org.apache.wicket.util.collections
Class MicroMap<K,V>

java.lang.Object
  org.apache.wicket.util.collections.MicroMap<K,V>

Type Parameters:

K - Key type

V - Value type

All Implemented Interfaces:

Serializable, Map<K,V>

public final class MicroMap<K,V>
extends Object
implements Map<K,V>, Serializable

An implementation of the java.util.Map interface which can only hold a single object. This is particularly useful to control memory usage in Wicket because many containers hold only a single component.

Author:

Jonathan Locke

See Also:

Serialized Form

Nested Class Summary

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

Map.Entry<K,V>

Field Summary

static int

MAX_ENTRIES The maximum number of entries this map supports.

Constructor Summary

MicroMap()
Constructor

MicroMap(K key, V value)
Constructs map with a single key and value pair.

Method Summary

void	clear()
boolean	containsKey(Object key)
boolean	containsValue(Object value)
Set<Map.Entry<K,V>>	entrySet()
V	get(Object key)
boolean	isEmpty()
boolean	isFull()
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 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

MAX_ENTRIES

public static final int MAX_ENTRIES

The maximum number of entries this map supports.

See Also:

Constant Field Values

Constructor Detail

MicroMap

public MicroMap()

Constructor

MicroMap

public MicroMap(K key,
                V value)

Constructs map with a single key and value pair.

Parameters:

key - The key

value - The value

Method Detail

isFull

public boolean isFull()

Returns:

True if this MicroMap is full

size

public int size()

Specified by:

size in interface Map<K,V>

See Also:

Map.size()

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<K,V>

See Also:

Map.isEmpty()

containsKey

public boolean containsKey(Object key)

Specified by:

containsKey in interface Map<K,V>

See Also:

Map.containsKey(java.lang.Object)

containsValue

public boolean containsValue(Object value)

Specified by:

containsValue in interface Map<K,V>

See Also:

Map.containsValue(java.lang.Object)

get

public V get(Object key)

Specified by:

get in interface Map<K,V>

See Also:

Map.get(java.lang.Object)

put

public V put(K key,
             V value)

Specified by:

put in interface Map<K,V>

See Also:

Map.put(java.lang.Object, java.lang.Object)

remove

public V remove(Object key)

Specified by:

remove in interface Map<K,V>

See Also:

Map.remove(java.lang.Object)

putAll

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

Specified by:

putAll in interface Map<K,V>

See Also:

Map.putAll(java.util.Map)

clear

public void clear()

Specified by:

clear in interface Map<K,V>

See Also:

Map.clear()

keySet

public Set<K> keySet()

Specified by:

keySet in interface Map<K,V>

See Also:

Map.keySet()

values

public Collection<V> values()

Specified by:

values in interface Map<K,V>

See Also:

Map.values()

entrySet

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

Specified by:

entrySet in interface Map<K,V>

See Also:

Map.entrySet()