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/*
* $Id: XNodeSetForDOM.java,v 1.9 2010-11-01 04:35:16 joehw Exp $
*/
package com.sun.org.apache.xpath.internal.objects;
import com.sun.org.apache.xml.internal.dtm.DTMManager;
import com.sun.org.apache.xpath.internal.NodeSetDTM;
import com.sun.org.apache.xpath.internal.XPathContext;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.dom.traversal.NodeIterator;
/**
* This class overrides the XNodeSet#object() method to provide the original
* Node object, NodeList object, or NodeIterator.
*/
public class XNodeSetForDOM extends XNodeSet
{
static final long serialVersionUID = -8396190713754624640L;
Object m_origObj;
public XNodeSetForDOM(Node node, DTMManager dtmMgr)
{
m_dtmMgr = dtmMgr;
m_origObj = node;
int dtmHandle = dtmMgr.getDTMHandleFromNode(node);
setObject(new NodeSetDTM(dtmMgr));
((NodeSetDTM) m_obj).addNode(dtmHandle);
}
/**
* Construct a XNodeSet object.
*
* @param val Value of the XNodeSet object
*/
public XNodeSetForDOM(XNodeSet val)
{
super(val);
if(val instanceof XNodeSetForDOM)
m_origObj = ((XNodeSetForDOM)val).m_origObj;
}
public XNodeSetForDOM(NodeList nodeList, XPathContext xctxt)
{
m_dtmMgr = xctxt.getDTMManager();
m_origObj = nodeList;
// JKESS 20020514: Longer-term solution is to force
// folks to request length through an accessor, so we can defer this
// retrieval... but that requires an API change.
// m_obj=new com.sun.org.apache.xpath.internal.NodeSetDTM(nodeList, xctxt);
com.sun.org.apache.xpath.internal.NodeSetDTM nsdtm=new com.sun.org.apache.xpath.internal.NodeSetDTM(nodeList, xctxt);
m_last=nsdtm.getLength();
setObject(nsdtm);
}
public XNodeSetForDOM(NodeIterator nodeIter, XPathContext xctxt)
{
m_dtmMgr = xctxt.getDTMManager();
m_origObj = nodeIter;
// JKESS 20020514: Longer-term solution is to force
// folks to request length through an accessor, so we can defer this
// retrieval... but that requires an API change.
// m_obj = new com.sun.org.apache.xpath.internal.NodeSetDTM(nodeIter, xctxt);
com.sun.org.apache.xpath.internal.NodeSetDTM nsdtm=new com.sun.org.apache.xpath.internal.NodeSetDTM(nodeIter, xctxt);
m_last=nsdtm.getLength();
setObject(nsdtm);
}
/**
* 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();
}
}