType = .stringAttributeType
-    
-    @nonobjc @inline(__always)
-    public class func cs_fromQueryableNativeType(_ value: QueryableNativeType) -> Self? {
-        
-        @inline(__always)
-        func forceCast<T: NSString>(_ value: Any) -> T? {
-            
-            return value as? T
-        }
-        return forceCast(value)
-    }
-    
-    @nonobjc @inline(__always)
-    public func cs_toQueryableNativeType() -> QueryableNativeType {
-        
-        return self
-    }
-}
-
-
-// MARK: - NSDate
-
-extension NSDate: QueryableAttributeType {
-    
-    public typealias QueryableNativeType = NSDate
-    
-    public static let cs_rawAttributeType: NSAttributeType = .dateAttributeType
-    
-    @nonobjc @inline(__always)
-    public class func cs_fromQueryableNativeType(_ value: QueryableNativeType) -> Self? {
-        
-        @inline(__always)
-        func forceCast<T: NSDate>(_ value: Any) -> T? {
-            
-            return value as? T
-        }
-        return forceCast(value)
-    }
-    
-    @nonobjc @inline(__always)
-    public func cs_toQueryableNativeType() -> QueryableNativeType {
-        
-        return self
-    }
-}
-
-
-// MARK: - NSData
-
-extension NSData: QueryableAttributeType {
-    
-    public typealias QueryableNativeType = NSData
-    
-    public static let cs_rawAttributeType: NSAttributeType = .binaryDataAttributeType
-    
-    @nonobjc @inline(__always)
-    public class func cs_fromQueryableNativeType(_ value: QueryableNativeType) -> Self? {
-        
-        @inline(__always)
-        func forceCast<T: NSData>(_ value: Any) -> T? {
-            
-            return value as? T
-        }
-        return forceCast(value)
-    }
-    
-    @nonobjc @inline(__always)
-    public func cs_toQueryableNativeType() -> QueryableNativeType {
-        
-        return self
-    }
-}
-
-
 // MARK: - Bool
 
 extension Bool: QueryableAttributeType {
@@ -224,6 +75,138 @@ extension Bool: QueryableAttributeType {
 }
 
 
+// MARK: - CGFloat
+
+extension CGFloat: QueryableAttributeType {
+    
+    public typealias QueryableNativeType = NSNumber
+    
+    public static let cs_rawAttributeType: NSAttributeType = .doubleAttributeType
+    
+    @inline(__always)
+    public static func cs_fromQueryableNativeType(_ value: QueryableNativeType) -> CGFloat? {
+        
+        return CGFloat(value.doubleValue)
+    }
+    
+    @inline(__always)
+    public func cs_toQueryableNativeType() -> QueryableNativeType {
+        
+        return self as NSNumber
+    }
+}
+
+
+// MARK: - Data
+
+extension Data: QueryableAttributeType {
+    
+    public typealias QueryableNativeType = NSData
+    
+    public static let cs_rawAttributeType: NSAttributeType = .binaryDataAttributeType
+    
+    @inline(__always)
+    public static func cs_fromQueryableNativeType(_ value: QueryableNativeType) -> Data? {
+        
+        return value as Data
+    }
+    
+    @inline(__always)
+    public func cs_toQueryableNativeType() -> QueryableNativeType {
+        
+        return self as NSData
+    }
+}
+
+
+// MARK: - Date
+
+extension Date: QueryableAttributeType {
+    
+    public typealias QueryableNativeType = NSDate
+    
+    public static let cs_rawAttributeType: NSAttributeType = .dateAttributeType
+    
+    @inline(__always)
+    public static func cs_fromQueryableNativeType(_ value: QueryableNativeType) -> Date? {
+        
+        return value as Date
+    }
+    
+    @inline(__always)
+    public func cs_toQueryableNativeType() -> QueryableNativeType {
+        
+        return self as NSDate
+    }
+}
+
+
+// MARK: - Double
+
+extension Double: QueryableAttributeType {
+    
+    public typealias QueryableNativeType = NSNumber
+    
+    public static let cs_rawAttributeType: NSAttributeType = .doubleAttributeType
+    
+    @inline(__always)
+    public static func cs_fromQueryableNativeType(_ value: QueryableNativeType) -> Double? {
+        
+        return value.doubleValue
+    }
+    
+    @inline(__always)
+    public func cs_toQueryableNativeType() -> QueryableNativeType {
+        
+        return self as NSNumber
+    }
+}
+
+
+// MARK: - Float
+
+extension Float: QueryableAttributeType {
+    
+    public typealias QueryableNativeType = NSNumber
+    
+    public static let cs_rawAttributeType: NSAttributeType = .floatAttributeType
+    
+    @inline(__always)
+    public static func cs_fromQueryableNativeType(_ value: QueryableNativeType) -> Float? {
+        
+        return value.floatValue
+    }
+    
+    @inline(__always)
+    public func cs_toQueryableNativeType() -> QueryableNativeType {
+        
+        return self as NSNumber
+    }
+}
+
+
+// MARK: - Int
+
+extension Int: QueryableAttributeType {
+    
+    public typealias QueryableNativeType = NSNumber
+    
+    public static let cs_rawAttributeType: NSAttributeType = .integer64AttributeType
+    
+    @inline(__always)
+    public static func cs_fromQueryableNativeType(_ value: QueryableNativeType) -> Int? {
+        
+        return value.intValue
+    }
+    
+    @inline(__always)
+    public func cs_toQueryableNativeType() -> QueryableNativeType {
+        
+        return self as NSNumber
+    }
+}
+
+
 // MARK: - Int8
 
