Coverage report

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org.apache.commons.jelly.tags.jms.MessageTag
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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  
 package org.apache.commons.jelly.tags.jms;
 17  
 
 18  
 import javax.jms.Destination;
 19  
 import javax.jms.Message;
 20  
 import javax.jms.JMSException;
 21  
 
 22  
 import org.apache.commons.jelly.JellyTagException;
 23  
 import org.apache.commons.jelly.TagSupport;
 24  
 import org.apache.commons.jelly.XMLOutput;
 25  
 
 26  
 import org.apache.commons.messenger.Messenger;
 27  
 
 28  
 /** A tag which creates a JMS message
 29  
   *
 30  
   * @author <a href="mailto:jstrachan@apache.org">James Strachan</a>
 31  
   * @version $Revision: 1.5 $
 32  
   */
 33  0
 public class MessageTag extends TagSupport {
 34  
 
 35  
     /** The name of the Message variable that is created */
 36  
     private String var;
 37  
 
 38  
     /** The JMS Message created */
 39  
     private Message message;
 40  
 
 41  
     /** The Messenger used to access the JMS connection */
 42  
     private Messenger connection;
 43  
 
 44  0
     public MessageTag() {
 45  0
     }
 46  
 
 47  
     /** Adds a JMS property to the message */
 48  
     public void addProperty(String name, Object value) throws JellyTagException {
 49  0
         Message message = getMessage();
 50  
 
 51  
         try {
 52  0
             message.setObjectProperty(name, value);
 53  0
         } catch (JMSException e) {
 54  0
             throw new JellyTagException(e);
 55  
         }
 56  0
     }
 57  
 
 58  
     // Tag interface
 59  
     //-------------------------------------------------------------------------
 60  
     public void doTag(XMLOutput output) throws JellyTagException {
 61  0
         if ( var == null ) {
 62  
             // expose message to parent message consumer
 63  0
             SendTag tag = (SendTag) findAncestorWithClass( SendTag.class );
 64  0
             if ( tag == null ) {
 65  0
                 throw new JellyTagException("<jms:message> tags must either have the 'var' attribute specified or be used inside a <jms:send> tag");
 66  
             }
 67  
 
 68  0
             tag.setMessage( getMessage() );
 69  
         }
 70  
         else {
 71  
 
 72  0
             context.setVariable( var, getMessage() );
 73  
 
 74  
         }
 75  0
     }
 76  
 
 77  
     // Properties
 78  
     //-------------------------------------------------------------------------
 79  
 
 80  
     /** Sets the name of the variable that the message will be exported to */
 81  
     public void setVar(String var) {
 82  0
         this.var = class="keyword">var;
 83  0
     }
 84  
 
 85  
     public Messenger getConnection() throws JellyTagException {
 86  0
         if ( connection == null ) {
 87  0
             return findConnection();
 88  
         }
 89  0
         return connection;
 90  
     }
 91  
 
 92  
     /**
 93  
      * Sets the Messenger (the JMS connection pool) that will be used to send the message
 94  
      */
 95  
     public void setConnection(Messenger connection) {
 96  0
         this.connection = connection;
 97  0
     }
 98  
 
 99  
     public Message getMessage() throws JellyTagException {
 100  0
         if ( message == null ) {
 101  0
             message = createMessage();
 102  
         }
 103  0
         return message;
 104  
     }
 105  
 
 106  
 
 107  
     // JMS related properties
 108  
 
 109  
     /**
 110  
      * Sets the JMS Correlation ID to be used on the message
 111  
      */
 112  
     public void setCorrelationID(String correlationID) throws JellyTagException {
 113  
         try {
 114  0
             getMessage().setJMSCorrelationID(correlationID);
 115  0
         }
 116  
         catch (JMSException e) {
 117  0
             throw new JellyTagException(e);
 118  
         }
 119  0
     }
 120  
 
 121  
     /**
 122  
      * Sets the reply-to destination to add to the message
 123  
      */
 124  
     public void setReplyTo(Destination destination) throws JellyTagException {
 125  
         try {
 126  0
             getMessage().setJMSReplyTo(destination);
 127  0
         }
 128  
         catch (JMSException e) {
 129  0
             throw new JellyTagException(e);
 130  
         }
 131  0
     }
 132  
 
 133  
     /**
 134  
      * Sets the type name of the message
 135  
      */
 136  
     public void setType(String type) throws JellyTagException {
 137  
         try {
 138  0
             getMessage().setJMSType(type);
 139  0
         }
 140  
         catch (JMSException e) {
 141  0
             throw new JellyTagException(e);
 142  
         }
 143  0
     }
 144  
 
 145  
     // Implementation methods
 146  
     //-------------------------------------------------------------------------
 147  
     protected Messenger findConnection() throws JellyTagException {
 148  0
         ConnectionContext messengerTag = (ConnectionContext) findAncestorWithClass( ConnectionContext.class );
 149  0
         if ( messengerTag == null ) {
 150  0
             throw new JellyTagException("This tag must be within a <jms:connection> tag or the 'connection' attribute should be specified");
 151  
         }
 152  
 
 153  
         try {
 154  0
             return messengerTag.getConnection();
 155  
         }
 156  
         catch (JMSException e) {
 157  0
             throw new JellyTagException(e);
 158  
         }
 159  
     }
 160  
 
 161  
     protected Message createMessage() throws JellyTagException {
 162  
         try {
 163  0
             return getConnection().createMessage();
 164  
         } catch (JMSException e) {
 165  0
             throw new JellyTagException(e);
 166  
         }
 167  
     }
 168  
 }

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