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 */ 21 package org.apache.xalan.transformer; 22 23 import javax.xml.transform.TransformerException; 24 25 import org.apache.xalan.serialize.SerializerUtils; 26 import org.apache.xml.dtm.DTM; 27 import org.apache.xml.serializer.SerializationHandler; 28 import 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 */ 35 public 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 */ cloneToResultTree(int node, int nodeType, DTM dtm, SerializationHandler rth, boolean shouldCloneAttributes)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