• Open Menu Close Menu
  • Apple
  • Shopping Bag
  • Apple
  • Mac
  • iPad
  • iPhone
  • Watch
  • TV
  • Music
  • Support
  • Search apple.com
  • Shopping Bag

Lists

Open Menu Close Menu
  • Terms and Conditions
  • Lists hosted on this site
  • Email the Postmaster
  • Tips for posting to public mailing lists
Exceptions to the "don't use -[NSManagedObject dealloc]" rule?
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Exceptions to the "don't use -[NSManagedObject dealloc]" rule?


  • Subject: Exceptions to the "don't use -[NSManagedObject dealloc]" rule?
  • From: Jonathan del Strother <email@hidden>
  • Date: Thu, 30 Sep 2010 14:41:08 +0100

Hi,

I'm in the process of converting an existing iPhone app to use Core
Data for its backend storage.  I've got a model that manages an upload
of its own attributes to a server - it has a retained NSURLConnection
instance variable.  Traditionally, I'd just release the connection in
the model's dealloc method.  Core Data seems to suggest that if I do
that, my connection will never get released, since dealloc won't get
called, and I should do everything in didTurnIntoFault method.

However, even if my model refaults while a connection is in progress,
the connection ought to carry on uploading.  After the connection has
uploading, it doesn't actually need the model's attributes, so won't
trigger a new fetch.  So where am I supposed to release the
connection?

Or is it that in practice, live Core Data objects that are being
retained by a controller never get refaulted?  There's only a brief
mention of refaulting (in the Core Data glossary), and not much
explanation of when it might happen.  I assumed that on the iPhone in
particular, a memory warning might trigger live objects into
transparently becoming fault objects, but I've not actually seen much
written evidence to back that up.

-Jonathan
_______________________________________________

Cocoa-dev mailing list (email@hidden)

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:

This email sent to email@hidden

  • Follow-Ups:
    • Re: Exceptions to the "don't use -[NSManagedObject dealloc]" rule?
      • From: Dave DeLong <email@hidden>
  • Prev by Date: Re: Should I use NSDocument, NSUserDefaults or something else
  • Next by Date: Re: CGEventTap Not Receiving Events after some time
  • Previous by thread: Re: Should I use NSDocument, NSUserDefaults or something else
  • Next by thread: Re: Exceptions to the "don't use -[NSManagedObject dealloc]" rule?
  • Index(es):
    • Date
    • Thread