XSL calls java function

vetrikam · October 9th, 2003, 01:20 AM

hi ,

i am trying to call a java function from my xsl, this throws me an error, plz help me out
here is the code, and the error

iam using xml spy 5

error:(from xsl)
   This file is not valid:
    Function not in namespaceError in XPath expression,Function not in name space.

Xsl: (source)

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:lxslt="http://xml.apache.org/xslt" xmlns:look="C:/j2sdk1.4.0/jre/bin/Test" extension-element-prefixes="look">
<lxslt:component prefix="look" elements="timelapse" functions="flash"> <lxslt:script lang="javaclass"/> </lxslt:component>

    <xsl:variable name="ret">
      <xsl:call-template name="contract">
      <xsl:with-param name="nadu" select="country"/>
      </xsl:call-template>
    </xsl:variable>

    <xsl:template name="contract">
    <xsl:param name="nadu"/>

      <xsl:value-of select=" look:flash() "/>

Java code:

public class Test
{

    public static String flash()
    {
        return "Baba";
    }
}

plz give me a brief answer as i am new to xslt

thanx in advance.

armmarti · October 9th, 2003, 10:24 AM

Hi,

I've noted several points which I would like to mention here:

1) First of all, the internal XSLT processor of XML Spy 5 is not Xalan, whereas the code you used is intended for Xalan. Therefore, try to run the transformation using Xalan 2.5, for instance.

2) Try to replace the respective code-snippet with this one(you'll find what parts I mean). Note the namespace declaration for "lxslt": your declaration was wrong.

Code:

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
                xmlns:lxslt="http://xml.apache.org/xalan"
                xmlns:look="Test"
                extension-element-prefixes="look">

  <lxslt:component prefix="look"
                   elements="timelapse" functions="flash">
    <xalan:script lang="javaclass" src="xalan://Test"/>
  </lxslt:component>

3) It will be safer to surround extension function calls by xsl:if like this:

Code:

<xsl:if test="function-available('look:flash')">
   <xsl:value-of select="look:flash()"/>
</xsl:if>

4) And finally put the class Test on the classpath

I hope these will be sufficient to perform the transformation successfully.
If not, let me know, and we'll discuss untill the final solution.

Regards,
Armen

vetrikam · October 9th, 2003, 10:33 PM

Thanx armmarthi, for ur reply,

i will try it and get back to u