Jenny,
I think what you want is to set the Entity on the NSTreeController to be the
Alpha entity, not Delta.
The predicate 'parent == nil' will only give you back Delta objects where
parent == nil. From what you've said, this will never be true as the Alpha
objects are your top level objects.
Alpha (parent == nil)
|
|->Beta (parent == Alpha)
|
|->Delta (parent == Beta)
|->Delta (parent == Beta)
---
Mark Townsend
http://www.markltownsend.com
On Wed, Feb 17, 2010 at 7:38 PM, Jenny M <safflo...@gmail.com> wrote:
> Sorry, realizing that the object chain isn't quite right. The Alpha-
> Beta relationship is one to one, NOT many to one. Each alpha has one
> beta, and one beta has multiple deltas. (I have multiple alpha
> objects, hence my initial comment of multiple, but the relationship is
> one-to-one.)
>
>
> On Feb 17, 7:22 pm, Jenny M <safflo...@gmail.com> wrote:
> > My objects are chained like:
> > Alpha (multiple) -> Beta (one) -> Delta (multiple) (delta has
> > references to itself via parent and children relationships)
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