com.espertech.esper.pattern.guard

Class TimerWithinGuard

java.lang.Object

com.espertech.esper.pattern.guard.TimerWithinGuard

All Implemented Interfaces:

Guard, ScheduleHandleCallback

public class TimerWithinGuard
extends Object
implements Guard, ScheduleHandleCallback

Guard implementation that keeps a timer instance and quits when the timer expired, letting all MatchedEventMap instances pass until then.

Constructor Summary

Constructors

Constructor and Description
TimerWithinGuard(long delta, Quitable quitable) Ctor.

Method Summary

Modifier and Type	Method and Description
void	accept(EventGuardVisitor visitor)
boolean	inspect(MatchedEventMap matchEvent) Returns true if inspection shows that the match events can pass, or false to not pass.
void	scheduledTrigger(EngineLevelExtensionServicesContext engineLevelExtensionServicesContext) Callback that is invoked as indicated by a schedule added to the scheduling service.
void	startGuard() Start the guard operation.
void	stopGuard() Called when sub-expression quits, or when the pattern stopped.

Methods inherited from class java.lang.Object

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

Constructor Detail

TimerWithinGuard

public TimerWithinGuard(long delta,
                        Quitable quitable)

Ctor.

Parameters:

delta - - number of millisecond to guard expiration

quitable - - to use to indicate that the gaurd quitted

Method Detail

startGuard

public void startGuard()

Description copied from interface: Guard

Start the guard operation.

Specified by:

startGuard in interface Guard

stopGuard

public void stopGuard()

Description copied from interface: Guard

Called when sub-expression quits, or when the pattern stopped.

Specified by:

stopGuard in interface Guard

inspect

public boolean inspect(MatchedEventMap matchEvent)

Description copied from interface: Guard

Returns true if inspection shows that the match events can pass, or false to not pass.

Specified by:

inspect in interface Guard

Parameters:

matchEvent - is the map of matching events

Returns:

true to pass, false to not pass

scheduledTrigger

public final void scheduledTrigger(EngineLevelExtensionServicesContext engineLevelExtensionServicesContext)

Description copied from interface: ScheduleHandleCallback

Callback that is invoked as indicated by a schedule added to the scheduling service.

Specified by:

scheduledTrigger in interface ScheduleHandleCallback

Parameters:

engineLevelExtensionServicesContext - is a marker interface for providing custom extension services passed to the triggered class

accept

public void accept(EventGuardVisitor visitor)

Specified by:

accept in interface Guard