KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > objectweb > cjdbc > common > monitor > virtualdatabase > AbstractVirtualDatabaseDataCollector


1 /**
2  * C-JDBC: Clustered JDBC.
3  * Copyright (C) 2002-2004 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.virtualdatabase;
25
26 import org.objectweb.cjdbc.common.exceptions.DataCollectorException;
27 import org.objectweb.cjdbc.common.monitor.AbstractDataCollector;
28 import org.objectweb.cjdbc.controller.core.Controller;
29 import org.objectweb.cjdbc.controller.virtualdatabase.VirtualDatabase;
30
31 /**
32  * Abstract class for virtual databases collectors
33  * @author <a HREF="mailto:Nicolas.Modrzyk@inrialpes.fr">Nicolas Modrzyk</a>
34  */
35 public abstract class AbstractVirtualDatabaseDataCollector
36     extends
37       AbstractDataCollector
38 {
39   private String JavaDoc virtualDatabaseName;
40
41   /**
42    * abstract collector contructor
43    * @param virtualDatabaseName to collect data from
44    */
45   public AbstractVirtualDatabaseDataCollector(String JavaDoc virtualDatabaseName)
46   {
47     super();
48     this.virtualDatabaseName = virtualDatabaseName;
49   }
50
51   /**
52    * @see org.objectweb.cjdbc.common.monitor.AbstractDataCollector#collectValue()
53    */
54   public long collectValue() throws DataCollectorException
55   {
56     VirtualDatabase vdb = ((Controller)controller).getVirtualDatabase(
57         virtualDatabaseName);
58     return this.getValue(vdb);
59   }
60
61   /**
62    * We have the database object so let's get the value we want from ot
63    * @param database as an object to allow it through RMI, but IS a <code>VirtualDatabase</code>
64    * @return the collected value
65    */
66   public abstract long getValue(Object JavaDoc database);
67   
68   /**
69    * @see org.objectweb.cjdbc.common.monitor.AbstractDataCollector#getTargetName()
70    */
71   public String JavaDoc getTargetName()
72   {
73     return virtualDatabaseName;
74   }
75 }
76
Popular Tags