io.reactivex.rxjavafx.sources.CompositeObservable Maven / Gradle / Ivy

/**
 * Copyright 2017 Netflix, Inc.
 *
 * 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.rxjavafx.sources;


import io.reactivex.Observable;
import io.reactivex.ObservableTransformer;
import io.reactivex.disposables.CompositeDisposable;
import io.reactivex.disposables.Disposable;
import io.reactivex.subjects.PublishSubject;
import io.reactivex.subjects.Subject;

import java.util.Arrays;


/**
 * Use a Subject instead of a CompositeObservable
 */
@Deprecated
public final class CompositeObservable {

    private final Subject subject;
    private final Observable output;

    /**
     *  Creates a new CompositeObservable
     */
    public CompositeObservable() {
        this(null);
    }

    /**
     * Creates a new CompositeObservable with the provided transformations applied to the returned Observable
     * yield from `toObservable()`. For instance, you can pass `obs -> obs.replay(1).refCount()` to make this CompositeObservable
     * @param transformer
     */
    public CompositeObservable(ObservableTransformer transformer) {
        subject = PublishSubject.create().toSerialized();

        if (transformer == null) {
            output = subject;
        } else {
            output = subject.compose(transformer);
        }
    }

    /**
     * Returns the `Observable` combining all the source Observables, with any transformations that were specified
     * on construction.
     * @return
     */
    public Observable toObservable() {
        return output;
    }
    public Disposable add(Observable observable) {
        return observable.subscribe(subject::onNext,subject::onError,subject::onComplete);
    }
    public CompositeDisposable addAll(Observable... observables) {
        final CompositeDisposable disposables = new CompositeDisposable();
        Arrays.stream(observables).map(this::add).forEach(disposables::add);
        return disposables;
    }
}