com.easyjf.cache.store
Class LfuMemoryStore

java.lang.Object
  com.easyjf.cache.store.MemoryStore
      com.easyjf.cache.store.LfuMemoryStore

All Implemented Interfaces:

Store

public class LfuMemoryStore

extends MemoryStore

Least Frequently Used (LFU) implementation of the memory store.

Version:

$Id: LfuMemoryStore.java,v 1.11 2005/10/15 17:32:30 gregluck Exp $ Warning: Testing of this store reveals some problems with it. Do not use. It may be removed.

Author:

Surya Suravarapu

Nested Class Summary

class

LfuMemoryStore.ElementComparator A comparator class compares two elements.

Method Summary

int	compareElements(Element element1, Element element2) Compares its two arguments for order.
void	doPut(Element element) Puts an element into the cache
Element	remove(java.io.Serializable key) Removes an item from the cache.

Methods inherited from class com.easyjf.cache.store.MemoryStore

containsKey, create, dispose, get, getKeyArray, getKeySet, getQuiet, getSize, getSizeInBytes, getStatus, put, remove, removeAll, removeElement

Methods inherited from class java.lang.Object

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

Method Detail

doPut

public void doPut(Element element)

Puts an element into the cache

remove

public Element remove(java.io.Serializable key)

Removes an item from the cache.

compareElements

public int compareElements(Element element1,
                           Element element2)
                    throws java.lang.ClassCastException

Compares its two arguments for order. Returns a negative integer, zero, or a positive integer as the first argument is less than, equal to, or greater than the second.

Parameters:

element1 - the first element to be compared.

element2 - the second element to be compared.

Returns:

a negative integer, zero, or a positive integer as the first argument is less than, equal to, or greater than the second.

Throws:

java.lang.ClassCastException - if the arguments' types prevent them from being compared by this Comparator.