On Apr 29, 2005, at 11:53 AM, John Brownlow wrote:
You edit your document, and delete whatever it is that requires the
managedObject. The managed object is released and its retain count
falls to 0.
What happens now? I know that the managedObjectContext will retain
certain objects with pending changes, so is that what happens here? Is
it actually only de-allocated when the MOC saves the next time?
I believe the object hangs around until you save, but it should return
YES to -isDeleted in the meantime.
More importantly, what happens to the copy in the persistent store?
Unchanged until you save.
When the MOC saves, is the persistent store overwritten, and the
object effectively deleted from the saved file, or does it hang around
and have to be deleted manually using the -deleteObject method?
You only have to delete it once, then save. Does that answer the
question?
A Managed Object could also be deleted indirectly if it's at the
destination end of a relationship which is set to "cascade", and the
owner of the relationship is deleted.
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