Inverse of what? So Item A has link 1 as it's normal link and link 2 as it's alternate link but then what if link 2 is also the normal link for item B.
My guess is you'll need 2 inverse relationships! Matt On Tuesday, October 13, 2009, Rob Keniger <[email protected]> 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 > > > > _______________________________________________ > > 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/matthew%40sagacity.com.au > > This email sent to [email protected] > -- Safe, comfortable and satisfied? Consider supporting some people who aren't! I'm riding 100 kilometres to raise funds for refugees! http://my.e2rm.com/personalPage.aspx?registrationID=750445 _______________________________________________ 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]
