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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.
38 lines
1.7 KiB
Objective-C
38 lines
1.7 KiB
Objective-C
//
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// RKInMemoryManagedObjectCache.m
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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 "RKInMemoryManagedObjectCache.h"
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#import "RKLog.h"
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// Set Logging Component
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#undef RKLogComponent
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#define RKLogComponent lcl_cRestKitCoreData
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static NSString * const RKInMemoryObjectManagedObjectCacheThreadDictionaryKey = @"RKInMemoryObjectManagedObjectCacheThreadDictionaryKey";
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@implementation RKInMemoryManagedObjectCache
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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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NSAssert(entity, @"Cannot find existing managed object without a target class");
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NSAssert(primaryKeyAttribute, @"Cannot find existing managed object instance without mapping");
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NSAssert(primaryKeyValue, @"Cannot find existing managed object by primary key without a value");
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NSAssert(managedObjectContext, @"Cannot find existing managed object with a context");
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RKInMemoryEntityCache *cache = [[[NSThread currentThread] threadDictionary] objectForKey:RKInMemoryObjectManagedObjectCacheThreadDictionaryKey];
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if (! cache) {
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cache = [[RKInMemoryEntityCache alloc] initWithManagedObjectContext:managedObjectContext];
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[[[NSThread currentThread] threadDictionary] setObject:cache forKey:RKInMemoryObjectManagedObjectCacheThreadDictionaryKey];
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[cache release];
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}
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return [cache cachedObjectForEntity:entity withAttribute:primaryKeyAttribute value:primaryKeyValue inContext:managedObjectContext];
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}
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@end
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