Edward.Middleton@xxxxxxxxxxx wrote:
> Do you mean it creates a complete tree for the document before processing, or
> just a tree containing the currently processed portion of the document?

It depends. AFAIK Saxon always produces a full in-memory
representation of the whole document.
Xalan is capable of "streaming processing". If told so
it may hold only a portion of the processed source in
memory. With a generic copy-through style sheet Xalan
should be able to work on input of arbitrary size.

J.Pietschmann


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