I have a very simple object model that contains, along with 4 or 5 others, an abstract entity. The app uses NSPersistentDocument.
I have created a new model version that changes a transient property to a modelled property in an entity derived from the above abstract entity. I have created my mapping model and configured the PSC with NSMigratePersistentStoresAutomaticallyOption. Migration always fails with multiple validation errors. Looking at the data mapping model I can see that the abstract class is not represented. Is this to be expected? Is migration of abstract entities troublesome? Some web statements state a that a mapped migration of abstract entities is not supported. Some other evidence that it is. A different model change - adding a simple BOOL attribute - also fails. Will a manual editing of the mapping model to represent the abstract entity help? Regards Jonathan Mitchell Developer http://www.mugginsoft.com _______________________________________________ Cocoa-dev mailing list ([email protected]) 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 [email protected]
