Class FlowableReduceMaybe<T>

java.lang.Object

io.reactivex.rxjava3.core.Maybe<T>

io.reactivex.rxjava3.internal.operators.flowable.FlowableReduceMaybe<T>

Type Parameters:

T - the value type

All Implemented Interfaces:

MaybeSource<T>, FuseToFlowable<T>, HasUpstreamPublisher<T>

public final class FlowableReduceMaybe<T>
extends Maybe<T>
implements HasUpstreamPublisher<T>, FuseToFlowable<T>

Reduce a Flowable into a single value exposed as Single or signal NoSuchElementException.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) static final class	FlowableReduceMaybe.ReduceSubscriber<T>

Field Summary

Fields

Modifier and Type	Field	Description
(package private) final BiFunction<T,T,T>	reducer
(package private) final Flowable<T>	source

Constructor Summary

Constructors

Constructor	Description
FlowableReduceMaybe(Flowable<T> source, BiFunction<T,T,T> reducer)

Method Summary

Modifier and Type	Method	Description
Flowable<T>	fuseToFlowable()	Returns a (direct) Flowable for the operator.
org.reactivestreams.Publisher<T>	source()	Returns the source Publisher.
protected void	subscribeActual(MaybeObserver<? super T> observer)	Implement this method in subclasses to handle the incoming MaybeObservers.

Methods inherited from class Maybe

amb, ambArray, ambWith, blockingGet, blockingGet, blockingSubscribe, blockingSubscribe, blockingSubscribe, blockingSubscribe, blockingSubscribe, cache, cast, compose, concat, concat, concat, concat, concat, concat, concatArray, concatArrayDelayError, concatArrayEager, concatArrayEagerDelayError, concatDelayError, concatDelayError, concatDelayError, concatEager, concatEager, concatEager, concatEager, concatEagerDelayError, concatEagerDelayError, concatEagerDelayError, concatEagerDelayError, concatMap, concatMapCompletable, concatMapSingle, concatWith, contains, count, create, defaultIfEmpty, defer, delay, delay, delay, delay, delay, delaySubscription, delaySubscription, delaySubscription, dematerialize, doAfterSuccess, doAfterTerminate, doFinally, doOnComplete, doOnDispose, doOnError, doOnEvent, doOnLifecycle, doOnSubscribe, doOnSuccess, doOnTerminate, empty, error, error, filter, flatMap, flatMap, flatMap, flatMapCompletable, flatMapObservable, flatMapPublisher, flatMapSingle, flattenAsFlowable, flattenAsObservable, flattenStreamAsFlowable, flattenStreamAsObservable, fromAction, fromCallable, fromCompletable, fromCompletionStage, fromFuture, fromFuture, fromObservable, fromOptional, fromPublisher, fromRunnable, fromSingle, fromSupplier, hide, ignoreElement, isEmpty, just, lift, map, mapOptional, materialize, merge, merge, merge, merge, merge, merge, merge, mergeArray, mergeArrayDelayError, mergeDelayError, mergeDelayError, mergeDelayError, mergeDelayError, mergeDelayError, mergeDelayError, mergeWith, never, observeOn, ofType, onErrorComplete, onErrorComplete, onErrorResumeNext, onErrorResumeWith, onErrorReturn, onErrorReturnItem, onTerminateDetach, repeat, repeat, repeatUntil, repeatWhen, retry, retry, retry, retry, retry, retryUntil, retryWhen, safeSubscribe, sequenceEqual, sequenceEqual, startWith, startWith, startWith, startWith, startWith, subscribe, subscribe, subscribe, subscribe, subscribe, subscribe, subscribeOn, subscribeWith, switchIfEmpty, switchIfEmpty, switchOnNext, switchOnNextDelayError, takeUntil, takeUntil, test, test, timeInterval, timeInterval, timeInterval, timeInterval, timeout, timeout, timeout, timeout, timeout, timeout, timeout, timeout, timer, timer, timestamp, timestamp, timestamp, timestamp, to, toCompletionStage, toCompletionStage, toFlowable, toFuture, toObservable, toSingle, unsafeCreate, unsubscribeOn, using, using, wrap, zip, zip, zip, zip, zip, zip, zip, zip, zip, zipArray, zipWith

Methods inherited from class Object

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

Field Details

source

final Flowable<T> source

reducer

final BiFunction<T,T,T> reducer

Constructor Details

FlowableReduceMaybe

public FlowableReduceMaybe(Flowable<T> source,
 BiFunction<T,T,T> reducer)

Method Details

source

public org.reactivestreams.Publisher<T> source()

Description copied from interface: HasUpstreamPublisher

Returns the source Publisher.

This method is intended to discover the assembly graph of sequences.

Specified by:

source in interface HasUpstreamPublisher<T>

Returns:

the source Publisher

fuseToFlowable

public Flowable<T> fuseToFlowable()

Description copied from interface: FuseToFlowable

Returns a (direct) Flowable for the operator.

The implementation should handle the necessary RxJavaPlugins wrapping.

Specified by:

fuseToFlowable in interface FuseToFlowable<T>

Returns:

the Flowable instance

subscribeActual

protected void subscribeActual(MaybeObserver<? super T> observer)

Description copied from class: Maybe

Implement this method in subclasses to handle the incoming MaybeObservers.

There is no need to call any of the plugin hooks on the current Maybe instance or the MaybeObserver; all hooks and basic safeguards have been applied by Maybe.subscribe(MaybeObserver) before this method gets called.

Specified by:

subscribeActual in class Maybe<T>

Parameters:

observer - the MaybeObserver to handle, not null