| 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; |
| |
| /** |
| * Wrap an XNodeSetForDOM around another XNodeset |
| * |
| * @param val Value of the XNodeSet object |
| */ |
| /* |
| public XNodeSetForDOM(XNodeSet val) |
| { |
| super(val); |
| if(val instanceof XNodeSetForDOM) |
| { |
| m_origObj = ((XNodeSetForDOM)val).m_origObj; |
| } |
| } |
| */ |
| |
| /** |
| * Wrap an XNodeSetForDOM around a single DOM Node. |
| * |
| * (Interesting that this one takes the DTM Manager explicitly |
| * while others get it via the xctxt. Should we reconcile?) |
| * |
| */ |
| public XNodeSetForDOM(Node node, DTMManager dtmMgr) |
| { |
| super(dtmMgr); |
| m_origObj = node; |
| int dtmHandle = dtmMgr.getDTMHandleFromNode(node); |
| |
| NodeSetDTM nsdtm = new NodeSetDTM(dtmMgr); |
| nsdtm.addNode(dtmHandle); |
| m_obj=nsdtm; |
| } |
| |
| /** |
| * Wrap an XNodeSetForDOM around a DOM NodeList |
| * |
| */ |
| public XNodeSetForDOM(NodeList nodeList, XPathContext xctxt) |
| { |
| super(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); |
| NodeSetDTM nsdtm=new org.apache.xpath.NodeSetDTM(nodeList, xctxt); |
| m_last=nsdtm.getLength(); |
| m_obj = nsdtm; |
| } |
| |
| /** |
| * Wrap an XNodeSetForDOM around a DOM NodeIterator |
| * |
| */ |
| public XNodeSetForDOM(NodeIterator nodeIter, XPathContext xctxt) |
| { |
| super(xctxt.getDTMManager()); |
| 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); |
| 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(); |
| } |
| |
| |
| |
| } |