 extension Int8: QueryableAttributeType {
@@ -312,112 +295,217 @@ extension Int64: QueryableAttributeType {
 }
 
 
-// MARK: - Int
+// MARK: - NSData
 
-extension Int: QueryableAttributeType {
+extension NSData: QueryableAttributeType {
     
-    public typealias QueryableNativeType = NSNumber
+    public typealias QueryableNativeType = NSData
     
-    public static let cs_rawAttributeType: NSAttributeType = .integer64AttributeType
+    public static let cs_rawAttributeType: NSAttributeType = .binaryDataAttributeType
     
-    @inline(__always)
+    @nonobjc @inline(__always)
-    public static func cs_fromQueryableNativeType(_ value: QueryableNativeType) -> Int? {
+    public class func cs_fromQueryableNativeType(_ value: QueryableNativeType) -> Self? {
         
-        return value.intValue
+        @inline(__always)
+        func forceCast<T: NSData>(_ value: Any) -> T? {
+            
+            return value as? T
+        }
+        return forceCast(value)
     }
     
-    @inline(__always)
+    @nonobjc @inline(__always)
     public func cs_toQueryableNativeType() -> QueryableNativeType {
         
-        return self as NSNumber
+        return self
     }
 }
 
 
-// MARK: - Double
+// MARK: - NSDate
 
-extension Double: QueryableAttributeType {
+extension NSDate: QueryableAttributeType {
-    
-    public typealias QueryableNativeType = NSNumber
-    
-    public static let cs_rawAttributeType: NSAttributeType = .doubleAttributeType
-    
-    @inline(__always)
-    public static func cs_fromQueryableNativeType(_ value: QueryableNativeType) -> Double? {
-        
-        return value.doubleValue
-    }
-    
-    @inline(__always)
-    public func cs_toQueryableNativeType() -> QueryableNativeType {
-        
-        return self as NSNumber
-    }
-}
-
-
-// MARK: - Float
-
-extension Float: QueryableAttributeType {
-    
-    public typealias QueryableNativeType = NSNumber
-    
-    public static let cs_rawAttributeType: NSAttributeType = .floatAttributeType
-    
-    @inline(__always)
-    public static func cs_fromQueryableNativeType(_ value: QueryableNativeType) -> Float? {
-        
-        return value.floatValue
-    }
-    
-    @inline(__always)
-    public func cs_toQueryableNativeType() -> QueryableNativeType {
-        
-        return self as NSNumber
-    }
-}
-
-
-// MARK: - CGFloat
-
-extension CGFloat: QueryableAttributeType {
-    
-    public typealias QueryableNativeType = NSNumber
-    
-    public static let cs_rawAttributeType: NSAttributeType = .doubleAttributeType
-    
-    @inline(__always)
-    public static func cs_fromQueryableNativeType(_ value: QueryableNativeType) -> CGFloat? {
-        
-        return CGFloat(value.doubleValue)
-    }
-    
-    @inline(__always)
-    public func cs_toQueryableNativeType() -> QueryableNativeType {
-        
-        return self as NSNumber
-    }
-}
-
-
-// MARK: - Date
-
-extension Date: QueryableAttributeType {
     
     public typealias QueryableNativeType = NSDate
     
     public static let cs_rawAttributeType: NSAttributeType = .dateAttributeType
     
-    @inline(__always)
+    @nonobjc @inline(__always)
-    public static func cs_fromQueryableNativeType(_ value: QueryableNativeType) -> Date? {
+    public class func cs_fromQueryableNativeType(_ value: QueryableNativeType) -> Self? {
         
-        return value as Date
+        @inline(__always)
+        func forceCast<T: NSDate>(_ value: Any) -> T? {
+            
+            return value as? T
+        }
+        return forceCast(value)
     }
     
-    @inline(__always)
+    @nonobjc @inline(__always)
     public func cs_toQueryableNativeType() -> QueryableNativeType {
         
