net.eduvax.util

Class EventMonitor

java.lang.Object

java.util.TimerTask

net.eduvax.util.EventMonitor

All Implemented Interfaces:

java.lang.Runnable, Observable<EventMonitor>

public class EventMonitor
extends java.util.TimerTask
implements Observable<EventMonitor>

Periodic event monitoring. Periodic check of arrival of events between each timer top. Here an event can be in fact anything. It is not direcly linked to the Event class.

Field Summary

Fields

Modifier and Type	Field and Description
private boolean	_active activity indicator.
private int	_cpt Compteur d'evenement pour la période courante
private ObserverManager<EventMonitor>	_obsManager Observable implementation.
private long	_period periodic check delay
private java.util.Timer	_timer Timer controlling periodic checks.

Constructor Summary

Constructors

Constructor and Description
EventMonitor(long period) Create new monitor

Method Summary

Methods

Modifier and Type	Method and Description
void	dispose() Arrêter l'activité de d'observation et de comptage des événements
ObserverManager<EventMonitor>	getObserverManager() Get this observable observer registration manager.
java.util.Timer	getTimer() Get the timer controlling the periodic checks.
boolean	isActive() monitor status
void	notifyEvent() notify to this monitor that an event occurs
void	run() Update monitor status.
void	start() Start monitoring.

Methods inherited from class java.util.TimerTask

cancel, scheduledExecutionTime

Methods inherited from class java.lang.Object

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

Field Detail

_cpt

private int _cpt

Compteur d'evenement pour la période courante

_active

private boolean _active

activity indicator.

_period

private long _period

periodic check delay

_timer

private java.util.Timer _timer

Timer controlling periodic checks.

_obsManager

private ObserverManager<EventMonitor> _obsManager

Observable implementation.

Constructor Detail

EventMonitor

public EventMonitor(long period)

Create new monitor

Parameters:

period - delay in milliseconds between two consecutive check.

Method Detail

notifyEvent

public void notifyEvent()

notify to this monitor that an event occurs

start

public void start()

Start monitoring.

run

public void run()

Update monitor status. TimerTask implementation. Checks events counter to compute monitor status.

Specified by:

run in interface java.lang.Runnable

Specified by:

run in class java.util.TimerTask

isActive

public boolean isActive()

monitor status

Returns:

- true when at least one notification has been recieved during last period. - false when no notification has been recieved.

getTimer

public java.util.Timer getTimer()

Get the timer controlling the periodic checks.

Returns:

the timer.

dispose

public void dispose()

Arrêter l'activité de d'observation et de comptage des événements

getObserverManager

public ObserverManager<EventMonitor> getObserverManager()

Description copied from interface: Observable

Get this observable observer registration manager.

Specified by:

getObserverManager in interface Observable<EventMonitor>

Returns:

the observer manager.