RxJava/src/main/java/io/reactivex/MaybeTransformer.java at 2.x · hemanthgit/RxJava · GitHub

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/**

* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in

* compliance with the License. You may obtain a copy of the License at

* http://www.apache.org/licenses/LICENSE-2.0

* Unless required by applicable law or agreed to in writing, software distributed under the License is

* distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See

* the License for the specific language governing permissions and limitations under the License.

package io.reactivex;

import io.reactivex.annotations.*;

/**

* Interface to compose Maybes.

* @param <Upstream> the upstream value type

* @param <Downstream> the downstream value type

public interface MaybeTransformer<Upstream, Downstream> {

/**

* Applies a function to the upstream Maybe and returns a MaybeSource with

* optionally different element type.

* @param upstream the upstream Maybe instance

* @return the transformed MaybeSource instance

@NonNull

MaybeSource<Downstream> apply(@NonNull Maybe<Upstream> upstream);

}

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