Re: UPDATE: Core Data Cascade delete rule sometimes doesn't -- maybe never? (all of a sudden)
Re: UPDATE: Core Data Cascade delete rule sometimes doesn't -- maybe never? (all of a sudden)
- Subject: Re: UPDATE: Core Data Cascade delete rule sometimes doesn't -- maybe never? (all of a sudden)
- From: Adam Swift <email@hidden>
- Date: Tue, 12 Feb 2008 16:09:56 -0800
I set up a trivial test with a model with Item and Link entities with
relationships as you describe and I cannot reproduce the problem you
are seeing (cascade deletes are working and do delete the related
objects). Please file a bug.
On Feb 11, 2008, at 5:25 PM, Doug Knowles wrote:
It turns out that deletion of the object in question in any context
(including the UI action that's been in place for many months).
To recap: I am deleting an NSManagedObject (called an "item") with a
to-many relationship to a "link" entity, which has a to-one inverse
relationship. The delete rule on the to-many relationship is
"Cascade"; the delete rule on the inverse relationship is
"Nullify". After deletion (and after processPendingChanges), the
link entity is not deleted, and other entities retain a relationship
with it (even though those relationships should have been nullified
by the deletion of the link).
I haven't touched the model for weeks, maybe months, and this
operation was working well after the last time I did change it. I'm
starting to suspect a corruption in the model, but there doesn't
seem to be an easy way to check it.
Doug K;
On Feb 11, 2008 4:27 PM, Doug Knowles <email@hidden> wrote:
Well, per the tech note, I do call processPendingChanges before I do
the manual validation (which catches undeleted now-invalid
objects). And my understanding is that processPendingChanges is
automatically called on a Save, which is where I first encountered
the invalid records.
The release note implies that Core Data is doing some work (like
propagating deletions) at the top of the event loop; could it be
that the processing of incoming AppleEvents is short-circuiting
whatever Core Data normally does?
On Feb 11, 2008 2:19 PM, Adam Swift <email@hidden> wrote:
Have you tried manually calling "processPendingChanges" after the
delete? Cascade deletes are not processed immediately:
http://developer.apple.com/releasenotes/Cocoa/CoreDataReleaseNotes/index.html
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