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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.jms;
18  
19  import org.apache.commons.jelly.JellyTagException;
20  import org.apache.commons.jelly.MissingAttributeException;
21  import org.apache.commons.jelly.TagSupport;
22  import org.apache.commons.jelly.XMLOutput;
23  
24  /*** Defines a property on an outer JMS Message tag
25    *
26    * @author <a href="mailto:jstrachan@apache.org">James Strachan</a>
27    * @version $Revision: 155420 $
28    */
29  public class PropertyTag extends TagSupport {
30  
31      /*** Stores the name of the property */
32      private String name;
33  
34      /*** Stores the value of the property */
35      private Object value;
36  
37  
38      // Tag interface
39      //-------------------------------------------------------------------------
40      public void doTag(XMLOutput output) throws MissingAttributeException, JellyTagException {
41          if ( name == null ) {
42              throw new MissingAttributeException("name");
43          }
44          MessageTag tag = (MessageTag) findAncestorWithClass( MessageTag.class );
45          if ( tag == null ) {
46              throw new JellyTagException("<jms:property> tag must be within a <jms:message> tag");
47          }
48  
49          if ( value != null ) {
50              tag.addProperty(name, value);
51          }
52          else {
53              tag.addProperty(name, getBodyText());
54          }
55      }
56  
57  
58      // Properties
59      //-------------------------------------------------------------------------
60      /*** Sets the name of the JMS property
61        */
62      public void setName(String name) {
63          this.name = name;
64      }
65  
66      /*** Sets the value of the JMS property.
67        * If no value is set then the body of the tag is used
68        */
69      public void setValue(Object value) {
70          this.value = value;
71      }
72  }