Package org.springframework.util

Class MultiValueMapAdapter<K,V>

java.lang.Object

org.springframework.util.MultiValueMapAdapter<K,V>

Type Parameters:

K - the key type

V - the value element type

All Implemented Interfaces:

Serializable, Map<K,List<V>>, MultiValueMap<K,V>

Direct Known Subclasses:

LinkedMultiValueMap

public class MultiValueMapAdapter<K,V>
extends Object
implements MultiValueMap<K,V>, Serializable

Adapts a given Map to the MultiValueMap contract.

Since:

5.3

Author:

Arjen Poutsma, Juergen Hoeller

See Also:

• CollectionUtils.toMultiValueMap(java.util.Map<K, java.util.List<V>>)
• LinkedMultiValueMap
• Serialized Form

Nested Class Summary

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

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

Constructor Summary

Constructors

Constructor	Description
MultiValueMapAdapter(Map<K,List<V>> targetMap)	Wrap the given target Map as a MultiValueMap adapter.

Method Summary

Modifier and Type	Method	Description
void	add(K key, V value)	Add the given single value to the current list of values for the given key.
void	addAll(K key, List<? extends V> values)	Add all the values of the given list to the current list of values for the given key.
void	addAll(MultiValueMap<K,V> values)	Add all the values of the given MultiValueMap to the current values.
void	clear()
boolean	containsKey(Object key)
boolean	containsValue(Object value)
Set<Map.Entry<K,List<V>>>	entrySet()
boolean	equals(Object other)
void	forEach(BiConsumer<? super K,? super List<V>> action)
List<V>	get(Object key)
V	getFirst(K key)	Return the first value for the given key.
int	hashCode()
boolean	isEmpty()
Set<K>	keySet()
List<V>	put(K key, List<V> value)
void	putAll(Map<? extends K,? extends List<V>> map)
List<V>	putIfAbsent(K key, List<V> value)
List<V>	remove(Object key)
void	set(K key, V value)	Set the given single value under the given key.
void	setAll(Map<K,V> values)	Set the given values under.
int	size()
Map<K,V>	toSingleValueMap()	Return a Map with the first values contained in this MultiValueMap.
String	toString()
Collection<List<V>>	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, getOrDefault, merge, remove, replace, replace, replaceAll

Methods inherited from interface org.springframework.util.MultiValueMap

addIfAbsent

Constructor Details

MultiValueMapAdapter

public MultiValueMapAdapter(Map<K,List<V>> targetMap)

Wrap the given target Map as a MultiValueMap adapter.

Parameters:

targetMap - the plain target Map

Method Details

getFirst

@Nullable
public V getFirst(K key)

Description copied from interface: MultiValueMap

Return the first value for the given key.

Specified by:

getFirst in interface MultiValueMap<K,V>

Parameters:

key - the key

Returns:

the first value for the specified key, or null if none

add

public void add(