Glassfish example source code file (Timer.java)

This example Glassfish source code file (Timer.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Glassfish tags/keywords

date, date, io, scheduleexpression, scheduleexpression, serializable, serializable, timer, timer, timerhandle, util

The Glassfish Timer.java source code

/*
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 *
 * Copyright (c) 2006-2010 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
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 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
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 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */

package javax.ejb;

import java.io.Serializable;
import java.util.Date;

/**
 *
 * The <code>Timer interface contains information about a timer
 * that was created through the EJB Timer Service.
 *
 * @since EJB 2.1
 */
public interface Timer {

    /**
     * Cause the timer and all its associated expiration notifications to
     * be cancelled.
     *
     *
     * @exception java.lang.IllegalStateException If this method is
     * invoked while the instance is in a state that does not allow access 
     * to this method.
     * 
     * @exception javax.ejb.NoSuchObjectLocalException If invoked on a timer
     * that has expired or has been cancelled.
     * 
     * @exception javax.ejb.EJBException If this method could not complete due
     * to a system-level failure.
     */
    public void cancel() throws java.lang.IllegalStateException, javax.ejb.NoSuchObjectLocalException, javax.ejb.EJBException;
    
    /**
     * Get the number of milliseconds that will elapse before the next
     * scheduled timer expiration. 
     *
     * @return the number of milliseconds that will elapse before the next
     * scheduled timer expiration.
     *
     * @exception java.lang.IllegalStateException If this method is
     * invoked while the instance is in a state that does not allow access 
     * to this method.
     * 
     * @exception javax.ejb.NoSuchObjectLocalException If invoked on a timer
     * that has expired or has been cancelled.
     *
     * @exception javax.ejb.NoMoreTimeoutsExceptions Indicates that the 
     * timer has no future timeouts
     * 
     * @exception javax.ejb.EJBException If this method could not complete due
     * to a system-level failure.
     */
    public long getTimeRemaining() throws java.lang.IllegalStateException, javax.ejb.NoSuchObjectLocalException, javax.ejb.NoMoreTimeoutsException, javax.ejb.EJBException;

    /**
     * Get the point in time at which the next timer expiration is scheduled 
     * to occur.
     *
     * @return the point in time at which the next timer expiration is 
     * scheduled to occur.
     *
     * @exception java.lang.IllegalStateException If this method is
     * invoked while the instance is in a state that does not allow access 
     * to this method.
     * 
     * @exception javax.ejb.NoSuchObjectLocalException If invoked on a timer
     * that has expired or has been cancelled.
     * 
     * @exception javax.ejb.NoMoreTimeoutsExceptions Indicates that the 
     * timer has no future timeouts
     *
     * @exception javax.ejb.EJBException If this method could not complete due
     * to a system-level failure.
     */
    public Date getNextTimeout() throws java.lang.IllegalStateException, javax.ejb.NoSuchObjectLocalException, javax.ejb.NoMoreTimeoutsException, javax.ejb.EJBException;

    /**
     * Get the schedule expression corresponding to this timer.  The timer
     * must be a calendar-based timer.  It may have been created automatically
     * or programmatically.
     *
     * @return schedule expression for the timer.
     *
     * @exception java.lang.IllegalStateException If this method is
     * invoked while the instance is in a state that does not allow access 
     * to this method.  Also thrown if invoked on a timer that is not a
     * calendar-based timer.
     * 
     * @exception javax.ejb.NoSuchObjectLocalException If invoked on a timer
     * that has expired or has been cancelled.
     * 
     * @exception javax.ejb.EJBException If this method could not complete due
     * to a system-level failure.
     *
     * @since EJB 3.1
     */
    public ScheduleExpression getSchedule() throws java.lang.IllegalStateException, javax.ejb.NoSuchObjectLocalException, javax.ejb.EJBException;

    /**
     * Return whether this timer has persistent semantics.
     *
     * @return boolean indicating whether the timer is persistent.

     * @exception java.lang.IllegalStateException If this method is
     * invoked while the instance is in a state that does not allow access 
     * to this method. 
     * 
     * @exception javax.ejb.NoSuchObjectLocalException If invoked on a timer
     * that has expired or has been cancelled.
     * 
     * @exception javax.ejb.EJBException If this method could not complete due
     * to a system-level failure.
     *
     * @since EJB 3.1
     */
    public boolean isPersistent() throws java.lang.IllegalStateException, javax.ejb.NoSuchObjectLocalException, javax.ejb.EJBException;    

    /**
     * Return whether this timer is a calendar-based timer.  
     *
     * @return boolean indicating whether the timer is calendar-based.
     *
     * @exception java.lang.IllegalStateException If this method is
     * invoked while the instance is in a state that does not allow access 
     * to this method. 
     *
     * @exception javax.ejb.NoSuchObjectLocalException If invoked on a timer
     * that has expired or has been cancelled.
     * 
     * @exception javax.ejb.EJBException If this method could not complete due
     * to a system-level failure.
     *
     * @since EJB 3.1
     */
    public boolean isCalendarTimer() throws java.lang.IllegalStateException, javax.ejb.NoSuchObjectLocalException, javax.ejb.EJBException;    


    /**
     * Get the information associated with the timer at the time of
     * creation.  This may be the <code>info string that was
     * passed to the timer creation method or the <code>info
     * element of the <code>Schedule annotaiton.
     *
     * @return The Serializable object that was passed in at timer creation, or
     * null if the info argument passed in at timer creation was null.
     *
     * @exception java.lang.IllegalStateException If this method is
     * invoked while the instance is in a state that does not allow access 
     * to this method.
     * 
     * @exception javax.ejb.NoSuchObjectLocalException If invoked on a timer
     * that has expired or has been cancelled.
     * 
     * @exception javax.ejb.EJBException If this method could not complete due
     * to a system-level failure.
     */
    public Serializable getInfo() throws java.lang.IllegalStateException, javax.ejb.NoSuchObjectLocalException, javax.ejb.EJBException;


    /**
     * Get a serializable handle to the timer.  This handle can
     * be used at a later time to re-obtain the timer reference.
     *
     * @return a serializable handle to the timer.
     * 
     * @exception java.lang.IllegalStateException If this method is
     * invoked while the instance is in a state that does not allow access 
     * to this method.  Also thrown if invoked on a non-persistent timer.
     * 
     * @exception javax.ejb.NoSuchObjectLocalException If invoked on a timer
     * that has expired or has been cancelled.
     * 
     * @exception javax.ejb.EJBException If this method could not complete due
     * to a system-level failure.
     */
    public TimerHandle getHandle() throws java.lang.IllegalStateException, javax.ejb.NoSuchObjectLocalException, javax.ejb.EJBException;



}