Uses of Interface
io.helidon.common.reactive.Single

Packages that use Single

Package	Description
io.helidon.common.reactive	Common reactive library for Helidon projects.
io.helidon.messaging.connectors.mock	Helidon messaging mock connector for testing purposes.

Uses of Single in io.helidon.common.reactive

Classes in io.helidon.common.reactive that implement Single

Modifier and Type	Class	Description
class	CompletionSingle<T>	Single as CompletionStage.

Methods in io.helidon.common.reactive that return Single

Modifier and Type	Method	Description
Single<T>	CompletionSingle.cancel()
default Single<T>	Single.cancel()	Cancel upstream.
default <U> Single<U>	Multi.collect(Collector<T,U> collector)	Collect the items of this Multi instance into a Single.
default <U> Single<U>	Multi.collect(Supplier<? extends U> collectionSupplier, BiConsumer<U,T> accumulator)	Collect the items of this Multi into a collection provided via a Supplier and mutated by a BiConsumer callback.
default Single<List<T>>	Multi.collectList()	Collect the items of this Multi instance into a Single of List.
default <A, R> Single<R>	Multi.collectStream(Collector<T,A,R> collector)	Collects up upstream items with the help of a the callbacks of a Collector.
default <U> Single<U>	Single.compose(Function<? super Single<T>,? extends Single<? extends U>> composer)	Apply the given composer function to the current Single instance and return the Single returned by this function.
static <T> Single<T>	Single.create(Single<T> single)	Create a Single instance that publishes the first and only item received from the given Single.
static <T> Single<T>	Single.create(CompletionStage<T> completionStage)	Wrap a CompletionStage into a Multi and signal its outcome non-blockingly.
static <T> Single<T>	Single.create(CompletionStage<T> completionStage, boolean nullMeansEmpty)	Wrap a CompletionStage into a Multi and signal its outcome non-blockingly.
static <T> Single<T>	Single.create(Flow.Publisher<T> source)	Create a Single instance that publishes the first and only item received from the given publisher.
static <T> Single<T>	Single.create(Supplier<? extends T> supplier)	Create a Single instance that publishes result of the given supplier to its subscriber(s).
default Single<T>	Single.defaultIfEmpty(Supplier<? extends T> supplier)	Signals the default item supplied by specified supplier if the upstream is empty.
default Single<T>	Single.defaultIfEmpty(T defaultItem)	Signals the default item if the upstream is empty.
static <T> Single<T>	Single.defer(Supplier<? extends Single<? extends T>> supplier)	Call the given supplier function for each individual downstream Subscriber to return a Flow.Publisher to subscribe to.
static <T> Single<T>	Single.empty()	Get a Single instance that completes immediately.
static <T> Single<T>	Single.error(Throwable error)	Create a Single instance that reports the given given exception to its subscriber(s).
default Single<T>	Multi.first()	Get the first item of this Multi instance as a Single.
default <U> Single<U>	Single.flatMapCompletionStage(Function<? super T,? extends CompletionStage<? extends U>> mapper)	Transforms item with supplied function and flatten resulting CompletionStage result to downstream.
default <U> Single<U>	Single.flatMapOptional(Function<? super T,Optional<? extends U>> mapper)	Transform item with supplied function and flatten resulting Optional to downstream as Single with its value as item if present or empty Single.
default <U> Single<U>	Single.flatMapSingle(Function<? super T,? extends Single<? extends U>> mapper)	Transforms item with supplied function and flatten resulting Single to downstream.
default Single<Void>	Multi.forEach(Consumer<? super T> consumer)	Terminal stage, invokes provided consumer for every item in the stream with no backpressure.
default Single<Void>	Multi.forEachCompletionStage(Function<? super T,CompletionStage<Void>> function)	Terminal stage, invokes provided consumer for every item in the stream with strict backpressure.
static <T> Single<T>	Single.from(Single<T> single)	Deprecated. use create(io.helidon.common.reactive.Single) instead
static <T> Single<T>	Single.from(CompletionStage<T> completionStage)	Deprecated. use create(java.util.concurrent.CompletionStage) instead
static <T> Single<T>	Single.from(CompletionStage<T> completionStage, boolean nullMeansEmpty)	Deprecated. use create(java.util.concurrent.CompletionStage, boolean) instead
static <T> Single<T>	Single.from(Flow.Publisher<T> source)	Deprecated. use create(java.util.concurrent.Flow.Publisher) instead
