org.ow2.easybeans.component.quartz.QuartzComponent Maven / Gradle / Ivy

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/**
 * EasyBeans
 * Copyright (C) 2007 Bull S.A.S.
 * Contact: [email protected]
 *
 * This library 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 2.1 of the License, or any later version.
 *
 * This library 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 this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
 * USA
 *
 * --------------------------------------------------------------------------
 * $Id: QuartzComponent.java 1970 2007-10-16 11:49:25Z benoitf $
 * --------------------------------------------------------------------------
 */

package org.ow2.easybeans.component.quartz;

import java.util.List;
import java.util.Properties;

import javax.ejb.TimerService;

import org.ow2.easybeans.api.Factory;
import org.ow2.easybeans.component.api.EZBComponentException;
import org.ow2.easybeans.component.itf.TimerComponent;
import org.ow2.easybeans.component.util.Property;
import org.quartz.Scheduler;
import org.quartz.SchedulerException;
import org.quartz.SchedulerFactory;
import org.quartz.impl.StdSchedulerFactory;

/**
 * This component starts the Quartz framework and configure it.
 * It is also providing the Scheduler that EJB timer will use for their use.
 * @author Florent Benoit
 *
 */
public class QuartzComponent implements TimerComponent {

    /**
     * Quartz scheduler shared by all Timer services.
     */
    private Scheduler scheduler = null;

    /**
     * Properties for the scheduler. These properties should have been set before the init of the scheduler.
     */
    private List quartzProperties= null;


    /**
     * Quartz scheduler Factory.
     */
    private SchedulerFactory schedulerFactory = null;

    /**
     * Init method.

     * This method is called before the start method.
     * @throws EZBComponentException if the initialization has failed.
     */
    public void init() throws EZBComponentException {

        // Get properties
        Properties schedulerProperties = new Properties();
        if (quartzProperties != null) {
            for (Property property : quartzProperties) {
                schedulerProperties.put(property.getName(), property.getValue());
            }
        }


        // Initialize the Quartz scheduler Factory
        schedulerFactory = null;
        try {
            schedulerFactory  = new StdSchedulerFactory(schedulerProperties);
        } catch (SchedulerException e) {
            throw new EZBComponentException("Cannot initialize the Scheduler factory", e);
        }
    }


    /**
     * Start method.

     * This method is called after the init method.
     * @throws EZBComponentException if the start has failed.
     */
    public void start() throws EZBComponentException {



        // Build a Scheduler
        try {
            this.scheduler = schedulerFactory.getScheduler();
        } catch (SchedulerException e) {
            throw new EZBComponentException("Cannot get a scheduler from the factory", e);
        }

        // Start the scheduler
        try {
            scheduler.start();
        } catch (SchedulerException e) {
           throw new EZBComponentException("Cannot start the scheduler", e);
        }
    }


    /**
     * Stop method.

     * This method is called when component needs to be stopped.
     * @throws EZBComponentException if the stop is failing.
     */
    public void stop() throws EZBComponentException {
        // Stop the scheduler
        try {
            scheduler.shutdown();
        } catch (SchedulerException e) {
            throw new EZBComponentException("Cannot stop the scheduler", e);
        }
    }


    /**
     * Gets an EJB timer service through this component.
     * @param factory an EasyBeans factory providing timeout notification.
     * @return an EJB timer service
     */
    public TimerService getTimerService(final Factory factory) {
        return new QuartzTimerService(factory, scheduler);
    }

    /**
     * Gets the list of properties.
     * @return the list of properties.
     */
    public List getProperties() {
        return this.quartzProperties;
    }

    /**
     * Set the list of properties.
     * @param quartzProperties the list of properties.
     */
    public void setProperties(final List quartzProperties) {
        this.quartzProperties = quartzProperties;
    }

    /**
     * Gets the Quartz scheduler.
     * @return the Quartz scheduler.
     */
    public Scheduler getScheduler() {
        return scheduler;
    }


}