Top Description Inners Fields Constructors Methods
reactor.core.publisher

pack-priv final Class FluxMergeSequential<T, R>

extends InternalFluxOperator<T, R>
Class Inheritance
Type Parameters
<T>
the source value type
<R>
the output value type
Imports
java.util.Objects, .Queue, java.util.concurrent.atomic.AtomicIntegerFieldUpdater, .AtomicLongFieldUpdater, .AtomicReferenceFieldUpdater, java.util.function.Function, .Supplier, java.util.stream.Stream, org.reactivestreams.Publisher, .Subscriber, .Subscription, reactor.core.CoreSubscriber, .Exceptions, .Fuseable, .Fuseable.QueueSubscription, .Scannable, reactor.core.publisher.FluxConcatMap.ErrorMode, reactor.util.annotation.Nullable, reactor.util.concurrent.Queues, reactor.util.context.Context

Maps each upstream value into a Publisher and concatenates them into one sequence of items.
See Also
Reactive-Streams-Commons

Nested and Inner Type Summary

Modifier and TypeClass and Description
pack-priv static class
FluxMergeSequential.MergeSequentialInner<
the type of objects emitted by the inner flux
R
>

Represents the inner flux in a mergeSequential, that has an internal queue to hold items while they arrive out of order.

pack-priv static class

Field Summary

Modifier and TypeField and Description
pack-priv final FluxConcatMap.ErrorMode
pack-priv final Function<? super T, ? extends Publisher<? extends R>>
pack-priv final int
pack-priv final int
pack-priv final Supplier<Queue<FluxMergeSequential.MergeSequentialInner<R>>>
Inherited from reactor.core.publisher.InternalFluxOperator:
optimizableOperator

Constructor Summary

AccessConstructor and Description
pack-priv
FluxMergeSequential(Flux<? extends T> source, Function<? super T, ? extends Publisher<? extends R>> mapper, int maxConcurrency, int prefetch, FluxConcatMap.ErrorMode errorMode)

pack-priv
FluxMergeSequential(Flux<? extends T> source, Function<? super T, ? extends Publisher<? extends R>> mapper, int maxConcurrency, int prefetch, FluxConcatMap.ErrorMode errorMode, Supplier<Queue<FluxMergeSequential.MergeSequentialInner<R>>> queueSupplier)

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

errorModeback to summary
pack-priv final FluxConcatMap.ErrorMode errorMode
mapperback to summary
pack-priv final Function<? super T, ? extends Publisher<? extends R>> mapper
maxConcurrencyback to summary
pack-priv final int maxConcurrency
prefetchback to summary
pack-priv final int prefetch
queueSupplierback to summary
pack-priv final Supplier<Queue<FluxMergeSequential.MergeSequentialInner<R>>> queueSupplier

Constructor Detail

FluxMergeSequentialback to summary
pack-priv FluxMergeSequential(Flux<? extends T> source, Function<? super T, ? extends Publisher<? extends R>> mapper, int maxConcurrency, int prefetch, FluxConcatMap.ErrorMode errorMode)
FluxMergeSequentialback to summary
pack-priv FluxMergeSequential(Flux<? extends T> source, Function<? super T, ? extends Publisher<? extends R>> mapper, int maxConcurrency, int prefetch, FluxConcatMap.ErrorMode errorMode, Supplier<Queue<FluxMergeSequential.MergeSequentialInner<R>>> queueSupplier)

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 FluxMergeSequential.MergeSequentialInner<R>

extends Object
implements InnerConsumer<R>
Class Inheritance
  • java.lang.Object
  • reactor.core.publisher.FluxMergeSequential.MergeSequentialInner
All Implemented Interfaces
reactor.core.publisher.InnerConsumer, reactor.core.Scannable, reactor.core.CoreSubscriber, org.reactivestreams.Subscriber
Type Parameters
<R>
the type of objects emitted by the inner flux

Represents the inner flux in a mergeSequential, that has an internal queue to hold items while they arrive out of order. The queue is drained as soon as correct order can be restored.

