com.hivemq.spi.callback.schedule

Interface ScheduledCallback

All Superinterfaces:

AsynchronousCallback, Callback

public interface ScheduledCallback
extends AsynchronousCallback

This callback gets called periodically based on the value provided in the cronExpression() method.

This callback is especially useful for recurring tasks like maintenance tasks.

Since:

2.0

Author:

Dominik Obermaier

Method Summary

Methods

Modifier and Type	Method and Description
String	cronExpression() This method returns the quartz-like cron expression for the callback.
void	execute() This method gets executed on the given schedules

Method Detail

execute

void execute()

This method gets executed on the given schedules

cronExpression

String cronExpression()

This method returns the quartz-like cron expression for the callback.

Note that this method only gets called once when adding the callback to the CallbackRegistry. If you have dynamic cron expressions in this method, you must manually call the CallbackRegistry.reloadScheduledCallbackExpression(ScheduledCallback) method in order to reload the expression

Returns:

a String which contains the quartz-like cron expressions.

See Also:

Documentation for quartz cron expressions