rankingworker.java.svn-base

冒险岛私服Java版服务端(Odinms)源代码。学习JAVA开发的朋友

/*
	This file is part of the OdinMS Maple Story Server
    Copyright (C) 2008 Patrick Huy <[e-mail]> 
                       Matthias Butz <[e-mail]>
                       Jan Christian Meyer <[e-mail]>

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License version 3
    as published by the Free Software Foundation. You may not use, modify
    or distribute this program under any other version of the
    GNU Affero General Public License.

    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 Affero General Public License for more details.

    You should have received a copy of the GNU Affero General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

package net.sf.odinms.net.login;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import net.sf.odinms.client.MapleJob;
import net.sf.odinms.database.DatabaseConnection;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 *
 * @author Matze
 * @author Quit
 */
public class RankingWorker implements Runnable {

	private Connection con;
	private long lastUpdate = System.currentTimeMillis();
	private static Logger log = LoggerFactory.getLogger(RankingWorker.class);
	
	public void run() {
		try {
			con = DatabaseConnection.getConnection();
			con.setAutoCommit(false);
			updateRanking(null);
			updateRanking(MapleJob.BEGINNER);
			updateRanking(MapleJob.WARRIOR);
			updateRanking(MapleJob.MAGICIAN);
			updateRanking(MapleJob.BOWMAN);
			updateRanking(MapleJob.THIEF);
			con.commit();
			con.setAutoCommit(true);
			lastUpdate = System.currentTimeMillis();
		} catch (SQLException ex) {
			try {
				con.rollback();
				con.setAutoCommit(true);
				log.warn("Could not update rankings", ex);
			} catch (SQLException ex2) {
				log.error("Could not rollback unfinished ranking transaction", ex2);
			}
		}
	}
	
	private void updateRanking(MapleJob job) throws SQLException {
		String sqlCharSelect = "SELECT c.id, " +
			(job != null ? "c.jobRank, c.jobRankMove" : "c.rank, c.rankMove") + 
			", a.lastlogin AS lastlogin, a.loggedin " +
			"FROM characters AS c " +
			"LEFT JOIN accounts AS a ON c.accountid = a.id " +
			"WHERE c.gm = 0 ";
		if (job != null) {
			sqlCharSelect += "AND c.job DIV 100 = ? ";
		}
		sqlCharSelect += "ORDER BY c.level DESC , c.exp DESC , c.fame DESC , c.meso DESC";
		PreparedStatement charSelect = con.prepareStatement(sqlCharSelect);
		if (job != null) {
			charSelect.setInt(1, job.getId() / 100);
		}
		ResultSet rs = charSelect.executeQuery();
		PreparedStatement ps = con.prepareStatement("UPDATE characters SET " +
			(job != null ? "jobRank = ?, jobRankMove = ? " : "rank = ?, rankMove = ? ") +
			"WHERE id = ?");
		int rank = 0;
		while (rs.next()) {
			int rankMove = 0;
			rank++;
			if (rs.getLong("lastlogin") < lastUpdate ||
				rs.getInt("loggedin") > 0) {
				rankMove = rs.getInt((job != null ? "jobRankMove" : "rankMove"));
			}
			rankMove += rs.getInt((job != null ? "jobRank" : "rank")) - rank;
			ps.setInt(1, rank);
			ps.setInt(2, rankMove);
			ps.setInt(3, rs.getInt("id"));
			ps.executeUpdate();
		}
		rs.close();
		charSelect.close();
		ps.close();
	}

}