for-loop in extension

[Scott DeLoach <sc...@lucent.com>]

I'm trying to use a javascript for-loop routine in my XSLT, but when I
try to parse the XML/XSLT via XALAN, it returns an error saying "Could
not parse document", pointing the source of the error right at the
line where my for-loop is within the script portion of the XSL.

Can any of you suggest how to resolve this, either as a solution or a
work-around.

Thanks,
 Scott DeLoach

Re: for-loop in extension

[Scott DeLoach <sc...@lucent.com>]

Dave:

OK, what I'm trying to do is build an array so that I can refer back
to via a for-loop routine in order to create a list of unique values
in the XML output.  Here is a sample of the code:

> <xsl:transform 
>     xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0"   
>     xmlns:lxslt="http://xml.apache.org/xslt"
>     xmlns:user="ext1"
>     extension-element-prefixes="user">
>     
> <lxslt:component prefix="user" functions="buildarray">
> <lxslt:script lang="javascript" >
> 
> 	var a = new Array();
> 	var index = 0;
> 
> 	function buildarray (type){
> 		var found = "false";
> 		/* Builds an array of unique parameter types */
> 		for (var i = 0; i < index; i++) {
> 			if (a[i] == type)
> 				found = "true";
> 		}
> 		if (found == "false") {
> 			a[index] = type;
> 			index++;
> 			return type;
> 		}
> 		return null;
> 	}
> 
> </lxslt:script>
> </lxslt:component>
> 
> <xsl:output method="xml" encoding="UTF-8" indent="yes"/>
> 
> <xsl:template match="/wpcfamilydoc">
> 	<xsl:element name="data">
> 		<xsl:apply-templates select="wpcfamily" />
> 	</xsl:element>
> </xsl:template>
> 
> <xsl:template match="wpcfamily">
> 	<xsl:element name="type">
> 		<xsl:value-of select="user:buildarray(parameter/@type)" />
> 	</xsl:element>
> </xsl:template>
> 
> </xsl:transform>

If I take out the for-loop, and parse it through XALAN, I get a list
of all the parameter/@types, so I know at this point everything
works.  But when I try to parse it through XALAN with the for-loop
routine, it crashes with the following error:

> file:/C:sample.xslt; Line 16; Column 22
> XSL Error: Could not parse sample.xslt document!, Location file:/C:sample.xslt,
> line 16, offset 22
> XSL Error: SAX Exception, Location file:/C:sample.xslt, line 16, offset 22
> Exception in thread "main" org.apache.xalan.xslt.XSLProcessorException: The cont
> ent of elements must consist of well-formed character data or markup.
>         at org.apache.xalan.xslt.XSLTEngineImpl.error(XSLTEngineImpl.java:1630)
>         at org.apache.xalan.xslt.XSLTEngineImpl.processStylesheet(XSLTEngineImpl
> .java:722)
>         at org.apache.xalan.xslt.XSLTEngineImpl.process(XSLTEngineImpl.java, Com
> piled Code)
>         at transform.main(transform.java:75)

Line 16 is where "for (var i = 0; i < index; i++) {" is located in the
source code.

Any ideas?

Scott DeLoach