-        return self as NSDate
+        return self
+    }
+}
+
+
+// MARK: - NSDecimalNumber
+
+extension NSDecimalNumber /*: QueryableAttributeType */ {
+    
+    public override class var cs_rawAttributeType: NSAttributeType {
+        
+        return .decimalAttributeType
+    }
+}
+
+
+// MARK: - NSManagedObjectID
+
+extension NSManagedObjectID: QueryableAttributeType {
+    
+    public typealias QueryableNativeType = NSManagedObjectID
+    
+    public static let cs_rawAttributeType: NSAttributeType = .objectIDAttributeType
+    
+    @nonobjc @inline(__always)
+    public class func cs_fromQueryableNativeType(_ value: QueryableNativeType) -> Self? {
+        
+        @inline(__always)
+        func forceCast<T: NSManagedObjectID>(_ value: Any) -> T? {
+            
+            return value as? T
+        }
+        return forceCast(value)
+    }
+    
+    @nonobjc @inline(__always)
+    public func cs_toQueryableNativeType() -> QueryableNativeType {
+        
+        return self
+    }
+}
+
+
+// MARK: - NSNull
+
+extension NSNull: QueryableAttributeType {
+    
+    public typealias QueryableNativeType = NSNull
+    
+    public static let cs_rawAttributeType: NSAttributeType = .undefinedAttributeType
+    
+    @nonobjc @inline(__always)
+    public static func cs_fromQueryableNativeType(_ value: QueryableNativeType) -> Self? {
+        
+        return self.init()
+    }
+    
+    @nonobjc @inline(__always)
+    public func cs_toQueryableNativeType() -> QueryableNativeType {
+        
+        return self
+    }
+}
+
+
+// MARK: - NSNumber
+
+extension NSNumber: QueryableAttributeType {
+    
+    public typealias QueryableNativeType = NSNumber
+    
+    public class var cs_rawAttributeType: NSAttributeType {
+        
+        return .integer64AttributeType
+    }
+    
+    @nonobjc @inline(__always)
+    public class func cs_fromQueryableNativeType(_ value: QueryableNativeType) -> Self? {
+        
+        @inline(__always)
+        func forceCast<T: NSNumber>(_ value: Any) -> T? {
+            
+            return value as? T
+        }
+        return forceCast(value)
+    }
+    
+    @nonobjc @inline(__always)
+    public func cs_toQueryableNativeType() -> QueryableNativeType {
+        
+        return self
+    }
+}
+
+
+// MARK: - NSString
+
+extension NSString: QueryableAttributeType {
+    
+    public typealias QueryableNativeType = NSString
+    
+    public static let cs_rawAttributeType: NSAttributeType = .stringAttributeType
+    
+    @nonobjc @inline(__always)
+    public class func cs_fromQueryableNativeType(_ value: QueryableNativeType) -> Self? {
+        
+        @inline(__always)
+        func forceCast<T: NSString>(_ value: Any) -> T? {
+            
+            return value as? T
+        }
+        return forceCast(value)
+    }
+    
+    @nonobjc @inline(__always)
+    public func cs_toQueryableNativeType() -> QueryableNativeType {
+        
+        return self
+    }
+}
+
+
+// MARK: - NSURL
+
+extension NSURL: QueryableAttributeType {
+    
+    public typealias QueryableNativeType = NSString
+    
+    public static let cs_rawAttributeType: NSAttributeType = .stringAttributeType
+    
+    @nonobjc @inline(__always)
+    public static func cs_fromQueryableNativeType(_ value: QueryableNativeType) -> Self? {
+        
+        return self.init(string: value as String)
+    }
+    
+    @nonobjc @inline(__always)
+    public func cs_toQueryableNativeType() -> QueryableNativeType {
+        
+        return (self as URL).absoluteString as QueryableNativeType
+    }
+}
+
+
+// MARK: - NSUUID
+
+extension NSUUID: QueryableAttributeType {
+    
+    public typealias QueryableNativeType = NSString
+    
+    public static let cs_rawAttributeType: NSAttributeType = .stringAttributeType
+    
+    @nonobjc @inline(__always)
+    public static func cs_fromQueryableNativeType(_ value: QueryableNativeType) -> Self? {
+        
+        return self.init(uuidString: value.lowercased)
+    }
+    
+    @nonobjc @inline(__always)
+    public func cs_toQueryableNativeType() -> QueryableNativeType {
+        
+        return self.uuidString.lowercased() as QueryableNativeType
     }
 }
 
@@ -444,45 +532,45 @@ extension String: QueryableAttributeType {
 }
 
 
-// MARK: - Data
+// MARK: - URL
 
-extension Data: QueryableAttributeType {
+extension URL: QueryableAttributeType {
     
-    public typealias QueryableNativeType = NSData
+    public typealias QueryableNativeType = NSString
     
