问现有应用程序的核心数据更新在iOS7.1上失败

EN

NSError *error = nil;
_persistentStoreCoordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel:[self managedObjectModel]];
NSDictionary *options = @{
                          NSMigratePersistentStoresAutomaticallyOption : @YES,
                          NSInferMappingModelAutomaticallyOption : @YES
                          };


// Check if we need a migration
NSDictionary *sourceMetadata = [NSPersistentStoreCoordinator metadataForPersistentStoreOfType:NSSQLiteStoreType URL:storeURL error:&error];
NSManagedObjectModel *destinationModel = [_persistentStoreCoordinator managedObjectModel];
BOOL isModelCompatible = (sourceMetadata == nil) || [destinationModel isConfiguration:nil compatibleWithStoreMetadata:sourceMetadata];
if (! isModelCompatible) {
    // We need a migration, so we set the journal_mode to DELETE
    options = @{NSMigratePersistentStoresAutomaticallyOption:@YES,
                NSInferMappingModelAutomaticallyOption:@YES,
                NSSQLitePragmasOption: @{@"journal_mode": @"DELETE"}
                };
}

NSPersistentStore *persistentStore = [_persistentStoreCoordinator addPersistentStoreWithType:NSSQLiteStoreType configuration:nil URL:storeURL options:options error:&error];
if (! persistentStore) {


    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documents = [paths objectAtIndex:0];
    NSString *databasePath = [documents stringByAppendingPathComponent:@"Store"];
    NSString *sqlite = [databasePath stringByAppendingPathComponent:@"myDatabase.sqlite"];

    [[NSFileManager defaultManager] removeItemAtPath:sqlite error:nil];

    NSLog(@"Unresolved error %@, %@", error, [error userInfo]);
    //abort();
}

// Reinstate the WAL journal_mode
if (! isModelCompatible) {
    [_persistentStoreCoordinator removePersistentStore:persistentStore error:NULL];
    options = @{NSMigratePersistentStoresAutomaticallyOption:@YES,
                NSInferMappingModelAutomaticallyOption:@YES,
                NSSQLitePragmasOption: @{@"journal_mode": @"WAL"}
                };
    [_persistentStoreCoordinator addPersistentStoreWithType:NSSQLiteStoreType configuration:nil URL:storeURL options:options error:&error];
}

return _persistentStoreCoordinator;

NSUnderlyingException = "File at path does not appear to be a SQLite database: /var/mobile/Applications/9B623099-5591-4C55-BA83-77A057B94690/Documents/Store/myDatabase.sqlite";}