Field Summary

Modifier and TypeField and Description
pack-priv volatile boolean
pack-priv int
pack-priv final int
pack-priv final FluxMergeSequential.MergeSequentialMain<?, R>
pack-priv final int
pack-priv long
pack-priv volatile Queue<R>
pack-priv volatile Subscription
pack-priv static final AtomicReferenceFieldUpdater<FluxMergeSequential.MergeSequentialInner<R>, Subscription>

Constructor Summary

AccessConstructor and Description
pack-priv

Method Summary

Modifier and TypeMethod and Description
pack-priv void
public Context
currentContext()

Overrides default reactor.core.CoreSubscriber.currentContext.

Request a Context from dependent components which can include downstream operators during subscribing or a terminal org.reactivestreams.Subscriber.
pack-priv boolean
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(R
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).
pack-priv Queue<R>
pack-priv void
public Object
scanUnsafe(Scannable.Attr<T>
a Attr to resolve for the component.
key
)

Implements reactor.core.Scannable.scanUnsafe.

This method is used internally by components to define their key-value mappings in a single place.
pack-priv void
Inherited from java.lang.Object:
cloneequalsfinalizegetClasshashCodenotifynotifyAlltoStringwaitwaitwait

Field Detail

doneback to summary
pack-priv volatile boolean done
fusionModeback to summary
pack-priv int fusionMode
limitback to summary
pack-priv final int limit
parentback to summary
pack-priv final FluxMergeSequential.MergeSequentialMain<?, R> parent
prefetchback to summary
pack-priv final int prefetch
producedback to summary
pack-priv long produced
queueback to summary
pack-priv volatile Queue<R> queue
subscriptionback to summary
pack-priv volatile Subscription subscription
SUBSCRIPTIONback to summary
pack-priv static final AtomicReferenceFieldUpdater<FluxMergeSequential.MergeSequentialInner<R>, Subscription> SUBSCRIPTION

Constructor Detail

MergeSequentialInnerback to summary
pack-priv MergeSequentialInner(FluxMergeSequential.MergeSequentialMain<?, R> parent, int prefetch)

Method Detail

cancelback to summary
pack-priv void cancel()
currentContextback to summary
public Context currentContext()

Overrides default reactor.core.CoreSubscriber.currentContext.

Doc from reactor.core.CoreSubscriber.currentContext.

Request a Context from dependent components which can include downstream operators during subscribing or a terminal org.reactivestreams.Subscriber.

Returns:Context

a resolved context or Context#empty()

Annotations
@Override
isDoneback to summary
pack-priv boolean isDone()
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(R 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:R

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
queueback to summary
pack-priv Queue<R> queue()
requestOneback to summary
pack-priv void requestOne()
scanUnsafeback to summary
public Object scanUnsafe(Scannable.Attr<T> key)

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
setDoneback to summary
pack-priv void setDone()
reactor.core.publisher back to summary

pack-priv final Class FluxMergeSequential.MergeSequentialMain<T, R>

extends Object
implements InnerOperator<T, R>
Class Inheritance
  • java.lang.Object
  • reactor.core.publisher.FluxMergeSequential.MergeSequentialMain
All Implemented Interfaces
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 FluxMergeSequential.MergeSequentialInner<R>
pack-priv volatile boolean
pack-priv volatile Throwable
pack-priv static final AtomicReferenceFieldUpdater<FluxMergeSequential.MergeSequentialMain<T, R>, Throwable>
pack-priv final FluxConcatMap.ErrorMode
errorMode

whether or not errors should be delayed until the very end of all inner publishers or just until the completion of the currently merged inner publisher

pack-priv final Function<? super T, ? extends Publisher<? extends R>>
mapper

the mapper giving the inner publisher for each source value

pack-priv final int
maxConcurrency

how many eagerly subscribed inner stream at a time, at most

pack-priv final int
prefetch

request size for inner subscribers (size of the inner queues)

pack-priv volatile long
pack-priv static final AtomicLongFieldUpdater<FluxMergeSequential.MergeSequentialMain<T, R>>
pack-priv Subscription
s

pack-priv final Queue<FluxMergeSequential.MergeSequentialInner<R>>
pack-priv volatile int
wip

guard against multiple threads entering the drain loop.

pack-priv static final AtomicIntegerFieldUpdater<FluxMergeSequential.MergeSequentialMain<T, R>>

Constructor Summary

AccessConstructor and Description
pack-priv
MergeSequentialMain(CoreSubscriber<? super R> actual, Function<? super T, ? extends Publisher<? extends R>> mapper, int maxConcurrency, int prefetch, FluxConcatMap.ErrorMode errorMode, Supplier<Queue<FluxMergeSequential.MergeSequentialInner<R>>> queueSupplier)

Method Summary

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

Implements org.reactivestreams.Subscription.cancel.

