Class ConcurrentWeakHashMap<K,V>

java.lang.Object

java.util.AbstractMap<K,V>

org.apfloat.ConcurrentWeakHashMap<K,V>

All Implemented Interfaces:

Map<K,V>

class ConcurrentWeakHashMap<K,V>
extends AbstractMap<K,V>

Combination of WeakHashMap and ConcurrentHashMap, providing weak keys and non-blocking access.

Since:

1.5

Version:

1.9.0

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static class	ConcurrentWeakHashMap.Key

Nested classes/interfaces inherited from class AbstractMap

AbstractMap.SimpleEntry<K,V>, AbstractMap.SimpleImmutableEntry<K,V>

Nested classes/interfaces inherited from interface Map

Map.Entry<K,V>

Field Summary

Fields

Modifier and Type	Field	Description
private ConcurrentHashMap<ConcurrentWeakHashMap.Key, V>	map
private ReferenceQueue<Object>	queue

Constructor Summary

Constructors

Constructor	Description
ConcurrentWeakHashMap()

Method Summary

Modifier and Type	Method	Description
void	clear()
Set<Map.Entry<K,V>>	entrySet()
private void	expungeStaleEntries()
V	get(Object key)
boolean	isEmpty()
V	put(K key, V value)
V	remove(Object key)
int	size()
private ConcurrentWeakHashMap.Key	wrap(Object key)

Methods inherited from class AbstractMap

clone, containsKey, containsValue, equals, hashCode, keySet, putAll, toString, values

Methods inherited from class Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface Map

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

Field Details

map

private ConcurrentHashMap<ConcurrentWeakHashMap.Key, V> map

queue

private ReferenceQueue<Object> queue

Constructor Details

ConcurrentWeakHashMap

public ConcurrentWeakHashMap()

Method Details

clear

public void clear()

Specified by:

clear in interface Map<K,V>

Overrides:

clear in class AbstractMap<K,V>

entrySet

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

Specified by:

entrySet in interface Map<K,V>

Specified by:

entrySet in class AbstractMap<K,V>

get

public V get(Object key)

Specified by:

get in interface Map<K,V>

Overrides:

get in class AbstractMap<K,V>

put

public V put(K key,
 V value)

Specified by:

put in interface Map<K,V>

Overrides:

put in class AbstractMap<K,V>

remove

public V remove(Object key)

Specified by:

remove in interface Map<K,V>

Overrides:

remove in class AbstractMap<K,V>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<K,V>

Overrides:

isEmpty in class AbstractMap<K,V>

size

public int size()

Specified by:

size in interface Map<K,V>

Overrides:

size in class AbstractMap<K,V>

wrap

private ConcurrentWeakHashMap.Key wrap(Object key)

expungeStaleEntries

private void expungeStaleEntries()