com.jn.langx.util.collection.multivalue

接口 MultiValueMap<K,V>

类型参数:

K - the key type

V - the value element type

所有超级接口:

Map<K,Collection<V>>

所有已知实现类:

CommonMultiValueMap, HttpHeaders, LinkedMultiValueMap, MultiValueMapAdapter

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

Extension of the Map interface that stores multiple values.

作者:

Arjen Poutsma

嵌套类概要

从接口继承的嵌套类/接口 java.util.Map

Map.Entry<K,V>

方法概要

限定符和类型	方法和说明
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, Collection<? 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	addIfAbsent(K key, V value) Add the given value, only when the map does not contain 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,List<V>>	toMap()
Map<K,V>	toSingleValueMap() Return a Map with the first values contained in this MultiValueMap.
int	total()

从接口继承的方法 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

方法详细资料

getFirst

@Nullable
V getFirst(K key)

Return the first value for the given key.

参数:

key - the key

返回:

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

add

void add(K key,
         @Nullable
         V value)

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

参数:

key - the key

value - the value to be added

addAll

void addAll(K key,
            Collection<? extends V> values)

Add all the values of the given list to the current list of values for the given key.

参数:

key - they key

values - the values to be added

addAll

void addAll(MultiValueMap<K,V> values)

Add all the values of the given MultiValueMap to the current values.

参数:

values - the values to be added

addIfAbsent

void addIfAbsent(K key,
                 @Nullable
                 V value)

Add the given value, only when the map does not contain the given key.

参数:

key - the key

value - the value to be added

set

void set(K key,
         @Nullable
         V value)

Set the given single value under the given key.

参数:

key - the key

value - the value to set

setAll

void setAll(Map<K,V> values)

Set the given values under.

参数:

values - the values.

toSingleValueMap

Map<K,V> toSingleValueMap()

Return a Map with the first values contained in this MultiValueMap.

返回:

a single value representation of this map

toMap

Map<K,List<V>> toMap()

total

int total()