io.reactivex

Interface ObservableTransformer<Upstream,Downstream>

Type Parameters:

Upstream - the upstream value type

Downstream - the downstream value type

public interface ObservableTransformer<Upstream,Downstream>

Interface to compose Observables.

Method Summary

Methods

Modifier and Type	Method and Description
ObservableSource<Downstream>	apply(Observable<Upstream> upstream) Applies a function to the upstream Observable and returns an ObservableSource with optionally different element type.

Method Detail

apply

ObservableSource<Downstream> apply(Observable<Upstream> upstream)
                                   throws java.lang.Exception

Applies a function to the upstream Observable and returns an ObservableSource with optionally different element type.

Parameters:

upstream - the upstream Observable instance

Returns:

the transformed ObservableSource instance

Throws:

java.lang.Exception - in case the transformation throws, checked exceptions will be wrapped into a RuntimeException