com.caucho.util
Class LongKeyClockCache<E extends ClockCacheItem>

java.lang.Object
  com.caucho.util.LongKeyClockCache<E>

public class LongKeyClockCache<E extends ClockCacheItem>
extends java.lang.Object

Cache with a clock replacement policy.

Null keys are not allowed. LruCache is synchronized.

Constructor Summary

LongKeyClockCache(int initialCapacity)
Create the clock cache with a specific capacity.

Method Summary

void	clear() Clears the cache
E	get(long key) Get an item from the cache and make it most recently used.
E	put(long key, E value) Puts a new item in the cache.
ClockCacheItem	remove(long key) Removes an item from the cache
int	size() Returns the current number of entries in the cache.

Methods inherited from class java.lang.Object

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

Constructor Detail

LongKeyClockCache

public LongKeyClockCache(int initialCapacity)

Create the clock cache with a specific capacity.

Parameters:

initialCapacity - minimum capacity of the cache

Method Detail

size

public int size()

Returns the current number of entries in the cache.

clear

public void clear()

Clears the cache

get

public E get(long key)

Get an item from the cache and make it most recently used.

Parameters:

key - key to lookup the item

Returns:

the matching object in the cache

put

public E put(long key,
             E value)

Puts a new item in the cache. If the cache is full, remove the LRU item.

Parameters:

key - key to store data

value - value to be stored

Returns:

old value stored under the key

remove

public ClockCacheItem remove(long key)

Removes an item from the cache

Parameters:

key - the key to remove

Returns:

the value removed