Request the Publisher to stop sending data and clean up resources.
pack-priv void
pack-priv void
pack-priv void
pack-priv void
pack-priv void
pack-priv void
public Stream<? extends Scannable>
inners()

Overrides default reactor.core.Scannable.inners.

Return a Stream of referenced inners (flatmap, multicast etc)
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 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.
Inherited from java.lang.Object:
cloneequalsfinalizegetClasshashCodenotifynotifyAlltoStringwaitwaitwait

Field Detail

actualback to summary
pack-priv final CoreSubscriber<? super R> actual
cancelledback to summary
pack-priv volatile boolean cancelled
currentback to summary
pack-priv FluxMergeSequential.MergeSequentialInner<R> current
doneback to summary
pack-priv volatile boolean done
errorback to summary
pack-priv volatile Throwable error
ERRORback to summary
pack-priv static final AtomicReferenceFieldUpdater<FluxMergeSequential.MergeSequentialMain<T, R>, Throwable> ERROR
errorModeback to summary
pack-priv final FluxConcatMap.ErrorMode errorMode

whether or not errors should be delayed until the very end of all inner publishers or just until the completion of the currently merged inner publisher

mapperback to summary
pack-priv final Function<? super T, ? extends Publisher<? extends R>> mapper

the mapper giving the inner publisher for each source value

maxConcurrencyback to summary
pack-priv final int maxConcurrency

how many eagerly subscribed inner stream at a time, at most

prefetchback to summary
pack-priv final int prefetch

request size for inner subscribers (size of the inner queues)

requestedback to summary
pack-priv volatile long requested
REQUESTEDback to summary
pack-priv static final AtomicLongFieldUpdater<FluxMergeSequential.MergeSequentialMain<T, R>> REQUESTED
sback to summary
pack-priv Subscription s
subscribersback to summary
pack-priv final Queue<FluxMergeSequential.MergeSequentialInner<R>> subscribers
wipback to summary
pack-priv volatile int wip

guard against multiple threads entering the drain loop. allows thread stealing by continuing the loop if wip has been incremented externally by a separate thread.

WIPback to summary
pack-priv static final AtomicIntegerFieldUpdater<FluxMergeSequential.MergeSequentialMain<T, R>> WIP

Constructor Detail

MergeSequentialMainback to summary
pack-priv MergeSequentialMain(CoreSubscriber<? super R> actual, Function<? super T, ? extends Publisher<? extends R>> mapper, int maxConcurrency, int prefetch, FluxConcatMap.ErrorMode errorMode, Supplier<Queue<FluxMergeSequential.MergeSequentialInner<R>>> queueSupplier)

Method Detail

actualback to summary
public final 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
cancelAllback to summary
pack-priv void cancelAll()
drainback to summary
pack-priv void drain()
drainAndCancelback to summary
pack-priv void drainAndCancel()
innerCompleteback to summary
pack-priv void innerComplete(FluxMergeSequential.MergeSequentialInner<R> inner)
innerErrorback to summary
pack-priv void innerError(FluxMergeSequential.MergeSequentialInner<R> inner, Throwable e)
innerNextback to summary
pack-priv void innerNext(FluxMergeSequential.MergeSequentialInner<R> inner, R value)
innersback to summary
public Stream<? extends Scannable> inners()

Overrides default reactor.core.Scannable.inners.

Doc from reactor.core.Scannable.inners.

Return a Stream of referenced inners (flatmap, multicast etc)

Returns:Stream<? extends Scannable>

a Stream of referenced inners (flatmap, multicast etc)

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
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