00001 /** 00002 * C-JDBC: Clustered JDBC. 00003 * Copyright (C) 2002-2004 French National Institute For Research In Computer 00004 * Science And Control (INRIA). 00005 * Contact: c-jdbc@objectweb.org 00006 * 00007 * This library is free software; you can redistribute it and/or modify it 00008 * under the terms of the GNU Lesser General Public License as published by the 00009 * Free Software Foundation; either version 2.1 of the License, or any later 00010 * version. 00011 * 00012 * This library is distributed in the hope that it will be useful, but WITHOUT 00013 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 00014 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License 00015 * for more details. 00016 * 00017 * You should have received a copy of the GNU Lesser General Public License 00018 * along with this library; if not, write to the Free Software Foundation, 00019 * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. 00020 * 00021 * Initial developer(s): Nicolas Modrzyk. 00022 * Contributor(s): 00023 */ 00024 package org.objectweb.cjdbc.common.monitor.virtualdatabase; 00025 00026 import org.objectweb.cjdbc.common.exceptions.DataCollectorException; 00027 import org.objectweb.cjdbc.common.monitor.AbstractDataCollector; 00028 import org.objectweb.cjdbc.controller.core.Controller; 00029 import org.objectweb.cjdbc.controller.virtualdatabase.VirtualDatabase; 00030 00031 /** 00032 * Abstract class for virtual databases collectors 00033 * @author <a href="mailto:Nicolas.Modrzyk@inrialpes.fr">Nicolas Modrzyk</a> 00034 */ 00035 public abstract class AbstractVirtualDatabaseDataCollector 00036 extends 00037 AbstractDataCollector 00038 { 00039 private String virtualDatabaseName; 00040 00041 /** 00042 * abstract collector contructor 00043 * @param virtualDatabaseName to collect data from 00044 */ 00045 public AbstractVirtualDatabaseDataCollector(String virtualDatabaseName) 00046 { 00047 super(); 00048 this.virtualDatabaseName = virtualDatabaseName; 00049 } 00050 00051 /** 00052 * @see org.objectweb.cjdbc.common.monitor.AbstractDataCollector#collectValue() 00053 */ 00054 public long collectValue() throws DataCollectorException 00055 { 00056 VirtualDatabase vdb = ((Controller)controller).getVirtualDatabase( 00057 virtualDatabaseName); 00058 return this.getValue(vdb); 00059 } 00060 00061 /** 00062 * We have the database object so let's get the value we want from ot 00063 * @param database as an object to allow it through RMI, but IS a <code>VirtualDatabase</code> 00064 * @return the collected value 00065 */ 00066 public abstract long getValue(Object database); 00067 00068 /** 00069 * @see org.objectweb.cjdbc.common.monitor.AbstractDataCollector#getTargetName() 00070 */ 00071 public String getTargetName() 00072 { 00073 return virtualDatabaseName; 00074 } 00075 }