restructured files, added way to transform section names in ManagedObjectListControllers

HardcoreData/Saving and Processing/DataStack+Transaction.swift

@@ -0,0 +1,81 @@
+//
+//  DataStack+Transaction.swift
+//  HardcoreData
+//
+//  Copyright (c) 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
+import GCDKit
+
+
+// MARK: - DataStack
+
+public extension DataStack {
+    
+    // MARK: Public
+    
+    /**
+    Begins a transaction asynchronously where NSManagedObject creates, updates, and deletes can be made.
+    
+    :param: closure the block 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.
+    */
+    public func beginAsynchronous(closure: (transaction: AsynchronousDataTransaction) -> Void) {
+        
+        HardcoreData.assert(GCDQueue.Main.isCurrentExecutionContext(), "Attempted to begin a transaction from a \(typeName(self)) outside the main queue.")
+        
+        AsynchronousDataTransaction(
+            mainContext: self.rootSavingContext,
+            queue: self.childTransactionQueue,
+            closure: closure).perform()
+    }
+    
+    /**
+    Begins a transaction synchronously where NSManagedObject creates, updates, and deletes can be made.
+    
+    :param: closure the block 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.
+    :returns: a SaveResult value indicating success or failure, or nil if the transaction was not comitted synchronously
+    */
+    public func beginSynchronous(closure: (transaction: SynchronousDataTransaction) -> Void) -> SaveResult? {
+        
+        HardcoreData.assert(GCDQueue.Main.isCurrentExecutionContext(), "Attempted to begin a transaction from a \(typeName(self)) outside the main queue.")
+        
+        return SynchronousDataTransaction(
+            mainContext: self.rootSavingContext,
+            queue: self.childTransactionQueue,
+            closure: closure).performAndWait()
+    }
+    
+    /**
+    Begins a non-contiguous transaction where NSManagedObject creates, updates, and deletes can be made. This is useful for making temporary changes, such as partially filled forms. A detached transaction object should typically be only used from the main queue.
+    
+    :returns: a DetachedDataTransaction instance where creates, updates, and deletes can be made.
+    */
+    public func beginDetached() -> DetachedDataTransaction {
+        
+        HardcoreData.assert(GCDQueue.Main.isCurrentExecutionContext(), "Attempted to begin a transaction from a \(typeName(self)) outside the main queue.")
+        
+        return DetachedDataTransaction(
+            mainContext: self.rootSavingContext,
+            queue: .Main)
+    }
+}