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RE: [xsl] Performance benefit in using DOMResult?
Subject: RE: [xsl] Performance benefit in using DOMResult?
From: "Michael Kay" <mike@xxxxxxxxxxxx>
Date: Wed, 27 Apr 2005 09:12:12 +0100
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I don't know the specifics for Xalan, but in general, if the next step in
your processing pipeline is a DOM application then it probably makes sense
to generate the transformation result as a DOM.
(Personally, I would search high and low for an alternative way of writing
the subsequent processing that avoided having to use DOM interfaces, but
that's just me.)
> The expected benefit is:
> 1. avoiding reparsing of transformed output xml
Yes.
> 2. hopefully leverage the result tree that the transformer creates
> internally i.e. no DOM tree creation from scratch
>
The chances are that if you write to a StreamResult or SAXResult, the result
tree never actually gets created as a real tree in memory, so the answer
here is probably No.
In fact, using a SAX stream as the interface between the two processing
steps would probably work just as well as using a DOM.
Michael Kay
http://www.saxonica.com/
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