Interface TwoStepMapper.Combineable<T, R, A extends TwoStepMapper.Combineable<T,R,A>>

All Superinterfaces:

TwoStepMapper<T,R>

All Known Implementing Classes:

SampleSet.CombineableSet, TwoStepMapper.KeyCounter, TwoStepMapper.SimpleCache

Enclosing interface:

TwoStepMapper<T,R>

public static interface TwoStepMapper.Combineable<T, R, A extends TwoStepMapper.Combineable<T,R,A>>
extends TwoStepMapper<T,R>

Enables combining the state of multiple instances.

Nested Class Summary

Nested classes/interfaces inherited from interface TwoStepMapper

TwoStepMapper.Combineable<T,R,A>, TwoStepMapper.KeyCounter<T,G>, TwoStepMapper.Mergeable<T,R>, TwoStepMapper.SimpleCache<K,V>

Method Summary

Modifier and Type	Method	Description
void	combine(A other)	This method can be used to combine the state of multiple instances.
static <T, R, A extends TwoStepMapper.Combineable<T,R,A>> A	combine2(A target, A other)
static <T, R, A extends TwoStepMapper.Combineable<T,R,A>> Collector<T,A,R>	newCollector(Supplier<A> supplier)	Create a new Collector that can be used with Stream.collect(Collector).

Methods inherited from interface TwoStepMapper

consume, getResults, reset

Method Details

combine2

static <T, R, A extends TwoStepMapper.Combineable<T,R,A>>
A combine2(A target,
 A other)

newCollector

static <T, R, A extends TwoStepMapper.Combineable<T,R,A>>
Collector<T,A,R> newCollector(Supplier<A> supplier)

Create a new Collector that can be used with Stream.collect(Collector). Just provide a constructor or factory method reference to create instances of a TwoStepMapper.Combineable implementation.

combine

void combine(A other)

This method can be used to combine the state of multiple instances. The intermediate/internal state from one instance is combined into another.