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Core Data Migration: How to delete the Core Data stack?

NSURL *storeURL = ...;

NSManagedObjectModel *managedObjectModel = ...;

NSError *error = nil;

_persistentStoreCoordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel: managedObjectModel];

 

// Check if we already have a persistent store

if ( [[NSFileManager defaultManager] fileExistsAtPath: [storeURL path]] ) {

    NSDictionary *existingPersistentStoreMetadata = [NSPersistentStoreCoordinator metadataForPersistentStoreOfType: NSSQLiteStoreType URL: storeURL error: &error];

    if ( !existingPersistentStoreMetadata ) {

        // Something *really* bad has happened to the persistent store

        [NSException raise: NSInternalInconsistencyException format: @"Failed to read metadata for persistent store %@: %@", storeURL, error];

    }

 

    if ( ![managedObjectModel isConfiguration: nil compatibleWithStoreMetadata: existingPersistentStoreMetadata] ) {

        if ( ![[NSFileManager defaultManager] removeItemAtURL: storeURL error: &error] )

            NSLog(@"*** Could not delete persistent store, %@", error);

    } // else the existing persistent store is compatible with the current model - nice!

} // else no database file yet

 

[_persistentStoreCoordinator addPersistentStoreWithType: NSSQLiteStoreType

                                          configuration: nil

                                                    URL: storeURL

                                                options: nil

                                                  error: &error];