com.inductiveautomation.gateway.tags.history.maintentance

Class DataPruneMaintenanceTask

java.lang.Object

com.inductiveautomation.gateway.tags.history.maintentance.DataPruneMaintenanceTask

All Implemented Interfaces:

SelfSchedulingRunnable, java.lang.Runnable

Direct Known Subclasses:

ParitionDropMaintenanceTask

public abstract class DataPruneMaintenanceTask
extends java.lang.Object
implements SelfSchedulingRunnable

This is a maintenance task that deletes data from tag history after a certain amount of time.

Constructor Summary

Constructors

Constructor and Description
DataPruneMaintenanceTask(GatewayContext context, int age, TimeUnits units)

Method Summary

Modifier and Type	Method and Description
protected abstract void	executeDelete() END SELF-SCHEDULING RUNNABLE CODE
protected long	getAgeMillis() Gets the age to delete in milliseconds.
GatewayContext	getContext()
org.apache.log4j.Logger	getLogger()
long	getNextExecDelayMillis() SELF-SCHEDULING RUNNABLE CODE
void	run()
void	setController(SchedulingController controller) Called by the execution engine, passes in a scheduling controller that the self scheduling runnable can use to request a reschedule.

Methods inherited from class java.lang.Object

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

Constructor Detail

DataPruneMaintenanceTask

public DataPruneMaintenanceTask(GatewayContext context,
                                int age,
                                TimeUnits units)

Method Detail

getAgeMillis

protected long getAgeMillis()

Gets the age to delete in milliseconds.

Returns:

getLogger

public org.apache.log4j.Logger getLogger()

getContext

public GatewayContext getContext()

getNextExecDelayMillis

public long getNextExecDelayMillis()

SELF-SCHEDULING RUNNABLE CODE

Specified by:

getNextExecDelayMillis in interface SelfSchedulingRunnable

Returns:

Time to wait until next exec. 0 indicates that the unit should not be executed, and the engine should just wait for a reschedule request.

setController

public void setController(SchedulingController controller)

Description copied from interface: SelfSchedulingRunnable

Called by the execution engine, passes in a scheduling controller that the self scheduling runnable can use to request a reschedule.

Specified by:

setController in interface SelfSchedulingRunnable

run

public void run()

Specified by:

run in interface java.lang.Runnable

executeDelete

protected abstract void executeDelete()
                               throws java.lang.Exception

END SELF-SCHEDULING RUNNABLE CODE

Throws:

java.lang.Exception