On Apr 7, 2011, at 6:38 PM, Nick Zitzmann wrote: > > On Apr 7, 2011, at 4:24 PM, Carter R. Harrison wrote: > >> I really appreciate all of your help. I gave your suggestion a shot and >> I've run into problems. Here's what happens. >> >> 1. I create a new NSManagedObject in my main application. It gets inserted >> into the context. >> 2. I save the context. I can see the persistent store update in a text >> editor (its an XML store). >> 3. I send a distributed notification with the NSManagedObject's ObjectID. >> 4. My background application consumes the notification and uses the object >> ID to get an NSManagedObject (using [NSManagedObjectContext objectWithID:]. >> This produces an NSManagedObject that is a fault. >> 5. I try to fire the fault by using [NSManagedObject valueForKey:]. >> 6. Step 5 results in an exception "CoreData could not fulfill a fault for >> '0x1001029e0 <x-coredata://BB194166-B2FB-48ED-8177-E66F95B6CA3A/Alert/p118>'" >> >> I'm not sure I understand why this is happening. If the object is truly a >> fault then shouldn't Core Data go back to the persistent store to find the >> object? > > I think I've seen this before... Try calling sync() at the top of your > notification handler. That will force external database changes to be written > to disk. > > If that doesn't work, then you may need to fetch the object from the context > using some identifier other than the object ID. We do this in our products > that share a database, and it works for us when a helper app receives a > notification from the master app that a record has been added/updated/deleted. >
Well no dice with either option. sync() doesn't do it and a fetch request using a different identifier yields 0 objects. Do your products use XML stores? > Nick Zitzmann > <http://www.chronosnet.com/> > _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
