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

Packages that use Single

Package	Description
io.helidon.common.http	HTTP APIs and implementations usable by both server and client side of the HTTP story.
io.helidon.common.reactive	Common reactive library for Helidon projects.
io.helidon.dbclient	Reactive Database API for Helidon.
io.helidon.dbclient.common	Helper classes to use in various implementations.
io.helidon.dbclient.mongodb	Helidon DB integration for reactive mongoDB.
io.helidon.dbclient.tracing	Tracing support for Helidon DB.
io.helidon.media.common	Common classes for processing content with a specific MediaType.
io.helidon.media.multipart	Helidon Media MultiPart.
io.helidon.webclient	A reactive client for rest calls.
io.helidon.webclient.metrics	Client metrics service.
io.helidon.webclient.security	Client service propagation service.
io.helidon.webclient.spi	This package provides extensibility for the WebClient.
io.helidon.webclient.tracing	Client tracing propagation service.
io.helidon.webserver	Reactive web server API.

Uses of Single in io.helidon.common.http

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

Modifier and Type	Method	Description
<T> Single<T>	Content.as(Class<T> type)	Deprecated. Consumes and converts the request content into a completion stage of the requested type.

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.
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.flatMapSingle(Function<? super T,? extends Single<? extends U>> mapper)	Map this Single instance to a Single using the given Mapper.
default Single<Void>	Multi.forEach(Consumer<? super T> consumer)	Terminal stage, invokes provided consumer for every item in the stream.
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
static <T> Single<T>	Single.just(T item)	Create a Single instance that publishes the given item to its subscriber(s).
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.onError(Consumer<? super Throwable> onErrorConsumer)	Executes given Runnable 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 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)	Map this Single instance to a Single using the given Mapper.
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.dbclient

Methods in io.helidon.dbclient that return Single

Modifier and Type	Method	Description
default Single<Long>	DbExecute.delete(String statement, Object... parameters)	Create and execute delete statement using a statement passed as an argument.
default Single<Long>	DbExecute.dml(String statement, Object... parameters)	Create and execute data modification statement using a statement passed as an argument.
default Single<Optional<DbRow>>	DbExecute.get(String statement, Object... parameters)	Create and execute a database query using a statement passed as an argument.
default Single<Long>	DbExecute.insert(String statement, Object... parameters)	Create and execute insert statement using a statement passed as an argument.
default Single<Long>	DbExecute.namedDelete(String statementName, Object... parameters)	Create and execute delete statement using a statement defined in the configuration file.
default Single<Long>	DbExecute.namedDml(String statementName, Object... parameters)	Create and execute a data modification statement using a statement defined in the configuration file.
default Single<Optional<DbRow>>	DbExecute.namedGet(String statementName, Object... parameters)	Create and execute a database query using a statement defined in the configuration file.
default Single<Long>	DbExecute.namedInsert(String statementName, Object... parameters)	Create and execute insert statement using a statement defined in the configuration file.
default Single<Long>	DbExecute.namedUpdate(String statementName, Object... parameters)	Create and execute update statement using a statement defined in the configuration file.
Single<Void>	DbClient.ping()	Pings the database, completes when DB is up and ready, completes exceptionally if not.
Single<DbClientServiceContext>	DbClientService.statement(DbClientServiceContext context)	Statement execution to be intercepted.
default Single<Long>	DbExecute.update(String statement, Object... parameters)	Create and execute update statement using a statement passed as an argument.

Uses of Single in io.helidon.dbclient.common

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

Modifier and Type	Method	Description
protected abstract Single<DbClientServiceContext>	DbClientServiceBase.apply(DbClientServiceContext context)	This method is only invoked if the predicate for this service was passed.
Single<DbClientServiceContext>	DbClientContext.invokeServices(DbClientServiceContext dbContext)	Invoke all configured client services and return a single that completes once all the client services complete.
Single<DbClientServiceContext>	DbClientServiceBase.statement(DbClientServiceContext context)

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

Modifier and Type	Method	Description
protected abstract R	AbstractStatement.doExecute(Single<DbClientServiceContext> dbContext, CompletableFuture<Void> statementFuture, CompletableFuture<Long> queryFuture)	Execute the statement against the database.

