cleanup

HardcoreData/NSManagedObject+Transaction.swift

@@ -0,0 +1,83 @@
+//
+//  NSManagedObject+Transaction.swift
+//  HardcoreData
+//
+//  Copyright (c) 2014 John Rommel Estropia
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all
+//  copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+//  SOFTWARE.
+//
+
+import Foundation
+import CoreData
+
+
+// MARK: - NSManagedObject
+
+internal extension NSManagedObject {
+    
+    // MARK: - Internal
+    
+    internal class func createInContext(context: NSManagedObjectContext) -> Self {
+        
+        return self(
+            entity: context.entityDescriptionForEntityClass(self)!,
+            insertIntoManagedObjectContext: context
+        )
+    }
+    
+    internal func inContext(context: NSManagedObjectContext) -> Self? {
+        
+        return self.typedObjectInContext(context)
+    }
+    
+    internal func deleteFromContext() {
+        
+        self.managedObjectContext?.deleteObject(self)
+    }
+    
+    
+    // MARK: Private
+    
+    private func typedObjectInContext<T: NSManagedObject>(context: NSManagedObjectContext) -> T? {
+        
+        let objectID = self.objectID
+        if objectID.temporaryID {
+            
+            var permanentIDError: NSError?
+            if !context.obtainPermanentIDsForObjects([self], error: &permanentIDError) {
+                
+                HardcoreData.handleError(
+                    permanentIDError!,
+                    "Failed to obtain permanent ID for object.")
+                return nil
+            }
+        }
+        
+        var existingObjectError: NSError?
+        if let existingObject = context.existingObjectWithID(objectID, error: &existingObjectError) {
+            
+            return (existingObject as! T)
+        }
+        
+        HardcoreData.handleError(
+            existingObjectError!,
+            "Failed to load existing NSManagedObject in context.")
+        return nil;
+    }
+}