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65 lines
1.9 KiB
Objective-C
65 lines
1.9 KiB
Objective-C
//
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// RKMappingOperationQueue.h
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// RestKit
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//
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// Created by Blake Watters on 9/20/11.
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// Copyright (c) 2009-2012 RestKit. All rights reserved.
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//
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#import <Foundation/Foundation.h>
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/**
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Provides a simple interface for deferring portion of an larger object mapping
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operation until the entire aggregate operation has completed. This is used by Core
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Data to connect all object relationships once the entire object graph has been mapped,
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rather than as each object is encountered.
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Designed as a lightweight workalike for NSOperationQueue, which was not usable do to
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its reliance on threading for concurrent operations. The threading was causing problems
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with managed objects due to MOC being thread specific.
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This class is not intended to be thread-safe and is used for queueing non-concurrent
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operations that will be executed within the object mapper only. It is not a general purpose
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work queue.
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*/
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@interface RKMappingOperationQueue : NSObject {
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@protected
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NSMutableArray *_operations;
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}
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/**
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Adds an NSOperation to the queue for later execution
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@param op The operation to enqueue
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*/
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- (void)addOperation:(NSOperation *)op;
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/**
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Adds an NSBlockOperation to the queue configured to executed the block passed
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@param block A block to wrap into an operation for later execution
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*/
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- (void)addOperationWithBlock:(void (^)(void))block;
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/**
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Returns the collection of operations in the queue
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@return A new aray containing the NSOperation objects in the order in which they were added to the queue
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*/
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- (NSArray *)operations;
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/**
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Returns the number of operations in the queue
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@return The number of operations in the queue.
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*/
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- (NSUInteger)operationCount;
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/**
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Starts the execution of all operations in the queue in the order in which they were added to the queue. The
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current threads execution will be blocked until all enqueued operations have returned.
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*/
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- (void)waitUntilAllOperationsAreFinished;
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@end
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