128 lines
3.3 KiB
Java
128 lines
3.3 KiB
Java
/*
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* This program is free software: you can redistribute it and/or modify it under
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* the terms of the GNU General Public License as published by the Free Software
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* Foundation, either version 3 of the License, or (at your option) any later
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* version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package com.l2jserver.gameserver.instancemanager;
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import java.sql.Connection;
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import java.sql.PreparedStatement;
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import java.sql.ResultSet;
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import java.util.Map;
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import java.util.logging.Logger;
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import javolution.util.FastMap;
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import com.l2jserver.L2DatabaseFactory;
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public class GlobalVariablesManager
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{
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private static final Logger _log = Logger.getLogger(GlobalVariablesManager.class.getName());
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private static final String LOAD_VAR = "SELECT var,value FROM global_variables";
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private static final String SAVE_VAR = "INSERT INTO global_variables (var,value) VALUES (?,?) ON DUPLICATE KEY UPDATE value=?";
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private final Map<String, String> _variablesMap;
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private GlobalVariablesManager()
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{
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_variablesMap = new FastMap<>();
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loadVars();
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}
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private final void loadVars()
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{
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Connection con = null;
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try
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{
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con = L2DatabaseFactory.getInstance().getConnection();
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PreparedStatement statement = con.prepareStatement(LOAD_VAR);
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ResultSet rset = statement.executeQuery();
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String var, value;
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while (rset.next())
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{
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var = rset.getString(1);
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value = rset.getString(2);
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_variablesMap.put(var, value);
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}
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rset.close();
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statement.close();
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}
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catch (Exception e)
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{
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_log.warning("GlobalVariablesManager: problem while loading variables: " + e);
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}
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finally
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{
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L2DatabaseFactory.close(con);
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}
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}
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public final void saveVars()
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{
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Connection con = null;
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PreparedStatement statement = null;
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try
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{
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con = L2DatabaseFactory.getInstance().getConnection();
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statement = con.prepareStatement(SAVE_VAR);
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for (String var : _variablesMap.keySet())
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{
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statement.setString(1, var);
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statement.setString(2, _variablesMap.get(var));
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statement.setString(3, _variablesMap.get(var));
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statement.execute();
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}
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statement.close();
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_log.info("GlobalVariablesManager: Database updated.");
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}
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catch (Exception e)
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{
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_log.warning("GlobalVariablesManager: problem while saving variables: " + e);
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}
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finally
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{
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L2DatabaseFactory.close(con);
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}
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}
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public void storeVariable(String var, String value)
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{
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_variablesMap.put(var, value);
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}
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public boolean isVariableStored(String var)
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{
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return _variablesMap.containsKey(var);
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}
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public String getStoredVariable(String var)
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{
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return _variablesMap.get(var);
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}
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public static final GlobalVariablesManager getInstance()
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{
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return SingletonHolder._instance;
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}
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@SuppressWarnings("synthetic-access")
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private static class SingletonHolder
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{
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protected static final GlobalVariablesManager _instance = new GlobalVariablesManager();
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}
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} |