I wanted to get a subset of an entity's attributes because one of the ManagedObject's attributes is a large image.
I've tried 1) creating a blank Managed Object Model and adding only the attributes I want, but of course the PSC says that the MOM that was used to create the store is different, and returns an error. 2) using the -setPropertiesToFetch: method of NSFetchRequest, with the "id" NSAttributeDescription I'm looking for as the only object in the properties array. But when I use the -(NSArray*) properties method of the fetched objects, the "image" attribute is there with a non-nil value. 3) I ended up using one of the NSExpression expressions to get the value I wanted, using the example in the Core Data Programming Guide. Out of curiosity, does anyone have experience using the -setPropertiesToFetch with anything other than an NSExpressionDescription? Thanks, Gabe ---------------------------------------------------------------- Gabriel Fernandez Wheel Software _______________________________________________ Cocoa-dev mailing list ([email protected]) 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/archive%40mail-archive.com This email sent to [email protected]
