com.hfg.util.scheduler

Class CronSchedule

java.lang.Object

com.hfg.util.scheduler.CronSchedule

All Implemented Interfaces:

Schedule

public class CronSchedule
extends Object
implements Schedule

Scheduler that uses the same specification syntax as the Unix cron utility. See Wikipedia. The text-based specification has five fields:

 * * * *  command to execute
  | | | | |
  | | | | |
  | | | | +------ day of week (0 - 6) (0 to 6 are Sunday to Saturday, or use names; 7 is Sunday, the same as 0)
  | | | +----------- month (1 - 12)
  | | +---------------- day of month (1 - 31)
  | +--------------------- hour (0 - 23)
  +-------------------------- min (0 - 59)
 

Constructor Summary

Constructors

Constructor and Description
CronSchedule(String inCronString)

Method Summary

Modifier and Type	Method and Description
Date	next() Returns the next scheduled instance.
Date	nextAfter(Date inReferenceDate) Returns the first scheduled instance that comes after the specified reference date.
CronSchedule	setDayOfMonthSpec(String inDayOfMonthSpec)
CronSchedule	setDayOfWeekSpec(String inDayOfWeekSpec)
CronSchedule	setHourSpec(String inHourSpec)
CronSchedule	setMinuteSpec(String inMinuteSpec)
CronSchedule	setMonthSpec(String inMonthSpec)

Methods inherited from class java.lang.Object

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

Constructor Detail

CronSchedule

public CronSchedule(String inCronString)

Method Detail

next

public Date next()

Description copied from interface: Schedule

Returns the next scheduled instance.

Specified by:

next in interface Schedule

Returns:

the next scheduled instance relative to the current date

nextAfter

public Date nextAfter(Date inReferenceDate)

Description copied from interface: Schedule

Returns the first scheduled instance that comes after the specified reference date.

Specified by:

nextAfter in interface Schedule

Parameters:

inReferenceDate - the date from which the next scheduled time will be calculated

Returns:

the first scheduled instance that comes after the specified date

setMinuteSpec

public CronSchedule setMinuteSpec(String inMinuteSpec)

setHourSpec

public CronSchedule setHourSpec(String inHourSpec)

setDayOfMonthSpec

public CronSchedule setDayOfMonthSpec(String inDayOfMonthSpec)

setMonthSpec

public CronSchedule setMonthSpec(String inMonthSpec)

setDayOfWeekSpec

public CronSchedule setDayOfWeekSpec(String inDayOfWeekSpec)