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Java > Open Source Codes > org > continuent > sequoia > common > jmx > monitoring > virtualdatabase > ActiveDatabaseThreadCollector


1 /**
2  * Sequoia: Database clustering technology.
3  * Copyright (C) 2002-2004 French National Institute For Research In Computer
4  * Science And Control (INRIA).
5  * Copyright (C) 2005 AmicoSoft, Inc. dba Emic Networks
6  * Contact: sequoia@continuent.org
7  *
8  * Licensed under the Apache License, Version 2.0 (the "License");
9  * you may not use this file except in compliance with the License.
10  * You may obtain a copy of the License at
11  *
12  * http://www.apache.org/licenses/LICENSE-2.0
13  *
14  * Unless required by applicable law or agreed to in writing, software
15  * distributed under the License is distributed on an "AS IS" BASIS,
16  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17  * See the License for the specific language governing permissions and
18  * limitations under the License.
19  *
20  * Initial developer(s): Nicolas Modrzyk.
21  * Contributor(s):
22  */
23
24 package org.continuent.sequoia.common.jmx.monitoring.virtualdatabase;
25
26 import org.continuent.sequoia.common.i18n.Translate;
27 import org.continuent.sequoia.controller.virtualdatabase.VirtualDatabase;
28
29 /**
30  * Count active threads for a <code>VirtualDatabase</code>
31  *
32  * @author <a HREF="mailto:Nicolas.Modrzyk@inrialpes.fr">Nicolas Modrzyk</a>
33  */
34 public class ActiveDatabaseThreadCollector
35     extends AbstractVirtualDatabaseDataCollector
36 {
37   private static final long serialVersionUID = -5197418723162228403L;
38
39   /**
40    * create collector
41    *
42    * @param virtualDatabaseName to get info from
43    */
44   public ActiveDatabaseThreadCollector(String JavaDoc virtualDatabaseName)
45   {
46     super(virtualDatabaseName);
47   }
48
49   /**
50    * @see org.continuent.sequoia.common.jmx.monitoring.AbstractDataCollector#collectValue()
51    */
52   public long getValue(Object JavaDoc database)
53   {
54     return ((VirtualDatabase) database).getActiveThreads().size();
55   }
56
57   /**
58    * @see org.continuent.sequoia.common.jmx.monitoring.AbstractDataCollector#getDescription()
59    */
60   public String JavaDoc getDescription()
61   {
62     return Translate.get("monitoring.virtualdatabase.active.threads"); //$NON-NLS-1$
63 }
64 }
65
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