jease.cms.web.servlet.JeaseServletListener.java Source code

Introduction

Here is the source code for jease.cms.web.servlet.JeaseServletListener.java

Source

/*
Copyright (C) 2016 maik.jablonski@jease.org
    
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 jease.cms.web.servlet;

import java.util.Locale;

import javax.servlet.ServletContext;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import javax.servlet.annotation.WebListener;

import jease.Names;
import jease.cms.service.Timers;
import jfix.db4o.Database;
import jfix.util.I18N;

import org.apache.commons.lang3.StringUtils;

@WebListener
public class JeaseServletListener implements ServletContextListener {

    public void contextInitialized(ServletContextEvent sce) {
        ServletContext context = sce.getServletContext();
        initSystemProperties(context);
        initLocale(context);
        initDatabase(context);
        initTimer(context);
    }

    public void contextDestroyed(ServletContextEvent sce) {
        stopTimer();
        closeDatabase();
    }

    protected void initSystemProperties(ServletContext context) {
        System.setProperty("networkaddress.cache.ttl", "500");
    }

    protected void initLocale(ServletContext context) {
        String localeCode = context.getInitParameter(Names.JEASE_DEFAULT_LOCALE);
        if (StringUtils.isNotBlank(localeCode)) {
            Locale locale = new Locale(localeCode);
            I18N.load(locale);
            context.setAttribute("org.zkoss.web.preferred.locale", locale);
        }
    }

    protected void initDatabase(ServletContext context) {
        String databaseName = context.getInitParameter(Names.JEASE_DATABASE_NAME);
        if (databaseName != null) {
            Database.open(databaseName);
        } else {
            throw new RuntimeException();
        }
    }

    protected void closeDatabase() {
        Database.close();
    }

    protected void initTimer(ServletContext context) {
        Timers.start();
    }

    protected void stopTimer() {
        Timers.stop();
    }

}