Package org.sterl.spring.persistent_tasks.api

Class CronSchedule

java.lang.Object

org.sterl.spring.persistent_tasks.api.CronSchedule

All Implemented Interfaces:

Serializable, Schedule

public final class CronSchedule
extends Object
implements Schedule

A schedule based on a cron expression. Always uses UTC timezone.

Examples:

• "0 0 2 * * *" - Every day at 2:00 AM UTC
• "0 0 * * * *" - Every hour on the hour
• "0 */15 * * * *" - Every 15 minutes

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
CronSchedule(String expression)	Creates a new cron schedule.

Method Summary

Modifier and Type	Method	Description
String	description()	Returns a human-readable description of this schedule.
OffsetDateTime	next(OffsetDateTime from)	Calculates the next execution time from the given time.

Methods inherited from class java.lang.Object

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

Constructor Details

CronSchedule

public CronSchedule(String expression)

Creates a new cron schedule.

Parameters:

expression - the cron expression (6 fields: second minute hour day month weekday)

Throws:

IllegalArgumentException - if the cron expression is invalid

Method Details

next

public OffsetDateTime next(OffsetDateTime from)

Description copied from interface: Schedule

Calculates the next execution time from the given time.

Specified by:

next in interface Schedule

Parameters:

from - the reference time to calculate from

Returns:

the next execution time after the given time

description

public String description()

Description copied from interface: Schedule

Returns a human-readable description of this schedule.

Specified by:

description in interface Schedule

Returns:

description of the schedule