Merge branch 'develop' into corestore4_develop

# Conflicts:
#	CoreStore.podspec
#	Sources/CoreStoreImportableAttributeType.swift
#	Sources/CoreStoreQueryableAttributeType.swift
#	Sources/Info.plist
#	Sources/NSManagedObjectModel+Setup.swift

Sources/NSManagedObject+Convenience.swift

@@ -0,0 +1,233 @@
+//
+//  NSManagedObject+Convenience.swift
+//  CoreStore
+//
+//  Copyright © 2015 John Rommel Estropia
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all
+//  copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+//  SOFTWARE.
+//
+
+import Foundation
+import CoreData
+
+
+// MARK: - NSManagedObject
+
+public extension NSManagedObject {
+    
+    /**
+     Exposes a `FetchableSource` that can fetch sibling objects of this `NSManagedObject` instance. This may be the `DataStack`, a `BaseDataTransaction`, the `NSManagedObjectContext` itself, or `nil` if the obejct's parent is already deallocated.
+     - Warning: Future implementations may change the instance returned by this method depending on the timing or condition that `fetchSource()` was called. Do not make assumptions that the instance will be a specific instance. If the `NSManagedObjectContext` instance is desired, use the `FetchableSource.unsafeContext()` method to get the correct instance. Also, do not assume that the `fetchSource()` and `querySource()` return the same instance all the time.
+     - returns: a `FetchableSource` that can fetch sibling objects of this `NSManagedObject` instance. This may be the `DataStack`, a `BaseDataTransaction`, the `NSManagedObjectContext` itself, or `nil` if the object's parent is already deallocated.
+     */
+    @nonobjc
+    public func fetchSource() -> FetchableSource? {
+        
+        guard let context = self.managedObjectContext else {
+            
+            return nil
+        }
+        if context.isTransactionContext {
+            
+            return context.parentTransaction
+        }
+        if context.isDataStackContext {
+            
+            return context.parentStack
+        }
+        return context
+    }
+    
+    /**
+     Exposes a `QueryableSource` that can query attributes and aggregate values. This may be the `DataStack`, a `BaseDataTransaction`, the `NSManagedObjectContext` itself, or `nil` if the obejct's parent is already deallocated.
+     - Warning: Future implementations may change the instance returned by this method depending on the timing or condition that `querySource()` was called. Do not make assumptions that the instance will be a specific instance. If the `NSManagedObjectContext` instance is desired, use the `QueryableSource.unsafeContext()` method to get the correct instance. Also, do not assume that the `fetchSource()` and `querySource()` return the same instance all the time.
+     - returns: a `QueryableSource` that can query attributes and aggregate values. This may be the `DataStack`, a `BaseDataTransaction`, the `NSManagedObjectContext` itself, or `nil` if the object's parent is already deallocated.
+     */
+    @nonobjc
+    public func querySource() -> QueryableSource? {
+        
+        guard let context = self.managedObjectContext else {
+            
+            return nil
+        }
+        if context.isTransactionContext {
+            
+            return context.parentTransaction
+        }
+        if context.isDataStackContext {
+            
+            return context.parentStack
+        }
+        return context
+    }
+    
+    @nonobjc @inline(__always)
+    public func getValue(forKvcKey kvcKey: KeyPath) -> Any? {
+        
+        self.willAccessValue(forKey: kvcKey)
+        defer {
+            
+            self.didAccessValue(forKey: kvcKey)
+        }
+        return self.primitiveValue(forKey: kvcKey)
+    }
+    
+    @nonobjc @inline(__always)
+    public func getValue<T>(forKvcKey kvcKey: KeyPath, didGetValue: (Any?) throws -> T) rethrows -> T {
+        
+        self.willAccessValue(forKey: kvcKey)
+        defer {
+            
+            self.didAccessValue(forKey: kvcKey)
+        }
+        return try didGetValue(self.primitiveValue(forKey: kvcKey))
+    }
+    
+    @nonobjc @inline(__always)
+    public func getValue<T>(forKvcKey kvcKey: KeyPath, willGetValue: () throws -> Void, didGetValue: (Any?) throws -> T) rethrows -> T {
+        
+        self.willAccessValue(forKey: kvcKey)
+        defer {
+            
+            self.didAccessValue(forKey: kvcKey)
+        }
+        try willGetValue()
+        return try didGetValue(self.primitiveValue(forKey: kvcKey))
+    }
+    
+    @nonobjc @inline(__always)