default Single<T>	Single.ifEmpty(Runnable ifEmpty)	Executes given Runnable when stream is finished without value(empty stream).
default Single<Void>	Multi.ignoreElements()	Terminal stage, ignore all items and complete returned Single<Void> successfully or exceptionally.
static <T> Single<T>	Single.just(T item)	Create a Single instance that publishes the given item to its subscriber(s).
default Single<T>	Single.log()	Log all signals onSubscribe, onNext, onError, onComplete, cancel and request coming to and from preceding operator.
default Single<T>	Single.log(Level level)	Log all signals onSubscribe, onNext, onError, onComplete, cancel and request coming to and from preceding operator.
default Single<T>	Single.log(Level level, boolean trace)	Log all signals onSubscribe, onNext, onError, onComplete, cancel and request coming to and from preceding operator.
default Single<T>	Single.log(Level level, String loggerName)	Log all signals onSubscribe, onNext, onError, onComplete, cancel and request coming to and from preceding operator.
default <U> Single<U>	Single.map(Function<? super T,? extends U> mapper)	Map this Single instance to a new Single of another type using the given Function.
static <T> Single<T>	Single.never()	Get a Single instance that never completes.
default Single<T>	Single.observeOn(Executor executor)	Re-emit the upstream's signals to the downstream on the given executor's thread.
Single<T>	CompletionSingle.onCancel(Runnable onCancel)
default Single<T>	Single.onCancel(Runnable onCancel)	Executes given Runnable when a cancel signal is received.
default Single<T>	Single.onComplete(Runnable onComplete)	Executes given Runnable when onComplete signal is received.
default Single<T>	Single.onCompleteResumeWithSingle(Function<Optional<T>,? extends Single<? extends T>> onComplete)	Resume stream with supplied single if onComplete signal is intercepted.
default Single<T>	Single.onError(Consumer<? super Throwable> onErrorConsumer)	Executes given Consumer when onError signal is received.
default Single<T>	Single.onErrorResume(Function<? super Throwable,? extends T> onError)	Function providing one item to be submitted as onNext in case of onError signal is received.
default Single<T>	Single.onErrorResumeWithSingle(Function<? super Throwable,? extends Single<? extends T>> onError)	Resume stream from supplied publisher if onError signal is intercepted.
default Single<T>	Single.onTerminate(Runnable onTerminate)	Executes given Runnable when any of signals onComplete, onCancel or onError is received.
default Single<T>	Single.peek(Consumer<? super T> consumer)	Invoke provided consumer for the item in stream.
default Single<T>	Multi.reduce(BiFunction<T,T,T> reducer)	Combine subsequent items via a callback function and emit the final value result as a Single.
default <R> Single<R>	Multi.reduce(Supplier<? extends R> supplier, BiFunction<R,T,R> reducer)	Combine every upstream item with an accumulator value to produce a new accumulator value and emit the final accumulator value as a Single.
default Single<T>	Single.retry(long count)	Retry a failing upstream at most the given number of times before giving up.
default Single<T>	Single.retry(BiPredicate<? super Throwable,? super Long> predicate)	Retry a failing upstream if the predicate returns true.
default <U> Single<T>	Single.retryWhen(BiFunction<? super Throwable,? super Long,? extends Flow.Publisher<U>> whenFunction)	Retry a failing upstream when the given function returns a publisher that signals an item.
default Single<T>	Single.switchIfEmpty(Single<T> other)	Switch to the other Single if the upstream is empty.
default <U> Single<T>	Single.takeUntil(Flow.Publisher<U> other)	Relay upstream items until the other source signals an item or completes.
default Single<T>	Single.timeout(long timeout, TimeUnit unit, ScheduledExecutorService executor)	Signals a TimeoutException if the upstream doesn't signal an item, error or completion within the specified time.
default Single<T>	Single.timeout(long timeout, TimeUnit unit, ScheduledExecutorService executor, Single<T> fallback)	Switches to a fallback single if the upstream doesn't signal an item, error or completion within the specified time.
static Single<Long>	Single.timer(long time, TimeUnit unit, ScheduledExecutorService executor)	Signal 0L and complete the sequence after the given time elapsed.
default Single<Optional<T>>	Single.toOptionalSingle()	Exposes this Single instance as a Single with Optional<T> return type of the asynchronous operation.