Uses of Single in io.helidon.dbclient.mongodb

Methods in io.helidon.dbclient.mongodb that return Single

Modifier and Type	Method	Description
protected Single<Long>	MongoDbStatementDml.doExecute(Single<DbClientServiceContext> dbContext, CompletableFuture<Void> statementFuture, CompletableFuture<Long> queryFuture)
Single<Long>	MongoDbStatementDml.execute()
Single<Optional<DbRow>>	MongoDbStatementGet.execute()
Single<Void>	MongoDbClient.ping()

Methods in io.helidon.dbclient.mongodb with parameters of type Single

Modifier and Type	Method	Description
protected Single<Long>	MongoDbStatementDml.doExecute(Single<DbClientServiceContext> dbContext, CompletableFuture<Void> statementFuture, CompletableFuture<Long> queryFuture)

Uses of Single in io.helidon.dbclient.tracing

Methods in io.helidon.dbclient.tracing that return Single

Modifier and Type	Method	Description
protected Single<DbClientServiceContext>	DbClientTracing.apply(DbClientServiceContext serviceContext)

Uses of Single in io.helidon.media.common

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

Modifier and Type	Method	Description
<T> Single<T>	MessageBodyReadableContent.as(GenericType<T> type)	Consumes and converts the content payload into a completion stage of the requested type.
<T> Single<T>	MessageBodyReadableContent.as(Class<T> type)
<U extends T> Single<U>	MessageBodyReader.read(Flow.Publisher<DataChunk> publisher, GenericType<U> type, MessageBodyReaderContext context)	Convert a HTTP payload into a Single publisher of the given type.
static Single<byte[]>	ContentReaders.readBytes(Flow.Publisher<DataChunk> chunks)	Collect the DataChunk of the given publisher into a single byte array.
static Single<String>	ContentReaders.readString(Flow.Publisher<DataChunk> chunks, Charset charset)	Convert the given publisher of DataChunk into a String.
static Single<String>	ContentReaders.readURLEncodedString(Flow.Publisher<DataChunk> chunks, Charset charset)	Convert the publisher of DataChunk into a String processed through URL decoding.
<T> Single<T>	MessageBodyReaderContext.unmarshall(Flow.Publisher<DataChunk> payload, GenericType<T> type)	Convert a given HTTP payload into a publisher by selecting a reader that accepts the specified type and current context.
<T> Single<T>	MessageBodyReaderContext.unmarshall(Flow.Publisher<DataChunk> payload, MessageBodyReader<T> reader, GenericType<T> type)	Convert a given HTTP payload into a publisher by selecting a reader with the specified class.
static Single<DataChunk>	ContentWriters.writeBytes(byte[] bytes, boolean copy)	Create a DataChunk with the given byte array and return a Single.
static Single<DataChunk>	ContentWriters.writeCharBuffer(CharBuffer buffer, Charset charset)	Create a a publisher DataChunk with the given CharBuffer / Charset and return a Single.
static Single<DataChunk>	ContentWriters.writeCharSequence(CharSequence cs, Charset charset)	Create a publisher of DataChunk with the given CharSequence / Charset and return a Single.
static Single<DataChunk>	ContentWriters.writeStackTrace(Throwable throwable, Charset charset)	Create a a publisher DataChunk with the given Throwable / Charset and return a Single.

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

Modifier and Type	Method	Description
<T> Flow.Publisher<DataChunk>	MessageBodyWriterContext.marshall(Single<T> content, GenericType<T> type)	Convert a given input publisher into HTTP payload by selecting a writer that accepts the specified type and current context.
<T> Flow.Publisher<DataChunk>	MessageBodyWriterContext.marshall(Single<T> content, MessageBodyWriter<T> writer, GenericType<T> type)	Convert a given input publisher into HTTP payload by selecting a writer with the specified class.
Flow.Publisher<DataChunk>	MessageBodyWriter.write(Single<? extends T> single, GenericType<? extends T> type, MessageBodyWriterContext context)	Generate HTTP payload from the objects of the given type.

Uses of Single in io.helidon.media.multipart

Methods in io.helidon.media.multipart that return Single

Modifier and Type	Method	Description
<U extends MultiPart> Single<U>	MultiPartBodyReader.read(Flow.Publisher<DataChunk> publisher, GenericType<U> type, MessageBodyReaderContext context)

Methods in io.helidon.media.multipart with parameters of type Single

Modifier and Type	Method	Description
Flow.Publisher<DataChunk>	MultiPartBodyWriter.write(Single<? extends WriteableMultiPart> content, GenericType<? extends WriteableMultiPart> type, MessageBodyWriterContext context)

