2014/10/15 下午 10:11:15

iphone Programming Glossary: mainmoc

Core Data could not fullfil fault for object after obtainPermanantIDs

http://stackoverflow.com/questions/11321717/core-data-could-not-fullfil-fault-for-object-after-obtainpermanantids

data from a webserver processing it on a child private background context called backgroundMOC . It is a child of a mainMOC which is linked to the main UI so saving on the backgroundMOC triggers UI changes. The mainMOC is a child of a masterMOC.. . It is a child of a mainMOC which is linked to the main UI so saving on the backgroundMOC triggers UI changes. The mainMOC is a child of a masterMOC which is a private background queue tied to the persistent store so saving on the master saves.. What I do now is receive data create new objects on backgroundMOC then save backgroundMOC so that the UI updates save mainMOC so that I can almost save to disk and save masterMOC so that I can finally write to disk . The problem is that when the..

Core Data's NSPrivateQueueConcurrencyType and sharing objects between threads

http://stackoverflow.com/questions/8637921/core-datas-nsprivatequeueconcurrencytype-and-sharing-objects-between-threads

Assume we have these two context They need to be set up. Assume they are. NSManagedObjectContext mainMOC NSManagedObjectContext alloc initWithConcurrencyType NSMainQueueConcurrencyType autorelease NSManagedObjectContext backgroundMOC.. executeFetchRequest request error nil for NSManagedObject mo in results NSManagedObjectID moid mo objectID mainMOC performBlock ^ NSManagedObject mainMO mainMOC objectWithID moid Do stuff with 'mainMO'. Be careful NOT to use 'mo'. This.. nil for NSManagedObject mo in results NSManagedObjectID moid mo objectID mainMOC performBlock ^ NSManagedObject mainMO mainMOC objectWithID moid Do stuff with 'mainMO'. Be careful NOT to use 'mo'. This gets less confusing if you move the inner mainMOC..