Top Description Inners Fields Constructors Methods
reactor.core.publisher

pack-priv final Class FluxMapSignal<T, R>

extends InternalFluxOperator<T, R>
Class Inheritance
Type Parameters
<T>
the source value type
<R>
the result value type
Imports
java.util.AbstractQueue, .Iterator, .Objects, java.util.concurrent.atomic.AtomicLongFieldUpdater, java.util.function.BooleanSupplier, .Function, .Supplier, org.reactivestreams.Subscription, reactor.core.CoreSubscriber, reactor.util.annotation.Nullable

Maps the values of the source publisher one-on-one via a mapper function.
Author
Stephane Maldini

Nested and Inner Type Summary

Modifier and TypeClass and Description
pack-priv static class

Field Summary

Modifier and TypeField and Description
pack-priv final Supplier<? extends R>
pack-priv final Function<? super Throwable, ? extends R>
pack-priv final Function<? super T, ? extends R>
Inherited from reactor.core.publisher.InternalFluxOperator:
optimizableOperator

Constructor Summary

AccessConstructor and Description
pack-priv
FluxMapSignal(Flux<? extends T>
the source Publisher instance
source
,
Function<? super T, ? extends R>
the next mapper function
mapperNext
,
Function<? super Throwable, ? extends R>
the error mapper function
mapperError
,
Supplier<? extends R>
the complete mapper function
mapperComplete
)

Constructs a FluxMapSignal instance with the given source and mappers.

Method Summary

Modifier and TypeMethod and Description
public Object
scanUnsafe(Scannable.Attr<T>
a Attr to resolve for the component.
key
)

Overrides reactor.core.publisher.InternalFluxOperator.scanUnsafe.

Implements reactor.core.Scannable.scanUnsafe.

This method is used internally by components to define their key-value mappings in a single place.
public CoreSubscriber<? super T>
subscribeOrReturn(CoreSubscriber<? super R> actual)

Implements abstract reactor.core.publisher.InternalFluxOperator.subscribeOrReturn.

Implements reactor.core.publisher.OptimizableOperator.subscribeOrReturn.

Allow delegation of the subscription by returning a CoreSubscriber, or force subscription encapsulation by returning null.
Inherited from reactor.core.publisher.InternalFluxOperator:
nextOptimizableSourcesourcesubscribe

Field Detail

mapperCompleteback to summary
pack-priv final Supplier<? extends R> mapperComplete
mapperErrorback to summary
pack-priv final Function<? super Throwable, ? extends R> mapperError
mapperNextback to summary
pack-priv final Function<? super T, ? extends R> mapperNext

Constructor Detail

FluxMapSignalback to summary
pack-priv FluxMapSignal(Flux<? extends T> source, Function<? super T, ? extends R> mapperNext, Function<? super Throwable, ? extends R> mapperError, Supplier<? extends R> mapperComplete)

Constructs a FluxMapSignal instance with the given source and mappers.

Parameters
source:Flux<? extends T>

the source Publisher instance

mapperNext:Function<? super T, ? extends R>

the next mapper function

mapperError:Function<? super Throwable, ? extends R>

the error mapper function

mapperComplete:Supplier<? extends R>

the complete mapper function

Exceptions
NullPointerException:
if either source is null or all mapper are null.

Method Detail

scanUnsafeback to summary
public Object scanUnsafe(Scannable.Attr<T> key)

Overrides reactor.core.publisher.InternalFluxOperator.scanUnsafe.

Implements reactor.core.Scannable.scanUnsafe.

Doc from reactor.core.Scannable.scanUnsafe.

This method is used internally by components to define their key-value mappings in a single place. Although it is ignoring the generic type of the Attr key, implementors should take care to return values of the correct type, and return null if no specific value is available.

For public consumption of attributes, prefer using scan(Attr), which will return a typed value and fall back to the key's default if the component didn't define any mapping.

Parameters
key:Scannable.Attr<T>

a Attr to resolve for the component.

Returns:Object

the value associated to the key for that specific component, or null if none.

Annotations
@Override
subscribeOrReturnback to summary
public CoreSubscriber<? super T> subscribeOrReturn(CoreSubscriber<? super R> actual)

Implements abstract reactor.core.publisher.InternalFluxOperator.subscribeOrReturn.

Implements reactor.core.publisher.OptimizableOperator.subscribeOrReturn.

Doc from reactor.core.publisher.OptimizableOperator.subscribeOrReturn.

Allow delegation of the subscription by returning a CoreSubscriber, or force subscription encapsulation by returning null. This can be used in conjunction with nextOptimizableSource() to perform subscription in a loop instead of by recursion.

