I am using restkit 0.10.2 for my application. I have different tables in which data is extracted from the Server and stored in the database.
I have three tables One Master Table and two child tables. Both child tables have the same relationship with the main table.
I have two different view controllers V1 and V2 in which I call webservice and map the data to the table Child1 and Child2. The table Child1, Child2 and Master has the user ID as the primary key.
When I click ViewController V1 / V2, the following process is executed.
1) Getting Data from Server. 2) Delete UserID from Child1/Child2 table(if any), not deleting details in Master Table. Delete Rule is nullify. 3) Map userID to Child1/Child2 Table and Other Details(name, age, userId etc) with Master Table.
Display Code:
RKManagedObjectMapping *userDetailMapping = [RKManagedObjectMapping mappingForClass:[Master class] inManagedObjectStore:manager.objectStore]; [userDetailMapping mapKeyPath:@"uid" toAttribute:@"userID"]; [userDetailMapping mapKeyPath:@"ne" toAttribute:@"name"]; [userDetailMapping mapKeyPath:@"email" toAttribute:@"email"]; [manager.mappingProvider setMapping:userDetailMapping forKeyPath:@"users"]; userDetailMapping.primaryKeyAttribute = @"userID"; RKManagedObjectMapping *userkeyMapping1 = [RKManagedObjectMapping mappingForClass:[Child1 class] inManagedObjectStore:manager.objectStore]; [userkeyMapping1 mapKeyPath:@"uk" toAttribute:@"userID"]; userkeyMapping1.primaryKeyAttribute = @"userID"; [manager.mappingProvider setMapping:userkeyMapping1 forKeyPath:@"usk1"]; RKManagedObjectMapping *userkeyMapping2 = [RKManagedObjectMapping mappingForClass:[Child2 class] inManagedObjectStore:manager.objectStore]; [userkeyMapping2 mapKeyPath:@"uk" toAttribute:@"userID"]; userkeyMapping2.primaryKeyAttribute = @"userID"; [manager.mappingProvider setMapping:userkeyMapping2 forKeyPath:@"usk2"];
Relationship ratio
[userkeyMapping1 hasOne:@"userDetail" withMapping:userDetailMapping]; [userkeyMapping1 connectRelationship:@"userDetail" withObjectForPrimaryKeyAttribute:@"userID"]; [userDetailMapping hasOne:@"userDetail1" withMapping:userkeyMapping1]; [userDetailMapping connectRelationship:@"userDetail1" withObjectForPrimaryKeyAttribute:@"userID"]; [userkeyMapping2 hasOne:@"userDetail" withMapping:userDetailMapping]; [userkeyMapping2 connectRelationship:@"userDetail" withObjectForPrimaryKeyAttribute:@"userID"]; [userDetailMapping hasOne:@"userDetail2" withMapping:userkeyMapping2]; [userDetailMapping connectRelationship:@"userDetail2" withObjectForPrimaryKeyAttribute:@"userID"];
Removing an object from the database for Child1 and Child2
- (void)clearUserKeyTable { RKObjectManager *manager = [[RestKit sharedDataManager] objectManager]; NSManagedObjectContext *context = [Child1 currentContext]; NSArray *objects = [Child1 findAll]; for (Child1 *object in objects) { [context deleteObject:object]; } NSError *saveError = nil; [context save:&saveError]; NIDPRINT(@"All records are deleted - %@", saveError); for (Child1 *object in objects) { [context refreshObject:object mergeChanges:NO]; } [context save:&saveError]; NIDPRINT(@"All records are deleted in Nearby- %@", saveError); }
Note. Both viewing modes 1 are automatically updated after 3 minutes. therefore, typing and display operations will be performed regardless of the screen.
Problem: Several times, when I manually refresh a page in VC1, it crashes. I do not know. In My Simulator, it appears as
'NSObjectInaccessibleException', reason: 'CoreData could not fulfill a fault for '0x8a5b410 <x-coredata:/XXXX-XXXX-XXXX/Child1/p128>.
