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: XalanTransformState.java 468645 2006-10-28 06:57:24Z minchau $ 20 */ 21 22 package org.apache.xalan.transformer; 23 24 import javax.xml.transform.Transformer; 25 26 import org.apache.xalan.templates.ElemTemplate; 27 import org.apache.xalan.templates.ElemTemplateElement; 28 import org.apache.xml.dtm.DTM; 29 import org.apache.xml.dtm.DTMIterator; 30 import org.w3c.dom.Node; 31 import org.w3c.dom.traversal.NodeIterator; 32 33 /** 34 * Before the serializer merge, the TransformState interface was 35 * implemented by ResultTreeHandler. 36 */ 37 public class XalanTransformState 38 implements TransformState { 39 40 Node m_node = null; 41 ElemTemplateElement m_currentElement = null; 42 ElemTemplate m_currentTemplate = null; 43 ElemTemplate m_matchedTemplate = null; 44 int m_currentNodeHandle = DTM.NULL; 45 Node m_currentNode = null; 46 int m_matchedNode = DTM.NULL; 47 DTMIterator m_contextNodeList = null; 48 boolean m_elemPending = false; 49 TransformerImpl m_transformer = null; 50 51 /** 52 * @see org.apache.xml.serializer.TransformStateSetter#setCurrentNode(Node) 53 */ setCurrentNode(Node n)54 public void setCurrentNode(Node n) { 55 m_node = n; 56 } 57 58 /** 59 * @see org.apache.xml.serializer.TransformStateSetter#resetState(Transformer) 60 */ resetState(Transformer transformer)61 public void resetState(Transformer transformer) { 62 if ((transformer != null) && (transformer instanceof TransformerImpl)) { 63 m_transformer = (TransformerImpl)transformer; 64 m_currentElement = m_transformer.getCurrentElement(); 65 m_currentTemplate = m_transformer.getCurrentTemplate(); 66 m_matchedTemplate = m_transformer.getMatchedTemplate(); 67 int currentNodeHandle = m_transformer.getCurrentNode(); 68 DTM dtm = m_transformer.getXPathContext().getDTM(currentNodeHandle); 69 m_currentNode = dtm.getNode(currentNodeHandle); 70 m_matchedNode = m_transformer.getMatchedNode(); 71 m_contextNodeList = m_transformer.getContextNodeList(); 72 } 73 } 74 75 /** 76 * @see org.apache.xalan.transformer.TransformState#getCurrentElement() 77 */ getCurrentElement()78 public ElemTemplateElement getCurrentElement() { 79 if (m_elemPending) 80 return m_currentElement; 81 else 82 return m_transformer.getCurrentElement(); 83 } 84 85 /** 86 * @see org.apache.xalan.transformer.TransformState#getCurrentNode() 87 */ getCurrentNode()88 public Node getCurrentNode() { 89 if (m_currentNode != null) { 90 return m_currentNode; 91 } else { 92 DTM dtm = m_transformer.getXPathContext().getDTM(m_transformer.getCurrentNode()); 93 return dtm.getNode(m_transformer.getCurrentNode()); 94 } 95 } 96 97 /** 98 * @see org.apache.xalan.transformer.TransformState#getCurrentTemplate() 99 */ getCurrentTemplate()100 public ElemTemplate getCurrentTemplate() { 101 if (m_elemPending) 102 return m_currentTemplate; 103 else 104 return m_transformer.getCurrentTemplate(); 105 } 106 107 /** 108 * @see org.apache.xalan.transformer.TransformState#getMatchedTemplate() 109 */ getMatchedTemplate()110 public ElemTemplate getMatchedTemplate() { 111 if (m_elemPending) 112 return m_matchedTemplate; 113 else 114 return m_transformer.getMatchedTemplate(); 115 } 116 117 /** 118 * @see org.apache.xalan.transformer.TransformState#getMatchedNode() 119 */ getMatchedNode()120 public Node getMatchedNode() { 121 122 if (m_elemPending) { 123 DTM dtm = m_transformer.getXPathContext().getDTM(m_matchedNode); 124 return dtm.getNode(m_matchedNode); 125 } else { 126 DTM dtm = m_transformer.getXPathContext().getDTM(m_transformer.getMatchedNode()); 127 return dtm.getNode(m_transformer.getMatchedNode()); 128 } 129 } 130 131 /** 132 * @see org.apache.xalan.transformer.TransformState#getContextNodeList() 133 */ getContextNodeList()134 public NodeIterator getContextNodeList() { 135 if (m_elemPending) { 136 return new org.apache.xml.dtm.ref.DTMNodeIterator(m_contextNodeList); 137 } else { 138 return new org.apache.xml.dtm.ref.DTMNodeIterator(m_transformer.getContextNodeList()); 139 } 140 } 141 /** 142 * @see org.apache.xalan.transformer.TransformState#getTransformer() 143 */ getTransformer()144 public Transformer getTransformer() { 145 return m_transformer; 146 } 147 148 } 149