| /* |
| * 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. |
| */ |
| /* |
| * $Id: ElemExsltFuncResult.java 468643 2006-10-28 06:56:03Z minchau $ |
| */ |
| package org.apache.xalan.templates; |
| |
| import javax.xml.transform.TransformerException; |
| |
| import org.apache.xalan.transformer.TransformerImpl; |
| import org.apache.xpath.XPathContext; |
| import org.apache.xpath.objects.XObject; |
| |
| /** |
| * Handles the EXSLT result element within an EXSLT function element. |
| */ |
| public class ElemExsltFuncResult extends ElemVariable |
| { |
| static final long serialVersionUID = -3478311949388304563L; |
| /* |
| * To keep the binary compatibility put those three private global |
| * variables back, although they are never used in this verison |
| */ |
| // A flag indicating whether the return result is set |
| private boolean m_isResultSet = false; |
| |
| // The return result |
| private XObject m_result = null; |
| |
| // The frame size of the current caller |
| private int m_callerFrameSize = 0; |
| |
| /** |
| * Generate the EXSLT function return value, and assign it to the variable |
| * index slot assigned for it in ElemExsltFunction compose(). |
| * |
| */ |
| public void execute(TransformerImpl transformer) throws TransformerException |
| { |
| XPathContext context = transformer.getXPathContext(); |
| |
| // Verify that result has not already been set by another result |
| // element. Recursion is allowed: intermediate results are cleared |
| // in the owner ElemExsltFunction execute(). |
| if (transformer.currentFuncResultSeen()) { |
| throw new TransformerException("An EXSLT function cannot set more than one result!"); |
| } |
| |
| int sourceNode = context.getCurrentNode(); |
| |
| // Set the return value; |
| XObject var = getValue(transformer, sourceNode); |
| transformer.popCurrentFuncResult(); |
| transformer.pushCurrentFuncResult(var); |
| } |
| |
| /** |
| * Get an integer representation of the element type. |
| * |
| * @return An integer representation of the element, defined in the |
| * Constants class. |
| * @see org.apache.xalan.templates.Constants |
| */ |
| public int getXSLToken() |
| { |
| return Constants.EXSLT_ELEMNAME_FUNCRESULT; |
| } |
| |
| /** |
| * Return the node name, defined in the |
| * Constants class. |
| * @see org.apache.xalan.templates.Constants |
| * @return The node name |
| * |
| */ |
| public String getNodeName() |
| { |
| return Constants.EXSLT_ELEMNAME_FUNCRESULT_STRING; |
| } |
| } |