/*
* 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: ClonerToResultTree.java 468645 2006-10-28 06:57:24Z minchau $
*/
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
}