Create a Link Entity by adding another property linkType which decides
the normal or alternate link.
In Item entity make to-many- relationShip for relationship link
Thanks
Kiran
On 13-Oct-09, at 11:34 AM, Rob Keniger wrote:
I'm just getting started with Core Data so go easy on me.
I am moving my existing app across to Core Data and I'm having
trouble with a few concepts.
At present (pre-Core Data) my app has a model object ("Item") which
is used as the node object in an NSTreeController.
This model object has multiple ivars of another custom object
("Link") like so:
@interface Item : NSObject
{
Link* normalLink;
Link* alternateLink;
}
@end
I'm trying to replicate this in my Core Data model. I have set up
two entities, Item and Link. I have created two relationships in the
Item entity, "normalLink" and "alternateLink", both pointing to the
Link entity.
Basically, I want each of these relationships to point to an
instance of the Link entity.
However, now I have a problem. My Link entity has one relationship
("item") which should be the inverse relationship, but that's not
possible because I can only have one inverse relationship.
I think I'm getting mixed up here, how should this actually be
modelled?
--
Rob Keniger
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