Module id.xfunction

Package id.xfunction.concurrent.flow

Class TransformProcessor<T,R>

Object

SynchronousPublisher<R>

TransformProcessor<T,R>

Type Parameters:

T - input type

R - output type

All Implemented Interfaces:

AutoCloseable, Flow.Processor<T,R>, Flow.Publisher<R>, Flow.Subscriber<T>

public class TransformProcessor<T,R>
extends SynchronousPublisher<R>
implements Flow.Processor<T,R>

Flow.Processor which can be used to transform publisher messages into different type.

Example of transforming integer to String:

 1 -> Publisher -> Transformer (changes to "1") -> Subscriber
 

Constructor Summary

Constructors

Constructor	Description
TransformProcessor(Function<T,Optional<R>> transformer)

Method Summary

Modifier and Type	Method	Description
void	onComplete()
void	onError(Throwable throwable)
void	onNext(T item)
void	onSubscribe(Flow.Subscription subscription)

Methods inherited from class SynchronousPublisher

close, closeExceptionally, submit, subscribe

Methods inherited from class Object

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

Methods inherited from interface Flow.Publisher

subscribe

Constructor Details

TransformProcessor

public TransformProcessor(Function<T,Optional<R>> transformer)

Parameters:

transformer - Transforms input message and publishes it to subscribers. If transformer returns empty message it will be ignored.

Method Details

onSubscribe

public void onSubscribe(Flow.Subscription subscription)

Specified by:

onSubscribe in interface Flow.Subscriber<T>

onNext

public void onNext(T item)

Specified by:

onNext in interface Flow.Subscriber<T>

onError

public void onError(Throwable throwable)

Specified by:

onError in interface Flow.Subscriber<T>

onComplete

public void onComplete()

Specified by:

onComplete in interface Flow.Subscriber<T>