-    public static let cs_rawAttributeType: NSAttributeType = .binaryDataAttributeType
+    public static let cs_rawAttributeType: NSAttributeType = .stringAttributeType
     
     @inline(__always)
-    public static func cs_fromQueryableNativeType(_ value: QueryableNativeType) -> Data? {
+    public static func cs_fromQueryableNativeType(_ value: QueryableNativeType) -> URL? {
         
-        return value as Data
+        return self.init(string: value as String)
     }
     
     @inline(__always)
     public func cs_toQueryableNativeType() -> QueryableNativeType {
         
-        return self as NSData
+        return self.absoluteString as QueryableNativeType
     }
 }
 
 
-// MARK: - NSNull
+// MARK: - UUID
 
-extension NSNull: QueryableAttributeType {
+extension UUID: QueryableAttributeType {
     
-    public typealias QueryableNativeType = NSNull
+    public typealias QueryableNativeType = NSString
     
-    public static let cs_rawAttributeType: NSAttributeType = .undefinedAttributeType
+    public static let cs_rawAttributeType: NSAttributeType = .stringAttributeType
     
-    @nonobjc @inline(__always)
+    @inline(__always)
-    public static func cs_fromQueryableNativeType(_ value: QueryableNativeType) -> Self? {
+    public static func cs_fromQueryableNativeType(_ value: QueryableNativeType) -> UUID? {
         
-        return self.init()
+        return self.init(uuidString: value.lowercased)
     }
     
-    @nonobjc @inline(__always)
+    @inline(__always)
     public func cs_toQueryableNativeType() -> QueryableNativeType {
         
-        return self
+        return self.uuidString.lowercased() as QueryableNativeType
     }
 }

Sources/Importing/ImportableAttributeType.swift

@@ -25,10 +25,36 @@
 
 import Foundation
 import CoreData
+import CoreGraphics
 
 
 // MARK: - ImportableAttributeType
 
+/**
+ Types supported by CoreStore as `NSManagedObject` attribute types.
+ Supported default types:
+ - Bool
+ - CGFloat
+ - Data
+ - Date
+ - Double
+ - Float
+ - Int
+ - Int8
+ - Int16
+ - Int32
+ - Int64
+ - NSData
+ - NSDate
+ - NSDecimalNumber
+ - NSNumber
+ - NSString
+ - NSURL
+ - NSUUID
+ - String
+ - URL
+ - UUID
+ */
 public protocol ImportableAttributeType: QueryableAttributeType {
     
     associatedtype ImportableNativeType: QueryableNativeType
@@ -44,110 +70,6 @@ public protocol ImportableAttributeType: QueryableAttributeType {
 }
 
 
-// MARK: - NSNumber
-
-extension NSNumber: ImportableAttributeType {
-    
-    public typealias ImportableNativeType = NSNumber
-    
-    @nonobjc @inline(__always)
-    public class func cs_emptyValue() -> Self {
-        
-        return self.init()
-    }
-    
-    @nonobjc @inline(__always)
-    public class func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Self? {
-        
-        return self.cs_fromQueryableNativeType(value)
-    }
-    
-    @nonobjc @inline(__always)
-    public func cs_toImportableNativeType() -> ImportableNativeType {
-        
-        return self.cs_toQueryableNativeType()
-    }
-}
-
-
-// MARK: - NSString
-
-extension NSString: ImportableAttributeType {
-    
-    public typealias ImportableNativeType = NSString
-    
-    @nonobjc @inline(__always)
-    public class func cs_emptyValue() -> Self {
-        
-        return self.init()
-    }
-    
-    @nonobjc @inline(__always)
-    public class func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Self? {
-        
-        return self.cs_fromQueryableNativeType(value)
-    }
-    
-    @nonobjc @inline(__always)
-    public func cs_toImportableNativeType() -> ImportableNativeType {
-        
-        return self.cs_toQueryableNativeType()
-    }
-}
-
-
-// MARK: - NSDate
-
-extension NSDate: ImportableAttributeType {
-    
-    public typealias ImportableNativeType = NSDate
-    
-    @nonobjc @inline(__always)
-    public class func cs_emptyValue() -> Self {
-        
-        return self.init(timeIntervalSinceReferenceDate: 0)
-    }
-    
-    @nonobjc @inline(__always)
-    public class func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Self? {
-        
-        return self.cs_fromQueryableNativeType(value)
-    }
-    
-    @nonobjc @inline(__always)
-    public func cs_toImportableNativeType() -> ImportableNativeType {
-        
-        return self.cs_toQueryableNativeType()
-    }
-}
-
-
-// MARK: - NSData
-
-extension NSData: ImportableAttributeType {
-    
-    public typealias ImportableNativeType = NSData
-    
-    @nonobjc @inline(__always)
-    public class func cs_emptyValue() -> Self {
-        
-        return self.init()
-    }
-    
-    @nonobjc @inline(__always)
-    public class func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Self? {
-        
-        return self.cs_fromQueryableNativeType(value)
-    }
-    
-    @nonobjc @inline(__always)
-    public func cs_toImportableNativeType() -> ImportableNativeType {
-        
-        return self.cs_toQueryableNativeType()
-    }
-}
-
-
 // MARK: - Bool
 
 extension Bool: ImportableAttributeType {
@@ -174,6 +96,188 @@ extension Bool: ImportableAttributeType {
 }
 