Returns:CoreSubscriber<? super T>

next CoreSubscriber or "null" if the subscription was already done inside the method

Annotations
@Override
reactor.core.publisher back to summary

pack-priv final Class FluxMapSignal.FluxMapSignalSubscriber<T, R>

extends AbstractQueue<R>
implements InnerOperator<T, R>, BooleanSupplier
Class Inheritance
All Implemented Interfaces
java.util.function.BooleanSupplier, reactor.core.publisher.InnerOperator, reactor.core.publisher.InnerProducer, org.reactivestreams.Subscription, reactor.core.Scannable, reactor.core.publisher.InnerConsumer, reactor.core.CoreSubscriber, org.reactivestreams.Subscriber

Field Summary

Modifier and TypeField and Description
pack-priv final CoreSubscriber<? super R>
pack-priv volatile boolean
pack-priv boolean
pack-priv final Supplier<? extends R>
pack-priv final Function<? super Throwable, ? extends R>
pack-priv final Function<? super T, ? extends R>
pack-priv long
pack-priv volatile long
pack-priv static final AtomicLongFieldUpdater<FluxMapSignal.FluxMapSignalSubscriber<T, R>>
pack-priv Subscription
s

pack-priv R

Constructor Summary

AccessConstructor and Description
pack-priv
FluxMapSignalSubscriber(CoreSubscriber<? super R> actual, Function<? super T, ? extends R> mapperNext, Function<? super Throwable, ? extends R> mapperError, Supplier<? extends R> mapperComplete)

Method Summary

Modifier and TypeMethod and Description
public CoreSubscriber<? super R>
public void
cancel()

Implements org.reactivestreams.Subscription.cancel.

Request the Publisher to stop sending data and clean up resources.
public boolean
public Iterator<R>
iterator()

Implements abstract java.util.AbstractCollection.iterator.

Implements java.util.Collection.iterator.

Returns an iterator over the elements in this collection.
public boolean
offer(R
the element to add
e
)

Implements java.util.Queue.offer.

Inserts the specified element into this queue if it is possible to do so immediately without violating capacity restrictions.
public void
onComplete()

Implements org.reactivestreams.Subscriber.onComplete.

Successful terminal state.
public void
onError(Throwable
the throwable signaled
t
)

Implements org.reactivestreams.Subscriber.onError.

Failed terminal state.
public void
onNext(T
the element signaled
t
)

Implements org.reactivestreams.Subscriber.onNext.

Data notification sent by the Publisher in response to requests to Subscription#request(long).
public void
onSubscribe(Subscription
the Subscription that allows requesting data via Subscription#request(long)
s
)

Implements reactor.core.CoreSubscriber.onSubscribe.

Implementors should initialize any state used by onNext(Object) before calling Subscription#request(long).
public R
peek()

Implements java.util.Queue.peek.

Retrieves, but does not remove, the head of this queue, or returns null if this queue is empty.
public R
poll()

Implements java.util.Queue.poll.

Retrieves and removes the head of this queue, or returns null if this queue is empty.
public void
request(long
the strictly positive number of elements to requests to the upstream Publisher
n
)

Implements org.reactivestreams.Subscription.request.

No events will be sent by a Publisher until demand is signaled via this method.
public Object
scanUnsafe(Scannable.Attr<T>
a Attr to resolve for the component.
key
)

Overrides default reactor.core.publisher.InnerProducer.scanUnsafe.

Implements reactor.core.Scannable.scanUnsafe.

This method is used internally by components to define their key-value mappings in a single place.
public int
size()

Implements abstract java.util.AbstractCollection.size.

Implements java.util.Collection.size.

Returns the number of elements in this collection.
Inherited from java.util.AbstractQueue:
addaddAllclearelementremove

Field Detail

actualback to summary
pack-priv final CoreSubscriber<? super R> actual
cancelledback to summary
pack-priv volatile boolean cancelled
doneback to summary
pack-priv boolean done
mapperCompleteback to summary
pack-priv final Supplier<? extends R> mapperComplete
mapperErrorback to summary
pack-priv final Function<? super Throwable, ? extends R> mapperError
mapperNextback to summary
pack-priv final Function<? super T, ? extends R> mapperNext
producedback to summary
pack-priv long produced
requestedback to summary
pack-priv volatile long requested
REQUESTEDback to summary
pack-priv static final AtomicLongFieldUpdater<FluxMapSignal.FluxMapSignalSubscriber<T, R>> REQUESTED
Annotations
@SuppressWarnings:rawtypes
sback to summary
pack-priv Subscription s
valueback to summary
pack-priv R value

Constructor Detail

FluxMapSignalSubscriberback to summary
pack-priv FluxMapSignalSubscriber(CoreSubscriber<? super R> actual, Function<? super T, ? extends R> mapperNext, Function<? super Throwable, ? extends R> mapperError, Supplier<? extends R> mapperComplete)

Method Detail

actualback to summary
public CoreSubscriber<? super R> actual()

Implements reactor.core.publisher.InnerProducer.actual.

Annotations
@Override
cancelback to summary
public void cancel()

Implements org.reactivestreams.Subscription.cancel.

Doc from org.reactivestreams.Subscription.cancel.

Request the Publisher to stop sending data and clean up resources.

Data may still be sent to meet previously signalled demand after calling cancel.

Annotations
@Override
getAsBooleanback to summary
public boolean getAsBoolean()

Implements java.util.function.BooleanSupplier.getAsBoolean.

Doc from java.util.function.BooleanSupplier.getAsBoolean.

Gets a result.

