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//
// RKInMemoryManagedObjectCache.m
// RestKit
//
// Created by Jeff Arena on 1/24/12.
// Copyright (c) 2009-2012 RestKit. All rights reserved.
//
#import "RKInMemoryManagedObjectCache.h"
#import "NSEntityDescription+RKAdditions.h"
#import "RKEntityCache.h"
#import "RKLog.h"
// Set Logging Component
#undef RKLogComponent
#define RKLogComponent lcl_cRestKitCoreData
static NSString * const RKInMemoryObjectManagedObjectCacheThreadDictionaryKey = @"RKInMemoryObjectManagedObjectCacheThreadDictionaryKey";
@implementation RKInMemoryManagedObjectCache
- (RKEntityCache *)cacheForEntity:(NSEntityDescription *)entity inManagedObjectContext:(NSManagedObjectContext *)managedObjectContext
{
NSAssert(entity, @"Cannot find existing managed object without a target class");
NSAssert(managedObjectContext, @"Cannot find existing managed object with a context");
NSMutableDictionary *contextDictionary = [[[NSThread currentThread] threadDictionary] objectForKey:RKInMemoryObjectManagedObjectCacheThreadDictionaryKey];
if (! contextDictionary) {
contextDictionary = [NSMutableDictionary dictionaryWithCapacity:1];
[[[NSThread currentThread] threadDictionary] setObject:contextDictionary forKey:RKInMemoryObjectManagedObjectCacheThreadDictionaryKey];
}
NSNumber *hashNumber = [NSNumber numberWithUnsignedInteger:[managedObjectContext hash]];
RKEntityCache *entityCache = [contextDictionary objectForKey:hashNumber];
if (! entityCache) {
RKLogInfo(@"Creating thread-local entity cache for managed object context: %@", managedObjectContext);
entityCache = [[RKEntityCache alloc] initWithManagedObjectContext:managedObjectContext];
[contextDictionary setObject:entityCache forKey:hashNumber];
[entityCache release];
}
return entityCache;
}
- (NSManagedObject *)findInstanceOfEntity:(NSEntityDescription *)entity
withPrimaryKeyAttribute:(NSString *)primaryKeyAttribute
value:(id)primaryKeyValue
inManagedObjectContext:(NSManagedObjectContext *)managedObjectContext
{
RKEntityCache *entityCache = [self cacheForEntity:entity inManagedObjectContext:managedObjectContext];
if (! [entityCache isEntity:entity cachedByAttribute:primaryKeyAttribute]) {
RKLogInfo(@"Caching instances of Entity '%@' by primary key attribute '%@'", entity.name, primaryKeyAttribute);
[entityCache cacheObjectsForEntity:entity byAttribute:primaryKeyAttribute];
RKEntityByAttributeCache *attributeCache = [entityCache attributeCacheForEntity:entity attribute:primaryKeyAttribute];
RKLogTrace(@"Cached %ld objects", (long)[attributeCache count]);
}
return [entityCache objectForEntity:entity withAttribute:primaryKeyAttribute value:primaryKeyValue];
}
- (void)didFetchObject:(NSManagedObject *)object
{
RKEntityCache *entityCache = [self cacheForEntity:object.entity inManagedObjectContext:object.managedObjectContext];
[entityCache addObject:object];
}
- (void)didCreateObject:(NSManagedObject *)object
{
RKEntityCache *entityCache = [self cacheForEntity:object.entity inManagedObjectContext:object.managedObjectContext];
[entityCache addObject:object];
}
- (void)didDeleteObject:(NSManagedObject *)object
{
RKEntityCache *entityCache = [self cacheForEntity:object.entity inManagedObjectContext:object.managedObjectContext];
[entityCache removeObject:object];
}
@end
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