org.jcreme.caches
Class FIFOCache

java.lang.Object
  org.jcreme.caches.BaseCache
      org.jcreme.caches.HashCache
          org.jcreme.caches.FIFOCache

All Implemented Interfaces:

Cache

public class FIFOCache

extends HashCache

The FIFO cache is based on a First In First Out algorithm to select the objects that are removed from the cache to make room. This implementation uses a LinkedList.

Version:

$Revision: 1.2 $

Author:

$Author: dbregeon $

Constructor Summary

FIFOCache()
Creates new LIFOCache

FIFOCache(int minSize, int maxSize)
Creates new LIFOCache

Method Summary

void	clear() Removes all the objects from the Cache, leaving it empty.
void	registerObject(java.lang.Object key, java.lang.Object value) This method adds an object in the cache.
protected void	removeOneElement() This method is called when room is needed to add a new object in the cache.
void	unregisterObject(java.lang.Object key) This method removes an object from the cache.

Methods inherited from class org.jcreme.caches.HashCache

getAllObjects, getAllObjects, getMap, getObject, getSize, registerAllObjects

Methods inherited from class org.jcreme.caches.BaseCache

addCacheListener, buildEvent, fireElementAdded, fireElementRemoved, getCacheListeners, getMaxSize, getMinSize, getReplacementPolicy, removeCacheListener, setMaxSize, setReplacementPolicy

Methods inherited from class java.lang.Object

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

Constructor Detail

FIFOCache

public FIFOCache()

Creates new LIFOCache

FIFOCache

public FIFOCache(int minSize,
                 int maxSize)

Creates new LIFOCache

Parameters:

minSize - the initial size of the Cache.

maxSize - the maximum number of objects contained by the cache.

Method Detail

registerObject

public void registerObject(java.lang.Object key,
                           java.lang.Object value)
                    throws CacheFullException

This method adds an object in the cache.

Specified by:

registerObject in interface Cache

Overrides:

registerObject in class HashCache

Parameters:

key - the key that will be used to retrieve the object.

value - the object to store in the cache.

Throws:

CacheFullException - if the object could not be stored in the cache.

unregisterObject

public void unregisterObject(java.lang.Object key)

This method removes an object from the cache.

Specified by:

unregisterObject in interface Cache

Overrides:

unregisterObject in class HashCache

Parameters:

key - the key that was used to store the object in the cache.

clear

public void clear()

Removes all the objects from the Cache, leaving it empty.

Specified by:

clear in interface Cache

Overrides:

clear in class HashCache

removeOneElement

protected void removeOneElement()

This method is called when room is needed to add a new object in the cache.