Package org.voltdb.task

Class CompositeActionScheduler

java.lang.Object

org.voltdb.task.CompositeActionScheduler

All Implemented Interfaces:

ActionScheduler, Initializable

public final class CompositeActionScheduler
extends Object
implements ActionScheduler

Simple ActionScheduler implementation which takes a ActionGenerator and IntervalGenerator and combines the results of those two instances to make a ScheduledAction

Constructor Summary

Constructors

Constructor	Description
CompositeActionScheduler(ActionGenerator actionGenerator, IntervalGenerator intervalGenerator)

Method Summary

Modifier and Type	Method	Description
ScheduledAction	getFirstScheduledAction()	This method is invoked only once to obtain the first action and interval.
boolean	isReadOnly()
boolean	restrictProcedureByScope()

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

CompositeActionScheduler

public CompositeActionScheduler(ActionGenerator actionGenerator,
 IntervalGenerator intervalGenerator)

Method Details

getFirstScheduledAction

public ScheduledAction getFirstScheduledAction()

Description copied from interface: ActionScheduler

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

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

Specified by:

getFirstScheduledAction in interface ActionScheduler

Returns:

ScheduledAction with the action and interval after which the action is performed

restrictProcedureByScope

public boolean restrictProcedureByScope()

isReadOnly

public boolean isReadOnly()