gistfile1.m

- (NSManagedObjectContext*)managedObjectContext {
    if (_managedObjectContext) {
        return _managedObjectContext;
    }
    
    NSManagedObjectModel* managedObjectModel = [NSManagedObjectModel mergedModelFromBundles:nil];
    
    NSPersistentStoreCoordinator* persistantStoreCoordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel:managedObjectModel];
    
    NSArray* paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);;
    
    NSURL* url;
    NSString* path;
    if ([paths count] > 0) {
        path = [[[paths objectAtIndex:0] stringByAppendingPathComponent:@".hiwainyanko"]stringByAppendingPathComponent:@"hiwainyanko.sqlite"];
        url = [NSURL fileURLWithPath:path];
    }
    
    NSError* error;
    NSPersistentStore* persistantStore = [persistantStoreCoordinator addPersistentStoreWithType:NSSQLiteStoreType configuration:nil URL:url options:nil error:&error];
    if (!persistantStore && error) {
        NSLog(@"Failed to create add persistant store, %@", [error localizedDescription]);
    }

    _managedObjectContext = [[NSManagedObjectContext alloc] init];
    
    [_managedObjectContext setPersistentStoreCoordinator:persistantStoreCoordinator];
    
    return _managedObjectContext;
}