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Java > Open Source Codes > org > apache > geronimo > system > jmx > RealMBeanServerReference


1 /**
2  * Licensed to the Apache Software Foundation (ASF) under one or more
3  * contributor license agreements. See the NOTICE file distributed with
4  * this work for additional information regarding copyright ownership.
5  * The ASF licenses this file to You under the Apache License, Version 2.0
6  * (the "License"); you may not use this file except in compliance with
7  * the License. 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 package org.apache.geronimo.system.jmx;
18
19 import java.util.ArrayList JavaDoc;
20 import javax.management.MBeanServer JavaDoc;
21 import javax.management.MBeanServerFactory JavaDoc;
22
23 import org.apache.geronimo.gbean.GBeanInfo;
24 import org.apache.geronimo.gbean.GBeanInfoBuilder;
25
26 /**
27  * Creates a real mbean server of finds an existing one with the specified mbeanServerId
28  * @version $Rev: 476049 $ $Date: 2006-11-16 23:35:17 -0500 (Thu, 16 Nov 2006) $
29  */
30 public class RealMBeanServerReference implements MBeanServerReference {
31     private MBeanServer JavaDoc mbeanServer;
32
33     public RealMBeanServerReference(String JavaDoc mbeanServerId) throws MBeanServerNotFound {
34         ArrayList JavaDoc servers = MBeanServerFactory.findMBeanServer(mbeanServerId);
35         if (servers.size() == 0) {
36             mbeanServer = MBeanServerFactory.createMBeanServer("geronimo");
37         } else if (servers.size() > 1) {
38             throw new MBeanServerNotFound(servers.size() + " MBeanServers were found with the agent id " + mbeanServerId);
39         } else {
40             mbeanServer = (MBeanServer JavaDoc) servers.get(0);
41         }
42     }
43
44     public MBeanServer JavaDoc getMBeanServer() {
45         return mbeanServer;
46     }
47
48     public static final GBeanInfo GBEAN_INFO;
49
50     static {
51         GBeanInfoBuilder infoFactory = GBeanInfoBuilder.createStatic(RealMBeanServerReference.class);
52         infoFactory.addAttribute("mbeanServerId", String JavaDoc.class, true);
53         infoFactory.setConstructor(new String JavaDoc[]{"mbeanServerId"});
54         GBEAN_INFO = infoFactory.getBeanInfo();
55     }
56
57     public static GBeanInfo getGBeanInfo() {
58         return GBEAN_INFO;
59     }
60 }
61
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