org.cache2k.core

Class RandomEviction

java.lang.Object

org.cache2k.core.AbstractEviction

org.cache2k.core.RandomEviction

All Implemented Interfaces:

Eviction, EvictionMetrics

public class RandomEviction
extends AbstractEviction

Author:

Jens Wilke

Field Summary

Fields inherited from class org.cache2k.core.AbstractEviction

correctedMaxSize, heapCache, MAXIMAL_CHUNK_SIZE, maxSize, MINIMAL_CHUNK_SIZE, MINIMUM_CAPACITY_FOR_CHUNKING

Constructor Summary

Constructors

Constructor and Description
RandomEviction(HeapCache _heapCache, HeapCacheListener _listener, long _maxSize)

Method Summary

Modifier and Type	Method and Description
void	checkIntegrity(IntegrityState _integrityState)
protected Entry	findEvictionCandidate(Entry _previous) Find a candidate for eviction.
String	getExtraStatistics() Fragment that the eviction wants to add to the Cache.toString() output.
long	getHitCount() Number of recorded hits.
long	getSize() Number of entries in the eviction data structure
protected void	insertIntoReplacementList(Entry e)
long	removeAll() Remove all entries from the eviction data structure.
protected void	removeFromReplacementList(Entry e)

Methods inherited from class org.cache2k.core.AbstractEviction

close, drain, evictEventually, evictEventually, getEvictedCount, getEvictionRunningCount, getExpiredRemovedCount, getMaxSize, getMetrics, getNewEntryCount, getRemovedCount, getVirginRemovedCount, removeFromReplacementListOnEvict, runLocked, start, stop, submitWithoutEviction

Methods inherited from class java.lang.Object

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

Constructor Detail

RandomEviction

public RandomEviction(HeapCache _heapCache,
                      HeapCacheListener _listener,
                      long _maxSize)

Method Detail

removeFromReplacementList

protected void removeFromReplacementList(Entry e)

Specified by:

removeFromReplacementList in class AbstractEviction

insertIntoReplacementList

protected void insertIntoReplacementList(Entry e)

Specified by:

insertIntoReplacementList in class AbstractEviction

findEvictionCandidate

protected Entry findEvictionCandidate(Entry _previous)

Description copied from class: AbstractEviction

Find a candidate for eviction. The caller needs to provide the previous eviction candidate if this method is called multiple times until a fit is found.

Specified by:

findEvictionCandidate in class AbstractEviction

Parameters:

_previous - null or previous found eviction candidate returned by this method. This is currently not used by the implemented eviction methods but might be in the future.

checkIntegrity

public void checkIntegrity(IntegrityState _integrityState)

removeAll

public long removeAll()

Description copied from interface: Eviction

Remove all entries from the eviction data structure.

Returns:

entry count

getExtraStatistics

public String getExtraStatistics()

Description copied from interface: EvictionMetrics

Fragment that the eviction wants to add to the Cache.toString() output.

Specified by:

getExtraStatistics in interface EvictionMetrics

Overrides:

getExtraStatistics in class AbstractEviction

getHitCount

public long getHitCount()

Description copied from interface: EvictionMetrics

Number of recorded hits.

getSize

public long getSize()

Description copied from interface: EvictionMetrics

Number of entries in the eviction data structure