Core Data and NSOperation

Question

I\'m currently working with an NSPersistentDocument subclass that uses NSOperation to import data in the background. As per the documentation, I\'m obs

Answer 1

I'm nobody's Core Data expert, but from what I can tell from the docs, you'll want to start with an in-memory store until the user (in their own time) saves the document. Then, send the coordinator a migratePersistentStore:toURL:options:withType:error: message to change over from the in-memory store to the new truly-persistent store. See that document for some essential details (particularly regarding the fate of the store you migrate).