RE: [xsl] Optimizing Trax

["Schwartz, Rechell R, ALABS" <rrschwartz@xxxxxxx>]

How do I tranform the document using SAX-- i.e., how do I change this
line?

 transformer.transform(new DOMSource(document), new StreamResult(out));

Rechell Schwartz

-----Original Message-----
From: J.Pietschmann [mailto:j3322ptm@xxxxxxxx]
Sent: Friday, June 20, 2003 3:13 PM
To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
Subject: Re: [xsl] Optimizing Trax


Schwartz, Rechell R, ALABS wrote:
> I am using Trax to transform my xml files, and am finding the
performance
> very slow especially for large files. Are there any ways of optimizing
the
> performance such as by pre-compiling the stylesheets?

Yes, but your time is probably wasted elsewhere.


 > transformer = tFactory.newTransformer(new 
StreamSource(getClass().getResourceAsStream(xsl)));
 > transformer.transform(new DOMSource(document), new
StreamResult(out));
                              ^^^^^^^^^^^^^^^^
Use a profiler to check where your program wastes time:
- DB access or whereever you get your raw data
- DOM construction
- transformation
If it is the latter, check your XSL for inefficient constructs.
If it is DOM construction, use SAX. Also DOM uses a lot of memory,
which may be a problem in itself (more GC).

J.Pietschmann


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