Re: Loading NSManagedObjects across NSManagedObjectContexts in an unsaved NSPersistentDocument
Re: Loading NSManagedObjects across NSManagedObjectContexts in an unsaved NSPersistentDocument
- Subject: Re: Loading NSManagedObjects across NSManagedObjectContexts in an unsaved NSPersistentDocument
- From: Dave Zwerdling <email@hidden>
- Date: Sun, 21 Nov 2010 14:32:45 -0800
On Nov 21, 2010, at 11:37 AM, vincent habchi wrote:
> Le 21 nov. 2010 à 20:09, Dave Zwerdling a écrit :
>
>> The issue lies in this: I have a background-thread reader of entities. Because it is multithreaded, it uses a separate MOC for the entities to be read. These MOCs have their persistent store coordinator the same as the document. The background thread always returns faulted objects until the persistent document is saved.
>
> If this is your problem, this is normal. Until they are saved to the persistent document, newly created objects are local to their MOC and cannot be accessed elsewhere: upon creation, they are assigned temporary IDs.
>
> Vincent
Is there a recommended way to enhance this to do what I need? I assume I would need to create an in-memory store and keep the entities there, but how do I ensure that the documents will also make it to the persistent document on save?
Dave_______________________________________________
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