net.sf.ehcache.statistics.extended
Class RateImpl<T extends Enum<T>>

java.lang.Object
  net.sf.ehcache.statistics.extended.RateImpl<T>

Type Parameters:

T - the generic type

All Implemented Interfaces:

ExtendedStatistics.Statistic<Double>

public class RateImpl<T extends Enum<T>>
extends Object
implements ExtendedStatistics.Statistic<Double>

The Class RateStatistic.

Author:

cdennis

Constructor Summary

RateImpl(org.terracotta.statistics.SourceStatistic<org.terracotta.statistics.observer.ChainedOperationObserver<T>> source, Set<T> targets, long averageNanos, ScheduledExecutorService executor, int historySize, long historyNanos)
Instantiates a new rate statistic.

Method Summary

boolean	active() Active.
protected boolean	expire(long expiry) Check the statistic for expiry.
List<org.terracotta.statistics.archive.Timestamped<Double>>	history() History.
protected void	setHistory(int historySize, long historyNanos) Set the sample history parameters.
protected void	setWindow(long averageNanos) Sets the window.
protected void	start() Start sampling.
Double	value() Value.

Methods inherited from class java.lang.Object

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

Constructor Detail

RateImpl

public RateImpl(org.terracotta.statistics.SourceStatistic<org.terracotta.statistics.observer.ChainedOperationObserver<T>> source,
                Set<T> targets,
                long averageNanos,
                ScheduledExecutorService executor,
                int historySize,
                long historyNanos)

Instantiates a new rate statistic.

Parameters:

targets - the targets

averageNanos - the average nanos

executor - the executor

historySize - the history size

historyNanos - the history nanos

Method Detail

active

public boolean active()

Description copied from interface: ExtendedStatistics.Statistic

Active.

Specified by:

active in interface ExtendedStatistics.Statistic<Double>

Returns:

true, if successful

value

public Double value()

Description copied from interface: ExtendedStatistics.Statistic

Value.

Specified by:

value in interface ExtendedStatistics.Statistic<Double>

Returns:

the t

history

public List<org.terracotta.statistics.archive.Timestamped<Double>> history()

Description copied from interface: ExtendedStatistics.Statistic

History.

Specified by:

history in interface ExtendedStatistics.Statistic<Double>

Returns:

the list

start

protected void start()

Start sampling.

setWindow

protected void setWindow(long averageNanos)

Sets the window.

Parameters:

averageNanos - the new window

setHistory

protected void setHistory(int historySize,
                          long historyNanos)

Set the sample history parameters.

Parameters:

historySize - history sample size

historyNanos - history sample period

expire

protected boolean expire(long expiry)

Check the statistic for expiry.

Parameters:

expiry - expiry threshold

Returns:

true if expired