package org.apache.xpath.objects;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.dom.traversal.NodeIterator;
import org.apache.xml.dtm.*;
import org.apache.xpath.NodeSetDTM;
import org.apache.xpath.XPathContext;
/**
* This class overrides the XNodeSet#object() method to provide the original
* Node object, NodeList object, or NodeIterator.
*/
public class XNodeSetForDOM extends XNodeSet
{
Object m_origObj;
public XNodeSetForDOM(Node node, DTMManager dtmMgr)
{
m_dtmMgr = dtmMgr;
m_origObj = node;
int dtmHandle = dtmMgr.getDTMHandleFromNode(node);
m_obj = new NodeSetDTM(dtmMgr);
((NodeSetDTM) m_obj).addNode(dtmHandle);
}
public XNodeSetForDOM(NodeList nodeList, XPathContext xctxt)
{
m_dtmMgr = xctxt.getDTMManager();
m_origObj = nodeList;
m_obj = new org.apache.xpath.NodeSetDTM(nodeList, xctxt);
}
public XNodeSetForDOM(NodeIterator nodeIter, XPathContext xctxt)
{
m_dtmMgr = xctxt.getDTMManager();
m_origObj = nodeIter;
m_obj = new org.apache.xpath.NodeSetDTM(nodeIter, xctxt);
}
/**
* Return the original DOM object that the user passed in. For use primarily
* by the extension mechanism.
*
* @return The object that this class wraps
*/
public Object object()
{
return m_origObj;
}
/**
* Cast result object to a nodelist. Always issues an error.
*
* @return null
*
* @throws javax.xml.transform.TransformerException
*/
public NodeIterator nodeset() throws javax.xml.transform.TransformerException
{
return (m_origObj instanceof NodeIterator)
? (NodeIterator)m_origObj : super.nodeset();
}
/**
* Cast result object to a nodelist. Always issues an error.
*
* @return null
*
* @throws javax.xml.transform.TransformerException
*/
public NodeList nodelist() throws javax.xml.transform.TransformerException
{
return (m_origObj instanceof NodeList)
? (NodeList)m_origObj : super.nodelist();
}
}