org.webical.settings.ApplicationSettingsFactory.java Source code

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Here is the source code for org.webical.settings.ApplicationSettingsFactory.java

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/*
 *    Webical - http://www.webical.org
 *    Copyright (C) 2007 Func. Internet Integration
 *
 *    This file is part of Webical.
 *
 *    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 3 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, see <http://www.gnu.org/licenses/>.
 */

package org.webical.settings;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.beans.factory.InitializingBean;
import org.webical.ApplicationSettings;
import org.webical.manager.ApplicationSettingsManager;
import org.webical.manager.WebicalException;

/**
 * Factry for easy access to the ApplicationSettings
 * @author ivo
 *
 */
public class ApplicationSettingsFactory implements InitializingBean {
    private static Log log = LogFactory.getLog(ApplicationSettingsFactory.class);

    /** The only instance */
    private static ApplicationSettingsFactory instance;

    /** The applicationSettingsManager is set by Spring */
    private ApplicationSettingsManager applicationSettingsManager;

    /**
     * Protected constructor
     */
    protected ApplicationSettingsFactory() {

    }

    /**
     * @return the singleton instance
     */
    public static ApplicationSettingsFactory getInstance() {
        if (instance == null) {
            log.debug("Creating ApplicationSettingsFactory singleton instance");
            instance = new ApplicationSettingsFactory();
        }
        return instance;
    }

    /**
     * @return the current application settigns
     * @throws WebicalException
     */
    public ApplicationSettings getApplicationSettings() throws ApplicationSettingsException {
        try {
            return applicationSettingsManager.getApplicationSettings();
        } catch (WebicalException e) {
            throw new ApplicationSettingsException(e);
        }
    }

    /**
     * @param applicationSettingsManager the applicationSettingsManager to set
     */
    public void setApplicationSettingsManager(ApplicationSettingsManager applicationSettingsManager) {
        this.applicationSettingsManager = applicationSettingsManager;
    }

    public void afterPropertiesSet() throws Exception {
        if (applicationSettingsManager == null) {
            log.fatal(ApplicationSettingsFactory.class + " needs a " + ApplicationSettingsManager.class);
            throw new ExceptionInInitializerError(
                    ApplicationSettingsFactory.class + " needs a " + ApplicationSettingsManager.class);
        }

        instance = this;
    }

}