no.digipost.collection

Class EnforceAtMostOneElementCollector<T>

java.lang.Object

no.digipost.collection.EnforceAtMostOneElementCollector<T>

All Implemented Interfaces:

Collector<T,OneTimeAssignment<T>,Optional<T>>

public class EnforceAtMostOneElementCollector<T>
extends Object
implements Collector<T,OneTimeAssignment<T>,Optional<T>>

Nested Class Summary

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

Collector.Characteristics

Constructor Summary

Constructors

Constructor and Description
EnforceAtMostOneElementCollector()

Method Summary

Modifier and Type	Method and Description
BiConsumer<OneTimeAssignment<T>,T>	accumulator()
Set<Collector.Characteristics>	characteristics()
BinaryOperator<OneTimeAssignment<T>>	combiner()
Function<OneTimeAssignment<T>,Optional<T>>	finisher()
Supplier<OneTimeAssignment<T>>	supplier()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.stream.Collector

of, of

Constructor Detail

EnforceAtMostOneElementCollector

public EnforceAtMostOneElementCollector()

Method Detail

supplier

public Supplier<OneTimeAssignment<T>> supplier()

Specified by:

supplier in interface Collector<T,OneTimeAssignment<T>,Optional<T>>

accumulator

public BiConsumer<OneTimeAssignment<T>,T> accumulator()

Specified by:

accumulator in interface Collector<T,OneTimeAssignment<T>,Optional<T>>

combiner

public BinaryOperator<OneTimeAssignment<T>> combiner()

Specified by:

combiner in interface Collector<T,OneTimeAssignment<T>,Optional<T>>

finisher

public Function<OneTimeAssignment<T>,Optional<T>> finisher()

Specified by:

finisher in interface Collector<T,OneTimeAssignment<T>,Optional<T>>

characteristics

public Set<Collector.Characteristics> characteristics()

Specified by:

characteristics in interface Collector<T,OneTimeAssignment<T>,Optional<T>>