Re: Any way for a managed object to get at its document object?
Re: Any way for a managed object to get at its document object?
- Subject: Re: Any way for a managed object to get at its document object?
- From: Quincey Morris <email@hidden>
- Date: Thu, 7 Oct 2010 15:35:27 -0700
On Oct 7, 2010, at 15:14, Rick Mann wrote:
> I have an NSPersistentDocument-based app. I need to implement a "setNeedsFoo" method on the managed object that causes the receiver to be placed into an NSMutableSet on the document, for later "foo" processing. As part of being added to the set, it sets a timer in the document so that this set of objects gets processed.
1. Search the (singleton) document controller's "documents" array for a document that's of class NSPersistentDocument and whose "managedObjectContext" property matches that of the object.
2. Subclass NSPersistentDocument and have it maintain a (singleton) NSMapTable that maps from the document's managed object context pointer (key) to the document object (value). Alternatively, you could subclass NSDocumentController instead to maintain such a mapping.
There may well be a more direct way, but the above sprang immediately to mind.
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