/*
 * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved.
 */
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/** * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. */
package com.sun.org.apache.xpath.internal.functions; import com.sun.org.apache.xml.internal.dtm.DTM; import com.sun.org.apache.xml.internal.utils.QName; import com.sun.org.apache.xpath.internal.NodeSetDTM; import com.sun.org.apache.xpath.internal.XPathContext; import com.sun.org.apache.xpath.internal.objects.XNodeSet; import com.sun.org.apache.xpath.internal.objects.XObject; import com.sun.org.apache.xpath.internal.res.XPATHErrorResources; import java.util.List; import javax.xml.transform.TransformerException; import org.w3c.dom.Document; import org.w3c.dom.Node;
Execute the XML Signature here() function.
@LastModified: Oct 2017
/** * Execute the XML Signature here() function. * * @LastModified: Oct 2017 */
public final class FuncHere extends Function { private static final long serialVersionUID = 4328660760070034592L; @Override public XObject execute(XPathContext xctxt) throws TransformerException { Node xpathOwnerNode = (Node)xctxt.getOwnerObject(); if (xpathOwnerNode == null) { return null; } int xpathOwnerNodeDTM = xctxt.getDTMHandleFromNode(xpathOwnerNode); int currentNode = xctxt.getCurrentNode(); DTM dtm = xctxt.getDTM(currentNode); int docContext = dtm.getDocument(); if (docContext == DTM.NULL) { error(xctxt, XPATHErrorResources.ER_CONTEXT_HAS_NO_OWNERDOC, null); } // check whether currentNode and the node containing the XPath // expression are in the same document Document currentDoc = getOwnerDocument(dtm.getNode(currentNode)); Document xpathOwnerDoc = getOwnerDocument(xpathOwnerNode); if (currentDoc != xpathOwnerDoc) { throw new TransformerException("Owner documents differ"); } XNodeSet nodes = new XNodeSet(xctxt.getDTMManager()); NodeSetDTM nodeSet = nodes.mutableNodeset(); int hereNode = DTM.NULL; switch (dtm.getNodeType(xpathOwnerNodeDTM)) { case Node.ATTRIBUTE_NODE: case Node.PROCESSING_INSTRUCTION_NODE: { // returns a node-set containing the attribute / processing // instruction node hereNode = xpathOwnerNodeDTM; nodeSet.addNode(hereNode); break; } case Node.TEXT_NODE : { // returns a node-set containing the parent element of the // text node that directly bears the XPath expression hereNode = dtm.getParent(xpathOwnerNodeDTM); nodeSet.addNode(hereNode); break; } default : break; } /** $todo$ Do I have to do this detach() call? */ nodeSet.detach(); return nodes; } private static Document getOwnerDocument(Node node) { if (node.getNodeType() == Node.DOCUMENT_NODE) { return (Document)node; } return node.getOwnerDocument(); } @Override public void fixupVariables(List<QName> vars, int globalsSize) { } }