Hi,

I was trying to solve this question once, using a comet/server-push-like
mechanism. I built a "databinding" layer on top of the TreeVirtual and the
Table widgets which manipulated their internal cache incrementally. Parts of
this can be seen in the "virtualdata" contrib. However, this involved a lot
of hacking that didn't seem "right" to me, and I don't plan on developing
this any further.

I know this doesn't solve your immediate problem, but according to Martin, a
remote table and tree using databinding "across the wire", with dynamic
updates of the client-side model data is planned within the qx.virtual.*
infrastructure. I have pushed off all ambitions in this respect until this
is solved "the right way" within the databinding architecture. 

Cheers,
C.
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