Hi!

I had to code an extension function in Java. The following is a basic example. Let's say:

myURI:getContent(node) which returns the text content of a node or null if it's an empty node.

In my code, I try the following:

<xsl:variable name="myContent">
<xsl:if test="myURI:getContent(//someNode) = 'US'">true</xsl:if>
</xsl:variable>

And it works.

But the following crashes:

<xsl:variable name="myContent" select="myURI:getContent(//someNode)"/>

The latter throws a NullPointerException.

From what I understand, extensions should never return null values but an empty String. Am I right?

Thanks for your time,

RushMan

__________________
Dijkstra's law on Programming and Inertia:

If you don't know what your program is supposed to do, don't try to write it.

The behaviour of Java extension functions depends entirely on the XSLT processor you are using (which you haven't told us).

__________________
Michael Kay
http://www.saxonica.com/
Author, XSLT 2.0 and XPath 2.0 Programmer\'s Reference

Hello Mr. Kay!

I'm using Xalan-Java. This is unfortunately not MY choice...

Rushman

>I'm using Xalan-Java

Then I regret I can't help you. You may be better off asking on a forum specific to this product.

__________________
Michael Kay
http://www.saxonica.com/
Author, XSLT 2.0 and XPath 2.0 Programmer\'s Reference