net.sf.ehcache.store
Class LfuPolicy

java.lang.Object
  net.sf.ehcache.store.AbstractPolicy
      net.sf.ehcache.store.LfuPolicy

All Implemented Interfaces:

Policy

public class LfuPolicy
extends AbstractPolicy

Contains common LFU policy code for use between the LfuMemoryStore and the DiskStore, which also uses an LfuPolicy for evictions.

Version:

$Id: LfuPolicy.java 1214 2009-09-25 00:14:13Z gbevin $

Author:

Greg Luck

Field Summary

static java.lang.String

NAME The name of this policy as a string literal

Constructor Summary

LfuPolicy()

Method Summary

boolean	compare(Element element1, Element element2) Compares the desirableness for eviction of two elements Compares hit counts.
java.lang.String	getName()

Methods inherited from class net.sf.ehcache.store.AbstractPolicy

calculateSampleSize, generateRandomSample, selectedBasedOnPolicy

Methods inherited from class java.lang.Object

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

Field Detail

NAME

public static final java.lang.String NAME

The name of this policy as a string literal

See Also:

Constant Field Values

Constructor Detail

LfuPolicy

public LfuPolicy()

Method Detail

getName

public java.lang.String getName()

Returns:

the name of the Policy. Inbuilt examples are LRU, LFU and FIFO.

compare

public boolean compare(Element element1,
                       Element element2)

Compares the desirableness for eviction of two elements Compares hit counts. If both zero,

Parameters:

element1 - the element to compare against

element2 - the element to compare

Returns:

true if the second element is preferable to the first element for ths policy