Returns:boolean

a result

Annotations
@Override
iteratorback to summary
public Iterator<R> iterator()

Implements abstract java.util.AbstractCollection.iterator.

Implements java.util.Collection.iterator.

Doc from java.util.Collection.iterator.

Returns an iterator over the elements in this collection. There are no guarantees concerning the order in which the elements are returned (unless this collection is an instance of some class that provides a guarantee).

Returns:Iterator<R>

an Iterator over the elements in this collection

Annotations
@Override
offerback to summary
public boolean offer(R e)

Implements java.util.Queue.offer.

Doc from java.util.Queue.offer.

Inserts the specified element into this queue if it is possible to do so immediately without violating capacity restrictions. When using a capacity-restricted queue, this method is generally preferable to add, which can fail to insert an element only by throwing an exception.

Parameters
e:R

the element to add

Returns:boolean

true if the element was added to this queue, else false

Annotations
@Override
onCompleteback to summary
public void onComplete()

Implements org.reactivestreams.Subscriber.onComplete.

Doc from org.reactivestreams.Subscriber.onComplete.

Successful terminal state.

No further events will be sent even if Subscription#request(long) is invoked again.

Annotations
@Override
onErrorback to summary
public void onError(Throwable t)

Implements org.reactivestreams.Subscriber.onError.

Doc from org.reactivestreams.Subscriber.onError.

Failed terminal state.

No further events will be sent even if Subscription#request(long) is invoked again.

Parameters
t:Throwable

the throwable signaled

Annotations
@Override
onNextback to summary
public void onNext(T t)

Implements org.reactivestreams.Subscriber.onNext.

Doc from org.reactivestreams.Subscriber.onNext.

Data notification sent by the Publisher in response to requests to Subscription#request(long).

Parameters
t:T

the element signaled

Annotations
@Override
onSubscribeback to summary
public void onSubscribe(Subscription s)

Implements reactor.core.CoreSubscriber.onSubscribe.

Doc from reactor.core.CoreSubscriber.onSubscribe.

Implementors should initialize any state used by onNext(Object) before calling Subscription#request(long). Should further onNext related state modification occur, thread-safety will be required.

Note that an invalid request <= 0 will not produce an onError and will simply be ignored or reported through a debug-enabled reactor.util.Logger. Invoked after calling Publisher#subscribe(Subscriber).

No data will start flowing until Subscription#request(long) is invoked.

It is the responsibility of this Subscriber instance to call Subscription#request(long) whenever more data is wanted.

The Publisher will send notifications only in response to Subscription#request(long).

Parameters
s:Subscription

Doc from org.reactivestreams.Subscriber.onSubscribe.

the Subscription that allows requesting data via Subscription#request(long)

Annotations
@Override
peekback to summary
public R peek()

Implements java.util.Queue.peek.

Doc from java.util.Queue.peek.

Retrieves, but does not remove, the head of this queue, or returns null if this queue is empty.

Returns:R

the head of this queue, or null if this queue is empty

Annotations
@Override
@Nullable
pollback to summary
public R poll()

Implements java.util.Queue.poll.

Doc from java.util.Queue.poll.

Retrieves and removes the head of this queue, or returns null if this queue is empty.

Returns:R

the head of this queue, or null if this queue is empty

Annotations
@Override
@Nullable
requestback to summary
public void request(long n)

Implements org.reactivestreams.Subscription.request.

Doc from org.reactivestreams.Subscription.request.

No events will be sent by a Publisher until demand is signaled via this method.

It can be called however often and whenever needed—but if the outstanding cumulative demand ever becomes Long.MAX_VALUE or more, it may be treated by the Publisher as "effectively unbounded".

Whatever has been requested can be sent by the Publisher so only signal demand for what can be safely handled.

A Publisher can send less than is requested if the stream ends but then must emit either Subscriber#onError(Throwable) or Subscriber#onComplete().

Parameters
n:long

the strictly positive number of elements to requests to the upstream Publisher

Annotations
@Override
scanUnsafeback to summary
public Object scanUnsafe(Scannable.Attr<T> key)

Overrides default reactor.core.publisher.InnerProducer.scanUnsafe.

Implements reactor.core.Scannable.scanUnsafe.

Doc from reactor.core.Scannable.scanUnsafe.

This method is used internally by components to define their key-value mappings in a single place. Although it is ignoring the generic type of the Attr key, implementors should take care to return values of the correct type, and return null if no specific value is available.

For public consumption of attributes, prefer using scan(Attr), which will return a typed value and fall back to the key's default if the component didn't define any mapping.

Parameters
key:Scannable.Attr<T>

a Attr to resolve for the component.

Returns:Object

the value associated to the key for that specific component, or null if none.

Annotations
@Override
@Nullable
sizeback to summary
public int size()

Implements abstract java.util.AbstractCollection.size.

Implements java.util.Collection.size.

Doc from java.util.Collection.size.

Returns the number of elements in this collection. If this collection contains more than Integer.MAX_VALUE elements, returns Integer.MAX_VALUE.

Returns:int

the number of elements in this collection

Annotations
@Override