org.castor.cache.hashbelt.container
Class FastIteratingContainer<K,V>

java.lang.Object
  org.castor.cache.hashbelt.container.FastIteratingContainer<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>, Container<K,V>

public final class FastIteratingContainer<K,V>
extends Object
implements Container<K,V>

The FastIteratingContainer implementation of the Container interface assuems two things:

• Puts and removes are rare in proportion to gets and iteration are common. Put and remove are much more expensive here than in MapContainer.
• Keys will not be reused (using a key twice with different values implicitly does an expensive remove).

Since:

1.0

Version:

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

Author:

Gregory Block, Ralf Joachim

Nested Class Summary

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

Map.Entry<K,V>

Constructor Summary

FastIteratingContainer()

Method Summary

void	clear()
boolean	containsKey(Object key)
boolean	containsValue(Object value)
Set<Map.Entry<K,V>>	entrySet()
V	get(Object key)
long	getTimestamp() Returns the timestamp of this container.
boolean	isEmpty()
Iterator<K>	keyIterator() Returns an iterator over the keys contained in this container.
Set<K>	keySet()
V	put(K key, V value)
void	putAll(Map<? extends K,? extends V> map)
V	remove(Object key)
int	size()
void	updateTimestamp() Set the timestamp of this container to System.currentTimeMillis().
Iterator<V>	valueIterator() Returns an iterator over the values contained in this container.
Collection<V>	values()

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

Constructor Detail

FastIteratingContainer

public FastIteratingContainer()

Method Detail

updateTimestamp

public void updateTimestamp()

Set the timestamp of this container to System.currentTimeMillis().

Specified by:

updateTimestamp in interface Container<K,V>

getTimestamp

public long getTimestamp()

Returns the timestamp of this container.

Specified by:

getTimestamp in interface Container<K,V>

Returns:

The timestamp.

keyIterator

public Iterator<K> keyIterator()

Returns an iterator over the keys contained in this container. If the container is modified while an iteration is in progress, the results of the iteration is not affected and vice-versa.

Specified by:

keyIterator in interface Container<K,V>

Returns:

An iterator over the keys currently contained in the container.

valueIterator

public Iterator<V> valueIterator()

Returns an iterator over the values contained in this container. If the container is modified while an iteration is in progress, the results of the iteration is not affected and vice-versa.

Specified by:

valueIterator in interface Container<K,V>

Returns:

An iterator over the values currently contained in the container.

size

public int size()

Specified by:

size in interface Map<K,V>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<K,V>

containsKey

public boolean containsKey(Object key)

Specified by:

containsKey in interface Map<K,V>

containsValue

public boolean containsValue(Object value)

Specified by:

containsValue in interface Map<K,V>

get

public V get(Object key)

Specified by:

get in interface Map<K,V>

put

public V put(K key,
             V value)

Specified by:

put in interface Map<K,V>

remove

public V remove(Object key)

Specified by:

remove in interface Map<K,V>

putAll

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

Specified by:

putAll in interface Map<K,V>

clear

public void clear()

Specified by:

clear in interface Map<K,V>

keySet

public Set<K> keySet()

Specified by:

keySet in interface Map<K,V>

values

public Collection<V> values()

Specified by:

values in interface Map<K,V>

entrySet

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

Specified by:

entrySet in interface Map<K,V>