我无法使用 RestKit 将我的 JSON 映射到核心数据。RK 记录说：
Did not find mappable relationship value keyPath.
我显然做错了什么。
日志：
2012-11-20 15:40:36.525 eMobile[44849:12603] T restkit.object_mapping:RKObjectMappingOperation.m:342 Mapping attribute value keyPath 'OBJECTCLASS' to 'type'
2012-11-20 15:40:36.525 eMobile[44849:12603] T restkit.object_mapping:RKObjectMappingOperation.m:359 Skipped mapping of attribute value from keyPath 'OBJECTCLASS to keyPath 'type' -- value is unchanged (SFAACCOUNT)
2012-11-20 15:40:36.525 eMobile[44849:12603] T restkit.object_mapping:RKObjectMappingOperation.m:342 Mapping attribute value keyPath 'TIMESTAMP' to 'timestamp'
2012-11-20 15:40:36.526 eMobile[44849:12603] T restkit.object_mapping:RKObjectMappingOperation.m:352 Mapped attribute value from keyPath 'TIMESTAMP' to 'timestamp'. Value: 2012-11-20T15:40:08Z
2012-11-20 15:40:36.526 eMobile[44849:12603] D restkit.object_mapping:RKObjectMappingOperation.m:483 Did not find mappable relationship value keyPath 'VALUES'
2012-11-20 15:40:36.526 eMobile[44849:12603] D restkit.object_mapping:RKObjectMappingOperation.m:662 Finished mapping operation successfully...
2012-11-20 15:40:36.526 eMobile[44849:12603] T restkit.object_mapping:RKObjectMapper.m:293 Examining keyPath 'VALUES' for mappable content...
2012-11-20 15:40:36.527 eMobile[44849:12603] D restkit.object_mapping:RKObjectMapper.m:303 Found unmappable value at keyPath: VALUES
2012-11-20 15:40:36.527 eMobile[44849:12603] D restkit.object_mapping:RKObjectMapper.m:367 The following operations are in the queue: (
)
2012-11-20 15:40:36.527 eMobile[44849:12603] D restkit.object_mapping:RKObjectMapper.m:382 Finished performing object mapping. Results: {
JSONDATA = (
"<EntityClass: 0x127da9e0> (entity: EntityClass; id: 0x127527d0 <x-coredata://E20EA003-1D5A-4B27-92DF-DFD8BE7074CB/EntityClass/p2> ; data: {\n timestamp = \"2012-11-20T15:40:08Z\";\n type = VCFUND;\n values = \"<relationship fault: 0x12703200 'values'>\";\n})",
"<EntityClass: 0x127da6b0> (entity: EntityClass; id: 0x12695dc0 <x-coredata://E20EA003-1D5A-4B27-92DF-DFD8BE7074CB/EntityClass/p1> ; data: {\n timestamp = \"2012-11-20T15:40:08Z\";\n type = SFAACCOUNT;\n values = \"<relationship fault: 0x11efb910 'values'>\";\n})"
);
}
2012-11-20 15:40:36.530 eMobile[44849:11603] (
"<EntityClass: 0x126b7400> (entity: EntityClass; id: 0x127527d0 <x-coredata://E20EA003-1D5A-4B27-92DF-DFD8BE7074CB/EntityClass/p2> ; data: <fault>)",
"<EntityClass: 0x127de030> (entity: EntityClass; id: 0x12695dc0 <x-coredata://E20EA003-1D5A-4B27-92DF-DFD8BE7074CB/EntityClass/p1> ; data: <fault>)"
)
JSON 示例：
{
"JSONDATA": [
{
"OBJECTCLASS": "VCFUND",
"DESCRIPTION": {
"VALUES": [
{
"DATA": [
{
"NAME": "Fund 1",
"VALUE": "Buyout Fund 1"
},
{
"NAME": "Fund 2",
"VALUE": "Buyout Fund 2"
},
{
"NAME": "Fund 3",
"VALUE": "Buyout Fund 3"
}
],
"IQID": "059386B4D26249358C68E978D3C10C84"
}
]
},
"TIMESTAMP": "2012-11-17T22:03:55Z"
},
{
"OBJECTCLASS": "PROPERTIES",
"DESCRIPTION": {
"VALUES": [
{
"DATA": [
{
"NAME": "Property 1",
"VALUE": "Buyout Property 1"
},
{
"NAME": "Property 2",
"VALUE": "Buyout Property 2"
},
{
"NAME": "Property 3",
"VALUE": "Buyout Property 3"
}
],
"IQID": "456789087654678909876589098"
}
]
},
"TIMESTAMP": "2012-11-17T22:03:55Z"
}
]
}
这是我的映射：
objectManager.objectStore = [RKManagedObjectStore objectStoreWithStoreFilename:@"AppCD.sqlite"];
