org.jmonit.features
Class Statistics

java.lang.Object
  org.jmonit.features.AbstractFeature<Statistics>
      org.jmonit.features.Statistics

All Implemented Interfaces:

MonitoringEventListener, Visitable, Plugin<Statistics>

public class Statistics
extends AbstractFeature<Statistics>
implements Visitable

Computes some statistics from monitored datas.

Author:

Nicolas De Loof

Field Summary

static Factory<Statistics>

FACTORY

Constructor Summary

Statistics()

Method Summary

void	accept(Visitor visitor) Entry point for an object that accepts visitors.
void	added(long value)
void	clear()
Statistics	getFeature() A feature is identified by the class it exposes to the monitored application.
long	getHits()
long	getMax()
double	getMean()
long	getMin()
double	getStandardDeviation() Compute the standard deviation (measures the dispersion of values around the average value) = sqrt( variance )
long	getTotal()
double	getVariance() Computes the http://en.wikipedia.org/wiki/Algorithms_for_calculating_variance unbiased variance.
void	onMonitoringEvent(MonitoringEvent event) A monitoring event occured and has been dispatched on the bus
java.lang.String	toString()

Methods inherited from class org.jmonit.features.AbstractFeature

fireMonitoringEvent, getFeature, setMonitor, setMonitoringEventBus

Methods inherited from class java.lang.Object

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

Field Detail

FACTORY

public static final Factory<Statistics> FACTORY

Constructor Detail

Statistics

public Statistics()

Method Detail

onMonitoringEvent

public void onMonitoringEvent(MonitoringEvent event)

A monitoring event occured and has been dispatched on the bus

Specified by:

onMonitoringEvent in interface MonitoringEventListener

See Also:

MonitoringEventListener.onMonitoringEvent(org.jmonit.events.MonitoringEvent)

added

public void added(long value)

getHits

public long getHits()

Returns:

the hits

getMax

public long getMax()

Returns:

the max

getMean

public double getMean()

getMin

public long getMin()

Returns:

the min

getStandardDeviation

public double getStandardDeviation()

Compute the standard deviation (measures the dispersion of values around the average value) = sqrt( variance )

Returns:

the standard deviation

getTotal

public long getTotal()

Returns:

the total

getVariance

public double getVariance()

Computes the http://en.wikipedia.org/wiki/Algorithms_for_calculating_variance unbiased variance.

Returns:

the variance

clear

public void clear()

getFeature

public Statistics getFeature()

A feature is identified by the class it exposes to the monitored application.

Specified by:

getFeature in interface Plugin<Statistics>

Returns:

the public API of this feature

See Also:

Plugin.getFeature()

accept

public void accept(Visitor visitor)

Entry point for an object that accepts visitors.

Specified by:

accept in interface Visitable

See Also:

Visitable.accept(org.jmonit.reporting.Visitor)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

See Also:

Object.toString()