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Java > Open Source Codes > org > apache > activemq > tool > MemConsumer


1 /**
2  *
3  * Licensed to the Apache Software Foundation (ASF) under one or more
4  * contributor license agreements. See the NOTICE file distributed with
5  * this work for additional information regarding copyright ownership.
6  * The ASF licenses this file to You under the Apache License, Version 2.0
7  * (the "License"); you may not use this file except in compliance with
8  * the License. You may obtain a copy of the License at
9  *
10  * http://www.apache.org/licenses/LICENSE-2.0
11  *
12  * Unless required by applicable law or agreed to in writing, software
13  * distributed under the License is distributed on an "AS IS" BASIS,
14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15  * See the License for the specific language governing permissions and
16  * limitations under the License.
17  */
18 package org.apache.activemq.tool;
19
20 import org.apache.activemq.tool.MemMessageIdList;
21
22 import javax.jms.*;
23
24 /**
25  * @version $Revision: 1.3 $
26  */
27 public class MemConsumer extends MemMessageIdList implements MessageListener {
28     protected Connection connection;
29     protected MessageConsumer consumer;
30     protected long counter = 0;
31     protected boolean isParent = false;
32     protected boolean inOrder = true;
33
34
35     public MemConsumer() {
36         super();
37     }
38
39     public MemConsumer(ConnectionFactory fac, Destination dest, String JavaDoc consumerName) throws JMSException {
40         connection = fac.createConnection();
41         Session s = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
42         if (dest instanceof Topic && consumerName != null && consumerName.length() > 0) {
43             consumer = s.createDurableSubscriber((Topic) dest, consumerName);
44         } else {
45             consumer = s.createConsumer(dest);
46         }
47         consumer.setMessageListener(this);
48     }
49
50     public MemConsumer(ConnectionFactory fac, Destination dest) throws JMSException {
51         this(fac, dest, null);
52     }
53
54     public void start() throws JMSException {
55         connection.start();
56     }
57
58     public void stop() throws JMSException {
59         connection.stop();
60     }
61
62     public void shutDown() throws JMSException {
63         connection.close();
64     }
65
66
67     public Message receive() throws JMSException {
68         return consumer.receive();
69     }
70
71     public Message receive(long wait) throws JMSException {
72         return consumer.receive(wait);
73     }
74
75     static long ctr = 0;
76
77     public void onMessage(Message msg) {
78         super.onMessage(msg);
79
80         if (isParent) {
81             try {
82                 long ctr = msg.getLongProperty("counter");
83                 if (counter != ctr) {
84                     inOrder = false;
85                 }
86                 counter++;
87
88             } catch (Exception JavaDoc e) {
89                 e.printStackTrace();
90             }
91         }
92     }
93
94
95     public boolean isInOrder() {
96         return inOrder;
97     }
98
99
100     public void setAsParent(boolean isParent) {
101         this.isParent = isParent;
102     }
103
104     public boolean isParent() {
105         return this.isParent;
106     }
107
108
109 }
110
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