Package org.voltdb.task

Class SingleProcGenerator

java.lang.Object

org.voltdb.task.SingleProcGenerator

All Implemented Interfaces:

ActionGenerator, Initializable

public final class SingleProcGenerator
extends Object
implements ActionGenerator

Simple implementation of a ActionGenerator which always returns the same procedure to run with the same parameters

Constructor Summary

Constructors

Constructor	Description
SingleProcGenerator()

Method Summary

Modifier and Type	Method	Description
Action	getFirstAction()	This method is invoked only once to obtain the first action.
void	initialize(TaskHelper helper, String procedure, Object... procedureParameters)
boolean	isReadOnly()
boolean	restrictProcedureByScope()
static String	validateParameters(TaskHelper helper, String procedure, Object... procedureParameters)

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

SingleProcGenerator

public SingleProcGenerator()

Method Details

validateParameters

public static String validateParameters(TaskHelper helper,
 String procedure,
 Object... procedureParameters)

initialize

public void initialize(TaskHelper helper,
 String procedure,
 Object... procedureParameters)

restrictProcedureByScope

public boolean restrictProcedureByScope()

getFirstAction

public Action getFirstAction()

Description copied from interface: ActionGenerator

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

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

Specified by:

getFirstAction in interface ActionGenerator

Returns:

Action to perform

isReadOnly

public boolean isReadOnly()