KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > objectweb > cjdbc > common > monitor > backend > ActiveTransactionCollector


1 /**
2  * C-JDBC: Clustered JDBC.
3  * Copyright (C) 2002-2005 French National Institute For Research In Computer
4  * Science And Control (INRIA).
5  * Contact: c-jdbc@objectweb.org
6  *
7  * This library is free software; you can redistribute it and/or modify it
8  * under the terms of the GNU Lesser General Public License as published by the
9  * Free Software Foundation; either version 2.1 of the License, or any later
10  * version.
11  *
12  * This library is distributed in the hope that it will be useful, but WITHOUT
13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
15  * for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public License
18  * along with this library; if not, write to the Free Software Foundation,
19  * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
20  *
21  * Initial developer(s): Nicolas Modrzyk.
22  * Contributor(s):
23  */
24 package org.objectweb.cjdbc.common.monitor.backend;
25
26 import org.objectweb.cjdbc.common.i18n.Translate;
27 import org.objectweb.cjdbc.controller.backend.DatabaseBackend;
28
29 /**
30  * Return total of currently active transactions on this backend
31  *
32  * @author <a HREF="mailto:Nicolas.Modrzyk@inrialpes.fr">Nicolas Modrzyk</a>
33  */
34 public class ActiveTransactionCollector extends AbstractBackendDataCollector
35 {
36   private static final long serialVersionUID = -4163697846536844217L;
37
38   /**
39    * @param backendName of the backend to get data from
40    * @param virtualDatabaseName database accessed to get data
41    */
42   public ActiveTransactionCollector(String JavaDoc backendName,
43       String JavaDoc virtualDatabaseName)
44   {
45     super(backendName, virtualDatabaseName);
46   }
47
48   /**
49    * Get total number of active transactions on the given backend.
50    *
51    * @param backend backend
52    * @return total number of active transactions
53    * @see org.objectweb.cjdbc.common.monitor.AbstractDataCollector#collectValue()
54    */
55   public long getValue(Object JavaDoc backend)
56   {
57     return ((DatabaseBackend) backend).getActiveTransactions().size();
58   }
59
60   /**
61    * @see org.objectweb.cjdbc.common.monitor.AbstractDataCollector#getDescription()
62    */
63   public String JavaDoc getDescription()
64   {
65     return Translate.get("monitoring.backend.active.transactions");
66   }
67
68 }
69
Popular Tags