org.axonframework.eventhandling.scheduling.java
Class SimpleEventScheduler

java.lang.Object
  org.axonframework.eventhandling.scheduling.java.SimpleEventScheduler

All Implemented Interfaces:

EventScheduler

public class SimpleEventScheduler
extends Object
implements EventScheduler

An EventScheduler implementation that uses Java's ScheduledExecutorService as scheduling and triggering mechanism.

Note that this mechanism is non-persistent. Scheduled tasks will be lost when the JVM is shut down, unless special measures have been taken to prevent that. For more flexible and powerful scheduling options, see QuartzEventScheduler.

Since:

0.7

Author:

Allard Buijze

See Also:

QuartzEventScheduler

Constructor Summary

SimpleEventScheduler(ScheduledExecutorService executorService, EventBus eventBus)
Initialize the SimpleEventScheduler using the given executorService as trigger and execution mechanism, and publishes events to the given eventBus.

Method Summary

void	cancelSchedule(ScheduleToken scheduleToken) Cancel the publication of a scheduled event.
ScheduleToken	schedule(org.joda.time.DateTime triggerDateTime, ApplicationEvent event) Schedule the given event for publication at the given triggerDateTime.
ScheduleToken	schedule(org.joda.time.Duration triggerDuration, ApplicationEvent event) Schedule the given event for publication after the given triggerDuration.
ScheduleToken	schedule(ScheduledEvent event) Schedules the given event for publication.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SimpleEventScheduler

public SimpleEventScheduler(ScheduledExecutorService executorService,
                            EventBus eventBus)

Initialize the SimpleEventScheduler using the given executorService as trigger and execution mechanism, and publishes events to the given eventBus.

Parameters:

executorService - The backing ScheduledExecutorService

eventBus - The Event Bus on which Events are to be published

Method Detail

schedule

public ScheduleToken schedule(org.joda.time.DateTime triggerDateTime,
                              ApplicationEvent event)

Description copied from interface: EventScheduler

Schedule the given event for publication at the given triggerDateTime. The returned ScheduleToken can be used to cancel the planned publication.

Specified by:

schedule in interface EventScheduler

Parameters:

triggerDateTime - The moment to trigger publication of the event

event - The event to publish

Returns:

the token to use when cancelling the schedule

schedule

public ScheduleToken schedule(org.joda.time.Duration triggerDuration,
                              ApplicationEvent event)

Description copied from interface: EventScheduler

Schedule the given event for publication after the given triggerDuration. The returned ScheduleToken can be used to cancel the planned publication.

Specified by:

schedule in interface EventScheduler

Parameters:

triggerDuration - The amount of time to wait before publishing the event

event - The event to publish

Returns:

the token to use when cancelling the schedule

schedule

public ScheduleToken schedule(ScheduledEvent event)

Description copied from interface: EventScheduler

Schedules the given event for publication. The event contains the time at which it should be published. The returned ScheduleToken can be used to cancel the planned publication.

Specified by:

schedule in interface EventScheduler

Parameters:

event - The event to publish

Returns:

the token to use when cancelling the schedule

cancelSchedule

public void cancelSchedule(ScheduleToken scheduleToken)

Description copied from interface: EventScheduler

Cancel the publication of a scheduled event. If the events has already been published, this method does nothing.

Specified by:

cancelSchedule in interface EventScheduler

Parameters:

scheduleToken - the token returned when the event was scheduled