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Java > Open Source Codes > org > apache > activemq > broker > jmx > TopicSubscriptionView


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.broker.jmx;
19
20 import org.apache.activemq.broker.region.TopicSubscription;
21
22 /**
23  *
24  * @version $Revision: 426366 $
25  */
26 public class TopicSubscriptionView extends SubscriptionView implements TopicSubscriptionViewMBean {
27
28     public TopicSubscriptionView(String JavaDoc clientId, TopicSubscription subs) {
29         super(clientId, subs);
30     }
31
32     protected TopicSubscription getTopicSubscription() {
33         return (TopicSubscription) subscription;
34     }
35
36     /**
37      * @return the number of messages discarded due to being a slow consumer
38      */
39     public int getDiscardedCount() {
40         TopicSubscription topicSubscription = getTopicSubscription();
41         return topicSubscription != null ? topicSubscription.discarded() : 0;
42     }
43
44     /**
45      * @return the maximun number of messages that can be pending.
46      */
47     public int getMaximumPendingQueueSize() {
48         TopicSubscription topicSubscription = getTopicSubscription();
49         return topicSubscription != null ? topicSubscription.getMaximumPendingMessages() : 0;
50     }
51     
52     /**
53      *
54      */
55     public void setMaximumPendingQueueSize(int max) {
56         TopicSubscription topicSubscription = getTopicSubscription();
57         if ( topicSubscription != null ) {
58             topicSubscription.setMaximumPendingMessages(max);
59         }
60     }
61 }
62
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