code: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements. See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership. The ASF licenses this file
   * to you under the Apache License, Version 2.0 (the  "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  /*
   * $Id$
   */
  package org.apache.xalan.transformer;
  
  import javax.xml.transform.TransformerException;
  
  import org.apache.xalan.serialize.SerializerUtils;
  import org.apache.xml.dtm.DTM;
  import org.apache.xml.serializer.SerializationHandler;
  import org.apache.xml.utils.XMLString;
  
  /**
   * Class used to clone a node, possibly including its children to 
   * a result tree.
   * @xsl.usage internal
   */
  public class ClonerToResultTree
  {
  
  //  /**
  //   * Clone an element with or without children.
  //   * TODO: Fix or figure out node clone failure!
  //   * the error condition is severe enough to halt processing.
  //   *
  //   * @param node The node to clone
  //   * @param shouldCloneAttributes Flag indicating whether to 
  //   * clone children attributes
  //   * 
  //   * @throws TransformerException
  //   */
  //  public void cloneToResultTree(int node, boolean shouldCloneAttributes)
  //    throws TransformerException
  //  {
  //
  //    try
  //    {
  //      XPathContext xctxt = m_transformer.getXPathContext();
  //      DTM dtm = xctxt.getDTM(node);
  //
  //      int type = dtm.getNodeType(node);
  //      switch (type)
  //      {
  //      case DTM.TEXT_NODE :
  //        dtm.dispatchCharactersEvents(node, m_rth, false);
  //        break;
  //      case DTM.DOCUMENT_FRAGMENT_NODE :
  //      case DTM.DOCUMENT_NODE :
  //
  //        // Can't clone a document, but refrain from throwing an error
  //        // so that copy-of will work
  //        break;
  //      case DTM.ELEMENT_NODE :
  //        {
  //          Attributes atts;
  //
  //          if (shouldCloneAttributes)
  //          {
  //            m_rth.addAttributes(node);
  //            m_rth.processNSDecls(node, type, dtm);
  //          }
  //
  //          String ns = dtm.getNamespaceURI(node);
  //          String localName = dtm.getLocalName(node);
  //
  //          m_rth.startElement(ns, localName, dtm.getNodeNameX(node), null);
  //        }
  //        break;
  //      case DTM.CDATA_SECTION_NODE :
  //        m_rth.startCDATA();          
  //        dtm.dispatchCharactersEvents(node, m_rth, false);
  //        m_rth.endCDATA();
  //        break;
  //      case DTM.ATTRIBUTE_NODE :
  //        m_rth.addAttribute(node);
  //        break;
  //      case DTM.COMMENT_NODE :
  //        XMLString xstr = dtm.getStringValue (node);
  //        xstr.dispatchAsComment(m_rth);
  //        break;
  //      case DTM.ENTITY_REFERENCE_NODE :
  //        m_rth.entityReference(dtm.getNodeNameX(node));
  //        break;
  //      case DTM.PROCESSING_INSTRUCTION_NODE :
  //        {
  //          // %REVIEW% Is the node name the same as the "target"?
  //          m_rth.processingInstruction(dtm.getNodeNameX(node), 
  //                                      dtm.getNodeValue(node));
  //        }
  //        break;
  //      default :
  //        //"Can not create item in result tree: "+node.getNodeName());
  //        m_transformer.getMsgMgr().error(null, 
  //                         XSLTErrorResources.ER_CANT_CREATE_ITEM,
  //                         new Object[]{ dtm.getNodeName(node) });  
  //      }
  //    }
  //    catch(org.xml.sax.SAXException se)
  //    {
  //      throw new TransformerException(se);
  //    }
  //  }  // end cloneToResultTree function
    
    /**
     * Clone an element with or without children.
     * TODO: Fix or figure out node clone failure!
     * the error condition is severe enough to halt processing.
     *
     * @param node The node to clone
     * @param shouldCloneAttributes Flag indicating whether to 
     * clone children attributes
     * 
     * @throws TransformerException
     */
    public static void cloneToResultTree(int node, int nodeType, DTM dtm, 
                                               SerializationHandler rth,
                                               boolean shouldCloneAttributes)
      throws TransformerException
    {
  
      try
      {
        switch (nodeType)
        {
        case DTM.TEXT_NODE :
          dtm.dispatchCharactersEvents(node, rth, false);
          break;
        case DTM.DOCUMENT_FRAGMENT_NODE :
        case DTM.DOCUMENT_NODE :
          // Can't clone a document, but refrain from throwing an error
          // so that copy-of will work
          break;
        case DTM.ELEMENT_NODE :
          {
            // Note: SAX apparently expects "no namespace" to be
            // represented as "" rather than null.
            String ns = dtm.getNamespaceURI(node);
            if (ns==null) ns="";
            String localName = dtm.getLocalName(node);
        //  rth.startElement(ns, localName, dtm.getNodeNameX(node), null);
        //  don't call a real SAX startElement (as commented out above),
        //  call a SAX-like startElement, to be able to add attributes after this call
            rth.startElement(ns, localName, dtm.getNodeNameX(node));
            
  	  // If outputting attrs as separate events, they must
  	  // _follow_ the startElement event. (Think of the
  	  // xsl:attribute directive.)
            if (shouldCloneAttributes)
            {
              SerializerUtils.addAttributes(rth, node);
              SerializerUtils.processNSDecls(rth, node, nodeType, dtm);
            }
          }
          break;
        case DTM.CDATA_SECTION_NODE :
          rth.startCDATA();          
          dtm.dispatchCharactersEvents(node, rth, false);
          rth.endCDATA();
          break;
        case DTM.ATTRIBUTE_NODE :
          SerializerUtils.addAttribute(rth, node);
          break;
  			case DTM.NAMESPACE_NODE:
  				// %REVIEW% Normally, these should have been handled with element.
  				// It's possible that someone may write a stylesheet that tries to
  				// clone them explicitly. If so, we need the equivalent of
  				// rth.addAttribute().
    			    SerializerUtils.processNSDecls(rth,node,DTM.NAMESPACE_NODE,dtm);
  				break;
        case DTM.COMMENT_NODE :
          XMLString xstr = dtm.getStringValue (node);
          xstr.dispatchAsComment(rth);
          break;
        case DTM.ENTITY_REFERENCE_NODE :
          rth.entityReference(dtm.getNodeNameX(node));
          break;
        case DTM.PROCESSING_INSTRUCTION_NODE :
          {
            // %REVIEW% Is the node name the same as the "target"?
            rth.processingInstruction(dtm.getNodeNameX(node), 
                                        dtm.getNodeValue(node));
          }
          break;
        default :
          //"Can not create item in result tree: "+node.getNodeName());
          throw new  TransformerException(
                           "Can't clone node: "+dtm.getNodeName(node));
        }
      }
      catch(org.xml.sax.SAXException se)
      {
        throw new TransformerException(se);
      }
    }  // end cloneToResultTree function
  }
  