Top Description Inners Fields Constructors Methods
reactor.core.publisher

pack-priv final Class FluxExpand<T>

extends InternalFluxOperator<T, T>
Class Inheritance
Imports
java.util.ArrayDeque, .Deque, .Objects, .Queue, java.util.concurrent.atomic.AtomicIntegerFieldUpdater, .AtomicLongFieldUpdater, .AtomicReferenceFieldUpdater, java.util.function.Function, org.reactivestreams.Publisher, .Subscriber, .Subscription, reactor.core.CorePublisher, .CoreSubscriber, .Exceptions, reactor.util.annotation.Nullable, reactor.util.concurrent.Queues, reactor.util.context.Context

A Flux that emits items from upstream and recursively expand them into inner sequences that are also replayed. The type of recursion is driven by the breadthFirst parameter.
Authors
David Karnok, Simon Baslé

Nested and Inner Type Summary

Modifier and TypeClass and Description
pack-priv static class
pack-priv static class
pack-priv static class

Field Summary

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

Constructor Summary

AccessConstructor and Description
pack-priv
FluxExpand(Flux<T> source, Function<? super T, ? extends Publisher<? extends T>> expander, boolean breadthFirst, int capacityHint)

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 T> s)

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

breadthFirstback to summary
pack-priv final boolean breadthFirst
capacityHintback to summary
pack-priv final int capacityHint
expanderback to summary
pack-priv final Function<? super T, ? extends Publisher<? extends T>> expander

Constructor Detail

FluxExpandback to summary
pack-priv FluxExpand(Flux<T> source, Function<? super T, ? extends Publisher<? extends T>> expander, boolean breadthFirst, int capacityHint)

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 T> s)

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 FluxExpand.ExpandBreathSubscriber<T>

extends Operators.MultiSubscriptionSubscriber<T, T>
Class Inheritance

Field Summary

Modifier and TypeField and Description
pack-priv volatile boolean
pack-priv final Function<? super T, ? extends Publisher<? extends T>>
pack-priv long
pack-priv final Queue<Publisher<? extends T>>
pack-priv volatile int
pack-priv static final AtomicIntegerFieldUpdater<FluxExpand.ExpandBreathSubscriber<T>>
Inherited from reactor.core.publisher.Operators.MultiSubscriptionSubscriber:
actualcancelledMISSED_PRODUCEDMISSED_REQUESTEDMISSED_SUBSCRIPTIONmissedProducedmissedRequestedmissedSubscriptionrequestedsubscriptionunbounded

Constructor Summary

AccessConstructor and Description
pack-priv
ExpandBreathSubscriber(CoreSubscriber<? super T> actual, Function<? super T, ? extends Publisher<? extends T>> expander, int capacityHint)

Method Summary

Modifier and TypeMethod and Description
public void
cancel()

Overrides reactor.core.publisher.Operators.MultiSubscriptionSubscriber.cancel.

Implements org.reactivestreams.Subscription.cancel.

Request the Publisher to stop sending data and clean up resources.
pack-priv void
public void
public void
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
public Object
scanUnsafe(Scannable.Attr<T>
a Attr to resolve for the component.
key
)

Overrides reactor.core.publisher.Operators.MultiSubscriptionSubscriber.scanUnsafe.

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 reactor.core.publisher.Operators.MultiSubscriptionSubscriber:
actualdraindrainLoopisCancelledisUnboundedproducedproducedOnerequestsetshouldCancelCurrent

Field Detail

activeback to summary
pack-priv volatile boolean active
expanderback to summary
pack-priv final Function<? super T, ? extends Publisher<? extends T>> expander
producedback to summary
pack-priv long produced
queueback to summary
pack-priv final Queue<Publisher<? extends T>> queue
wipback to summary
pack-priv volatile int wip

Hides reactor.core.publisher.Operators.MultiSubscriptionSubscriber.wip.

WIPback to summary
pack-priv static final AtomicIntegerFieldUpdater<FluxExpand.ExpandBreathSubscriber<T>> WIP

Hides reactor.core.publisher.Operators.MultiSubscriptionSubscriber.WIP.

Constructor Detail

ExpandBreathSubscriberback to summary
pack-priv ExpandBreathSubscriber(CoreSubscriber<? super T> actual, Function<? super T, ? extends Publisher<? extends T>> expander, int capacityHint)

Method Detail

cancelback to summary
public void cancel()

Overrides reactor.core.publisher.Operators.MultiSubscriptionSubscriber.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
drainQueueback to summary
pack-priv void drainQueue()
onCompleteback to summary
public void onComplete()

Overrides reactor.core.publisher.Operators.MultiSubscriptionSubscriber.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)

Overrides reactor.core.publisher.Operators.MultiSubscriptionSubscriber.onError.

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)

Overrides reactor.core.publisher.Operators.MultiSubscriptionSubscriber.onSubscribe.

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

Overrides reactor.core.publisher.Operators.MultiSubscriptionSubscriber.scanUnsafe.

