All Downloads are FREE. Search and download functionalities are using the official Maven repository.

io.reactivex.internal.fuseable.FuseToObservable Maven / Gradle / Ivy

There is a newer version: 2.2.21
Show newest version
/**
 * Copyright (c) 2016-present, RxJava Contributors.
 *
 * 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.internal.fuseable;

import io.reactivex.Observable;

/**
 * Interface indicating a operator implementation can be macro-fused back to Observable in case
 * the operator goes from Observable to some other reactive type and then the sequence calls
 * for toObservable again:
 * 
 * Single<Integer> single = Observable.range(1, 10).reduce((a, b) -> a + b);
 * Observable<Integer> observable = single.toObservable();
 * 
* * The {@code Single.toObservable()} will check for this interface and call the {@link #fuseToObservable()} * to return an Observable which could be the Observable-specific implementation of reduce(BiFunction). *

* This causes a slight overhead in assembly time (1 instanceof check, 1 operator allocation and 1 dropped * operator) but does not incur the conversion overhead at runtime. * * @param the value type */ public interface FuseToObservable { /** * Returns a (direct) Observable for the operator. *

The implementation should handle the necessary RxJavaPlugins wrapping. * @return the Observable instance */ Observable fuseToObservable(); }





© 2015 - 2024 Weber Informatics LLC | Privacy Policy