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Cayenne and Core Data
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Cayenne and Core Data


  • Subject: Cayenne and Core Data
  • From: Tore Halset <email@hidden>
  • Date: Wed, 13 Sep 2006 12:20:02 +0200

Hello.

Cayenne[1] is an Java Object Relational Mapping framework. It has support for Remote Object Persistence (ROP)[2].

I have done some work to create a Cocoa client for Cayenne ROP. This would however not be complete without some sort of Core Data support.

What it need Core Data support for:
* Adding to a to-many relationship is currently working, but not to a non-related or master entity. The NSArrayController should be able to automatically register new objects with the object context.
* Supporting the "Delete Objects On Remove"-feature set to true/ false in IB.
* +++?


I can see several possible ways to do this, but do not know if any of them are possible.
* Use Core Data unmodified and just hook on the the object store part of it.
* Subclass or implement NSManagedObjectContext so that the Cayenne Client is used.
* Not use Core Data at all, but using some other mechanism to do the same things.


I do not know how to get started with the Core Data support for the Cayenne client. Any pointers to related projects and/or documentation are wanted.

Regards,
- Tore.
[1] http://incubator.apache.org/cayenne/
[2] http://cwiki.apache.org/CAYDOC/remote-object-persistence- introduction.html
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