When I debug my device, it throws an exception. Here is the crash log
Path: /var/mobile/Applications/25FD9991-8134-476D-AADE-66D95BFC3C5B/MyApp.app/MyApp Identifier: MyApp Version: ??? (???) Code Type: ARM (Native) Parent Process: launchd [1] Date/Time: 2013-02-25 23:17:27.645 -0600 OS Version: iOS 6.0.1 (10A523) Report Version: 104 Exception Type: EXC_CRASH (SIGABRT) Exception Codes: 0x0000000000000000, 0x0000000000000000 Crashed Thread: 10 Last Exception Backtrace: 0 CoreFoundation 0x3147329e __exceptionPreprocess + 158 1 libobjc.A.dylib 0x3233197a objc_exception_throw + 26 2 CoreData 0x32741b38 _PFFaultHandlerLookupRow + 1472 3 CoreData 0x327430fa _PF_FulfillDeferredFault + 198 4 CoreData 0x3274ac0c _PF_ManagedObject_WillChangeValueForKeyIndex + 64 5 CoreData 0x3275532e _sharedIMPL_setvfk_core + 106 6 CoreData 0x327497c2 _PF_Handler_Public_SetProperty + 54 7 CoreData 0x32750a4c -[NSManagedObject(_NSInternalMethods) _maintainInverseRelationship:forProperty:oldDestination:newDestination:] + 328 8 CoreData 0x32751216 -[NSManagedObject(_NSInternalMethods) _didChangeValue:forRelationship:named:withInverse:] + 1286 9 CoreData 0x3275a82e -[NSManagedObjectContext observeValueForKeyPath:ofObject:change:context:] + 318 10 Foundation 0x32fd4eac NSKeyValueNotifyObserver + 268 11 Foundation 0x32fd4b06 NSKeyValueDidChange + 330 12 Foundation 0x32faeec6 -[NSObject(NSKeyValueObserverNotification) didChangeValueForKey:] + 90 13 CoreData 0x3274ae26 _PF_ManagedObject_DidChangeValueForKeyIndex + 98 14 CoreData 0x327553a2 _sharedIMPL_setvfk_core + 222 15 CoreData 0x327497c2 _PF_Handler_Public_SetProperty + 54 16 CoreData 0x32750ad6 -[NSManagedObject(_NSInternalMethods) _maintainInverseRelationship:forProperty:oldDestination:newDestination:] + 466 17 CoreData 0x32751216 -[NSManagedObject(_NSInternalMethods) _didChangeValue:forRelationship:named:withInverse:] + 1286 18 CoreData 0x3275a82e -[NSManagedObjectContext observeValueForKeyPath:ofObject:change:context:] + 318 19 Foundation 0x32fd4eac NSKeyValueNotifyObserver + 268 20 Foundation 0x32fd4b06 NSKeyValueDidChange + 330 21 Foundation 0x32faeec6 -[NSObject(NSKeyValueObserverNotification) didChangeValueForKey:] + 90 22 CoreData 0x3274ae26 _PF_ManagedObject_DidChangeValueForKeyIndex + 98 23 CoreData 0x327553a2 _sharedIMPL_setvfk_core + 222 24 CoreData 0x327497c2 _PF_Handler_Public_SetProperty + 54 25 CoreData 0x3274bd1e -[NSManagedObject setValue:forKey:] + 86 26 Foundation 0x32faf71e -[NSObject(NSKeyValueCoding) setValue:forKeyPath:] + 294 27 MyApp 0x0019aa5c -[RKManagedObjectMappingOperation connectRelationship:] (RKManagedObjectMappingOperation.m:100) 28 MyApp 0x0019af16 __55-[RKManagedObjectMappingOperation connectRelationships]_block_invoke_0 (RKManagedObjectMappingOperation.m:115) 29 Foundation 0x32fdc534 -[NSBlockOperation main] + 196 30 Foundation 0x32fd3db4 -[__NSOperationInternal start] + 836 31 MyApp 0x001b063c -[RKMappingOperationQueue waitUntilAllOperationsAreFinished] (RKMappingOperationQueue.m:53) 32 MyApp 0x001b6496 -[RKObjectMapper performMapping] (RKObjectMapper.m:368) 33 MyApp 0x001b14f0 -[RKObjectLoader mapResponseWithMappingProvider:toObject:inContext:error:] (RKObjectLoader.m:227) 34 MyApp 0x001b18c2 -[RKObjectLoader performMapping:] (RKObjectLoader.m:271) 35 MyApp 0x001b1a9e __47-[RKObjectLoader performMappingInDispatchQueue]_block_invoke_0 (RKObjectLoader.m:282) 36 libdispatch.dylib 0x33a6311a _dispatch_call_block_and_release + 6 37 libdispatch.dylib 0x33a62996 _dispatch_queue_drain$VARIANT$up + 142 38 libdispatch.dylib 0x33a62890 _dispatch_queue_invoke$VARIANT$up + 32 39 libdispatch.dylib 0x33a71210 _dispatch_root_queue_drain + 188 40 libdispatch.dylib 0x33a713b4 _dispatch_worker_thread2 + 80 41 libsystem_c.dylib 0x33aa1a0c _pthread_wqthread + 356 42 libsystem_c.dylib 0x33aa18a0 start_wqthread + 4
Topic 10 Crash
