/*
* ResponseCollectorDAO.java
*
* Created on 28 June 2008, 01:28
*
* AsItHappens - real-time network monitor
* Copyright (C) 2006 Mark Abrahams
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
package nz.co.abrahams.asithappens.response;
import nz.co.abrahams.asithappens.storage.DeviceDAO;
import nz.co.abrahams.asithappens.storage.Device;
import nz.co.abrahams.asithappens.*;
import nz.co.abrahams.asithappens.collectors.DataCollectorDAO;
import nz.co.abrahams.asithappens.collectors.DataCollector;
import nz.co.abrahams.asithappens.core.DAOFactory;
import nz.co.abrahams.asithappens.snmputil.SNMPException;
import nz.co.abrahams.asithappens.core.DBUtil;
import nz.co.abrahams.asithappens.core.DBException;
import java.sql.Connection;
import java.sql.Statement;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.net.UnknownHostException;
import org.apache.log4j.Logger;
/**
*
* @author mark
*/
public class ResponseCollectorDAO implements DataCollectorDAO {
/** Collector creation SQL statement */
public static final String CREATE = "INSERT INTO ResponseCollectors (sessionID, device, pollInterval) VALUES (?,?,?)";
/** Device retrieval SQL statement */
public static final String RETRIEVE_DEVICE = "SELECT device FROM ResponseCollectors WHERE sessionID = ?";
/** Polling interval retrieval SQL statement */
public static final String RETRIEVE_POLLINTERVAL = "SELECT pollInterval FROM ResponseCollectors WHERE sessionID = ?";
/** Logging provider */
public static Logger logger = Logger.getLogger(ResponseCollectorDAO.class);
/** Database connection */
Connection connection;
/** Creates a new ResponseCollector DAO */
public ResponseCollectorDAO(Connection connection) {
this.connection = connection;
}
/**
* Creates a ResponseCollector in the database.
*
* @param sessionID the session ID that the collector belongs to
* @param dataCollector the collector to create in the database
*/
public void create(int sessionID, DataCollector dataCollector) throws DBException {
ResponseCollector collector;
PreparedStatement statement;
int deviceID;
collector = (ResponseCollector)dataCollector;
try {
statement = connection.prepareStatement(CREATE);
statement.setInt(1, sessionID);
statement.setString(2, collector.getDevice().getName());
statement.setLong(3, collector.getPollInterval());
statement.execute();
statement.close();
} catch (SQLException e) {
logger.error("Problem creating BandwidthCollector in database for session " + sessionID);
throw new DBException("Problem creating BandwidthCollector in database for session " + sessionID, e);
}
}
/**
* Retrieves a ResponseCollector defintion from the database.
*
* @param sessionID the session ID of the collector
* @return the collector created from the database definition
*/
public ResponseCollector retrieve(int sessionID) throws DBException, UnknownHostException, SNMPException {
DeviceDAO deviceDAO;
String name;
Device device;
long pollInterval;
name = (String)(DBUtil.retrieveSingleAttributeWithPK(connection, RETRIEVE_DEVICE, sessionID));
deviceDAO = DAOFactory.getDeviceDAO();
device = deviceDAO.retrieveDevice(name, false);
deviceDAO.closeConnection();
pollInterval = ((Long)(DBUtil.retrieveSingleAttributeWithPK(connection, RETRIEVE_POLLINTERVAL, sessionID))).longValue();
return new ResponseCollector(device, pollInterval);
}
/**
* Closes database connection opened for this DAO.
*/
public void closeConnection() throws DBException {
try {
connection.close();
} catch (SQLException e) {
logger.error("Error closing database connection for ResponseCollector DAO");
throw new DBException("Error closing database connection for ResponseCollector DAO", e);
}
}
}