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
@Nullable
@Override
reactor.core.publisher back to summary

pack-priv final Class FluxExpand.ExpandDepthSubscriber<T>

extends Object
implements InnerConsumer<T>
Class Inheritance
All Implemented Interfaces
reactor.core.publisher.InnerConsumer, reactor.core.Scannable, reactor.core.CoreSubscriber, org.reactivestreams.Subscriber

Field Summary

Modifier and TypeField and Description
pack-priv volatile boolean
pack-priv FluxExpand.ExpandDepthSubscription<T>
pack-priv volatile Subscription
s

pack-priv static final AtomicReferenceFieldUpdater<FluxExpand.ExpandDepthSubscriber<T>, Subscription>
S

pack-priv volatile T

Constructor Summary

AccessConstructor and Description
pack-priv

Method Summary

Modifier and TypeMethod and Description
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 void
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).
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.
Inherited from java.lang.Object:
cloneequalsfinalizegetClasshashCodenotifynotifyAlltoStringwaitwaitwait

Field Detail

doneback to summary
pack-priv volatile boolean done
parentback to summary
pack-priv FluxExpand.ExpandDepthSubscription<T> parent
sback to summary
pack-priv volatile Subscription s
Sback to summary
pack-priv static final AtomicReferenceFieldUpdater<FluxExpand.ExpandDepthSubscriber<T>, Subscription> S
valueback to summary
pack-priv volatile T value

Constructor Detail

ExpandDepthSubscriberback to summary
pack-priv ExpandDepthSubscriber(FluxExpand.ExpandDepthSubscription<T> parent)

Method Detail

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
disposeback to summary
pack-priv void dispose()
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
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
@Nullable
@Override
reactor.core.publisher back to summary

pack-priv final Class FluxExpand.ExpandDepthSubscription<T>

extends Object
implements InnerProducer<T>
Class Inheritance
All Implemented Interfaces
reactor.core.publisher.InnerProducer, org.reactivestreams.Subscription, reactor.core.Scannable

Field Summary

Modifier and TypeField and Description
pack-priv volatile int
pack-priv static final AtomicIntegerFieldUpdater<FluxExpand.ExpandDepthSubscription<T>>
pack-priv final CoreSubscriber<? super T>
pack-priv volatile boolean
pack-priv long
pack-priv volatile Object
pack-priv static final AtomicReferenceFieldUpdater<FluxExpand.ExpandDepthSubscription<T>, Object>
pack-priv volatile Throwable
pack-priv static final AtomicReferenceFieldUpdater<FluxExpand.ExpandDepthSubscription<T>, Throwable>
pack-priv final Function<? super T, ? extends Publisher<? extends T>>
pack-priv volatile long
pack-priv static final AtomicLongFieldUpdater<FluxExpand.ExpandDepthSubscription<T>>
pack-priv CorePublisher<? extends T>
pack-priv Deque<FluxExpand.ExpandDepthSubscriber<T>>
pack-priv volatile int
pack-priv static final AtomicIntegerFieldUpdater<FluxExpand.ExpandDepthSubscription<T>>

Constructor Summary

AccessConstructor and Description
pack-priv
ExpandDepthSubscription(CoreSubscriber<? super T> actual, Function<? super T, ? extends Publisher<? extends T>> expander, int capacityHint)

Method Summary

Modifier and TypeMethod and Description
public CoreSubscriber<? super T>
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 FluxExpand.ExpandDepthSubscriber<T>
pop()

pack-priv boolean
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.

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

Field Detail

activeback to summary
pack-priv volatile int active
ACTIVEback to summary
pack-priv static final AtomicIntegerFieldUpdater<FluxExpand.ExpandDepthSubscription<T>> ACTIVE
actualback to summary
pack-priv final CoreSubscriber<? super T> actual
cancelledback to summary
pack-priv volatile boolean cancelled
consumedback to summary
pack-priv long consumed
currentback to summary
pack-priv volatile Object current
CURRENTback to summary
pack-priv static final AtomicReferenceFieldUpdater<FluxExpand.ExpandDepthSubscription<T>, Object> CURRENT
errorback to summary
pack-priv volatile Throwable error
ERRORback to summary
pack-priv static final AtomicReferenceFieldUpdater<FluxExpand.ExpandDepthSubscription<T>, Throwable> ERROR
expanderback to summary
pack-priv final Function<? super T, ? extends Publisher<? extends T>> expander
requestedback to summary
pack-priv volatile long requested
REQUESTEDback to summary
pack-priv static final AtomicLongFieldUpdater<FluxExpand.ExpandDepthSubscription<T>> REQUESTED
sourceback to summary
pack-priv CorePublisher<? extends T> source
subscriptionStackback to summary
pack-priv Deque<FluxExpand.ExpandDepthSubscriber<T>> subscriptionStack
wipback to summary
pack-priv volatile int wip
WIPback to summary
pack-priv static final AtomicIntegerFieldUpdater<FluxExpand.ExpandDepthSubscription<T>> WIP

Constructor Detail

ExpandDepthSubscriptionback to summary
pack-priv ExpandDepthSubscription(CoreSubscriber<? super T> actual, Function<? super T, ? extends Publisher<? extends T>> expander, int capacityHint)

Method Detail

actualback to summary
public CoreSubscriber<? super T> 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
@SuppressWarnings:unchecked
@Override
drainQueueback to summary
pack-priv void drainQueue()
innerCompleteback to summary
pack-priv void innerComplete(FluxExpand.ExpandDepthSubscriber<T> inner)
innerErrorback to summary
pack-priv void innerError(FluxExpand.ExpandDepthSubscriber<T> inner, Throwable t)
innerNextback to summary
pack-priv void innerNext()
popback to summary
pack-priv FluxExpand.ExpandDepthSubscriber<T> pop()
Annotations
@Nullable
pushback to summary
pack-priv boolean push(FluxExpand.ExpandDepthSubscriber<T> subscriber)
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.

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
@Nullable
@Override
setCurrentback to summary
pack-priv boolean setCurrent(FluxExpand.ExpandDepthSubscriber<T> inner)