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https://github.com/zhigang1992/RestKit.git
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a545c3942b
classes to eliminate issues with duplicated objects. closes #611, #612, #613, #618 * NSEntityDescription is now aware of the primaryKeyAttribute. Can be configured via Interface Builder within Xcode or programatically. * Added findByPrimaryKey: interface to the Core Data extensions. * Relaxed dependencies on RKManagedObjectMapping across the system now that primaryKey is available without a reference to the mapping.
36 lines
1.5 KiB
Objective-C
36 lines
1.5 KiB
Objective-C
//
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// RKManagedObjectCacheing.h
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// RestKit
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//
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// Created by Jeff Arena on 1/24/12.
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// Copyright (c) 2012 RestKit. All rights reserved.
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//
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#import <CoreData/CoreData.h>
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/**
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Objects implementing the RKManagedObjectCacheing protocol can act as the cache
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strategy for RestKit managed object stores. The managed object cache is consulted
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when objects are retrieved from Core Data during object mapping operations and provide
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an opportunity to accelerate the mapping process by trading memory for speed.
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*/
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@protocol RKManagedObjectCacheing
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/**
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Retrieves a model object from the object store given a Core Data entity and
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the primary key attribute and value for the desired object.
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@param entity The Core Data entity for the type of object to be retrieved from the cache.
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@param primaryKeyAttribute The name of the attribute that acts as the primary key for the entity.
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@param primaryKeyValue The value for the primary key attribute of the object to be retrieved from the cache.
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@param mmanagedObjectContext The managed object context to be searched for a matching instance.
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@return A managed object that is an instance of the given entity with a primary key and value matching
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the specified parameters, or nil if no object was found.
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*/
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- (NSManagedObject *)findInstanceOfEntity:(NSEntityDescription *)entity
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withPrimaryKeyAttribute:(NSString *)primaryKeyAttribute
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value:(id)primaryKeyValue
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inManagedObjectContext:(NSManagedObjectContext *)managedObjectContext;
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@end
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