Module litebridge.commons

Package org.litebridge.commons.type

Class WeakIdentityMap<K,V>

java.lang.Object

org.litebridge.commons.type.WeakIdentityMap<K,V>

Type Parameters:

K - the type of keys maintained by this map

V - the type of mapped values

All Implemented Interfaces:

Map<K,V>

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

A Map implementation that uses weak references for keys and compares keys using identity comparison (==). This implementation automatically removes entries when their keys are no longer strongly reachable.

This is useful for caching scenarios where: - Keys should be automatically removed when they're no longer referenced elsewhere - Key equality should be based on identity rather than equals()

See Also:

• WeakIdentitySet

Nested Class Summary

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

Map.Entry<K,V>

Constructor Summary

Constructors

Constructor	Description
WeakIdentityMap()

Method Summary

Modifier and Type	Method	Description
void	clear()
boolean	containsKey(Object key)
boolean	containsValue(Object value)
Set<Map.Entry<K,V>>	entrySet()
@Nullable V	get(Object key)
boolean	isEmpty()
Set<K>	keySet()
@Nullable V	put(K key, @Nullable V value)
void	putAll(Map<? extends K,? extends V> m)
@Nullable V	remove(Object key)
int	size()
Collection<@Nullable 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

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

Constructor Details

WeakIdentityMap

public WeakIdentityMap()

Method Details

put

public @Nullable V put(K key,
 @Nullable V value)

Specified by:

put in interface Map<K,V>

get

public @Nullable V get(Object key)

Specified by:

get in interface Map<K,V>

remove

public @Nullable V remove(Object key)

Specified by:

remove in interface Map<K,V>

containsKey

public boolean containsKey(Object key)

Specified by:

containsKey in interface Map<K,V>

size

public int size()

Specified by:

size in interface Map<K,V>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<K,V>

clear

public void clear()

Specified by:

clear in interface Map<K,V>

putAll

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

Specified by:

putAll in interface Map<K,V>

containsValue

public boolean containsValue(Object value)

Specified by:

containsValue in interface Map<K,V>

keySet

public Set<K> keySet()

Specified by:

keySet in interface Map<K,V>

values

public Collection<@Nullable 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>