org.apache.tapestry5.ioc.services.cron

Interface Schedule

All Known Implementing Classes:

CronSchedule, IntervalSchedule

public interface Schedule

Used with PeriodicExecutor to control the schedule for when jobs execute.

Method Summary

Methods

Modifier and Type	Method and 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.

Method Detail

firstExecution

long firstExecution()

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.

Returns:

start time for new job, in system clock millis

nextExecution

long nextExecution(long previousExecution)

Computes the next execution time for a job.

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