addSkipBackupAttributeToItemAtURL - Am I doing the right thing here?

[treasure]

i was wondering if im implementing this the right way. Any help would be greatly appreciated

Intoduction:

I got two persistentStoreCoordinators (for my strange reasons)

One for the default and one for the User.

I keep both sqlites at the Documents folder.

What i want is to keep the user.sqlite in the iCloud and sync it,

and NOT to keep the default.sqlite - so NO Sync-ing with iCloud...

Here is my code:

//Apple provided snipet

#include <sys/xattr.h>


- (BOOL)addSkipBackupAttributeToItemAtURL:(NSURL *)URL
{
const char* filePath = [[URL path] fileSystemRepresentation];

const char* attrName = "com.apple.MobileBackup";
u_int8_t attrValue = 1;

int result = setxattr(filePath, attrName, &attrValue, sizeof(attrValue), 0, 0);
return result == 0;

}


//------------
// My code now
//-------------


//Default persistentStore.....

- (NSPersistentStoreCoordinator *)persistentStoreCoordinator {

    if (persistentStoreCoordinator != nil) {
        return persistentStoreCoordinator;
    }

     NSString *storePath = [[self applicationDocumentsDirectory] stringByAppendingPathComponent:@"default.sqlite"];

     /*
      For the sake of illustration, provide a pre-populated default store.
      */

     NSFileManager *fileManager = [NSFileManager defaultManager];
     // If the expected store doesn't exist, copy the default store.
     if (![fileManager fileExistsAtPath:storePath]) {
          NSString *defaultStorePath = [[NSBundle mainBundle] pathForResource:@"default" ofType:@"sqlite"];
          if (defaultStorePath) {
               [fileManager copyItemAtPath:defaultStorePath toPath:storePath error:NULL];
          }
     }
}


     NSURL *storeUrl = [NSURL fileURLWithPath:storePath];
//Added this to prevent default to be backed-up

[self addSkipBackupAttributeToItemAtURL:storeUrl];

     NSError *error;



 persistentStoreCoordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel: [self managedObjectModel]];
    if (![persistentStoreCoordinator addPersistentStoreWithType:NSSQLiteStoreType configuration:nil URL:storeUrl options:nil error:&error])     
{

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

    return persistentStoreCoordinator;
}



//User persistentStore....


- (NSPersistentStoreCoordinator *)userPersistentStoreCoordinator {

     if (userPersistentStoreCoordinator != nil) {
          return userPersistentStoreCoordinator;
     }

     NSURL *storeUrl = [NSURL fileURLWithPath: [[self applicationDocumentsDirectory] stringByAppendingPathComponent: @"user.sqlite"]];

     // handle db upgrade
     NSDictionary *options = [NSDictionary dictionaryWithObjectsAndKeys:
                                    [NSNumber numberWithBool:YES], NSMigratePersistentStoresAutomaticallyOption,
                                    [NSNumber numberWithBool:YES], NSInferMappingModelAutomaticallyOption, nil];

     NSError *error = nil;
     userPersistentStoreCoordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel: [self userManagedObjectModel]];
     if (![userPersistentStoreCoordinator addPersistentStoreWithType:NSSQLiteStoreType configuration:nil URL:storeUrl options:options error:&error]) {
          // Handle error
     }

     return userPersistentStoreCoordinator;
}

is this the correct way to do it?

Thanks