/*
 * Projrct F-11 - Web SCADA for Java
 * Copyright (C) 2002 Freedom, Inc. All Rights Reserved.
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
package org.F11.scada;

import java.net.URL;

import org.apache.log4j.Logger;

/**
 * @author Hideaki Maekawa <frdm@user.sourceforge.jp>
 */
public class EnvironmentManagerStrategyFactory {
    private static Logger logger = Logger.getLogger(EnvironmentManagerStrategyFactory.class);

    public EnvironmentManagerStrategy getEnvironmentManagerStrategy() {
		URL url = getClass().getResource(EnvironmentManagerXML.DEFAULT_FILE);
		if (url != null) {
		    logger.info("EnvironmentManagerXML in use");
		    return new EnvironmentManagerXML();
		} else {
		    url = getClass().getResource(EnvironmentManagerProperty.DEFAULT_FILE);
			if (url != null) {
			    logger.info("EnvironmentManagerProperty in use");
			    return new EnvironmentManagerProperty();
			} else {
			    throw new IllegalStateException("Server property file not found.");
			}
		}
    }
}
