Package jadex.collection

Class WeakValueMap<K,V>

java.lang.Object

jadex.collection.WeakValueMap<K,V>

All Implemented Interfaces:

Map<K,V>

public class WeakValueMap<K,V>
extends Object
implements Map<K,V>

A map with weak values.

Nested Class Summary

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

Map.Entry<K extends Object,V extends Object>

Field Summary

Fields

Modifier and Type	Field	Description
protected Map<K,WeakEntry<V>>	contents	The contents.
protected ReferenceQueue<V>	queue	The reference queue.

Constructor Summary

Constructors

Constructor	Description
WeakValueMap()	Create a new weak value map.

Method Summary

Modifier and Type	Method	Description
void	clear()	Clear the map.
boolean	containsKey(Object key)	Test if key contained.
boolean	containsValue(Object value)	Test if value contained.
Set<Map.Entry<K,V>>	entrySet()	Get the entries.
protected final void	expungeStaleEntries()	Remove garbage collected entries.
V	get(Object key)	Get value for key.
boolean	isEmpty()	Check if empty.
Set<K>	keySet()	Get the key set.
V	put(K key, V value)	Add value for key.
void	putAll(Map<? extends K,? extends V> m)	Add all mappings.
V	remove(Object key)	Remove value for key.
int	size()	Get the size.
Collection<V>	values()	Get the 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

compute, computeIfAbsent, computeIfPresent, equals, forEach, getOrDefault, hashCode, merge, putIfAbsent, remove, replace, replace, replaceAll

Field Details

contents

protected Map<K,WeakEntry<V>> contents

The contents.

queue

protected ReferenceQueue<V> queue

The reference queue.

Constructor Details

WeakValueMap

public WeakValueMap()

Create a new weak value map.

Method Details

size

public int size()

Get the size.

Specified by:

size in interface Map<K,V>

isEmpty

public boolean isEmpty()

Check if empty.

Specified by:

isEmpty in interface Map<K,V>

containsKey

public boolean containsKey(Object key)

Test if key contained.

Specified by:

containsKey in interface Map<K,V>

containsValue

public boolean containsValue(Object value)

Test if value contained.

Specified by:

containsValue in interface Map<K,V>

get

public V get(Object key)

Get value for key.

Specified by:

get in interface Map<K,V>

put

public V put(K key,
 V value)

Add value for key.

Specified by:

put in interface Map<K,V>

remove

public V remove(Object key)

Remove value for key.

Specified by:

remove in interface Map<K,V>

clear

public void clear()

Clear the map.

Specified by:

clear in interface Map<K,V>

putAll

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

Add all mappings.

Specified by:

putAll in interface Map<K,V>

keySet

public Set<K> keySet()

Get the key set.

Specified by:

keySet in interface Map<K,V>

values

public Collection<V> values()

Get the values.

Specified by:

values in interface Map<K,V>

entrySet

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

Get the entries.

Specified by:

entrySet in interface Map<K,V>

expungeStaleEntries

protected final void expungeStaleEntries()

Remove garbage collected entries.