 
+// MARK: - CGFloat
+
+extension CGFloat: ImportableAttributeType {
+    
+    public typealias ImportableNativeType = NSNumber
+    
+    @inline(__always)
+    public static func cs_emptyValue() -> CGFloat {
+        
+        return 0
+    }
+    
+    @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: - Data
+
+extension Data: ImportableAttributeType {
+    
+    public typealias ImportableNativeType = NSData
+    
+    @inline(__always)
+    public static func cs_emptyValue() -> Data {
+        
+        return Data()
+    }
+    
+    @inline(__always)
+    public static func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Data? {
+        
+        return self.cs_fromQueryableNativeType(value)
+    }
+    
+    @inline(__always)
+    public func cs_toImportableNativeType() -> ImportableNativeType {
+        
+        return self.cs_toQueryableNativeType()
+    }
+}
+
+
+// MARK: - Date
+
+extension Date: ImportableAttributeType {
+    
+    public typealias ImportableNativeType = NSDate
+    
+    @inline(__always)
+    public static func cs_emptyValue() -> Date {
+        
+        return Date(timeIntervalSinceReferenceDate: 0)
+    }
+    
+    @inline(__always)
+    public static func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Date? {
+        
+        return self.cs_fromQueryableNativeType(value)
+    }
+    
+    @inline(__always)
+    public func cs_toImportableNativeType() -> ImportableNativeType {
+        
+        return self.cs_toQueryableNativeType()
+    }
+}
+
+
+// MARK: - Double
+
+extension Double: ImportableAttributeType {
+    
+    public typealias ImportableNativeType = NSNumber
+    
+    @inline(__always)
+    public static func cs_emptyValue() -> Double {
+        
+        return 0
+    }
+    
+    @inline(__always)
+    public static func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Double? {
+        
+        return self.cs_fromQueryableNativeType(value)
+    }
+    
+    @inline(__always)
+    public func cs_toImportableNativeType() -> ImportableNativeType {
+        
+        return self.cs_toQueryableNativeType()
+    }
+}
+
+
+// MARK: - Float
+
+extension Float: ImportableAttributeType {
+    
+    public typealias ImportableNativeType = NSNumber
+    
+    @inline(__always)
+    public static func cs_emptyValue() -> Float {
+        
+        return 0
+    }
+    
+    @inline(__always)
+    public static func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Float? {
+        
+        return self.cs_fromQueryableNativeType(value)
+    }
+    
+    @inline(__always)
+    public func cs_toImportableNativeType() -> ImportableNativeType {
+        
+        return self.cs_toQueryableNativeType()
+    }
+}
+
+
+// MARK: - Int
+
+extension Int: ImportableAttributeType {
+    
+    public typealias ImportableNativeType = NSNumber
+    
+    @inline(__always)
+    public static func cs_emptyValue() -> Int {
+        
+        return 0
+    }
+    
+    @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: - Int8
+
+extension Int8: ImportableAttributeType {
+    
+    public typealias ImportableNativeType = NSNumber
+    
+    @inline(__always)
+    public static func cs_emptyValue() -> Int8 {
+        
+        return 0
+    }
+    
+    @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: - Int16
 
 extension Int16: ImportableAttributeType {
@@ -252,25 +356,25 @@ extension Int64: ImportableAttributeType {
 }
 
 
-// MARK: - Double
+// MARK: - NSData
 
-extension Double: ImportableAttributeType {
+extension NSData: ImportableAttributeType {
     
-    public typealias ImportableNativeType = NSNumber
+    public typealias ImportableNativeType = NSData
     
-    @inline(__always)
+    @nonobjc @inline(__always)
-    public static func cs_emptyValue() -> Double {
+    public class func cs_emptyValue() -> Self {
         
-        return 0
+        return self.init()
     }
     
-    @inline(__always)
+    @nonobjc @inline(__always)
-    public static func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Double? {
+    public class func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Self? {
         
         return self.cs_fromQueryableNativeType(value)
     }
     
-    @inline(__always)
+    @nonobjc @inline(__always)
     public func cs_toImportableNativeType() -> ImportableNativeType {
         
         return self.cs_toQueryableNativeType()
@@ -278,51 +382,132 @@ extension Double: ImportableAttributeType {
 }
 
