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Java > Open Source Codes > org > objectweb > cjdbc > common > monitor > scheduler > AbstractSchedulerDataCollector


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.scheduler;
25
26 import org.objectweb.cjdbc.common.monitor.AbstractDataCollector;
27 import org.objectweb.cjdbc.controller.core.Controller;
28 import org.objectweb.cjdbc.controller.scheduler.AbstractScheduler;
29 import org.objectweb.cjdbc.controller.virtualdatabase.VirtualDatabase;
30
31 /**
32  * Abstract class to factor code for scheduler collectors
33  * @author <a HREF="mailto:Nicolas.Modrzyk@inrialpes.fr">Nicolas Modrzyk</a>
34  */
35 public abstract class AbstractSchedulerDataCollector
36     extends
37       AbstractDataCollector
38 {
39   private String JavaDoc virtualDatabaseName;
40
41   /**
42    * create a new collector
43    *
44    * @param virtualDatabaseName database accessed to get data
45    */
46   public AbstractSchedulerDataCollector(String JavaDoc virtualDatabaseName)
47   {
48     super();
49     this.virtualDatabaseName = virtualDatabaseName;
50   }
51
52   /**
53    * @see org.objectweb.cjdbc.common.monitor.AbstractDataCollector#collectValue()
54    */
55   public long collectValue()
56   {
57     VirtualDatabase vdb = ((Controller)controller).getVirtualDatabase(
58         virtualDatabaseName);
59     AbstractScheduler scheduler = vdb.getRequestManager().getScheduler();
60     return this.getValue(scheduler);
61   }
62
63   /**
64    * Get information on the scheduler retrieved by <code>collectValue()</code>
65    *
66    * @param scheduler to get value from
67    * @return collected value
68    */
69   public abstract long getValue(Object JavaDoc scheduler);
70   
71   
72
73   /**
74    * @see org.objectweb.cjdbc.common.monitor.AbstractDataCollector#getTargetName()
75    */
76   public String JavaDoc getTargetName()
77   {
78     return virtualDatabaseName;
79   }
80 }
81
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