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Re: CoreData - Multiple Model Files?
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Re: CoreData - Multiple Model Files?


  • Subject: Re: CoreData - Multiple Model Files?
  • From: "Sean McBride" <email@hidden>
  • Date: Wed, 12 Nov 2008 19:36:21 -0500
  • Organization: Rogue Research

On 11/12/08 11:27 AM, Todd Blanchard said:

>I'm working with another developer on an app with a rather elaborate
>core data schema.  We are each working on different parts of the
>schema.  Having one model just isn't scaling - version control does
>not like model files - they constantly get broken and are a nightmare
>to merge.
>
>Is it possible to have multiple model files that share some entities?
>Is there code to stitch them together at compile time into one
>compiled model file?
>
>This is a serious scalability issue for us.   We might as well not
>have the thing in version control at all since we have to agree who
>owns the file at any one time to keep from messing it up.

Have you read the NSManagedObjectModel docs?  +modelByMergingModels may
help.  You could ever forgo .xcdatamodel entirely and build your model
in code.  I'd just bite the bullet for now, when your model is in flux
at the beginning of design in sucks, but your model will stabilise eventually.

Do file a bug requesting that the .xcdatamodel become text (just like
the nib -> xib change), and mergeable text at that (unlike .xib).

--
____________________________________________________________
Sean McBride, B. Eng                 email@hidden
Rogue Research                        www.rogue-research.com
Mac Software Developer              Montréal, Québec, Canada


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References: 
 >CoreData - Multiple Model Files? (From: Todd Blanchard <email@hidden>)

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