xerces and IBM Java2

[Vadym Krevs <Va...@merant.com>]

I've encoutered an interesting bug concerning xerces-1.2.3. On my computer I
have two JDK installed:

1) IBM Java2 
java -version
java version "1.3.0"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0)
Classic VM (build 1.3.0, J2RE 1.3.0 IBM build cn130-20001124 (JIT enabled:
jitc)

2) Suns Java2
java.exe -version
java version "1.3.0_01"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0_01)
Java HotSpot(TM) Client VM (build 1.3.0_01, mixed mode)

Below you will find sources of two files, TestXML.java and req_getwork1.xml.
If I compile and execute the TestXML.java file using Sun's JDK the output is
GetWork
GetWork

however if I compile and execute the TestXML.java file using IBM's JDK the
output becomes
GetWork
null.

It appears that the local name of the <GetWork> element is null for IBM's
JDK, whereas for Sun's JDK it is GetWork - as it should be. Is it a xerces
bug or IBM's VM bug?

Thanks,
Vadym

----------------------------------------------------------------------------
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Source of req_getwork1.xml
----------------------------------------------------------------------------
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<?xml version="1.0"?>
<SOAP-ENV:Envelope
xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:xsi="http://www.w3.org/1999/XMLSchema-instance">
	<SOAP-ENV:Body>
		<GetWork xmlns="http://www.somenamespace.com"> 
			<user id="user" password="password" version="1"/>
		</GetWork>
	</SOAP-ENV:Body>
</SOAP-ENV:Envelope>


----------------------------------------------------------------------------
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Source of TestXML.java :
----------------------------------------------------------------------------
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import java.io.*;

import org.apache.xerces.parsers.*;
import org.xml.sax.*;
import org.w3c.dom.traversal.*;
import org.w3c.dom.*;

public class TestXML
{

    static public void main(String args[])
    {
        try{
            FileReader reader = new FileReader("req_getwork1.xml");

            DOMParser parser = new org.apache.xerces.parsers.DOMParser();
            parser.parse(new InputSource(reader));

            Document doc = parser.getDocument();

            Element eltRoot = doc.getDocumentElement();
            Element eltSoapBody = getSingleElement(eltRoot,
"SOAP-ENV:Body");
            Element eltMethod = getFirstElement(eltSoapBody);

            String strTagName = eltMethod.getTagName();
            String strMethodName = eltMethod.getLocalName();

            System.out.println(strTagName);
            System.out.println(strMethodName);
        }
        catch(Exception e)
        {
            System.err.println(e.getMessage());
        }
    }
    static public Element getSingleElement (Element el, String strNodeName)
    {
        String sRet = null;
        NodeList nodes = el.getElementsByTagName(strNodeName);
        int nLength = nodes.getLength();
        if (nodes != null && nodes.getLength() == 1)
        {
            Node node = nodes.item(0);
            if (node.getNodeType() == Node.ELEMENT_NODE)
                return (Element)node;
        }
        return null;
    }

    static public Element getFirstElement (Element el)
    {
        String sRet = null;
        NodeList nodes = el.getChildNodes();
        if (nodes != null)
        {
            int nLength = nodes.getLength();

            for (int i = 0; i < nLength; i++)
            {
                Node node = nodes.item(i);
                if (node.getNodeType() == Node.ELEMENT_NODE)
                    return (Element)node;
            }
        }
        return null;
    }

}


Vadym Krevs
MERANT

Email:   Vadym.Krevs@merant.com
Phone:   +44 (0) 1635 565215
Address: Merant International Ltd.
         The Lawn, 22-30 Old Bath Road
         Newbury, Berkshire, RG14 1QN
         UK