Package org.voltdb.task

Class IntervalIntervalGenerator

java.lang.Object

org.voltdb.task.IntervalIntervalGenerator

All Implemented Interfaces:

Initializable, IntervalGenerator

public final class IntervalIntervalGenerator
extends Object

A IntervalGenerator which tries to execute actions with a fixed amount of time between action start times

Constructor Summary

Constructors

Constructor	Description
IntervalIntervalGenerator()

Method Summary

Modifier and Type	Method	Description
Interval	getFirstInterval()	This method is invoked only once to obtain the first interval.
void	initialize(TaskHelper helper, int interval, String timeUnit)
static String	validateParameters(TaskHelper arg0, int arg1, String arg2)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.voltdb.task.Initializable

getDependencies

Constructor Details

IntervalIntervalGenerator

public IntervalIntervalGenerator()

Method Details

initialize

public void initialize(TaskHelper helper,
 int interval,
 String timeUnit)

getFirstInterval

public Interval getFirstInterval()

Description copied from interface: IntervalGenerator

This method is invoked only once to obtain the first interval. The first action will be performed after this time interval has elapsed. After the action has been performed callback will be invoked with the result of the action. The return of the callback will be used as the next interval.

If this method throws an exception or returns null the task instance will halted and put into an error state.

Returns:

Interval with the time interval until the next action should be performed and callback to invoke

validateParameters

public static String validateParameters(TaskHelper arg0,
 int arg1,
 String arg2)