 
-// MARK: - Float
+// MARK: - NSDate
 
-extension Float: ImportableAttributeType {
+extension NSDate: ImportableAttributeType {
-    
-    public typealias ImportableNativeType = NSNumber
-    
-    @inline(__always)
-    public static func cs_emptyValue() -> Float {
-        
-        return 0
-    }
-    
-    @inline(__always)
-    public static func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Float? {
-        
-        return self.cs_fromQueryableNativeType(value)
-    }
-    
-    @inline(__always)
-    public func cs_toImportableNativeType() -> ImportableNativeType {
-        
-        return self.cs_toQueryableNativeType()
-    }
-}
-
-
-// MARK: - Date
-
-extension Date: ImportableAttributeType {
     
     public typealias ImportableNativeType = NSDate
     
-    @inline(__always)
+    @nonobjc @inline(__always)
-    public static func cs_emptyValue() -> Date {
+    public class func cs_emptyValue() -> Self {
         
-        return Date(timeIntervalSinceReferenceDate: 0)
+        return self.init(timeIntervalSinceReferenceDate: 0)
     }
     
-    @inline(__always)
+    @nonobjc @inline(__always)
-    public static func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Date? {
+    public class func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Self? {
         
         return self.cs_fromQueryableNativeType(value)
     }
     
-    @inline(__always)
+    @nonobjc @inline(__always)
+    public func cs_toImportableNativeType() -> ImportableNativeType {
+        
+        return self.cs_toQueryableNativeType()
+    }
+}
+
+
+// MARK: - NSNumber
+
+extension NSNumber: ImportableAttributeType {
+    
+    public typealias ImportableNativeType = NSNumber
+    
+    @nonobjc @inline(__always)
+    public class func cs_emptyValue() -> Self {
+        
+        return self.init()
+    }
+    
+    @nonobjc @inline(__always)
+    public class func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Self? {
+        
+        return self.cs_fromQueryableNativeType(value)
+    }
+    
+    @nonobjc @inline(__always)
+    public func cs_toImportableNativeType() -> ImportableNativeType {
+        
+        return self.cs_toQueryableNativeType()
+    }
+}
+
+
+// MARK: - NSString
+
+extension NSString: ImportableAttributeType {
+    
+    public typealias ImportableNativeType = NSString
+    
+    @nonobjc @inline(__always)
+    public class func cs_emptyValue() -> Self {
+        
+        return self.init()
+    }
+    
+    @nonobjc @inline(__always)
+    public class func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Self? {
+        
+        return self.cs_fromQueryableNativeType(value)
+    }
+    
+    @nonobjc @inline(__always)
+    public func cs_toImportableNativeType() -> ImportableNativeType {
+        
+        return self.cs_toQueryableNativeType()
+    }
+}
+
+
+// MARK: - NSURL
+
+extension NSURL: ImportableAttributeType {
+    
+    public typealias ImportableNativeType = NSString
+    
+    @nonobjc @inline(__always)
+    public class func cs_emptyValue() -> Self {
+        
+        return self.init(string: "")!
+    }
+    
+    @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: - NSUUID
+
+extension NSUUID: ImportableAttributeType {
+    
+    public typealias ImportableNativeType = NSString
+    
+    public class func cs_emptyValue() -> Self {
+        
+        enum Static {
+            
+            static var zero = Array<UInt8>(repeating: 0, count: 16)
+        }
+        return self.init(uuidBytes: &Static.zero)
+    }
+    
+    @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()
@@ -356,20 +541,56 @@ extension String: ImportableAttributeType {
 }
 
 
-// MARK: - Data
+// MARK: - URL
 
-extension Data: ImportableAttributeType {
+extension URL: ImportableAttributeType {
     
-    public typealias ImportableNativeType = NSData
+    public typealias ImportableNativeType = NSString
     
-    @inline(__always)
+    public static func cs_emptyValue() -> URL {
-    public static func cs_emptyValue() -> Data {
         
-        return Data()
+        enum Static {
+            
+            static let empty = URL(string: "")!
+        }
+        return Static.empty
     }
     
     @inline(__always)
-    public static func cs_fromImportableNativeType(_ value: ImportableNativeType) -> Data? {
+    public static func cs_fromImportableNativeType(_ value: ImportableNativeType) -> URL? {
+        
+        return self.cs_fromQueryableNativeType(value)
+    }
+    
+    @inline(__always)
+    public func cs_toImportableNativeType() -> ImportableNativeType {
+        
+        return self.cs_toQueryableNativeType()
+    }
+}
+
+
+// MARK: - UUID
+
+extension UUID: ImportableAttributeType {
+    
+    public typealias ImportableNativeType = NSString
+    
+    public static func cs_emptyValue() -> UUID {
+        
+        enum Static {
+            
+            static let empty: UUID = {
+                
+                var zero = Array<UInt8>(repeating: 0, count: 16)
+                return NSUUID(uuidBytes: &zero) as UUID
+            }()
+        }
+        return Static.empty
+    }
+    
+    @inline(__always)
+    public static func cs_fromImportableNativeType(_ value: ImportableNativeType) -> UUID? {
         