Uses of Single in io.helidon.webclient

Methods in io.helidon.webclient that return Single

Modifier and Type	Method	Description
Single<Void>	WebClientResponse.close()	Asynchronous close of the response.
Single<WebClientResponse>	WebClientRequestBuilder.request()	Performs prepared request without expecting to receive any specific type.
<T> Single<T>	WebClientRequestBuilder.request(GenericType<T> responseType)	Performs prepared request and transforms response to requested type.
<T> Single<T>	WebClientRequestBuilder.request(Class<T> responseType)	Performs prepared request and transforms response to requested type.
Single<WebClientResponse>	WebClientRequestBuilder.submit()	Performs prepared request.
Single<WebClientResponse>	WebClientRequestBuilder.submit(Object requestEntity)	Performs prepared request and submitting request entity.
<T> Single<T>	WebClientRequestBuilder.submit(Object requestEntity, Class<T> responseType)	Performs prepared request and submitting request entity.
Single<WebClientResponse>	WebClientRequestBuilder.submit(Flow.Publisher<DataChunk> requestEntity)	Performs prepared request and submitting request entity using Flow.Publisher.
<T> Single<T>	WebClientRequestBuilder.submit(Flow.Publisher<DataChunk> requestEntity, Class<T> responseType)	Performs prepared request and submitting request entity using Flow.Publisher.
Single<WebClientServiceResponse>	WebClientServiceRequest.whenComplete()	Completes when the full processing of this request is done (e.g.
Single<WebClientServiceResponse>	WebClientServiceRequest.whenResponseReceived()	Completes when the response headers has been received, but entity has not been processed yet.
Single<WebClientServiceRequest>	WebClientServiceRequest.whenSent()	Completes when the request part of this request is done (e.g.

Uses of Single in io.helidon.webclient.metrics

Methods in io.helidon.webclient.metrics that return Single

Modifier and Type	Method	Description
Single<WebClientServiceRequest>	WebClientMeter.request(WebClientServiceRequest request)
Single<WebClientServiceRequest>	WebClientMetrics.request(WebClientServiceRequest request)
Single<WebClientServiceResponse>	WebClientMetrics.response(WebClientRequestBuilder.ClientRequest request, WebClientServiceResponse response)

Uses of Single in io.helidon.webclient.security

Methods in io.helidon.webclient.security that return Single

Modifier and Type	Method	Description
Single<WebClientServiceRequest>	WebClientSecurity.request(WebClientServiceRequest request)

Uses of Single in io.helidon.webclient.spi

Methods in io.helidon.webclient.spi that return Single

Modifier and Type	Method	Description
Single<WebClientServiceRequest>	WebClientService.request(WebClientServiceRequest request)	Method which is called before send actual request.
default Single<WebClientServiceResponse>	WebClientService.response(WebClientRequestBuilder.ClientRequest request, WebClientServiceResponse response)	Method which is called when the last byte of the response is processed.

Uses of Single in io.helidon.webclient.tracing

Methods in io.helidon.webclient.tracing that return Single

Modifier and Type	Method	Description
Single<WebClientServiceRequest>	WebClientTracing.request(WebClientServiceRequest request)

Uses of Single in io.helidon.webserver

Methods in io.helidon.webserver that return Single

Modifier and Type	Method	Description
Single<ResponseHeaders>	ResponseHeaders.send()	Send headers and status code to the client.
Single<ServerResponse>	ServerResponse.send()	Sends an empty response.
Single<ServerResponse>	ServerResponse.send(Flow.Publisher<DataChunk> content)	Send a message as is without any other marshalling.
<T> Single<ServerResponse>	ServerResponse.send(Flow.Publisher<T> content, Class<T> clazz)	Send a message with the given entity stream as content and close the response.
<T> Single<ServerResponse>	ServerResponse.send(T content)	Send a message and close the response.
Single<WebServer>	WebServer.shutdown()	Attempt to gracefully shutdown server.
Single<WebServer>	WebServer.start()	Starts the server.
Single<BareResponse>	BareResponse.whenCompleted()	Returns a Single of this response.
Single<BareResponse>	BareResponse.whenHeadersCompleted()	Returns a Single of headers part of this response.
default Single<ResponseHeaders>	ResponseHeaders.whenSend()	Deprecated. since 2.0.0, please use ResponseHeaders.whenSent()
Single<ResponseHeaders>	ResponseHeaders.whenSent()	Returns a Single which is completed when all headers are sent to the client.
Single<ServerResponse>	ServerResponse.whenSent()	Completion stage is completed when response is completed.
Single<WebServer>	WebServer.whenShutdown()	Completion stage is completed when server is shut down.