Top Description Fields Constructors Methods
reactor.core.publisher

pack-priv final Class MonoNever

extends Mono<Object>
implements SourceProducer<Object>
Class Inheritance
All Implemented Interfaces
reactor.core.publisher.SourceProducer, org.reactivestreams.Publisher, reactor.core.Scannable
Imports
reactor.core.CoreSubscriber
Represents an never publisher which only calls onSubscribe.

This Publisher is effectively stateless and only a single instance exists. Use the instance() method to obtain a properly type-parametrized view of it.

See Also
Reactive-Streams-Commons

Field Summary

Modifier and TypeField and Description
pack-priv static final Mono<Object>
INSTANCE

Inherited from reactor.core.publisher.Mono:
EQUALS_BIPREDICATE

Constructor Summary

AccessConstructor and Description
pack-priv
MonoNever()

Method Summary

Modifier and TypeMethod and Description
pack-priv static <
the value type
T> Mono<T>

Returns:

a properly parametrized instance of this never Publisher
instance()

Returns a properly parametrized instance of this never Publisher.

public Object
scanUnsafe(Scannable.Attr<T>
a Attr to resolve for the component.
key)

Overrides default reactor.core.publisher.SourceProducer.scanUnsafe.

This method is used internally by components to define their key-value mappings in a single place.
public void
subscribe(CoreSubscriber<? super Object>
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

INSTANCEback to summary
pack-priv static final Mono<Object> INSTANCE

Constructor Detail

MonoNeverback to summary
pack-priv MonoNever()

Method Detail

instanceback to summary
pack-priv static <T> Mono<T> instance()

Returns a properly parametrized instance of this never Publisher.

Parameters
<T>
the value type
Returns:Mono<T>

a properly parametrized instance of this never Publisher

Annotations
@SuppressWarnings:unchecked
scanUnsafeback to summary
public Object scanUnsafe(Scannable.Attr<T> key)

Overrides default reactor.core.publisher.SourceProducer.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
subscribeback to summary
public void subscribe(CoreSubscriber<? super Object> 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 Object>

the Subscriber interested into the published sequence

Annotations
@Override