Package com.globalmentor.collections

Class IdentityHashSetMap<K,V>

java.lang.Object

com.globalmentor.collections.MapDecorator<K,C>

com.globalmentor.collections.AbstractDecoratorCollectionMap<K,V,Set<V>>

com.globalmentor.collections.IdentityHashSetMap<K,V>

Type Parameters:

K - The type of map key.

V - The type of map value.

All Implemented Interfaces:

CollectionMap<K,V,Set<V>>, Map<K,Set<V>>

public class IdentityHashSetMap<K,V>
extends AbstractDecoratorCollectionMap<K,V,Set<V>>

An decorator map that stores an IdentityHashSet of values for each key, with special methods for retrieving single values.

Author:

Garret Wilson

Nested Class Summary

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

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

Field Summary

Fields inherited from class com.globalmentor.collections.MapDecorator

map

Constructor Summary

Constructors

Constructor	Description
IdentityHashSetMap(Map<K,Set<V>> map)	Map constructor.

Method Summary

Modifier and Type	Method	Description
Set<V>	createCollection()	Creates a collection in which to store values.

Methods inherited from class com.globalmentor.collections.AbstractDecoratorCollectionMap

addItem, getCollection, getItem, getItemCount, getItems, hasItems, removeItem

Methods inherited from class com.globalmentor.collections.MapDecorator

clear, compute, computeIfAbsent, computeIfPresent, containsKey, containsValue, entrySet, equals, forEach, get, getOrDefault, hashCode, isEmpty, keySet, merge, put, putAll, putIfAbsent, remove, remove, replace, replace, replaceAll, size, values

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.Map

clear, compute, computeIfAbsent, computeIfPresent, containsKey, containsValue, entrySet, equals, forEach, get, getOrDefault, hashCode, isEmpty, keySet, merge, put, putAll, putIfAbsent, remove, remove, replace, replace, replaceAll, size, values

Constructor Details

IdentityHashSetMap

public IdentityHashSetMap(Map<K,Set<V>> map)

Map constructor.

Parameters:

map - The map this map should decorate.

Throws:

NullPointerException - if the provided map is null.

Method Details

createCollection

public Set<V> createCollection()

Creates a collection in which to store values. This version returns an IdentityHashSet.

Returns:

The collections with the values stored.