iOS CoreData batch insert?

Question

In my iPhone application, i need to insert ~2000 records into Core Data before the user can use any features of the application. I am loading the records into CoreData from

Answer 1

I like @Suragch 's answer very much. This is the Objective-C version for it.

    NSManagedObjectContext *managedObjectContext = [[NSManagedObjectContext alloc] initWithConcurrencyType: NSPrivateQueueConcurrencyType];
    managedObjectContext.persistentStoreCoordinator = [[UIApplication sharedApplication].delegate.persistentStoreCoordinator];

    [managedObjectContext performBlock:^{
        while (true) {
            @autoreleasepool {
                // Code that creates autoreleased objects.
                NSArray *batchObjects = [self getNextBatchOfObjects];

                if (!batchObjects) {
                    break;
                }

                for (id item in batchObjects) {
                    MyEntity *newItem = [NSEntityDescription insertNewObjectForEntityForName:@"MyEntity" inManagedObjectContext:managedObjectContext];
                    newObject.attribute1 = item.whatever;
                    newObject.attribute2 = item.whoever
                    newObject.attribute3 = item.whenever
                }
            }

            // only save once per batch insert
            NSError *error = nil;
            [managedObjectContext save:&error];
            [managedObjectContext reset];
        }
    }];