1 /* 2 * Copyright 2002,2004 The Apache Software Foundation. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 package org.apache.commons.jelly.xpath; 17 18 import org.apache.commons.jelly.TagSupport; 19 20 /*** An abstract base class useful for implementation inheritence 21 * 22 * @author <a href="mailto:jstrachan@apache.org">James Strachan</a> 23 * @version $Revision: 155420 $ 24 */ 25 public abstract class XPathTagSupport extends TagSupport { 26 27 // Implementation methods 28 //------------------------------------------------------------------------- 29 protected Object getXPathContext() { 30 XPathSource tag = (XPathSource) findAncestorWithClass( XPathSource.class ); 31 if ( tag != null ) { 32 return tag.getXPathSource(); 33 } 34 return null; 35 } 36 }