org.springframework.util

Interface MultiValueMap<K,V>

All Superinterfaces:

Map<K,List<V>>

All Known Implementing Classes:

HttpHeaders, LinkedMultiValueMap

public interface MultiValueMap<K,V>
extends Map<K,List<V>>

Extension of the Map interface that stores multiple values.

Since:

3.0

Author:

Arjen Poutsma

Nested Class Summary

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

Map.Entry<K,V>

Method Summary

Modifier and Type	Method and Description
void	add(K key, V value) Add the given single value to the current list of values for the given key.
V	getFirst(K key) Return the first value for the given 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.
Map<K,V>	toSingleValueMap() Returns the first values contained in this MultiValueMap.

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

Method Detail

getFirst

V getFirst(K key)

Return the first value for the given key.

Parameters:

key - the key

Returns:

the first value for the specified key, or null

add

void add(K key,
         V value)

Add the given single value to the current list of values for the given key.

Parameters:

key - the key

value - the value to be added

set

void set(K key,
         V value)

Set the given single value under the given key.

Parameters:

key - the key

value - the value to set

setAll

void setAll(Map<K,V> values)

Set the given values under.

Parameters:

values - the values.

toSingleValueMap

Map<K,V> toSingleValueMap()

Returns the first values contained in this MultiValueMap.

Returns:

a single value representation of this map