com.bluegosling.collections

Class TransformingMap.ValuesOnly<K,VI,VO>

java.lang.Object

com.bluegosling.collections.TransformingMap<K,VI,K,VO>

com.bluegosling.collections.TransformingMap.ValuesOnly<K,VI,VO>

Type Parameters:

K - the type of key in the map

VI - the "input" value type

VO - the "output" value type

All Implemented Interfaces:

Map<K,VO>

Enclosing class:

TransformingMap<KI,VI,KO,VO>

public static class TransformingMap.ValuesOnly<K,VI,VO>
extends TransformingMap<K,VI,K,VO>

A TransformingMap that only transforms map values, not keys. Due to this constraint, it provides more efficient implementations for some methods.

Nested Class Summary

Nested classes/interfaces inherited from class com.bluegosling.collections.TransformingMap

TransformingMap.Bidi<KI,VI,KO,VO>, TransformingMap.ReadOnly<KI,VI,KO,VO>, TransformingMap.ValuesOnly<K,VI,VO>

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

Map.Entry<K,V>

Constructor Summary

Constructors

Constructor and Description
ValuesOnly(Map<K,VI> internal, BiFunction<? super K,? super VI,? extends VO> fn) Constructs a new map that wraps the given map, transforming its values using the given function.

Method Summary

Modifier and Type	Method and Description
boolean	containsKey(Object key)
Set<Map.Entry<K,VO>>	entrySet()
VO	get(Object key)
Set<K>	keySet()
VO	remove(Object key)

Methods inherited from class com.bluegosling.collections.TransformingMap

clear, containsValue, equals, hashCode, internal, isEmpty, keyFunction, put, putAll, size, toString, transformingKeys, transformingValues, transformingValues, valueFunction, values

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map

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

Constructor Detail

ValuesOnly

public ValuesOnly(Map<K,VI> internal,
                  BiFunction<? super K,? super VI,? extends VO> fn)

Constructs a new map that wraps the given map, transforming its values using the given function.

Parameters:

internal - the map being wrapped

fn - the function used to produce transformed map values

Method Detail

containsKey

public boolean containsKey(Object key)

Specified by:

containsKey in interface Map<K,VO>

Overrides:

containsKey in class TransformingMap<K,VI,K,VO>

get

public VO get(Object key)

Specified by:

get in interface Map<K,VO>

Overrides:

get in class TransformingMap<K,VI,K,VO>

remove

public VO remove(Object key)

Specified by:

remove in interface Map<K,VO>

Overrides:

remove in class TransformingMap<K,VI,K,VO>

keySet

public Set<K> keySet()

Specified by:

keySet in interface Map<K,VO>

Overrides:

keySet in class TransformingMap<K,VI,K,VO>

entrySet

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

Specified by:

entrySet in interface Map<K,VO>

Overrides:

entrySet in class TransformingMap<K,VI,K,VO>