Class FlowableMapOptional<T,​R>

  • Type Parameters:
    T - the upstream element type
    R - the output element type
    All Implemented Interfaces:
    org.reactivestreams.Publisher<R>

    public final class FlowableMapOptional<T,​R>
    extends Flowable<R>
    Map the upstream values into an Optional and emit its value if any.
    Since:
    3.0.0
    • Field Detail

      • mapper

        final Function<? super T,​java.util.Optional<? extends R>> mapper
    • Constructor Detail

      • FlowableMapOptional

        public FlowableMapOptional​(Flowable<T> source,
                                   Function<? super T,​java.util.Optional<? extends R>> mapper)
    • Method Detail

      • subscribeActual

        protected void subscribeActual​(org.reactivestreams.Subscriber<? super R> s)
        Description copied from class: Flowable
        Operator implementations (both source and intermediate) should implement this method that performs the necessary business logic and handles the incoming Subscribers.

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

        Specified by:
        subscribeActual in class Flowable<R>
        Parameters:
        s - the incoming Subscriber, never null