Sync services, core data and entity inheritance
Sync services, core data and entity inheritance
- Subject: Sync services, core data and entity inheritance
- From: Martin Hewitson <email@hidden>
- Date: Sat, 8 Jan 2011 17:30:32 +0100
Dear List,
I have implemented sync services in an app which uses core data. The model has entities which have parent entities. For example, there is a Meeting entity which subclasses a Category entity. When I start the app I get the following error from sync services:
|CoreDataSync|Error| Exception in synchronize: Sync failed: ISyncInvalidArgumentsException [ISyncConcreteSession pushChangesFromRecord:withIdentifier:]: you can't change the record's entity name from com.bobsoft.agenda2.Category to com.bobsoft.agenda2.Meeting in {
children = (
"x-coredata://6BD322AB-EFBA-4E8A-8B47-62EA708EC09D/Session/p133";,
"x-coredata://6BD322AB-EFBA-4E8A-8B47-62EA708EC09D/Session/p132";
);
"com.apple.syncservices.RecordEntityName" = "com.bobsoft.agenda2.Meeting";
end = "2011-01-03 16:00:00 +0100";
isExpanded = 1;
location = unknown;
name = "New Meeting 05";
parent = (
"x-coredata://6BD322AB-EFBA-4E8A-8B47-62EA708EC09D/Category/p131";
);
position = 0;
sortIndex = 1;
start = "2011-01-03 08:00:00 +0100";
themes = (
"x-coredata://6BD322AB-EFBA-4E8A-8B47-62EA708EC09D/Theme/p136";,
"x-coredata://6BD322AB-EFBA-4E8A-8B47-62EA708EC09D/Theme/p138";,
"x-coredata://6BD322AB-EFBA-4E8A-8B47-62EA708EC09D/Theme/p134";,
"x-coredata://6BD322AB-EFBA-4E8A-8B47-62EA708EC09D/Theme/p135";
);
}
My client description is attached, and a screenshot of the data model can be found here:
files.me.com/martinhewitson/35oxp5
Is it possible to sync entities which are subclasses of other entities?
Best wishes,
Martin
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Martin Hewitson
Albert-Einstein-Institut
Max-Planck-Institut fuer
Gravitationsphysik und Universitaet Hannover
Callinstr. 38, 30167 Hannover, Germany
Tel: +49-511-762-17121, Fax: +49-511-762-5861
E-Mail: email@hidden
WWW: http://www.aei.mpg.de/~hewitson
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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