Re: Equivalent of NSManagedObjectContextWillSaveNotification in 10.5?
Re: Equivalent of NSManagedObjectContextWillSaveNotification in 10.5?
- Subject: Re: Equivalent of NSManagedObjectContextWillSaveNotification in 10.5?
- From: Jerry Krinock <email@hidden>
- Date: Wed, 28 Jul 2010 23:30:14 -0700
On 2010 Jul 28, at 20:07, Gideon King wrote:
> Thanks Jerry, it is part of an NSPersistentDocument subclass. I get a bit confused about which save method(s) I would have to implement in my subclass, as there seem to be a number of save... methods and a number of writeTo... methods. The potential candidates seem to be...
No need to guess! Paste "Message Flow in the Document Architecture" into your Xcode documentation viewer. Up near the top hit should be a page with that title in "Document-Based Applications Overview", which is the most usefully lucid page of documentation ever produced by Apple. It has some wonderful diagrams including one for "Saving a Document".
Unfortunately it doesn't show the topmost stack calls for Core Data (I've filed a bug), but you can see where it leaves off, knowing that NSPersistentDocument overrides writeToURL:ofType:forSaveOperation:originalContentsURL:error:. Anything under that works just like it says.
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