com.sun.ejb.containers.util.cache

Class LruEJBCache

java.lang.Object

com.sun.appserv.util.cache.BaseCache

com.sun.appserv.util.cache.LruCache

com.sun.ejb.containers.util.cache.LruEJBCache

All Implemented Interfaces:

Cache

Direct Known Subclasses:

FIFOEJBObjectCache, LruSessionCache

public class LruEJBCache
extends LruCache

LRUCache in-memory bounded cache with an LRU list

Nested Class Summary

Nested classes/interfaces inherited from class com.sun.appserv.util.cache.LruCache

LruCache.LruCacheItem

Nested classes/interfaces inherited from class com.sun.appserv.util.cache.BaseCache

BaseCache.CacheItem

Field Summary

Fields

Modifier and Type	Field and Description
protected static Logger	_logger
protected String	cacheName

Fields inherited from class com.sun.appserv.util.cache.LruCache

defaultMaxEntries, head, isUnbounded, listSize, NO_TIMEOUT, tail, timeout, trimCount

Fields inherited from class com.sun.appserv.util.cache.BaseCache

bucketLocks, buckets, entryCount, hitCount, listeners, maxBuckets, maxEntries, missCount, refreshFlags, removalCount, threshold

Constructor Summary

Constructors

Constructor and Description
LruEJBCache() default constructor

Method Summary

Modifier and Type	Method and Description
protected BaseCache.CacheItem	itemAdded(BaseCache.CacheItem item) /** this item is just added to the cache
void	setCacheName(String name)
protected BaseCache.CacheItem	trimLru(long currentTime) trim one item from the LRU list

Methods inherited from class com.sun.appserv.util.cache.LruCache

createItem, getStatByName, getStats, init, itemAccessed, itemRefreshed, itemRemoved, setTimeout, trimExpiredEntries

Methods inherited from class com.sun.appserv.util.cache.BaseCache

_put, _remove, _removeItem, add, add, addCacheListener, clear, clearStats, contains, decrementEntryCount, destroy, elements, eq, get, get, getAll, getEntryCount, getIndex, getIndex, handleOverflow, hash, incrementAddCount, incrementEntryCount, incrementHitCount, incrementMissCount, incrementOverflowCount, incrementRefreshCount, incrementRemovalCount, init, init, isEmpty, isThresholdReached, keys, loadValue, notifyRefresh, put, put, remove, remove, remove, removeAll, trimItem, values, waitRefresh

Methods inherited from class java.lang.Object

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

Field Detail

_logger

protected static final Logger _logger

cacheName

protected String cacheName

Constructor Detail

LruEJBCache

public LruEJBCache()

default constructor

Method Detail

trimLru

protected BaseCache.CacheItem trimLru(long currentTime)

Description copied from class: LruCache

trim one item from the LRU list

Overrides:

trimLru in class LruCache

Parameters:

currentTime - of this operation

Returns:

the item trimmed from cache list synchronization is handled by the caller

itemAdded

protected BaseCache.CacheItem itemAdded(BaseCache.CacheItem item)

Description copied from class: LruCache

/** this item is just added to the cache

Overrides:

itemAdded in class LruCache

Parameters:

item - CacheItem that was created

Returns:

a overflow item; may be null this function checks if adding the new item results in a overflow; if so, it returns the item to be removed. Cache bucket is already synchronized by the caller

setCacheName

public void setCacheName(String name)