- 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);
- }
-
- /**
- * 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 org.apache.xpath.NodeSetDTM(nodeList, xctxt);
- org.apache.xpath.NodeSetDTM nsdtm=new org.apache.xpath.NodeSetDTM(nodeList, xctxt);
- m_last=nsdtm.getLength();
- m_obj = 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 org.apache.xpath.NodeSetDTM(nodeIter, xctxt);
- org.apache.xpath.NodeSetDTM nsdtm=new org.apache.xpath.NodeSetDTM(nodeIter, xctxt);
- m_last=nsdtm.getLength();
- m_obj = 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();
- }
-
-
-
- }