xalan and custom function for xslt - xslt

Question

I'm using Apache FOP with the IKVM from my c# code. I generate the pdf by using the xslt stylesheet to get the result as xsl fo. I have one problem, that is usingthe custom functions.
My stylesheet declaration:
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:fo="http://www.w3.org/1999/XSL/Format"
xmlns:cal="xalan://m.test"
extension-element-prefixes="cal"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.w3.org/2001/XMLSchema-instance http://www.xmlblueprint.com/documents/fop.xsd">
The custom function:
namespace m
{
public class test
{
public static string zzz(ExpressionContext x, object d)
{
return "test";
}
}
}
And calling this from the xslt:
<xsl:value-of select="cal:zzz(1)"/>
Code to compile it:
FopFactory fopFactory = FopFactory.newInstance();
fopFactory.ignoreNamespace("http://www.w3.org/2001/XMLSchema-instance");
fopFactory.setUserConfig(new File("fop.xconf"));
OutputStream o = new DotNetOutputMemoryStream();
try
{
Fop fop = fopFactory.newFop("application/pdf", o);
TransformerFactory factory = TransformerFactory.newInstance();
Source xsltSrc = new StreamSource(new File("data.xsl"));
Transformer transformer = factory.newTransformer(xsltSrc);
var bytes = System.IO.File.ReadAllBytes("data.xml"); //"HR_CV.fo");
var stream = new DotNetInputMemoryStream(new System.IO.MemoryStream(bytes));
Source src = new StreamSource(stream);
Result res = new SAXResult(fop.getDefaultHandler());
transformer.transform(src, res);
}
finally
{
o.close();
}
Exception I got is:
java.lang.NoSychMethodExtension: For extension function, could not find method org.apache.xml.utils.NodeVector.zzz([ExpressionContext,])
What I'm doing wrong?

Answer 1

You're calling the zzz function with a single argument (1). But your function expects two arguments. If you provide both arguments, chances are it will work just fine.