Package org.hibernate.internal.util.collections

Class IdentityMap<K,V>

java.lang.Object

org.hibernate.internal.util.collections.IdentityMap<K,V>

All Implemented Interfaces:

Map<K,V>

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

A Map where keys are compared by object identity, rather than equals().

Nested Class Summary

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

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

Method Summary

Modifier and Type	Method	Description
void	clear()
static <K,V> Map.Entry<K,V>[]	concurrentEntries(Map<K,V> map)	Return the map entries (as instances of Map.Entry in a collection that is safe from concurrent modification).
boolean	containsKey(Object key)
boolean	containsValue(Object val)
Map.Entry[]	entryArray()
Set<Map.Entry<K,V>>	entrySet()
void	forEach(BiConsumer<? super K,? super V> action)	Override MapforEach(BiConsumer) to provide a more efficient implementation
V	get(Object key)
static <K,V> IdentityMap<K,V>	instantiateSequenced(int size)	Return a new instance of this class, with iteration order defined as the order in which entries were added
boolean	isEmpty()
Iterator<K>	keyIterator()
Set<K>	keySet()
static <K,V> void	onEachKey(Map<K,V> map, Consumer<K> consumer)
V	put(K key, V value)
void	putAll(Map<? extends K,? extends V> otherMap)
V	remove(Object key)
int	size()
String	toString()
Collection<V>	values()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Map

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

Method Detail

instantiateSequenced

public static <K,V> IdentityMap<K,V> instantiateSequenced(int size)

Return a new instance of this class, with iteration order defined as the order in which entries were added

Parameters:

size - The size of the map to create

Returns:

The map

concurrentEntries

public static <K,V> Map.Entry<K,V>[] concurrentEntries(Map<K,V> map)

Return the map entries (as instances of Map.Entry in a collection that is safe from concurrent modification). ie. we may safely add new instances to the underlying Map during iteration of the entries().

Parameters:

map - The map of entries

Returns:

Collection

onEachKey

public static <K,V> void onEachKey(Map<K,V> map,
                                         Consumer<K> consumer)

forEach

public void forEach(BiConsumer<? super K,? super V> action)

Override MapforEach(BiConsumer) to provide a more efficient implementation

Specified by:

forEach in interface Map<K,V>

Parameters:

action - the operation to apply to each element

keyIterator

public Iterator<K> keyIterator()

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 val)

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> otherMap)

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>

entryArray

public Map.Entry[] entryArray()

toString

public String toString()

Overrides:

toString in class Object