Module net.pincette.rs

Package net.pincette.rs

Class Mapper<T,R>

java.lang.Object

net.pincette.rs.ProcessorBase<T,R>

net.pincette.rs.Mapper<T,R>

Type Parameters:

T - the type of the incoming values.

R - the type of the outgoing values.

All Implemented Interfaces:

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

Direct Known Subclasses:

After, Before, Filter, HeadTail, NotFilter, PassThrough, Separator

public class Mapper<T,R>
extends ProcessorBase<T,R>

Transforms a reactive stream. Null values are neither processed nor emitted.

Since:

1.0

Author:

Werner Donné

Field Summary

Fields inherited from class net.pincette.rs.ProcessorBase

subscriber, subscription

Constructor Summary

Constructors

Constructor	Description
Mapper(Function<T,R> map)

Method Summary

Modifier and Type	Method	Description
protected boolean	canRequestMore(long number)	With this method a subclass can regulate the backpressure.
protected void	emit(long number)
static <T, R> Flow.Processor<T,R>	map(Function<T,R> map)	Returns a mapping processor with a map function.
protected void	more()	Request one more element from the upstream.
protected void	more(long number)	Request more elements from the upstream.
void	onNext(T value)

Methods inherited from class net.pincette.rs.ProcessorBase

cancel, complete, getError, onComplete, onError, onSubscribe, setError, subscribe

Methods inherited from class java.lang.Object

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

Constructor Details

Mapper

public Mapper(Function<T,R> map)

Method Details

map

public static <T,
R> Flow.Processor<T,R> map(Function<T,R> map)

Returns a mapping processor with a map function.

Type Parameters:

T - the type of the incoming values.

R - the type of the outgoing values.

Parameters:

map - the map function.

Returns:

The processor.

Since:

3.0

canRequestMore

protected boolean canRequestMore(long number)

With this method a subclass can regulate the backpressure.

Parameters:

number - the strictly positive number of elements.

Returns:

true

Since:

1.6

emit

protected void emit(long number)

Specified by:

emit in class ProcessorBase<T,R>

more

protected void more()

Request one more element from the upstream.

Since:

1.4

more

protected void more(long number)

Request more elements from the upstream. This will only have an effect when the stream is not in an error state.

Parameters:

number - the strictly positive number of elements.

Since:

1.4

onNext

public void onNext(T value)