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Re: -[NSManagedObjectContext save:] fails but gives no NSError

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Re: -[NSManagedObjectContext save:] fails but gives no NSError

Subject: Re: -[NSManagedObjectContext save:] fails but gives no NSError
From: Jerry Krinock <email@hidden>
Date: Fri, 23 Nov 2007 09:24:49 -0800

After I discovered and removed a bunch of stupid code, this problem went away. It appears that I was either trying to insert or delete objects twice, or trying to insert objects with relationships to objects that had been deleted (inconsistent object graph).

Lesson: Do not assume that -[NSManagedObjectContext save:] will set its argument to an NSError* whenever an error occurs. Always check its return BOOL value, because more commonly when it fails it returns NO but does ^not^ set the NSError*. _______________________________________________

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Re: -[NSManagedObjectContext save:] fails but gives no NSError
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  >-[NSManagedObjectContext save:] fails but gives no NSError (From: Jerry Krinock <email@hidden>)




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