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Re: CoreData "Could Not Merge Changes"

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Re: CoreData "Could Not Merge Changes"

Subject: Re: CoreData "Could Not Merge Changes"
From: Jesse Grosjean <email@hidden>
Date: Tue, 16 Aug 2005 13:27:44 -0400

What's curious is that it does not occur if you go through the
sequence "manually" (IIUC):

I think this is because undo groups aren't getting setup properly. I can reproduce the problem in code if I wrap my changes in undo groups like this:

    [undoManager beginUndoGrouping];
    // insert object
    [managedObjectContext processPendingChanges];
    [undoManager endUndoGrouping];

    [undoManager beginUndoGrouping];
    // set attribute on object
    [managedObjectContext processPendingChanges];
    [undoManager endUndoGrouping];

Jesse
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