         return self.cs_fromQueryableNativeType(value)
     }

Sources/Setup/Dynamic Models/Prototype.swift

@@ -0,0 +1,266 @@
+//
+//  Prototype.swift
+//  CoreStore
+//
+//  Created by John Estropia on 2017/04/03.
+//  Copyright © 2017 John Rommel Estropia. All rights reserved.
+//
+
+import CoreGraphics
+import Foundation
+
+
+public protocol ManagedObjectProtocol: class {}
+
+public protocol EntityProtocol {
+    
+    var entityDescription: NSEntityDescription { get }
+}
+
+protocol AttributeProtocol: class {
+    
+    static var attributeType: NSAttributeType { get }
+    var keyPath: String { get }
+    var defaultValue: Any? { get }
+    var accessRawObject: () -> NSManagedObject { get set }
+}
+
+open class CoreStoreManagedObject: ManagedObjectProtocol {
+    
+    let rawObject: NSManagedObject?
+    let isMeta: Bool
+    
+    public required init(_ object: NSManagedObject?) {
+        
+        self.isMeta = object == nil
+        self.rawObject = object
+        
+        guard let object = object else {
+            
+            return
+        }
+        self.initializeAttributes(Mirror(reflecting: self), { [unowned object] in object })
+    }
+    
+    private func initializeAttributes(_ mirror: Mirror, _ accessRawObject: @escaping () -> NSManagedObject) {
+        
+        _ = mirror.superclassMirror.flatMap({ self.initializeAttributes($0, accessRawObject) })
+        for child in mirror.children {
+            
+            guard case let property as AttributeProtocol = child.value else {
+                
+                continue
+            }
+            property.accessRawObject = accessRawObject
+        }
+    }
+}
+
+public struct Entity<O: CoreStoreManagedObject>: EntityProtocol {
+    
+    public let entityDescription: NSEntityDescription
+    
+    public init(_ entityName: String) {
+        
+        let entityDescription = NSEntityDescription()
+        entityDescription.name = entityName
+        entityDescription.managedObjectClassName = NSStringFromClass(NSManagedObject.self)
+        entityDescription.properties = type(of: self).initializeAttributes(Mirror(reflecting: O.meta))
+        
+        self.entityDescription = entityDescription
+    }
+    
+    private static func initializeAttributes(_ mirror: Mirror) -> [NSAttributeDescription] {
+        
+        var attributeDescriptions: [NSAttributeDescription] = []
+        for child in mirror.children {
+            
+            guard case let property as AttributeProtocol = child.value else {
+                
+                continue
+            }
+            let attributeDescription = NSAttributeDescription()
+            attributeDescription.name = property.keyPath
+            attributeDescription.attributeType = type(of: property).attributeType
+            attributeDescription.isOptional = false
+            attributeDescription.defaultValue = property.defaultValue
+            attributeDescriptions.append(attributeDescription)
+        }
+        if let baseEntityAttributeDescriptions = mirror.superclassMirror.flatMap(self.initializeAttributes) {
+            
+            attributeDescriptions.append(contentsOf: baseEntityAttributeDescriptions)
+        }
+        return attributeDescriptions
+    }
+}
+
+public enum AttributeContainer<O: ManagedObjectProtocol> {
+    
+    public final class Required<V: ImportableAttributeType>: AttributeProtocol {
+        
+        static var attributeType: NSAttributeType { return V.cs_rawAttributeType }
+        
+        let keyPath: String
+        let defaultValue: Any?
+        var accessRawObject: () -> NSManagedObject = { fatalError("\(O.self) property values should not be accessed") }
+        
+        var value: V {
+            
+            get {
+                
+                let object = self.accessRawObject()
+                let key = self.keyPath
+                let value = object.value(forKey: key)! as! V.ImportableNativeType
+                return V.cs_fromImportableNativeType(value)!
+            }
+            set {
+                
+                let object = self.accessRawObject()
+                let key = self.keyPath
+                object.setValue(newValue.cs_toImportableNativeType(), forKey: key)
+            }
+        }
+        
+        public init(_ keyPath: String, `default`: V = V.cs_emptyValue()) {
+            
+            self.keyPath = keyPath
+            self.defaultValue = `default`
+        }
+    }
+    
+    public final class Optional<V: ImportableAttributeType>: AttributeProtocol {
+        
+        static var attributeType: NSAttributeType { return V.cs_rawAttributeType }
+        
+        let keyPath: String
