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From Martin Monsorno <>
Subject strange error when processing stylesheets: tomcat, jdk1.4, windows, xalan
Date Thu, 01 Jul 2004 09:25:48 GMT
Hi *,

I get the following error when trying to transform a xml document with
a XSLT stylesheet:

    ; SystemID: jndi:/localhost/ipas/xsl/minutes_pdf.xsl; Line#: 298; Column#: 66
    javax.xml.transform.TransformerException: Unknown error in XPath
            at org.apache.xpath.XPath.bool(
            at org.apache.xalan.templates.ElemIf.execute(

In the stylesheet, I test for an empty string:

    <xsl:if test="not(string(./title))">

The error occurs:

- with ANY test condition that tests for an empty string
  (e.g. with "string-length(./entry) = 0"
- with having xalan.jar, xml-apis.jar and xercesImpl.jar in my
  WEB-INF/lib from any xalan versions of 2.5.0, 2.5.2, 2.6.0
- with Tomcat 4.1.29 on Windows 2000 and JDK 1.4x
- NOT with JDK 1.3
- NOT on Linux
- NOT with resin

It's these kind of errors that makes being a programmer a real fun!

Does anyone have a tip on what to do?  


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