Package net.solarnetwork.central.scheduler

Class SchedulerUtils

java.lang.Object

net.solarnetwork.central.scheduler.SchedulerUtils

public final class SchedulerUtils
extends Object

Utility methods for working with scheduled jobs.

Field Summary

Fields

Modifier and Type	Field	Description
static final Pattern	CRON_PLAIN_SECOND_FIELD_PATTERN	A pattern to match a digit-only second field number value.

Method Summary

Modifier and Type	Method	Description
static final String	extractExecutionScheduleDescription(org.springframework.scheduling.Trigger trigger)	Extract an execution schedule description from a trigger.
static org.springframework.scheduling.Trigger	triggerForExpression(String expression, TimeUnit timeUnit, boolean randomized)	Create a trigger from a schedule expression.

Methods inherited from class java.lang.Object

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

Field Details

CRON_PLAIN_SECOND_FIELD_PATTERN

public static final Pattern CRON_PLAIN_SECOND_FIELD_PATTERN

A pattern to match a digit-only second field number value.

Method Details

triggerForExpression

public static org.springframework.scheduling.Trigger triggerForExpression(String expression,
 TimeUnit timeUnit,
 boolean randomized)

Create a trigger from a schedule expression.

The expression can be either an integer number representing a timeUnit frequency or else a cron expression. If randomize is true then if the cron expression seconds value is a constant value it

Parameters:

expression - the schedule expression

timeUnit - the time unit to use for periodic triggers

randomized - true to randomize the second field of cron triggers

Returns:

the trigger, or null if the expression cannot be parsed into one

Since:

2.0

extractExecutionScheduleDescription

public static final String extractExecutionScheduleDescription(org.springframework.scheduling.Trigger trigger)

Extract an execution schedule description from a trigger.

Parameters:

trigger - the trigger

Returns:

a description of the given trigger