org.jboss.jca.adapters.jdbc.util
Class LRUCache.LRUList

java.lang.Object
  org.jboss.jca.adapters.jdbc.util.LRUCache.LRUList

Enclosing class:

LRUCache<K,V>

public class LRUCache.LRUList
extends Object

Double queued list used to store cache entries.

Constructor Summary

protected

LRUCache.LRUList() Creates a new double queued list.

Method Summary

protected void	capacityChanged(int oldCapacity) Callback that signals that the capacity of the cache is changed.
protected void	clear() Clear
protected void	demote() Demotes from the cache the least used entry.
protected void	entryAdded(LRUCache.LRUCacheEntry<K,V> entry) Callback that signals that the given entry has been added to the cache.
protected void	entryPromotion(LRUCache.LRUCacheEntry<K,V> entry) Callback that signals that the given entry is just about to be added.
protected void	entryRemoved(LRUCache.LRUCacheEntry<K,V> entry) Callback that signals that the given entry has been removed from the cache.
protected void	promote(LRUCache.LRUCacheEntry<K,V> entry) Promotes the cache entry entry to the last used position of the list.
protected void	remove(LRUCache.LRUCacheEntry<K,V> entry) Removes from the cache list the specified entry.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

LRUCache.LRUList

protected LRUCache.LRUList()

Creates a new double queued list.

Method Detail

promote

protected void promote(LRUCache.LRUCacheEntry<K,V> entry)

Promotes the cache entry entry to the last used position of the list.
If the object is already there, does nothing.

Parameters:

entry - the object to be promoted, cannot be null

Throws:

IllegalStateException - if this method is called with a full cache

See Also:

demote()

demote

protected void demote()

Demotes from the cache the least used entry.
If the cache is not full, does nothing.

See Also:

promote(org.jboss.jca.adapters.jdbc.util.LRUCache.LRUCacheEntry)

remove

protected void remove(LRUCache.LRUCacheEntry<K,V> entry)

Removes from the cache list the specified entry.

Parameters:

entry -

entryPromotion

protected void entryPromotion(LRUCache.LRUCacheEntry<K,V> entry)

Callback that signals that the given entry is just about to be added.

Parameters:

entry -

entryAdded

protected void entryAdded(LRUCache.LRUCacheEntry<K,V> entry)

Callback that signals that the given entry has been added to the cache.

Parameters:

entry -

entryRemoved

protected void entryRemoved(LRUCache.LRUCacheEntry<K,V> entry)

Callback that signals that the given entry has been removed from the cache.

Parameters:

entry -

capacityChanged

protected void capacityChanged(int oldCapacity)

Callback that signals that the capacity of the cache is changed.

Parameters:

oldCapacity - the capacity before the change happened

clear

protected void clear()

Clear

toString

public String toString()

Overrides:

toString in class Object