com.caucho.util

Class LongKeyHashMap<E>

java.lang.Object

com.caucho.util.LongKeyHashMap<E>

public class LongKeyHashMap<E>
extends java.lang.Object

Cache with a clock replacement policy.

Null keys are not allowed. LruCache is synchronized.

Constructor Summary

Constructors

Constructor and Description
LongKeyHashMap() Create the clock cache with a specific capacity.
LongKeyHashMap(int initialCapacity) Create the clock cache with a specific capacity.

Method Summary

Modifier and Type	Method and Description
void	clear() Clears the map
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.
E	remove(long key) Removes an item from the map
int	size() Returns the current number of entries in the cache.
java.util.Iterator<E>	valueIterator()

Methods inherited from class java.lang.Object

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

Constructor Detail

LongKeyHashMap

public LongKeyHashMap()

Create the clock cache with a specific capacity.

Parameters:

initialCapacity - minimum capacity of the cache

LongKeyHashMap

public LongKeyHashMap(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 map

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 E remove(long key)

Removes an item from the map

Parameters:

key - the key to remove

Returns:

the value removed

valueIterator

public java.util.Iterator<E> valueIterator()