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

Class CronSchedule

java.lang.Object

org.apache.tapestry5.ioc.services.cron.CronSchedule

All Implemented Interfaces:

Schedule

public class CronSchedule
extends java.lang.Object
implements Schedule

Constructor Summary

Constructors

Constructor	Description
CronSchedule(java.lang.String cronExpression)
CronSchedule(java.lang.String cronExpression, java.util.TimeZone timeZone)

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

CronSchedule

public CronSchedule(java.lang.String cronExpression)

CronSchedule

public CronSchedule(java.lang.String cronExpression,
                    java.util.TimeZone timeZone)

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