1 /***
2 *
3 * Copyright 2004 Protique Ltd
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 **/
18 package org.codehaus.activemq.service.impl;
19
20 import EDU.oswego.cs.dl.util.concurrent.ConcurrentHashMap;
21 import org.codehaus.activemq.DuplicateDurableSubscriptionException;
22 import org.codehaus.activemq.broker.BrokerClient;
23 import org.codehaus.activemq.filter.Filter;
24 import org.codehaus.activemq.message.ConsumerInfo;
25 import org.codehaus.activemq.service.Dispatcher;
26 import org.codehaus.activemq.service.Subscription;
27 import org.codehaus.activemq.service.SubscriptionContainer;
28
29 import javax.jms.JMSException;
30 import java.util.Iterator;
31 import java.util.Map;
32
33 /***
34 * A default RAM only implementation of the {@link SubscriptionContainer}
35 *
36 * @version $Revision: 1.1 $
37 */
38 public class SubscriptionContainerImpl implements SubscriptionContainer {
39 private Map subscriptions;
40
41 public SubscriptionContainerImpl() {
42 this(new ConcurrentHashMap());
43 }
44
45 public SubscriptionContainerImpl(Map subscriptions) {
46 this.subscriptions = subscriptions;
47 }
48
49 public String toString() {
50 return super.toString() + "[size:" + subscriptions.size() + "]";
51 }
52
53 public Subscription getSubscription(String consumerId) {
54 return (Subscription) subscriptions.get(consumerId);
55 }
56
57 public void addSubscription(String consumerId, Subscription subscription) {
58 }
59
60 public Subscription removeSubscription(String consumerId) {
61 return (Subscription) subscriptions.remove(consumerId);
62 }
63
64 public Iterator subscriptionIterator() {
65 return subscriptions.values().iterator();
66 }
67
68 public Subscription makeSubscription(Dispatcher dispatcher, ConsumerInfo info, Filter filter) {
69 Subscription subscription = createSubscription(dispatcher, info, filter);
70 subscriptions.put(info.getConsumerId(), subscription);
71 return subscription;
72 }
73
74 public void checkForDuplicateDurableSubscription(BrokerClient client, ConsumerInfo info) throws JMSException {
75 for (Iterator iter = subscriptions.values().iterator(); iter.hasNext();) {
76 Subscription subscription = (Subscription) iter.next();
77 if (subscription.isSameDurableSubscription(info)) {
78 throw new DuplicateDurableSubscriptionException(info);
79 }
80 }
81 }
82
83 protected Subscription createSubscription(Dispatcher dispatcher, ConsumerInfo info, Filter filter) {
84 return new SubscriptionImpl(dispatcher, info, filter);
85 }
86 }