I was about to start experimentation on the current Tomcat 4.x distribution of Jasper and just wanted to ping this list first to see if anyone had tried this kind of thing before (or were in the middle of doing it themselves). I'm interested in having a configurable (on a per web-app bases for now) SAX XMLFilter object used to preprocess the XML format of JSP before the Java code gets generated. This mechanism would enable compile time transformation of JSP, for example to implement "compile time tags" using XSLT in a similar way to Cocoon's XSP. >From my first looks at the source code it would appear a patch to org.apache.jasper.compiler.ParseXJspSax would do the trick (in the parse() method). Does anyone have any warnings or info before I dive in? <James/> James Strachan ============= email: [EMAIL PROTECTED] web: http://www.metastuff.com __________________________________________________________________ If you are not the addressee of this confidential e-mail and any attachments, please delete it and inform the sender; unauthorised redistribution or publication is prohibited. Views expressed are those of the author and do not necessarily represent those of Citria Limited. __________________________________________________________________