RKManagedObjectMapping* entityClassItemValueMapping = [RKManagedObjectMapping mappingForClass:[EntityClassItemValue class] inManagedObjectStore:[[RKObjectManager sharedManager] objectStore]];
entityClassItemValueMapping.primaryKeyAttribute = @"name";
[entityClassItemValueMapping mapKeyPath:@"NAME" toAttribute:@"name"];
[entityClassItemValueMapping mapKeyPath:@"VALUE" toAttribute:@"value"];
RKManagedObjectMapping* entityClassItemMapping = [RKManagedObjectMapping mappingForClass:[EntityClassItem class] inManagedObjectStore:[[RKObjectManager sharedManager] objectStore]];
entityClassItemMapping.primaryKeyAttribute = @"iqid";
[entityClassItemMapping mapKeyPath:@"IQID" toAttribute:@"iqid"];
RKManagedObjectMapping* entityClassMapping = [RKManagedObjectMapping mappingForClass:[EntityClass class] inManagedObjectStore:[[RKObjectManager sharedManager] objectStore]];
entityClassMapping.primaryKeyAttribute = @"type";
[entityClassMapping mapKeyPath:@"OBJECTCLASS" toAttribute:@"type"];
[entityClassMapping mapKeyPath:@"TIMESTAMP" toAttribute:@"timestamp"];
[entityClassMapping mapKeyPath:@"VALUES" toRelationship:@"values" withMapping:entityClassItemMapping];
[entityClassItemMapping mapKeyPath:@"DATA" toRelationship:@"entityClassItemValues" withMapping:entityClassItemValueMapping];
[[RKObjectManager sharedManager].mappingProvider setMapping:entityClassMapping forKeyPath:@"JSONDATA"];
[[RKObjectManager sharedManager].mappingProvider setMapping:entityClassItemMapping forKeyPath:@"VALUES"];
[[RKObjectManager sharedManager].mappingProvider setMapping:entityClassItemValueMapping forKeyPath:@"DATA"];
[[objectManager client] setValue:[cookies objectForKey:@"Cookie"] forHTTPHeaderField:@"Cookie"];
NSDictionary *params = [[NSDictionary alloc] initWithObjectsAndKeys:query, @"Targ", @"", @"Query", @"F285E67F2C8CEC9837B68", @"$SESSION", @"3A7037FA806156C4", @"VERSION", nil];
[objectManager loadObjectsAtResourcePath:URL_DATA usingBlock:^(RKObjectLoader *loader) {
loader.method = RKRequestMethodPOST;
loader.params = params;
loader.mappingProvider = [RKObjectManager sharedManager].mappingProvider;
loader.onDidLoadObjects = loadBlock;
loader.onDidFailWithError = failBlock;
}];
我的 CoreData 模型是：
#import <Foundation/Foundation.h>
#import <CoreData/CoreData.h>
@class EntityClassItem;
@interface EntityClass : NSManagedObject
@property (nonatomic, retain) NSString * timestamp;
@property (nonatomic, retain) NSString * type;
@property (nonatomic, retain) NSSet *values;
@end
@interface EntityClass (CoreDataGeneratedAccessors)
- (void)addValuesObject:(EntityClassItem *)value;
- (void)removeValuesObject:(EntityClassItem *)value;
- (void)addValues:(NSSet *)values;
- (void)removeValues:(NSSet *)values;
#import <Foundation/Foundation.h>
#import <CoreData/CoreData.h>
@class EntityClassItem;
@interface EntityClass : NSManagedObject
@property (nonatomic, retain) NSString * timestamp;
@property (nonatomic, retain) NSString * type;
@property (nonatomic, retain) NSSet *values;
@end
@interface EntityClass (CoreDataGeneratedAccessors)
- (void)addValuesObject:(EntityClassItem *)value;
- (void)removeValuesObject:(EntityClassItem *)value;
- (void)addValues:(NSSet *)values;
- (void)removeValues:(NSSet *)values;
#import <Foundation/Foundation.h>
#import <CoreData/CoreData.h>
@class EntityClassItem;
@interface EntityClassItemValue : NSManagedObject
@property (nonatomic, retain) NSString * name;
@property (nonatomic, retain) NSString * value;
@property (nonatomic, retain) EntityClassItem *entityClassItem;