MRUMemoryCache (Commons JCS 2.0.0-SNAPSHOT API)

Overview

Package

Class

Use

Tree

Deprecated

Index

Help

PREV CLASS NEXT CLASS

FRAMES NO FRAMES

SUMMARY: NESTED | FIELD | CONSTR | METHOD

DETAIL: FIELD | CONSTR | METHOD

org.apache.jcs.engine.memory.mru
Class MRUMemoryCache<K extends Serializable,V extends Serializable>

java.lang.Object
  org.apache.jcs.engine.memory.AbstractMemoryCache<K,V>
      org.apache.jcs.engine.memory.AbstractDoubleLinkedListMemoryCache<K,V>
          org.apache.jcs.engine.memory.mru.MRUMemoryCache<K,V>

All Implemented Interfaces:: Serializable, IRequireScheduler, IMemoryCache<K,V>

public class MRUMemoryCache<K extends Serializable,V extends Serializable>
extends AbstractDoubleLinkedListMemoryCache<K,V>
extends AbstractDoubleLinkedListMemoryCache<K,V>

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.

See Also:: Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.jcs.engine.memory.AbstractDoubleLinkedListMemoryCache
`AbstractDoubleLinkedListMemoryCache.IteratorWrapper<K extends Serializable,V extends Serializable>, AbstractDoubleLinkedListMemoryCache.MapEntryWrapper<K extends Serializable,V extends Serializable>`

Field Summary

Fields inherited from class org.apache.jcs.engine.memory.AbstractDoubleLinkedListMemoryCache
`hitCnt, list, missCnt`

Fields inherited from class org.apache.jcs.engine.memory.AbstractMemoryCache
`cache, cacheAttributes, cacheName, chunkSize, elementAttributes, map, status`

Constructor Summary
`MRUMemoryCache()`

Method Summary
`protected void`	`adjustListForGet(MemoryElementDescriptor<K,V> me)` Makes the item the last in the list.
`protected MemoryElementDescriptor<K,V>`	`adjustListForUpdate(ICacheElement<K,V> ce)` Adds the item to the front of the list.

Methods inherited from class org.apache.jcs.engine.memory.AbstractDoubleLinkedListMemoryCache
`addFirst, addLast, createMap, dumpCacheEntries, dumpCacheSize, freeElements, get, getIterator, getKeySet, getStatistics, initialize, remove, removeAll, spoolLastElement, update, verifyCache`

Methods inherited from class org.apache.jcs.engine.memory.AbstractMemoryCache
`dispose, dumpMap, getCacheAttributes, getCacheName, getCompositeCache, getGroupKeys, getGroupNames, getMultiple, getQuiet, getSize, getStatus, setCacheAttributes, setScheduledExecutorService, 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

adjustListForUpdate

protected MemoryElementDescriptor<K,V> adjustListForUpdate(ICacheElement<K,V> ce)
                                                                                              throws IOException

Adds the item to the front of the list. A put doesn't count as a usage.

It's not clear if the put operation should be different. Perhaps this should remove the oldest if full, and then put.

Specified by:: adjustListForUpdate in class AbstractDoubleLinkedListMemoryCache<K extends Serializable,V extends Serializable>

Parameters:: ce -
Returns:: MemoryElementDescriptor the new node
Throws:: IOException

adjustListForGet

protected void adjustListForGet(MemoryElementDescriptor<K,V> me)

Makes the item the last in the list.

Specified by:: adjustListForGet in class AbstractDoubleLinkedListMemoryCache<K extends Serializable,V extends Serializable>

Parameters:: me -