On Sat, Oct 31, 2009 at 12:05 PM, Richard Somers
<rsomers.li...@infowest.com> wrote:

> The documentation states didTurnIntoFault "method may be used to clear out
> custom data caches". So far so good.
>
> I was creating custom data caches in awakeFromFetch (or awakeFromInsert)
> until I realized that awakeFromFetch does not participate in undo. The
> documentation confirms that "change processing is explicitly disabled
> around this method".
>
> So Apple provides a way to remove custom data caches associated with a
> managed object but no way to create them.

Typically you set up the baseline value in -awakeFromFetch.

Is there a specific reason you need this to be undoable?

Jim
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