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/*
* This file is part of PetaScope.
*
* PetaScope is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* PetaScope 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with PetaScope. If not, see <http://www.gnu.org/licenses/>.
*
* For more information please see <http://www.PetaScope.org>
* or contact Peter Baumann via <baumann@rasdaman.com>.
*
* Copyright 2009 Jacobs University Bremen, Peter Baumann.
*/
package wcst.server;
//~--- JDK imports ------------------------------------------------------------
import java.io.FileInputStream;
import java.io.IOException;
import java.util.Properties;
/**
* Configuration Manager class: a single entry point for all server settings.
* Implements the singleton design pattern.
*
* @author Andrei Aiordachioaie
*/
public class ConfigManager
{
/* Settings variables */
public static String LANGUAGE;
public static boolean PRINT_LOG;
public static String SERVLET_INFO;
public static String VERSION;
/* Singleton instance */
private static ConfigManager instance;
private static Properties props;
/**
* Private constructor. Use <i>getInstance()</i>.
*
* @param settingsPath Path to the settings properties file
*/
private ConfigManager(String settingsPath)
{
props = new Properties();
try
{
props.load(new FileInputStream(settingsPath));
initSettings();
}
catch (IOException e)
{
e.printStackTrace();
}
}
/**
* Returns the instance of the ConfigManager. If no such instance exists,
* it creates one with the specified settings file.
*
* @param settingsPath Path to the settings file
* @return instance of the ConfigManager class
*/
public static ConfigManager getInstance(String settingsPath)
{
if ( instance == null )
instance = new ConfigManager(settingsPath);
return instance;
}
/**
* Return a setting value from the settings file
*
* @param key Key of the setting
* @return String value, or the empty string in case the key does not exist
*/
private String get(String key)
{
String result = "";
if ( props.containsKey(key) )
result = props.getProperty(key);
return result;
}
private void initSettings()
{
LANGUAGE = get("WCST_LANGUAGE");
VERSION = get("WCST_VERSION");
PRINT_LOG = Boolean.parseBoolean(get("PRINT_LOG"));
SERVLET_INFO = get("SERVLET_INFO");
}
}
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