1/* 2 * Licensed to the Apache Software Foundation (ASF) under one 3 * or more contributor license agreements. See the NOTICE file 4 * distributed with this work for additional information 5 * regarding copyright ownership. The ASF licenses this file 6 * to you under the Apache License, Version 2.0 (the "License"); 7 * you may not use this file except in compliance with the License. 8 * You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, software 13 * distributed under the License is distributed on an "AS IS" BASIS, 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 * See the License for the specific language governing permissions and 16 * limitations under the License. 17 */ 18/* 19 * $Id: ClonerToResultTree.java 468645 2006-10-28 06:57:24Z minchau $ 20 */ 21package org.apache.xalan.transformer; 22 23import javax.xml.transform.TransformerException; 24 25import org.apache.xalan.serialize.SerializerUtils; 26import org.apache.xml.dtm.DTM; 27import org.apache.xml.serializer.SerializationHandler; 28import org.apache.xml.utils.XMLString; 29 30/** 31 * Class used to clone a node, possibly including its children to 32 * a result tree. 33 * @xsl.usage internal 34 */ 35public class ClonerToResultTree 36{ 37 38// /** 39// * Clone an element with or without children. 40// * TODO: Fix or figure out node clone failure! 41// * the error condition is severe enough to halt processing. 42// * 43// * @param node The node to clone 44// * @param shouldCloneAttributes Flag indicating whether to 45// * clone children attributes 46// * 47// * @throws TransformerException 48// */ 49// public void cloneToResultTree(int node, boolean shouldCloneAttributes) 50// throws TransformerException 51// { 52// 53// try 54// { 55// XPathContext xctxt = m_transformer.getXPathContext(); 56// DTM dtm = xctxt.getDTM(node); 57// 58// int type = dtm.getNodeType(node); 59// switch (type) 60// { 61// case DTM.TEXT_NODE : 62// dtm.dispatchCharactersEvents(node, m_rth, false); 63// break; 64// case DTM.DOCUMENT_FRAGMENT_NODE : 65// case DTM.DOCUMENT_NODE : 66// 67// // Can't clone a document, but refrain from throwing an error 68// // so that copy-of will work 69// break; 70// case DTM.ELEMENT_NODE : 71// { 72// Attributes atts; 73// 74// if (shouldCloneAttributes) 75// { 76// m_rth.addAttributes(node); 77// m_rth.processNSDecls(node, type, dtm); 78// } 79// 80// String ns = dtm.getNamespaceURI(node); 81// String localName = dtm.getLocalName(node); 82// 83// m_rth.startElement(ns, localName, dtm.getNodeNameX(node), null); 84// } 85// break; 86// case DTM.CDATA_SECTION_NODE : 87// m_rth.startCDATA(); 88// dtm.dispatchCharactersEvents(node, m_rth, false); 89// m_rth.endCDATA(); 90// break; 91// case DTM.ATTRIBUTE_NODE : 92// m_rth.addAttribute(node); 93// break; 94// case DTM.COMMENT_NODE : 95// XMLString xstr = dtm.getStringValue (node); 96// xstr.dispatchAsComment(m_rth); 97// break; 98// case DTM.ENTITY_REFERENCE_NODE : 99// m_rth.entityReference(dtm.getNodeNameX(node)); 100// break; 101// case DTM.PROCESSING_INSTRUCTION_NODE : 102// { 103// // %REVIEW% Is the node name the same as the "target"? 104// m_rth.processingInstruction(dtm.getNodeNameX(node), 105// dtm.getNodeValue(node)); 106// } 107// break; 108// default : 109// //"Can not create item in result tree: "+node.getNodeName()); 110// m_transformer.getMsgMgr().error(null, 111// XSLTErrorResources.ER_CANT_CREATE_ITEM, 112// new Object[]{ dtm.getNodeName(node) }); 113// } 114// } 115// catch(org.xml.sax.SAXException se) 116// { 117// throw new TransformerException(se); 118// } 119// } // end cloneToResultTree function 120 121 /** 122 * Clone an element with or without children. 123 * TODO: Fix or figure out node clone failure! 124 * the error condition is severe enough to halt processing. 125 * 126 * @param node The node to clone 127 * @param shouldCloneAttributes Flag indicating whether to 128 * clone children attributes 129 * 130 * @throws TransformerException 131 */ 132 public static void cloneToResultTree(int node, int nodeType, DTM dtm, 133 SerializationHandler rth, 134 boolean shouldCloneAttributes) 135 throws TransformerException 136 { 137 138 try 139 { 140 switch (nodeType) 141 { 142 case DTM.TEXT_NODE : 143 dtm.dispatchCharactersEvents(node, rth, false); 144 break; 145 case DTM.DOCUMENT_FRAGMENT_NODE : 146 case DTM.DOCUMENT_NODE : 147 // Can't clone a document, but refrain from throwing an error 148 // so that copy-of will work 149 break; 150 case DTM.ELEMENT_NODE : 151 { 152 // Note: SAX apparently expects "no namespace" to be 153 // represented as "" rather than null. 154 String ns = dtm.getNamespaceURI(node); 155 if (ns==null) ns=""; 156 String localName = dtm.getLocalName(node); 157 // rth.startElement(ns, localName, dtm.getNodeNameX(node), null); 158 // don't call a real SAX startElement (as commented out above), 159 // call a SAX-like startElement, to be able to add attributes after this call 160 rth.startElement(ns, localName, dtm.getNodeNameX(node)); 161 162 // If outputting attrs as separate events, they must 163 // _follow_ the startElement event. (Think of the 164 // xsl:attribute directive.) 165 if (shouldCloneAttributes) 166 { 167 SerializerUtils.addAttributes(rth, node); 168 SerializerUtils.processNSDecls(rth, node, nodeType, dtm); 169 } 170 } 171 break; 172 case DTM.CDATA_SECTION_NODE : 173 rth.startCDATA(); 174 dtm.dispatchCharactersEvents(node, rth, false); 175 rth.endCDATA(); 176 break; 177 case DTM.ATTRIBUTE_NODE : 178 SerializerUtils.addAttribute(rth, node); 179 break; 180 case DTM.NAMESPACE_NODE: 181 // %REVIEW% Normally, these should have been handled with element. 182 // It's possible that someone may write a stylesheet that tries to 183 // clone them explicitly. If so, we need the equivalent of 184 // rth.addAttribute(). 185 SerializerUtils.processNSDecls(rth,node,DTM.NAMESPACE_NODE,dtm); 186 break; 187 case DTM.COMMENT_NODE : 188 XMLString xstr = dtm.getStringValue (node); 189 xstr.dispatchAsComment(rth); 190 break; 191 case DTM.ENTITY_REFERENCE_NODE : 192 rth.entityReference(dtm.getNodeNameX(node)); 193 break; 194 case DTM.PROCESSING_INSTRUCTION_NODE : 195 { 196 // %REVIEW% Is the node name the same as the "target"? 197 rth.processingInstruction(dtm.getNodeNameX(node), 198 dtm.getNodeValue(node)); 199 } 200 break; 201 default : 202 //"Can not create item in result tree: "+node.getNodeName()); 203 throw new TransformerException( 204 "Can't clone node: "+dtm.getNodeName(node)); 205 } 206 } 207 catch(org.xml.sax.SAXException se) 208 { 209 throw new TransformerException(se); 210 } 211 } // end cloneToResultTree function 212} 213