org.apache.jcs.engine.memory.mru
Class MRUMemoryCache

java.lang.Object
  org.apache.jcs.engine.memory.AbstractMemoryCache
      org.apache.jcs.engine.memory.mru.MRUMemoryCache

All Implemented Interfaces:

MemoryCache, java.io.Serializable

public class MRUMemoryCache

extends AbstractMemoryCache

A SLOW AS HELL reference management system. The most recently used items move to the front of the list and get spooled to disk if the cache hub is configured to use a disk cache.

Version:

$Id: MRUMemoryCache.java 375078 2006-02-05 18:48:38Z asmuts $

See Also:

Serialized Form

Field Summary

Fields inherited from class org.apache.jcs.engine.memory.AbstractMemoryCache

attr, cache, cacheName, cattr, chunkSize, map, status

Constructor Summary

MRUMemoryCache()

Method Summary

void	dumpCacheEntries() Dump the cache entries from first to list for debugging.
void	dumpMap() Dump the cache map for debugging.
ICacheElement	get(java.io.Serializable key) Description of the Method
java.lang.Object[]	getKeyArray() Get an Array of the keys for all elements in the memory cache
ICacheElement	getQuiet(java.io.Serializable key) Get an item from the cache without affecting its last access time or position.
IStats	getStatistics() Returns the historical and statistical data for a region's memory cache.
void	initialize(CompositeCache hub) For post reflection creation initialization
boolean	remove(java.io.Serializable key) Removes an item from the cache.
void	update(ICacheElement ce) Puts an item to the cache.

Methods inherited from class org.apache.jcs.engine.memory.AbstractMemoryCache

dispose, getCacheAttributes, getCacheName, getCompositeCache, getGroupKeys, getIterator, getSize, getStatus, removeAll, setCacheAttributes, waterfal

Methods inherited from class java.lang.Object

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

Constructor Detail

MRUMemoryCache

public MRUMemoryCache()

Method Detail

initialize

public void initialize(CompositeCache hub)

For post reflection creation initialization

Specified by:

initialize in interface MemoryCache

Overrides:

initialize in class AbstractMemoryCache

Parameters:

hub -

update

public void update(ICacheElement ce)
            throws java.io.IOException

Puts an item to the cache.

Specified by:

update in interface MemoryCache

Specified by:

update in class AbstractMemoryCache

Parameters:

ce -

Throws:

java.io.IOException

getQuiet

public ICacheElement getQuiet(java.io.Serializable key)
                       throws java.io.IOException

Get an item from the cache without affecting its last access time or position.

Specified by:

getQuiet in interface MemoryCache

Specified by:

getQuiet in class AbstractMemoryCache

Parameters:

key - Identifies item to find

Returns:

Element mathinh key if found, or null

Throws:

java.io.IOException

get

public ICacheElement get(java.io.Serializable key)
                  throws java.io.IOException

Description of the Method

Specified by:

get in interface MemoryCache

Specified by:

get in class AbstractMemoryCache

Parameters:

key -

Returns:

Throws:

java.io.IOException

remove

public boolean remove(java.io.Serializable key)
               throws java.io.IOException

Removes an item from the cache.

Specified by:

remove in interface MemoryCache

Specified by:

remove in class AbstractMemoryCache

Parameters:

key -

Returns:

Throws:

java.io.IOException

getKeyArray

public java.lang.Object[] getKeyArray()

Get an Array of the keys for all elements in the memory cache

Specified by:

getKeyArray in interface MemoryCache

Specified by:

getKeyArray in class AbstractMemoryCache

Returns:

Object[]

dumpMap

public void dumpMap()

Dump the cache map for debugging.

dumpCacheEntries

public void dumpCacheEntries()

Dump the cache entries from first to list for debugging.

getStatistics

public IStats getStatistics()

Description copied from interface: MemoryCache

Returns the historical and statistical data for a region's memory cache.

Specified by:

getStatistics in interface MemoryCache

Overrides:

getStatistics in class AbstractMemoryCache