Spliting an xml document into another document

Apologies if this is the wrong place to post my query.


I have xml document as follows :

<CDRList>
  <cdr>
   <dpc>344</dpc>
   <opc>56</opc>
  </cdr>
  <cdr>
   <dpc>144</dpc>
   <opc>16</opc>
  </cdr>
  <cdr>
   <dpc>244</dpc>
   <opc>26</opc>
  </cdr>
</CDRList>

I parse the document using the following code

      // Parse in XML file, and construct a document
      DOMParser domParser = new DOMParser();
      domParser.parse("sample.xml");

      // construct a document
      Document document = domParser.getDocument();


      //get the root node in the DOM tree
      Element topLevel = document.getDocumentElement();

      // get children nodes - these will represent cdr
      NodeList childNodes = topLevel.getChildNodes();


I now want to create a new document containing the first two children
nodes of the sample.xml document.

I do it using the following code

      Document doc = (Document)
Class.forName("org.apache.xerces.dom.DocumentImpl").newInstance();

	//create a temp root node
      Element root = doc.createElement("temp"); 

      int iNodeCounter =0;
      while(childNodes != null & iNodeCounter < 2)
      {             
        child = childNodes.item(iNodeCounter);  
        if(child.getNodeType() == Node.ELEMENT_NODE)
        {
          root.appendChild(child);
	  }
        ++iNodeCounter
     }

     doc.appendChild(root);


I now pass this doc to be transformed using my TraX

 TransformerFactory m_Factory = TransformerFactory.newInstance();
 Templates m_Templates = m_Factory.newTemplates(new
StreamSource(m_strStyleSheet));
 DOMSource domSource = new DOMSource(node);
 stringWriter = new StringWriter();
 Transformer m_Transformer = m_Templates.newTransformer();
 m_Transformer.transform(domSource, new StreamResult(stringWriter));

this results in the following exception
org.w3c.dom.DOMException: D0M005 Wrong document

Does anyone know what I'm doing wrong?

thanks in advance


Sabrina


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