Martin Honnen wrote:

> A. W. Dunstan wrote:
> 
>>         DocumentBuilderFactory dbf =
>>         DocumentBuilderFactory.newInstance();
> 
> For XPath stuff you should always use a namespace aware factory/document
> builder so make sure you call the method to enable that.
> 
>> The XML source (src.xml, above) is:
>> 
>> <ns2:nuc2 xsi:schemaLocation="nuc2.xsd" xmlns:ns1="Exer_Sets"
>>    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
>>    xmlns:ns2="nuc2">
>>    
>>   <ns1:Exer SetSequence="1" SetDescription="Exercise Identification">
>>     <ExerciseNickname>pushups</ExerciseNickname>
>>     <ExerciseAdditionalIdentifier>whatever</ExerciseAdditionalIdentifier>
>>   </ns1:Exer>
>> 
>> </ns2:nuc2>
> 
> So your XML uses namespaces, to cater for that the XSLT stylesheet needs
> to bind prefixes to the namespaces used:
>    <xsl:stylesheet
>      xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
>      version="1.0"
>      xmlns:ns2="nuc2"
>      xmlns:ns1="Exer_Sets"
>      exclude-result-prefixes="ns1 ns2">
> then you need to use those prefixes in your XPath expressions and in
> your XSLT match patterns:
> 
>     <xsl:value-of select="/ns2:nuc2/ns1:Exer/ExerciseNickname"/>
> 
> You just got lucky with your Java program as you used a not namespace
> aware DOM I think, if you use a namespace aware DOM then you need
> prefixes in your XPath expressions too and need to manage them in your
> Java program too.
 
It works!  Much thanks.  I'll go read up on namespaces.

-- 
Al Dunstan, Software Engineer
OptiMetrics, Inc.
3115 Professional Drive
Ann Arbor, MI  48104-5131