Top Description Inners Fields Constructors Methods
reactor.core.publisher

pack-priv final Class ParallelMergeReduce<T>

extends Mono<T>
implements Scannable, Fuseable
Class Inheritance
All Implemented Interfaces
reactor.core.Fuseable, reactor.core.Scannable
Type Parameters
<T>
the value type
Imports
java.util.Objects, java.util.concurrent.atomic.AtomicIntegerFieldUpdater, .AtomicReferenceFieldUpdater, java.util.function.BiFunction, org.reactivestreams.Subscription, reactor.core.CoreSubscriber, .Fuseable, .Scannable, reactor.util.annotation.Nullable, reactor.util.context.Context

Reduces all 'rails' into a single value which then gets reduced into a single Publisher sequence.

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 BiFunction<T, T, T>
pack-priv final ParallelFlux<? extends T>
Inherited from reactor.core.publisher.Mono:
EQUALS_BIPREDICATE

Constructor Summary

AccessConstructor and Description
pack-priv
ParallelMergeReduce(ParallelFlux<? extends T> source, BiFunction<T, T, T> reducer)

Method Summary

Modifier and TypeMethod and Description
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.
public void
subscribe(CoreSubscriber<? super T>
the Subscriber interested into the published sequence
actual
)

Implements abstract reactor.core.publisher.Mono.subscribe.

Implements reactor.core.CorePublisher.subscribe.

An internal Publisher#subscribe(Subscriber) that will bypass Hooks#onLastOperator(Function) pointcut.
Inherited from reactor.core.publisher.Mono:
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Field Detail

reducerback to summary
pack-priv final BiFunction<T, T, T> reducer
sourceback to summary
pack-priv final ParallelFlux<? extends T> source

Constructor Detail

ParallelMergeReduceback to summary
pack-priv ParallelMergeReduce(ParallelFlux<? extends T> source, BiFunction<T, T, T> reducer)

Method Detail

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
subscribeback to summary
public void subscribe(CoreSubscriber<? super T> actual)

Implements abstract reactor.core.publisher.Mono.subscribe.

Implements reactor.core.CorePublisher.subscribe.

Doc from reactor.core.publisher.Mono.subscribe.

An internal Publisher#subscribe(Subscriber) that will bypass Hooks#onLastOperator(Function) pointcut.

In addition to behave as expected by Publisher#subscribe(Subscriber) in a controlled manner, it supports direct subscribe-time Context passing.

Parameters
actual:CoreSubscriber<? super T>

the Subscriber interested into the published sequence

Annotations
@Override
reactor.core.publisher back to summary

pack-priv final Class ParallelMergeReduce.MergeReduceInner<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 boolean
pack-priv final ParallelMergeReduce.MergeReduceMain<T>
pack-priv final BiFunction<T, T, T>
pack-priv volatile Subscription
s

pack-priv static final AtomicReferenceFieldUpdater<ParallelMergeReduce.MergeReduceInner<T>, Subscription>
S

pack-priv T

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.
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 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 boolean done
parentback to summary
pack-priv final ParallelMergeReduce.MergeReduceMain<T> parent
reducerback to summary
pack-priv final BiFunction<T, T, T> reducer
sback to summary
pack-priv volatile Subscription s
Sback to summary
pack-priv static final AtomicReferenceFieldUpdater<ParallelMergeReduce.MergeReduceInner<T>, Subscription> S
Annotations
@SuppressWarnings:rawtypes
valueback to summary
pack-priv T value

Constructor Detail

MergeReduceInnerback to summary
pack-priv MergeReduceInner(ParallelMergeReduce.MergeReduceMain<T> parent, BiFunction<T, T, T> reducer)

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
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
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
reactor.core.publisher back to summary

pack-priv final Class ParallelMergeReduce.MergeReduceMain<T>

extends Object
implements InnerProducer<T>, Fuseable, Fuseable.QueueSubscription<T>
Class Inheritance
All Implemented Interfaces
reactor.core.Fuseable.QueueSubscription, org.reactivestreams.Subscription, java.util.Queue, java.util.Collection, java.lang.Iterable, reactor.core.Fuseable, reactor.core.publisher.InnerProducer, reactor.core.Scannable

Field Summary

Modifier and TypeField and Description
pack-priv final CoreSubscriber<? super T>
pack-priv volatile ParallelMergeReduce.SlotPair<T>
pack-priv static final AtomicReferenceFieldUpdater<ParallelMergeReduce.MergeReduceMain<T>, ParallelMergeReduce.SlotPair<T>>
pack-priv volatile Throwable
pack-priv static final AtomicReferenceFieldUpdater<ParallelMergeReduce.MergeReduceMain<T>, Throwable>
pack-priv final BiFunction<T, T, T>
pack-priv volatile int
pack-priv static final AtomicIntegerFieldUpdater<ParallelMergeReduce.MergeReduceMain<T>>
pack-priv final ParallelFlux<? extends T>
pack-priv final ParallelMergeReduce.MergeReduceInner<T>[]

Constructor Summary

AccessConstructor and Description
pack-priv
MergeReduceMain(ParallelFlux<? extends T> source, CoreSubscriber<? super T> actual, int n, BiFunction<T, T, T> reducer)

Method Summary

Modifier and TypeMethod and Description
public CoreSubscriber<? super T>
pack-priv ParallelMergeReduce.SlotPair<T>
addValue(T value)

public void
cancel()

Implements org.reactivestreams.Subscription.cancel.

Request the Publisher to stop sending data and clean up resources.
public void
clear()

Implements java.util.Collection.clear.

