io.reactivex.flowable

Interface FlowableOperator<Downstream,Upstream>

Type Parameters:

Downstream - the value type of the downstream

Upstream - the value type of the upstream

public interface FlowableOperator<Downstream,Upstream>

Interface to map/wrap a downstream subscriber to an upstream subscriber.

Method Summary

Modifier and Type	Method and Description
org.reactivestreams.Subscriber<? super Upstream>	apply(org.reactivestreams.Subscriber<? super Downstream> observer) Applies a function to the child Subscriber and returns a new parent Subscriber.

Method Detail

apply

@NonNull
org.reactivestreams.Subscriber<? super Upstream> apply(@NonNull
                                                                 org.reactivestreams.Subscriber<? super Downstream> observer)
                                                          throws java.lang.Exception

Applies a function to the child Subscriber and returns a new parent Subscriber.

Parameters:

observer - the child Subscriber instance

Returns:

the parent Subscriber instance

Throws:

java.lang.Exception - on failure