org.castor.cache.simple
Class CountLimited<K,V>

java.lang.Object
  org.castor.cache.AbstractBaseCache<K,V>
      org.castor.cache.simple.CountLimited<K,V>

Type Parameters:

K - the type of keys maintained by this cache

V - the type of cached values

All Implemented Interfaces:

Map<K,V>, Cache<K,V>

public final class CountLimited<K,V>
extends AbstractBaseCache<K,V>

CountLimited is a count limted least-recently-used Map. Every object being put in the Map will live until the map is full. If the map is full, the least recently used object will be disposed.

The capacity is passed to the cache at initialization by the individual cache property capacity which defines the maximum number of objects the cache can hold. If not specified a default capacity of 30 objects will be used.

Version:

$Revision: 9040 $ $Date: 2011-08-16 08:26:59 +0200 (Di, 16 Aug 2011) $

Author:

Thomas Yip, Werner Guttmann, Ralf Joachim

Nested Class Summary

Nested classes/interfaces inherited from interface java.util.Map

Map.Entry<K,V>

Field Summary

static int	DEFAULT_CAPACITY Default capacity of cache.
static String	PARAM_CAPACITY Mapped initialization parameter capacity.
static String	TYPE The type of the cache.

Fields inherited from interface org.castor.cache.Cache

DEFAULT_DEBUG, DEFAULT_NAME, DEFAULT_TYPE, PARAM_DEBUG, PARAM_NAME, PARAM_TYPE

Constructor Summary

CountLimited()

Method Summary

void	clear()
boolean	containsKey(Object key)
boolean	containsValue(Object value)
Set<Map.Entry<K,V>>	entrySet()
V	get(Object key)
int	getCapacity() Get real capacity of this cache.
String	getType() Indicates the type of this cache.
void	initialize(Properties params) Lyfe-cycle method to allow custom initialization of cache implementations.
boolean	isEmpty()
Set<K>	keySet()
V	put(K key, V value)
void	putAll(Map<? extends K,? extends V> map)
V	remove(Object key)
int	size()
Collection<V>	values()

Methods inherited from class org.castor.cache.AbstractBaseCache

close, expire, expireAll, getName

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map

equals, hashCode

Field Detail

TYPE

public static final String TYPE

The type of the cache.

See Also:

Constant Field Values

PARAM_CAPACITY

public static final String PARAM_CAPACITY

Mapped initialization parameter capacity.

See Also:

Constant Field Values

DEFAULT_CAPACITY

public static final int DEFAULT_CAPACITY

Default capacity of cache.

See Also:

Constant Field Values

Constructor Detail

CountLimited

public CountLimited()

Method Detail

initialize

public void initialize(Properties params)
                throws CacheAcquireException

Lyfe-cycle method to allow custom initialization of cache implementations.

Specified by:

initialize in interface Cache<K,V>

Overrides:

initialize in class AbstractBaseCache<K,V>

Parameters:

params - Parameters to initialize the cache (e.g. name, capacity).

Throws:

CacheAcquireException - If cache can not be initialized.

getType

public String getType()

Indicates the type of this cache.

Returns:

The cache type.

getCapacity

public int getCapacity()

Get real capacity of this cache.

Returns:

Real capacity of this cache.

size

public int size()

isEmpty

public boolean isEmpty()

containsKey

public boolean containsKey(Object key)

containsValue

public boolean containsValue(Object value)

get

public V get(Object key)

put

public V put(K key,
             V value)

remove

public V remove(Object key)

putAll

public void putAll(Map<? extends K,? extends V> map)

clear

public void clear()

keySet

public Set<K> keySet()

values

public Collection<V> values()

entrySet

public Set<Map.Entry<K,V>> entrySet()