View Javadoc

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  
17  package org.apache.commons.jelly.tags.jetty;
18  
19  import org.apache.commons.jelly.JellyTagException;
20  import org.apache.commons.jelly.TagSupport;
21  import org.apache.commons.jelly.XMLOutput;
22  import org.mortbay.http.handler.NotFoundHandler;
23  
24  /***
25   * Declare a not found resource handler for a Jetty http server
26   *
27   * @author  rtl
28   * @version $Id: NotFoundHandlerTag.java 155420 2005-02-26 13:06:03Z dirkv $
29   */
30  public class NotFoundHandlerTag extends TagSupport {
31  
32      /*** Creates a new instance of NotFoundHandlerTag */
33      public NotFoundHandlerTag() {
34      }
35  
36      /***
37       * Perform the tag functionality. In this case, add a resource handler
38       * to the parent context, setting the allowed methods if required
39       *
40       * @param xmlOutput where to send output
41       * @throws Exception when an error occurs
42       */
43      public void doTag(XMLOutput xmlOutput) throws JellyTagException {
44          HttpContextTag httpContext = (HttpContextTag) findAncestorWithClass(
45              HttpContextTag.class);
46          if ( httpContext == null ) {
47              throw new JellyTagException( "<notFoundHandler> tag must be enclosed inside a <httpContext> tag" );
48          }
49          NotFoundHandler notFoundHandler = new NotFoundHandler();
50          httpContext.addHandler(notFoundHandler);
51          invokeBody(xmlOutput);
52      }
53  
54      //--------------------------------------------------------------------------
55      // Property accessors/mutators
56      //--------------------------------------------------------------------------
57  
58  }