tuwien.auto.calimero.buffer.cache
Class StatisticImpl

java.lang.Object
  tuwien.auto.calimero.buffer.cache.StatisticImpl

All Implemented Interfaces:

Cache.Statistic

public class StatisticImpl
extends java.lang.Object
implements Cache.Statistic

Provide basic Cache information as required by Cache.Statistic.

This statistics implementation is immutable.

See Also:

Cache.Statistic

Constructor Summary

StatisticImpl(long hits, long misses)
Creates an instance and fills it with data.

Method Summary

double	hitRatio() Returns the ratio between found CacheObjects to total requests through Cache.get(Object).
long	hits() Returns the total number of successful requests with Cache.get(Object) for a CacheObject.
long	misses() Returns the total number of CacheObject not found with Cache.get(Object).

Methods inherited from class java.lang.Object

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

Constructor Detail

StatisticImpl

public StatisticImpl(long hits,
                     long misses)

Creates an instance and fills it with data.

Parameters:

hits - cache hit count

misses - cache miss count

Method Detail

hitRatio

public final double hitRatio()

Description copied from interface: Cache.Statistic

Returns the ratio between found CacheObjects to total requests through Cache.get(Object).

This value is obtained through ratio = (hits / (hits + misses)).

Specified by:

hitRatio in interface Cache.Statistic

Returns:

the hit ratio in the range [0,1]

hits

public final long hits()

Description copied from interface: Cache.Statistic

Returns the total number of successful requests with Cache.get(Object) for a CacheObject.

Specified by:

hits in interface Cache.Statistic

Returns:

total hits

misses

public final long misses()

Description copied from interface: Cache.Statistic

Returns the total number of CacheObject not found with Cache.get(Object).

Specified by:

misses in interface Cache.Statistic

Returns:

total misses