On Feb 25, 2009, at 14:16, Jerry Krinock wrote:
How can I get this? According to the documentation, a to-many relationship is ordinarily modified by mutating the mutable set proxy. So there is no always-invoked accessor to override.
Implement the set-mutation accessor methods in your NSManagedObject subclass:
http://developer.apple.com/documentation/Cocoa/Conceptual/KeyValueCoding/Concepts/AccessorConventions.html#/ /apple_ref/doc/uid/20002174-178830-BAJEDEFB
and scroll down to the "Mutable Unordered Accessors" subheading. Modifying the object via the mutable set proxy calls these methods (and Core Data has built-in implementations of them that you'll be overriding by writing your own:
http://developer.apple.com/documentation/Cocoa/Conceptual/CoreData/Articles/cdAccessorMethods.html#/ /apple_ref/doc/uid/TP40002154-SW9
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