site_archiver@lists.apple.com Delivered-To: cocoa-dev@lists.apple.com User-agent: RoundCube Webmail/0.1 Hi everyone, I was not able to find any answer either on this list or on the web although I thought it must be a common interrogation (my question must then be very silly, I suppose). My program uses Core Data to maintain Figures. - A Figure has a FillStyle. - A FillStyle has a FillColor (or has not). All all these are entities, implemented as subclasses of NSManagedObject. I have followed the example given in the Core Data Persistent Document tutorial (http://developer.apple.com/documentation/Cocoa/Conceptual/NSPersistentDocume...) This example provides a simplistic example, with a single entity. It worked so far to copy and paste Figures, but once a Figure is inserted into the graph (using +[NSEntityDescription insertNewObjectForEntityForName:inManagedObjectContext:]), the FillStyle and the FillColor are filled with their default values, like on an ordinary creation. My problem is therefore to archive the FillStyle and the FillColor along with the Figure, and be able to recreate the graph of objects. I've never used either NSCoder nor NSArchiver before, but they don't seem to be an answer to my problem here, as they deal with graphs of Objective-C objects. However, I would have to code a very similar solution. And that would be inefficient to insert entities in the graph, and replace their default values with the copied ones, for something very akin to fetching entities. Any suggestion ? (I need to support Mac OS 10.4). Thanks in advance. Renaud Pradenc -------------- ceroce.com _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/site_archiver%40lists.apple... This email sent to site_archiver@lists.apple.com