| /* |
| * The Apache Software License, Version 1.1 |
| * |
| * |
| * Copyright (c) 1999-2003 The Apache Software Foundation. All rights |
| * reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. The end-user documentation included with the redistribution, |
| * if any, must include the following acknowledgment: |
| * "This product includes software developed by the |
| * Apache Software Foundation (http://www.apache.org/)." |
| * Alternately, this acknowledgment may appear in the software itself, |
| * if and wherever such third-party acknowledgments normally appear. |
| * |
| * 4. The names "Xalan" and "Apache Software Foundation" must |
| * not be used to endorse or promote products derived from this |
| * software without prior written permission. For written |
| * permission, please contact apache@apache.org. |
| * |
| * 5. Products derived from this software may not be called "Apache", |
| * nor may "Apache" appear in their name, without prior written |
| * permission of the Apache Software Foundation. |
| * |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation and was |
| * originally based on software copyright (c) 1999, Lotus |
| * Development Corporation., http://www.lotus.com. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| */ |
| package org.apache.xpath.functions; |
| |
| import org.apache.xml.dtm.DTM; |
| import org.apache.xml.dtm.DTMIterator; |
| import org.apache.xpath.XPathContext; |
| import org.apache.xpath.axes.LocPathIterator; |
| import org.apache.xpath.axes.PredicatedNodeTest; |
| import org.apache.xpath.objects.XNodeSet; |
| import org.apache.xpath.objects.XObject; |
| import org.apache.xpath.axes.SubContextList; |
| import org.apache.xpath.patterns.StepPattern; |
| import org.apache.xalan.res.XSLMessages; |
| import org.apache.xalan.res.XSLTErrorResources; |
| |
| |
| /** |
| * Execute the current() function. |
| * @xsl.usage advanced |
| */ |
| public class FuncCurrent extends Function |
| { |
| |
| /** |
| * Execute the function. The function must return |
| * a valid object. |
| * @param xctxt The current execution context. |
| * @return A valid XObject. |
| * |
| * @throws javax.xml.transform.TransformerException |
| */ |
| public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException |
| { |
| |
| SubContextList subContextList = xctxt.getCurrentNodeList(); |
| int currentNode = DTM.NULL; |
| |
| if (null != subContextList) { |
| if (subContextList instanceof PredicatedNodeTest) { |
| LocPathIterator iter = ((PredicatedNodeTest)subContextList) |
| .getLocPathIterator(); |
| currentNode = iter.getCurrentContextNode(); |
| } else if(subContextList instanceof StepPattern) { |
| throw new RuntimeException(XSLMessages.createMessage( |
| XSLTErrorResources.ER_PROCESSOR_ERROR,null)); |
| } |
| } else { |
| // not predicate => ContextNode == CurrentNode |
| currentNode = xctxt.getContextNode(); |
| } |
| return new XNodeSet(currentNode, xctxt.getDTMManager()); |
| } |
| |
| /** |
| * No arguments to process, so this does nothing. |
| */ |
| public void fixupVariables(java.util.Vector vars, int globalsSize) |
| { |
| // no-op |
| } |
| |
| } |