• To: "Michael Kay" <mike@s...>
• Subject: Re: XSLT with DOM or SAX ?
• From: Chris Burdess <dog@b...>
• Date: Mon, 28 Mar 2005 09:33:26 +0100
• Cc: <xml-dev@l...>,"'Razvan MIHAIU'" <mihaiu@m...>
• In-reply-to: <E1DFcEL-0004ZP-00@d...>
• References: <E1DFcEL-0004ZP-00@d...>

Michael Kay wrote:
>> What kind of parser is best to use for XSLT transformations ?
>> SAX or DOM
>
> XSLT processors will in general build a tree representation of the 
> source
> document in memory. And in general, many of them will build a tree
> representation that is much more efficient than using a 
> general-purpose DOM.
> So there's no point building an inefficient DOM tree rather than 
> letting the
> XSLT processor build its own. But this advice may depend on the XSLT
> processor you are using.

For what it's worth, the GNU JAXP XSLT processor uses DOM internally 
for both source and result trees, and is about 2.8 times as fast as 
Xalan on a wide range of transformations (the OASIS XSLT/XPath 
conformance suite). I don't have figures for memory usage or 
comparisons with Saxon though.
-- 
Chris Burdess

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