org.terracotta.statistics.extended
Class ExpiringSampledStatistic<T extends Number>

java.lang.Object
  org.terracotta.statistics.extended.SemiExpiringSampledStatistic<T>
      org.terracotta.statistics.extended.ExpiringSampledStatistic<T>

Type Parameters:

T - statistic type

All Implemented Interfaces:

SampledStatistic<T>, SamplingSupport

public class ExpiringSampledStatistic<T extends Number>
extends SemiExpiringSampledStatistic<T>

Statistic that stops sampling history when the last access is after a user supplied timestamp.

Author:

Chris Dennis

Constructor Summary

ExpiringSampledStatistic(ValueStatistic<T> source, ScheduledExecutorService executor, int historySize, long historyPeriod, TimeUnit historyTimeUnit)
Creates an expiring statistic.

Method Summary

T	value() Value.

Methods inherited from class org.terracotta.statistics.extended.SemiExpiringSampledStatistic

active, expire, history, setAlwaysOn, start, startStatistic, stopStatistic, touch

Methods inherited from class java.lang.Object

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

Constructor Detail

ExpiringSampledStatistic

public ExpiringSampledStatistic(ValueStatistic<T> source,
                                ScheduledExecutorService executor,
                                int historySize,
                                long historyPeriod,
                                TimeUnit historyTimeUnit)

Creates an expiring statistic.

Parameters:

source - statistic source

executor - executor to use for sampling

historySize - size of sample history

historyPeriod - period between samples

Method Detail

value

public T value()

Value.

Specified by:

value in interface SampledStatistic<T extends Number>

Returns:

the t