Package org.apache.tapestry5.ioc.services.cron

Class IntervalSchedule

java.lang.Object

org.apache.tapestry5.ioc.services.cron.IntervalSchedule

All Implemented Interfaces:

Schedule

public class IntervalSchedule
extends Object
implements Schedule

A very simple schedule, that simply executes the desired job at fixed intervals.

Since:

5.3

Constructor Summary

Constructors

Constructor	Description
IntervalSchedule(long interval)	Interval at which the schedule should execute jobs.

Method Summary

Modifier and Type	Method	Description
long	firstExecution()	For a newly created job, what is the start time for the job.
long	nextExecution(long previousExecution)	Computes the next execution time for a job.

Methods inherited from class java.lang.Object

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

Constructor Detail

IntervalSchedule

public IntervalSchedule(long interval)

Interval at which the schedule should execute jobs. The first execution is delayed from current time by the interval as well.

Parameters:

interval - in milliseconds

Method Detail

firstExecution

public long firstExecution()

Description copied from interface: Schedule

For a newly created job, what is the start time for the job. Often, the current clock time is returned, to start a job as soon as possible.

Specified by:

firstExecution in interface Schedule

Returns:

start time for new job, in system clock millis

nextExecution

public long nextExecution(long previousExecution)

Description copied from interface: Schedule

Computes the next execution time for a job.

Specified by:

nextExecution in interface Schedule

Parameters:

previousExecution - time of previous execution (in system clock millis)

Returns:

time of next execution (in system clock millis) or a value <= 0 to cancel the job's execution