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Java > Open Source Codes > org > apache > activemq > broker > region > policy > SimpleDispatchPolicy


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.region.policy;
19
20
21 import java.util.Iterator JavaDoc;
22 import java.util.List JavaDoc;
23 import org.apache.activemq.broker.region.MessageReference;
24 import org.apache.activemq.broker.region.Subscription;
25 import org.apache.activemq.filter.MessageEvaluationContext;
26
27 /**
28  * Simple dispatch policy that sends a message to every subscription that
29  * matches the message.
30  *
31  * @org.apache.xbean.XBean
32  *
33  * @version $Revision$
34  */
35 public class SimpleDispatchPolicy implements DispatchPolicy {
36
37     public boolean dispatch(MessageReference node, MessageEvaluationContext msgContext, List JavaDoc consumers) throws Exception JavaDoc {
38         int count = 0;
39         for (Iterator JavaDoc iter = consumers.iterator(); iter.hasNext();) {
40             Subscription sub = (Subscription) iter.next();
41             
42             // Don't deliver to browsers
43 if( sub.getConsumerInfo().isBrowser() )
44                 continue;
45             // Only dispatch to interested subscriptions
46 if (!sub.matches(node, msgContext))
47                 continue;
48             
49             sub.add(node);
50             count++;
51         }
52         return count > 0;
53     }
54
55 }
56
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