org.mule.runtime.core.api.util.collection

Class Collectors

java.lang.Object

org.mule.runtime.core.api.util.collection.Collectors

public class Collectors
extends Object

Provides different implementations of Collector

Since:

4.0

Method Summary

Modifier and Type	Method and Description
static <T> Collector<T,?,List<T>>	toImmutableList() Returns a Collector that accumulates the input elements into an immutable List.
static <T,K,V> Collector<T,?,Map<K,V>>	toImmutableMap(Function<T,K> keyMapper, Function<T,V> valueMapper) Returns a Collector that accumulates elements into an immutable Map whose keys and values are the result of applying the provided mapping functions to the input elements.
static <T> Collector<T,?,Set<T>>	toImmutableSet() Returns a Collector that accumulates the input elements into an immutable Set.

Methods inherited from class java.lang.Object

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

Method Detail

toImmutableList

public static <T> Collector<T,?,List<T>> toImmutableList()

Returns a Collector that accumulates the input elements into an immutable List.

Type Parameters:

T - the type of the input elements

Returns:

a Collector which collects all the input elements into an immutable List, in encounter order

toImmutableSet

public static <T> Collector<T,?,Set<T>> toImmutableSet()

Returns a Collector that accumulates the input elements into an immutable Set.

Type Parameters:

T - the type of the input elements

Returns:

a Collector which collects all the input elements into an immutable Set, in encounter order

toImmutableMap

public static <T,K,V> Collector<T,?,Map<K,V>> toImmutableMap(Function<T,K> keyMapper,
                                                             Function<T,V> valueMapper)

Returns a Collector that accumulates elements into an immutable Map whose keys and values are the result of applying the provided mapping functions to the input elements.

Type Parameters:

T - the type of the input elements

K - the output type of the key mapping function

U - the output type of the value mapping function

Parameters:

keyMapper - a mapping function to produce keys

valueMapper - a mapping function to produce values

Returns:

a Collector which collects elements into a Map whose keys and values are the result of applying mapping functions to the input elements