19f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson/* 29f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * Licensed to the Apache Software Foundation (ASF) under one 39f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * or more contributor license agreements. See the NOTICE file 49f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * distributed with this work for additional information 59f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * regarding copyright ownership. The ASF licenses this file 69f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * to you under the Apache License, Version 2.0 (the "License"); 79f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * you may not use this file except in compliance with the License. 89f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * You may obtain a copy of the License at 99f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * 109f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * http://www.apache.org/licenses/LICENSE-2.0 119f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * 129f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * Unless required by applicable law or agreed to in writing, software 139f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * distributed under the License is distributed on an "AS IS" BASIS, 149f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 159f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * See the License for the specific language governing permissions and 169f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * limitations under the License. 179f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson */ 189f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson/* 199f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * $Id: TreeWalker2Result.java 468645 2006-10-28 06:57:24Z minchau $ 209f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson */ 219f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilsonpackage org.apache.xalan.transformer; 229f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 239f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilsonimport org.apache.xalan.serialize.SerializerUtils; 249f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilsonimport org.apache.xml.dtm.DTM; 259f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilsonimport org.apache.xml.dtm.ref.DTMTreeWalker; 269f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilsonimport org.apache.xml.serializer.SerializationHandler; 279f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilsonimport org.apache.xpath.XPathContext; 289f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 299f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson/** 309f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * Handle a walk of a tree, but screen out attributes for 319f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * the result tree. 329f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * @xsl.usage internal 339f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson */ 349f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilsonpublic class TreeWalker2Result extends DTMTreeWalker 359f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson{ 369f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 379f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson /** The transformer instance */ 389f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson TransformerImpl m_transformer; 399f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 409f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson /** The result tree handler */ 419f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson SerializationHandler m_handler; 429f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 439f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson /** Node where to start the tree walk */ 449f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson int m_startNode; 459f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 469f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson /** 479f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * Constructor. 489f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * 499f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * @param transformer Non-null transformer instance 509f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * @param handler The Result tree handler to use 519f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson */ 529f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson public TreeWalker2Result(TransformerImpl transformer, 539f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson SerializationHandler handler) 549f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson { 559f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 569f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson super(handler, null); 579f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 589f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson m_transformer = transformer; 599f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson m_handler = handler; 609f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson } 619f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 629f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson /** 639f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * Perform a pre-order traversal non-recursive style. 649f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * 659f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * @param pos Start node for traversal 669f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * 679f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * @throws TransformerException 689f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson */ 699f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson public void traverse(int pos) throws org.xml.sax.SAXException 709f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson { 719f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson m_dtm = m_transformer.getXPathContext().getDTM(pos); 729f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson m_startNode = pos; 739f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 749f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson super.traverse(pos); 759f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson } 769f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 779f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson /** 789f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * End processing of given node 799f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * 809f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * 819f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * @param node Node we just finished processing 829f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * 839f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * @throws org.xml.sax.SAXException 849f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson */ 859f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson protected void endNode(int node) throws org.xml.sax.SAXException 869f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson { 879f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson super.endNode(node); 889f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson if(DTM.ELEMENT_NODE == m_dtm.getNodeType(node)) 899f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson { 909f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson m_transformer.getXPathContext().popCurrentNode(); 919f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson } 929f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson } 939f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 949f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson /** 959f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * Start traversal of the tree at the given node 969f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * 979f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * 989f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * @param node Starting node for traversal 999f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * 1009f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson * @throws TransformerException 1019f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson */ 1029f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson protected void startNode(int node) throws org.xml.sax.SAXException 1039f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson { 1049f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 1059f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson XPathContext xcntxt = m_transformer.getXPathContext(); 1069f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson try 1079f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson { 1089f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 1099f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson if (DTM.ELEMENT_NODE == m_dtm.getNodeType(node)) 1109f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson { 1119f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson xcntxt.pushCurrentNode(node); 1129f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 1139f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson if(m_startNode != node) 1149f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson { 1159f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson super.startNode(node); 1169f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson } 1179f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson else 1189f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson { 1199f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson String elemName = m_dtm.getNodeName(node); 1209f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson String localName = m_dtm.getLocalName(node); 1219f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson String namespace = m_dtm.getNamespaceURI(node); 1229f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 1239f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson //xcntxt.pushCurrentNode(node); 1249f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson // SAX-like call to allow adding attributes afterwards 1259f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson m_handler.startElement(namespace, localName, elemName); 1269f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson boolean hasNSDecls = false; 1279f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson DTM dtm = m_dtm; 1289f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson for (int ns = dtm.getFirstNamespaceNode(node, true); 1299f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson DTM.NULL != ns; ns = dtm.getNextNamespaceNode(node, ns, true)) 1309f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson { 1319f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson SerializerUtils.ensureNamespaceDeclDeclared(m_handler,dtm, ns); 1329f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson } 1339f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 1349f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 1359f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson for (int attr = dtm.getFirstAttribute(node); 1369f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson DTM.NULL != attr; attr = dtm.getNextAttribute(attr)) 1379f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson { 1389f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson SerializerUtils.addAttribute(m_handler, attr); 1399f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson } 1409f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson } 1419f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson 1429f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson } 1439f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson else 1449f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson { 1459f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson xcntxt.pushCurrentNode(node); 1469f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson super.startNode(node); 1479f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson xcntxt.popCurrentNode(); 1489f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson } 1499f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson } 1509f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson catch(javax.xml.transform.TransformerException te) 1519f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson { 1529f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson throw new org.xml.sax.SAXException(te); 1539f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson } 1549f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson } 1559f8118474e9513f7a5b7d2a05e4a0fb15d1a6569Jesse Wilson} 156