Package ca.uhn.fhir.util

Class MultimapCollector<T,K,V>

java.lang.Object

ca.uhn.fhir.util.MultimapCollector<T,K,V>

All Implemented Interfaces:

Collector<T,com.google.common.collect.ListMultimap<K,V>,com.google.common.collect.ListMultimap<K,V>>

public class MultimapCollector<T,K,V>
extends Object
implements Collector<T,com.google.common.collect.ListMultimap<K,V>,com.google.common.collect.ListMultimap<K,V>>

Copied from https://stackoverflow.com/questions/23003542/cleanest-way-to-create-a-guava-multimap-from-a-java-8-stream

Nested Class Summary

Nested classes/interfaces inherited from interface java.util.stream.Collector

Collector.Characteristics

Constructor Summary

Constructors

Constructor	Description
MultimapCollector(Function<T,K> keyGetter, Function<T,V> valueGetter)

Method Summary

Modifier and Type	Method	Description
BiConsumer<com.google.common.collect.ListMultimap<K,V>,T>	accumulator()
Set<Collector.Characteristics>	characteristics()
BinaryOperator<com.google.common.collect.ListMultimap<K,V>>	combiner()
Function<com.google.common.collect.ListMultimap<K,V>,com.google.common.collect.ListMultimap<K,V>>	finisher()
Supplier<com.google.common.collect.ListMultimap<K,V>>	supplier()
static <T, K, V> MultimapCollector<T,K,T>	toMultimap(Function<T,K> keyGetter)
static <T, K, V> MultimapCollector<T,K,V>	toMultimap(Function<T,K> keyGetter, Function<T,V> valueGetter)

Methods inherited from class java.lang.Object

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

Constructor Details

MultimapCollector

public MultimapCollector(Function<T,K> keyGetter,
 Function<T,V> valueGetter)

Method Details

toMultimap

public static <T,
K,
V> MultimapCollector<T,K,V> toMultimap(Function<T,K> keyGetter,
 Function<T,V> valueGetter)

toMultimap

public static <T,
K,
V> MultimapCollector<T,K,T> toMultimap(Function<T,K> keyGetter)

supplier

public Supplier<com.google.common.collect.ListMultimap<K,V>> supplier()

Specified by:

supplier in interface Collector<T,K,V>

accumulator

public BiConsumer<com.google.common.collect.ListMultimap<K,V>,T> accumulator()

Specified by:

accumulator in interface Collector<T,K,V>

combiner

public BinaryOperator<com.google.common.collect.ListMultimap<K,V>> combiner()

Specified by:

combiner in interface Collector<T,K,V>

finisher

public Function<com.google.common.collect.ListMultimap<K,V>,com.google.common.collect.ListMultimap<K,V>> finisher()

Specified by:

finisher in interface Collector<T,K,V>

characteristics

public Set<Collector.Characteristics> characteristics()

Specified by:

characteristics in interface Collector<T,K,V>