Re: Multi-storage Core Data

FROM : Keary Suska
DATE : Sat May 17 21:00:59 2008

on 5/17/08 10:27 AM, <email_removed> purportedly said:

> I'm trying to build a Core Data app for which some data is user-provided and
> some data is shipped with the program. Consider a travel itinerary program
> for instance where the user has a trip from airport A to airport B. If the
> program includes data about the airports themselves, that shouldn't be
> stored in the same storage as the user's flight numbers. One is document
> based and the other is shared across documents.
>
> I understand the basic idea of using Fetched Properties and how to create
> them. What I'm not clear on is how to define a fetched property in one store
> against objects in another store, or how to tie multiple stores together
> into a context. Is there a good explanation or sample code for this kind of
> setup?


I don't believe there is any support for this, at least not "automatically".
You would have to provide glue code for any interactions between Managed
Object Contexts (MOCs), since each MOC is married to one storage.

HTH,

Keary Suska
Esoteritech, Inc.
"Demystifying technology for your home or business"