I take it this has been discussed before a number of times, e.g.

http://qooxdoo.678.n2.nabble.com/Adding-quot-modelPath-quot-property-to-qx-data-controller-List-td6648554.html

So I construct a tree using databinding. I then have a server-side 
search function that returns objects or object ids of the type used by 
the tree model. I want to select one of the objects indicated by the 
server in the tree.

What Qooxdoo would have me do now is iterate over the tree, recursively, 
in order to find the correct instance to add to the selection.

I could also manually keep a hash of ids => instances, and maintain that 
hash whenever new objects are created/deleted.

Quite possible to do, of course. But no fun whatsoever. Shouldn't 
Qooxdoo desire to make this use case, and related ones discussed in the 
link above, easier for the developer?

Michael

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