+    public func setValue(_ value: Any?, forKvcKey KVCKey: KeyPath) {
+        
+        self.willChangeValue(forKey: KVCKey)
+        defer {
+            
+            self.didChangeValue(forKey: KVCKey)
+        }
+        self.setPrimitiveValue(value, forKey: KVCKey)
+    }
+    
+    @nonobjc @inline(__always)
+    public func setValue<T>(_ value: T, forKvcKey KVCKey: KeyPath, willSetValue: (T) throws -> Any?) rethrows {
+        
+        self.willChangeValue(forKey: KVCKey)
+        defer {
+            
+            self.didChangeValue(forKey: KVCKey)
+        }
+        self.setPrimitiveValue(try willSetValue(value), forKey: KVCKey)
+    }
+    
+    /**
+     Re-faults the object to use the latest values from the persistent store
+     */
+    @nonobjc
+    public func refreshAsFault() {
+        
+        self.managedObjectContext?.refresh(self, mergeChanges: false)
+    }
+    
+    /**
+     Re-faults the object to use the latest values from the persistent store and merges previously pending changes back
+     */
+    @nonobjc
+    public func refreshAndMerge() {
+        
+        self.managedObjectContext?.refresh(self, mergeChanges: true)
+    }
+    
+    
+    // MARK: Deprecated
+    
+    /**
+     Provides a convenience wrapper for accessing `primitiveValueForKey(...)` with proper calls to `willAccessValueForKey(...)` and `didAccessValueForKey(...)`. This is useful when implementing accessor methods for transient attributes.
+     
+     - parameter KVCKey: the KVC key
+     - returns: the primitive value for the KVC key
+     */
+    @available(*, deprecated: 3.1, renamed: "getValue(forKvcKey:)")
+    @nonobjc
+    public func accessValueForKVCKey(_ KVCKey: KeyPath) -> Any? {
+        
+        self.willAccessValue(forKey: KVCKey)
+        defer {
+            
+            self.didAccessValue(forKey: KVCKey)
+        }
+        return self.primitiveValue(forKey: KVCKey)
+    }
+    
+    /**
+     Provides a convenience wrapper for accessing `primitiveValueForKey(...)` with proper calls to `willAccessValueForKey(...)` and `didAccessValueForKey(...)`. This is useful when implementing accessor methods for transient attributes.
+     
+     - parameter KVCKey: the KVC key
+     - parameter didAccessPrimitiveValue: the closure to access the value. This is called between `willAccessValueForKey(...)` and `didAccessValueForKey(...)`
+     - returns: the primitive value for the KVC key
+     */
+    @available(*, deprecated: 3.1, renamed: "getValue(forKvcKey:didGetValue:)")
+    @discardableResult
+    @nonobjc
+    public func accessValueForKVCKey<T>(_ KVCKey: KeyPath, _ didAccessPrimitiveValue: (Any?) throws -> T) rethrows -> T {
+        
+        self.willAccessValue(forKey: KVCKey)
+        defer {
+            
+            self.didAccessValue(forKey: KVCKey)
+        }
+        return try didAccessPrimitiveValue(self.primitiveValue(forKey: KVCKey))
+    }
+    
+    /**
+     Provides a convenience wrapper for setting `setPrimitiveValue(...)` with proper calls to `willChangeValueForKey(...)` and `didChangeValueForKey(...)`. This is useful when implementing mutator methods for transient attributes.
+     
+     - parameter value: the value to set the KVC key with
+     - parameter KVCKey: the KVC key
+     */
+    @available(*, deprecated: 3.1, renamed: "setValue(_:forKvcKey:)")
+    @nonobjc
+    public func setValue(_ value: Any?, forKVCKey KVCKey: KeyPath) {
+        
+        self.willChangeValue(forKey: KVCKey)
+        defer {
+            
+            self.didChangeValue(forKey: KVCKey)
+        }
+        self.setPrimitiveValue(value, forKey: KVCKey)
+    }
+    
+    /**
+     Provides a convenience wrapper for setting `setPrimitiveValue(...)` with proper calls to `willChangeValueForKey(...)` and `didChangeValueForKey(...)`. This is useful when implementing mutator methods for transient attributes.
+     
+     - parameter value: the value to set the KVC key with
+     - parameter KVCKey: the KVC key
+     - parameter didSetPrimitiveValue: the closure called between `willChangeValueForKey(...)` and `didChangeValueForKey(...)`
+     */
+    @available(*, deprecated: 3.1, renamed: "setValue(_:forKvcKey:didSetValue:)")
+    @discardableResult
+    @nonobjc
+    public func setValue<T>(_ value: Any?, forKVCKey KVCKey: KeyPath, _ didSetPrimitiveValue: (Any?) throws -> T) rethrows -> T {
+        
+        self.willChangeValue(forKey: KVCKey)
+        defer {
+            
+            self.didChangeValue(forKey: KVCKey)
+        }
+        self.setPrimitiveValue(value, forKey: KVCKey)
+        return try didSetPrimitiveValue(value)
+    }
+}