VSTagAuthority.h

//
//  VSTagAuthority.h
//  Vesper
//
//  Created by Brent Simmons on 2/28/14.
//  Copyright (c) 2014 Q Branch LLC. All rights reserved.
//


/*
  Create only one of these.
  Tags must be created using tagWithName only.
 
  The worst-case scenario is when a tag doesn't exist.
  It will block as it inserts the tag and saves its context.
*/


@class VSTag;


@interface VSTagAuthority : NSObject


- (instancetype)initWithPersistentStoreCoordinator:(NSPersistentStoreCoordinator *)storeCoordinator;

/*These methods do [context objectWithID:], which means these should be called from within
 a performBlock block (or whatever is appropriate for the context).*/

- (VSTag *)existingTagWithName:(NSString *)name context:(NSManagedObjectContext *)context;

- (VSTag *)tagWithName:(NSString *)name context:(NSManagedObjectContext *)context error:(NSError **)error;
 /*Creates tag if needed. Error can happen on context save.*/


@end

Thanks for taking the time to write about your progress! Care to share the method implementations? I'm deciding whether Core Data is a good choice if I pass around view model objects which map to the store via ID only.

Update: stupid me, it's just in another Gist: https://gist.github.com/brentsimmons/9283338