Re: Core Data & NSPersistentDocument & Concurrency
Re: Core Data & NSPersistentDocument & Concurrency
- Subject: Re: Core Data & NSPersistentDocument & Concurrency
- From: Felix Franz <email@hidden>
- Date: Fri, 01 Feb 2013 23:11:54 +0100
On 01.02.2013, at 21:13, email@hidden wrote:
>
> The problem then is that my NSPersistentDocument generates an error which says:
>
> "The document "xxx" could not be saved. The file has been changed by another application"
>
> Of course, the other application is the NSOperation which did change the document.
>
> How can I correctly avoid the error?
Never tried it, but maybe the workaround documented in NSManagedObjectContext>obtainPermanentIDsForObjects:error:
works here too (calling setFileModificationDate on the document).
https://developer.apple.com/library/mac/documentation/Cocoa/Reference/CoreDataFramework/Classes/NSManagedObjectContext_Class/NSManagedObjectContext.html#//apple_ref/doc/uid/TP30001182-SW7
Cheers,
felix
>
> Thank you.
>
>
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