Removes all of the elements from this collection (optional operation).
pack-priv static <T> int
pack-priv void
innerComplete(T value)

pack-priv void
public boolean
isEmpty()

Implements java.util.Collection.isEmpty.

Returns true if this collection contains no elements.
public T
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 int
requestFusion(int
the mode requested by the intermediate operator
requestedMode
)

Implements reactor.core.Fuseable.QueueSubscription.requestFusion.

Request a specific fusion mode from this QueueSubscription.
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.
public int
size()

Implements java.util.Collection.size.

Returns the number of elements in this collection.
Inherited from java.lang.Object:
cloneequalsfinalizegetClasshashCodenotifynotifyAlltoStringwaitwaitwait

Field Detail

actualback to summary
pack-priv final CoreSubscriber<? super T> actual
currentback to summary
pack-priv volatile ParallelMergeReduce.SlotPair<T> current
CURRENTback to summary
pack-priv static final AtomicReferenceFieldUpdater<ParallelMergeReduce.MergeReduceMain<T>, ParallelMergeReduce.SlotPair<T>> CURRENT
Annotations
@SuppressWarnings:rawtypes
errorback to summary
pack-priv volatile Throwable error
ERRORback to summary
pack-priv static final AtomicReferenceFieldUpdater<ParallelMergeReduce.MergeReduceMain<T>, Throwable> ERROR
Annotations
@SuppressWarnings:rawtypes
reducerback to summary
pack-priv final BiFunction<T, T, T> reducer
remainingback to summary
pack-priv volatile int remaining
REMAININGback to summary
pack-priv static final AtomicIntegerFieldUpdater<ParallelMergeReduce.MergeReduceMain<T>> REMAINING
Annotations
@SuppressWarnings:rawtypes
sourceback to summary
pack-priv final ParallelFlux<? extends T> source
subscribersback to summary
pack-priv final ParallelMergeReduce.MergeReduceInner<T>[] subscribers

Constructor Detail

MergeReduceMainback to summary
pack-priv MergeReduceMain(ParallelFlux<? extends T> source, CoreSubscriber<? super T> actual, int n, BiFunction<T, T, T> reducer)

Method Detail

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

Implements reactor.core.publisher.InnerProducer.actual.

Annotations
@Override
addValueback to summary
pack-priv ParallelMergeReduce.SlotPair<T> addValue(T value)
Annotations
@Nullable
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
clearback to summary
public void clear()

Implements java.util.Collection.clear.

Doc from java.util.Collection.clear.

Removes all of the elements from this collection (optional operation). The collection will be empty after this method returns.

Annotations
@Override
decrementAndGetback to summary
pack-priv static <T> int decrementAndGet(ParallelMergeReduce.MergeReduceMain<T> instance)
innerCompleteback to summary
pack-priv void innerComplete(T value)
innerErrorback to summary
pack-priv void innerError(Throwable ex)
isEmptyback to summary
public boolean isEmpty()

Implements java.util.Collection.isEmpty.

Doc from java.util.Collection.isEmpty.

Returns true if this collection contains no elements.

Returns:boolean

true if this collection contains no elements

Annotations
@Override
pollback to summary
public T 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:T

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

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
requestFusionback to summary
public int requestFusion(int requestedMode)

Implements reactor.core.Fuseable.QueueSubscription.requestFusion.

Doc from reactor.core.Fuseable.QueueSubscription.requestFusion.

Request a specific fusion mode from this QueueSubscription.

One should request either SYNC, ASYNC or ANY modes (never NONE) and the implementor should return NONE, SYNC or ASYNC (never ANY).

For example, if a source supports only ASYNC fusion but the intermediate operator supports only SYNC fuseable sources, the operator may request SYNC fusion and the source can reject it via NONE, thus the operator can return NONE as well to downstream and the fusion doesn't happen.

Parameters
requestedMode:int

the mode requested by the intermediate operator

Returns:int

the actual fusion mode activated

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
@Override
@Nullable
sizeback to summary
public int 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
reactor.core.publisher back to summary

pack-priv final Class ParallelMergeReduce.SlotPair<T>

extends Object
Class Inheritance

Field Summary

Modifier and TypeField and Description
pack-priv static final AtomicIntegerFieldUpdater<ParallelMergeReduce.SlotPair<T>>
pack-priv volatile int
pack-priv T
pack-priv static final AtomicIntegerFieldUpdater<ParallelMergeReduce.SlotPair<T>>
pack-priv volatile int
pack-priv T

Constructor Summary

AccessConstructor and Description
pack-priv

Method Summary

Modifier and TypeMethod and Description
pack-priv boolean
pack-priv int
Inherited from java.lang.Object:
cloneequalsfinalizegetClasshashCodenotifynotifyAlltoStringwaitwaitwait

Field Detail

ACQback to summary
pack-priv static final AtomicIntegerFieldUpdater<ParallelMergeReduce.SlotPair<T>> ACQ
Annotations
@SuppressWarnings:rawtypes
acquireIndexback to summary
pack-priv volatile int acquireIndex
firstback to summary
pack-priv T first
RELback to summary
pack-priv static final AtomicIntegerFieldUpdater<ParallelMergeReduce.SlotPair<T>> REL
Annotations
@SuppressWarnings:rawtypes
releaseIndexback to summary
pack-priv volatile int releaseIndex
secondback to summary
pack-priv T second

Constructor Detail

SlotPairback to summary
pack-priv SlotPair()

Method Detail

releaseSlotback to summary
pack-priv boolean releaseSlot()
tryAcquireSlotback to summary
pack-priv int tryAcquireSlot()