>I am trying trying to understand how to take a pre-existing DOM document
>(using the org.apache.xerces.DOMImpl) and either translate it into a
>org.apache.xalan.xsltc.dom.DOMImpl.
I don't know if XSLTC can read a DOMSource yet, but ideally that would be
the right answer -- you'd pass in a DOMSource and trust it to Do The Right
Thing. You should never have to be directly aware of the processor's
underlying data model.
(Especially since we're hoping to merge DTM and XSLTC's DOMImpl into a
single datatype, so hard-coded dependencies on one or the other may get
broken.)