Methods in io.helidon.common.reactive that return types with arguments of type Single

Modifier and Type	Method	Description
Function<? super Multi<ByteBuffer>,? extends Single<Void>>	IoMulti.MultiToByteChannelBuilder.build()
static Function<? super Multi<ByteBuffer>,? extends Single<Void>>	IoMulti.multiToByteChannel(WritableByteChannel writableChannel)	Creates function consuming Multi<ByteBuffer> to supplied WritableByteChannel.

Methods in io.helidon.common.reactive with parameters of type Single

Modifier and Type	Method	Description
static <T> Multi<T>	Multi.create(Single<T> single)	Create a Multi instance wrapped around the given Single.
static <T> Single<T>	Single.create(Single<T> single)	Create a Single instance that publishes the first and only item received from the given Single.
static <T> Multi<T>	Multi.from(Single<T> single)	Deprecated. use Multi.create(io.helidon.common.reactive.Single) instead
static <T> Single<T>	Single.from(Single<T> single)	Deprecated. use create(io.helidon.common.reactive.Single) instead
default Single<T>	Single.switchIfEmpty(Single<T> other)	Switch to the other Single if the upstream is empty.
default Single<T>	Single.timeout(long timeout, TimeUnit unit, ScheduledExecutorService executor, Single<T> fallback)	Switches to a fallback single if the upstream doesn't signal an item, error or completion within the specified time.

Method parameters in io.helidon.common.reactive with type arguments of type Single

Modifier and Type	Method	Description
default <U> Single<U>	Single.compose(Function<? super Single<T>,? extends Single<? extends U>> composer)	Apply the given composer function to the current Single instance and return the Single returned by this function.
default <U> Single<U>	Single.compose(Function<? super Single<T>,? extends Single<? extends U>> composer)	Apply the given composer function to the current Single instance and return the Single returned by this function.
static <T> Single<T>	Single.defer(Supplier<? extends Single<? extends T>> supplier)	Call the given supplier function for each individual downstream Subscriber to return a Flow.Publisher to subscribe to.
default <U> Single<U>	Single.flatMapSingle(Function<? super T,? extends Single<? extends U>> mapper)	Transforms item with supplied function and flatten resulting Single to downstream.
default Single<T>	Single.onCompleteResumeWithSingle(Function<Optional<T>,? extends Single<? extends T>> onComplete)	Resume stream with supplied single if onComplete signal is intercepted.
default Single<T>	Single.onErrorResumeWithSingle(Function<? super Throwable,? extends Single<? extends T>> onError)	Resume stream from supplied publisher if onError signal is intercepted.
default <U> U	Single.to(Function<? super Single<T>,? extends U> converter)	Apply the given converter function to the current Single instance and return the value returned by this function.

Uses of Single in io.helidon.messaging.connectors.mock

Methods in io.helidon.messaging.connectors.mock that return Single

Modifier and Type	Method	Description
Single<Void>	MockOutgoing.whenComplete()	Returns single which is completed when the terminates with the complete signal.