Namespace problem with Xerces >2.0.1

[Thomas Börkel]

HI!

We ran into another namespace problem after switching to Xerces 2.4.0. We are 
searching a node with Xalan 2.4.1 and then output the node as string. Xerces 
2.4.0 Serializer does not provide the full namespace information of that node, 
where 2.0.1 does, so that this node cannot stand alone anymore. The namespace 
information is still there, maybe Xalan somehow corrupts it.

Maybe (or likely) we are doing something wrong. Any help (or workaround) is 
greatly appreciated.

2.0.1:
TestNamespace
<a:child xmlns:a="TestNamespace">text</a:child>

2.4.0:
TestNamespace
<a:child>text</a:child>

Regards,
Thomas


Source:
-------
import java.io.*;
import javax.xml.parsers.*;
import org.apache.xml.serialize.*;
import org.apache.xpath.*;
import org.w3c.dom.*;
import org.xml.sax.*;

public class NamespaceTest2 {
  
  public static void main(String[] args) throws Exception {
    Document doc;
    Element tag;

    doc = getDocument("<a:root 
xmlns:a=\"TestNamespace\"><a:child>text</a:child></a:root>");
    tag = (Element)XPathAPI.selectSingleNode(doc, "/a:root/a:child");
    System.out.println(tag.getNamespaceURI());
    System.out.println(elementToString(tag));
  }
  
  public static Document getDocument(String xml) throws Exception {
    DocumentBuilderFactory dbf;
    DocumentBuilder db;
    Document doc;
    
    dbf = DocumentBuilderFactory.newInstance();
    dbf.setNamespaceAware(true);
    dbf.setValidating(true); 
    dbf.setAttribute("http://apache.org/xml/features/validation/dynamic";,
                    new Boolean(true));
    dbf.setAttribute("http://apache.org/xml/features/validation/schema";, 
                     new Boolean(true));
    db = dbf.newDocumentBuilder();
    doc = db.parse(new InputSource(new StringReader(xml)));
    return(doc);
  }
  
  public static String elementToString(Element element) throws Exception {
    OutputFormat outputFormat;
    XMLSerializer xmlSerializer;
    StringWriter sw;
    
    try {
      sw = new StringWriter();
      outputFormat = new OutputFormat();
      outputFormat.setOmitXMLDeclaration(true);
      outputFormat.setEncoding("utf-16");
      outputFormat.setPreserveSpace(true);
      xmlSerializer = new XMLSerializer(sw, outputFormat);
      xmlSerializer.serialize(element);
      return(sw.toString());
    } catch (IOException ioe) {
      return(ioe.getMessage());
    }
  }
}

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