author | joehw |
Wed, 18 Oct 2017 13:25:49 -0700 | |
changeset 47359 | e1a6c0168741 |
parent 47216 | 71c04702a3d5 |
child 50614 | 3810c9a2efa1 |
permissions | -rw-r--r-- |
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/* |
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* reserved comment block |
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* DO NOT REMOVE OR ALTER! |
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*/ |
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/** |
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* Licensed to the Apache Software Foundation (ASF) under one |
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* or more contributor license agreements. See the NOTICE file |
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* distributed with this work for additional information |
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* regarding copyright ownership. The ASF licenses this file |
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* to you under the Apache License, Version 2.0 (the |
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* "License"); you may not use this file except in compliance |
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* with the License. You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, |
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* software distributed under the License is distributed on an |
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
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* KIND, either express or implied. See the License for the |
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* specific language governing permissions and limitations |
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* under the License. |
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*/ |
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package com.sun.org.apache.xml.internal.security.transforms.implementations; |
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import javax.xml.transform.TransformerException; |
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import com.sun.org.apache.xml.internal.dtm.DTM; |
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import com.sun.org.apache.xml.internal.security.utils.I18n; |
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import com.sun.org.apache.xml.internal.security.utils.XMLUtils; |
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import com.sun.org.apache.xml.internal.utils.QName; |
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import com.sun.org.apache.xpath.internal.NodeSetDTM; |
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import com.sun.org.apache.xpath.internal.XPathContext; |
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import com.sun.org.apache.xpath.internal.functions.Function; |
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import com.sun.org.apache.xpath.internal.objects.XNodeSet; |
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import com.sun.org.apache.xpath.internal.objects.XObject; |
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import com.sun.org.apache.xpath.internal.res.XPATHErrorResources; |
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import java.util.List; |
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import org.w3c.dom.Document; |
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import org.w3c.dom.Node; |
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/** |
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* The 'here()' function returns a node-set containing the attribute or |
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* processing instruction node or the parent element of the text node |
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* that directly bears the XPath expression. This expression results |
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* in an error if the containing XPath expression does not appear in the |
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* same XML document against which the XPath expression is being evaluated. |
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* |
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* Mainpart is stolen from FuncId.java |
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* |
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* This does crash under Xalan2.2.D7 and works under Xalan2.2.D9 |
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* |
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* To get this baby to work, a special trick has to be used. The function needs |
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* access to the Node where the XPath expression has been defined. This is done |
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* by constructing a {@link FuncHere} which has this Node as 'owner'. |
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* |
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* @see "http://www.w3.org/Signature/Drafts/xmldsig-core/Overview.html#function-here" |
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*/ |
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public class FuncHere extends Function { |
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/** |
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* |
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*/ |
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private static final long serialVersionUID = 1L; |
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/** |
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* The here function returns a node-set containing the attribute or |
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* processing instruction node or the parent element of the text node |
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* that directly bears the XPath expression. This expression results |
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* in an error if the containing XPath expression does not appear in the |
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* same XML document against which the XPath expression is being evaluated. |
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* |
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* @param xctxt |
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* @return the xobject |
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* @throws javax.xml.transform.TransformerException |
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*/ |
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@Override |
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public XObject execute(XPathContext xctxt) |
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throws javax.xml.transform.TransformerException { |
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Node xpathOwnerNode = (Node) xctxt.getOwnerObject(); |
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if (xpathOwnerNode == null) { |
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return null; |
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} |
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int xpathOwnerNodeDTM = xctxt.getDTMHandleFromNode(xpathOwnerNode); |
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int currentNode = xctxt.getCurrentNode(); |
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DTM dtm = xctxt.getDTM(currentNode); |
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int docContext = dtm.getDocument(); |
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if (DTM.NULL == docContext) { |
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error(xctxt, XPATHErrorResources.ER_CONTEXT_HAS_NO_OWNERDOC, null); |
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} |
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{ |
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// check whether currentNode and the node containing the XPath expression |
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// are in the same document |
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Document currentDoc = |
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XMLUtils.getOwnerDocument(dtm.getNode(currentNode)); |
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Document xpathOwnerDoc = XMLUtils.getOwnerDocument(xpathOwnerNode); |
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if (currentDoc != xpathOwnerDoc) { |
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throw new TransformerException(I18n.translate("xpath.funcHere.documentsDiffer")); |
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} |
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} |
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XNodeSet nodes = new XNodeSet(xctxt.getDTMManager()); |
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NodeSetDTM nodeSet = nodes.mutableNodeset(); |
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{ |
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int hereNode = DTM.NULL; |
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switch (dtm.getNodeType(xpathOwnerNodeDTM)) { |
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case Node.ATTRIBUTE_NODE : |
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case Node.PROCESSING_INSTRUCTION_NODE : { |
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// returns a node-set containing the attribute / processing instruction node |
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hereNode = xpathOwnerNodeDTM; |
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nodeSet.addNode(hereNode); |
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break; |
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} |
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case Node.TEXT_NODE : { |
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// returns a node-set containing the parent element of the |
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// text node that directly bears the XPath expression |
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hereNode = dtm.getParent(xpathOwnerNodeDTM); |
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nodeSet.addNode(hereNode); |
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break; |
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} |
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default : |
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break; |
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} |
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} |
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/** $todo$ Do I have to do this detach() call? */ |
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nodeSet.detach(); |
2 | 141 |
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return nodes; |
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} |
2 | 144 |
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/** |
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* No arguments to process, so this does nothing. |
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* @param vars |
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* @param globalsSize |
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*/ |
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public void fixupVariables(List<QName> vars, int globalsSize) { |
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// do nothing |
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} |
2 | 153 |
} |