+        let defaultValue: Any?
+        var accessRawObject: () -> NSManagedObject = { fatalError("\(O.self) property values should not be accessed") }
+        
+        var value: V? {
+            
+            get {
+                
+                let object = self.accessRawObject()
+                let key = self.keyPath
+                guard let value = object.value(forKey: key) as! V.ImportableNativeType? else {
+                    
+                    return nil
+                }
+                return V.cs_fromImportableNativeType(value)
+            }
+            set {
+                
+                let object = self.accessRawObject()
+                let key = self.keyPath
+                object.setValue(newValue?.cs_toImportableNativeType(), forKey: key)
+            }
+        }
+        
+        public init(_ keyPath: String, `default`: V? = nil) {
+            
+            self.keyPath = keyPath
+            self.defaultValue = `default`
+        }
+    }
+}
+
+public extension ManagedObjectProtocol where Self: CoreStoreManagedObject {
+    
+    public typealias Attribute = AttributeContainer<Self>
+    
+    public static var meta: Self {
+        
+        return self.init(nil)
+    }
+    
+    @inline(__always)
+    public static func keyPath<O: CoreStoreManagedObject, V: ImportableAttributeType>(_ attribute: (Self) -> AttributeContainer<O>.Required<V>) -> String  {
+        
+        return attribute(self.meta).keyPath
+    }
+    
+    @inline(__always)
+    public static func keyPath<O: CoreStoreManagedObject, V: ImportableAttributeType>(_ attribute: (Self) -> AttributeContainer<O>.Optional<V>) -> String  {
+        
+        return attribute(self.meta).keyPath
+    }
+}
+
+
+//: ### Convenience Operators
+
+infix operator .= : AssignmentPrecedence
+public func .= <O: ManagedObjectProtocol, V: ImportableAttributeType>(_ attribute: AttributeContainer<O>.Required<V>, _ value: V) {
+    
+    attribute.value = value
+}
+public func .= <O: ManagedObjectProtocol, V: ImportableAttributeType>(_ attribute: AttributeContainer<O>.Optional<V>, _ value: V?) {
+    
+    attribute.value = value
+}
+
+postfix operator *
+public postfix func * <O: ManagedObjectProtocol, V: ImportableAttributeType>(_ attribute: AttributeContainer<O>.Required<V>) -> V {
+    
+    return attribute.value
+}
+public postfix func * <O: ManagedObjectProtocol, V: ImportableAttributeType>(_ attribute: AttributeContainer<O>.Optional<V>) -> V? {
+    
+    return attribute.value
+}
+
+public extension AttributeContainer.Required where V: CVarArg {
+    
+    public static func == (_ attribute: AttributeContainer<O>.Required<V>, _ value: V) -> NSPredicate {
+        
+        return NSPredicate(format: "%K == %@", argumentArray: [attribute.keyPath, value])
+    }
+    public static func < (_ attribute: AttributeContainer<O>.Required<V>, _ value: V) -> NSPredicate {
+        
+        return NSPredicate(format: "%K < %@", argumentArray: [attribute.keyPath, value])
+    }
+    public static func > (_ attribute: AttributeContainer<O>.Required<V>, _ value: V) -> NSPredicate {
+        
+        return NSPredicate(format: "%K > %@", argumentArray: [attribute.keyPath, value])
+    }
+    public static func <= (_ attribute: AttributeContainer<O>.Required<V>, _ value: V) -> NSPredicate {
+        
+        return NSPredicate(format: "%K <= %@", argumentArray: [attribute.keyPath, value])
+    }
+    public static func >= (_ attribute: AttributeContainer<O>.Required<V>, _ value: V) -> NSPredicate {
+        
+        return NSPredicate(format: "%K >= %@", argumentArray: [attribute.keyPath, value])
+    }
+    public static func != (_ attribute: AttributeContainer<O>.Required<V>, _ value: V) -> NSPredicate {
+        
+        return NSPredicate(format: "%K != %@", argumentArray: [attribute.keyPath, value])
+    }
+}
+public extension AttributeContainer.Optional where V: CVarArg {
+    
+    public static func == (_ attribute: AttributeContainer<O>.Optional<V>, _ value: V?) -> NSPredicate {
+        
+        if let value = value {
+            
+            return NSPredicate(format: "%K == %@", argumentArray: [attribute.keyPath, value])
+        }
+        else {
+            
+            return NSPredicate(format: "%K == nil", attribute.keyPath)
+        }
+    }
+}
+
+protocol ModelVersionProtocol: class {
+    
+    static var version: String { get }
+    static var entities: [EntityProtocol] { get }
+}
+
+extension ModelVersionProtocol {
+    
+    static func entity<O: CoreStoreManagedObject>(for type: O.Type) -> Entity<O> {
+        
+        return self.entities.first(where: { $0 is Entity<O> })! as! Entity<O>
+    }
+}