Hi, I am building a mapping model between two versions of my Core Data model, and I am encountering a strange issue:
* If I define six of the seven entity mappings I need in the mapping model, migrating the data works as expected. * When I add the seventh entity mapping, the migration fails with this error: Persistent store migration failed, missing mapping model. * If I delete that seventh entity mapping, the migration works again. * I am trying to do the migration by calling addPersistentStoreWithType:… on the NSPersistentStoreCoordinator. * Reading in both the source and destination models with NSManagedObjectModel initWithContentsOfURL:... works as expected. * Reading in the NSMappingModel with initWithContentsOfURL:… works as expected. * With the seventh entity mapping added, reading in the mapping model with [NSMappingModel mappingModelFromBundles:@[bundle] forSourceModel:source destinationModel:dest] returns null. Using git I've confirmed that the only file I am changing is the mapping model file; I am not changing the models themselves. I would appreciate any thoughts on how to debug this further. Thank you. John _______________________________________________ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