Thread 10 name: Dispatch queue: org.restkit.ObjectMapping Thread 10 Crashed: 0 libsystem_kernel.dylib 0x30661350 __pthread_kill + 8 1 libsystem_c.dylib 0x33aca11e pthread_kill + 54 2 libsystem_c.dylib 0x33b0696e abort + 90 3 libc++abi.dylib 0x314e7d4a abort_message + 70 4 libc++abi.dylib 0x314e4ff4 _ZL17default_terminatev + 20 5 libobjc.A.dylib 0x32331a74 _ZL15_objc_terminatev + 144 6 libc++abi.dylib 0x314e5078 _ZL19safe_handler_callerPFvvE + 76 7 libc++abi.dylib 0x314e5110 std::terminate() + 16 8 libc++abi.dylib 0x314e6594 __cxa_rethrow + 84 9 libobjc.A.dylib 0x323319cc objc_exception_rethrow + 8 10 CoreData 0x32741f60 _PFFaultHandlerLookupRow + 2536 11 CoreData 0x327430fa _PF_FulfillDeferredFault + 198 12 CoreData 0x3274ac0c _PF_ManagedObject_WillChangeValueForKeyIndex + 64 13 CoreData 0x3275532e _sharedIMPL_setvfk_core + 106 14 CoreData 0x327497c2 _PF_Handler_Public_SetProperty + 54 15 CoreData 0x32750a4c -[NSManagedObject(_NSInternalMethods) _maintainInverseRelationship:forProperty:oldDestination:newDestination:] + 328 16 CoreData 0x32751216 -[NSManagedObject(_NSInternalMethods) _didChangeValue:forRelationship:named:withInverse:] + 1286 17 CoreData 0x3275a82e -[NSManagedObjectContext observeValueForKeyPath:ofObject:change:context:] + 318 18 Foundation 0x32fd4eac NSKeyValueNotifyObserver + 268 19 Foundation 0x32fd4b06 NSKeyValueDidChange + 330 20 Foundation 0x32faeec6 -[NSObject(NSKeyValueObserverNotification) didChangeValueForKey:] + 90 21 CoreData 0x3274ae28 _PF_ManagedObject_DidChangeValueForKeyIndex + 100 22 CoreData 0x327553a2 _sharedIMPL_setvfk_core + 222 23 CoreData 0x327497c2 _PF_Handler_Public_SetProperty + 54 24 CoreData 0x32750ad6 -[NSManagedObject(_NSInternalMethods) _maintainInverseRelationship:forProperty:oldDestination:newDestination:] + 466 25 CoreData 0x32751216 -[NSManagedObject(_NSInternalMethods) _didChangeValue:forRelationship:named:withInverse:] + 1286 26 CoreData 0x3275a82e -[NSManagedObjectContext observeValueForKeyPath:ofObject:change:context:] + 318 27 Foundation 0x32fd4eac NSKeyValueNotifyObserver + 268 28 Foundation 0x32fd4b06 NSKeyValueDidChange + 330 29 Foundation 0x32faeec6 -[NSObject(NSKeyValueObserverNotification) didChangeValueForKey:] + 90 30 CoreData 0x3274ae28 _PF_ManagedObject_DidChangeValueForKeyIndex + 100 31 CoreData 0x327553a2 _sharedIMPL_setvfk_core + 222 32 CoreData 0x327497c2 _PF_Handler_Public_SetProperty + 54 33 CoreData 0x3274bd1e -[NSManagedObject setValue:forKey:] + 86 34 Foundation 0x32faf71e -[NSObject(NSKeyValueCoding) setValue:forKeyPath:] + 294 35 MyApp 0x0019aa5c -[RKManagedObjectMappingOperation connectRelationship:] (RKManagedObjectMappingOperation.m:100) 36 MyApp 0x0019af16 __55-[RKManagedObjectMappingOperation connectRelationships]_block_invoke_0 (RKManagedObjectMappingOperation.m:115) 37 Foundation 0x32fdc536 -[NSBlockOperation main] + 198 38 Foundation 0x32fd3db4 -[__NSOperationInternal start] + 836 39 MyApp 0x001b063c -[RKMappingOperationQueue waitUntilAllOperationsAreFinished] (RKMappingOperationQueue.m:53) 40 MyApp 0x001b6496 -[RKObjectMapper performMapping] (RKObjectMapper.m:368) 41 MyApp 0x001b14f0 -[RKObjectLoader mapResponseWithMappingProvider:toObject:inContext:error:] (RKObjectLoader.m:227) 42 MyApp 0x001b18c2 -[RKObjectLoader performMapping:] (RKObjectLoader.m:271) 43 MyApp 0x001b1a9e __47-[RKObjectLoader performMappingInDispatchQueue]_block_invoke_0 (RKObjectLoader.m:282) 44 libdispatch.dylib 0x33a6311c _dispatch_call_block_and_release + 8 45 libdispatch.dylib 0x33a62996 _dispatch_queue_drain$VARIANT$up + 142 46 libdispatch.dylib 0x33a62890 _dispatch_queue_invoke$VARIANT$up + 32 47 libdispatch.dylib 0x33a71212 _dispatch_root_queue_drain + 190 48 libdispatch.dylib 0x33a713b4 _dispatch_worker_thread2 + 80 49 libsystem_c.dylib 0x33aa1a0e _pthread_wqthread + 358 50 libsystem_c.dylib 0x33aa18a0 start_wqthread + 4
thanks