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.
/** * 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.operators.maybe; import java.util.concurrent.atomic.AtomicReference; import org.reactivestreams.*; import io.reactivex.*; import io.reactivex.disposables.Disposable; import io.reactivex.internal.disposables.DisposableHelper; import io.reactivex.internal.subscriptions.SubscriptionHelper; import io.reactivex.plugins.RxJavaPlugins;
Relays the main source's event unless the other Publisher signals an item first or just completes at which point the resulting Maybe is completed.
Type parameters:
  • <T> – the value type
  • <U> – the other's value type
/** * Relays the main source's event unless the other Publisher signals an item first or just completes * at which point the resulting Maybe is completed. * * @param <T> the value type * @param <U> the other's value type */
public final class MaybeTakeUntilPublisher<T, U> extends AbstractMaybeWithUpstream<T, T> { final Publisher<U> other; public MaybeTakeUntilPublisher(MaybeSource<T> source, Publisher<U> other) { super(source); this.other = other; } @Override protected void subscribeActual(MaybeObserver<? super T> observer) { TakeUntilMainMaybeObserver<T, U> parent = new TakeUntilMainMaybeObserver<T, U>(observer); observer.onSubscribe(parent); other.subscribe(parent.other); source.subscribe(parent); } static final class TakeUntilMainMaybeObserver<T, U> extends AtomicReference<Disposable> implements MaybeObserver<T>, Disposable { private static final long serialVersionUID = -2187421758664251153L; final MaybeObserver<? super T> downstream; final TakeUntilOtherMaybeObserver<U> other; TakeUntilMainMaybeObserver(MaybeObserver<? super T> downstream) { this.downstream = downstream; this.other = new TakeUntilOtherMaybeObserver<U>(this); } @Override public void dispose() { DisposableHelper.dispose(this); SubscriptionHelper.cancel(other); } @Override public boolean isDisposed() { return DisposableHelper.isDisposed(get()); } @Override public void onSubscribe(Disposable d) { DisposableHelper.setOnce(this, d); } @Override public void onSuccess(T value) { SubscriptionHelper.cancel(other); if (getAndSet(DisposableHelper.DISPOSED) != DisposableHelper.DISPOSED) { downstream.onSuccess(value); } } @Override public void onError(Throwable e) { SubscriptionHelper.cancel(other); if (getAndSet(DisposableHelper.DISPOSED) != DisposableHelper.DISPOSED) { downstream.onError(e); } else { RxJavaPlugins.onError(e); } } @Override public void onComplete() { SubscriptionHelper.cancel(other); if (getAndSet(DisposableHelper.DISPOSED) != DisposableHelper.DISPOSED) { downstream.onComplete(); } } void otherError(Throwable e) { if (DisposableHelper.dispose(this)) { downstream.onError(e); } else { RxJavaPlugins.onError(e); } } void otherComplete() { if (DisposableHelper.dispose(this)) { downstream.onComplete(); } } static final class TakeUntilOtherMaybeObserver<U> extends AtomicReference<Subscription> implements FlowableSubscriber<U> { private static final long serialVersionUID = -1266041316834525931L; final TakeUntilMainMaybeObserver<?, U> parent; TakeUntilOtherMaybeObserver(TakeUntilMainMaybeObserver<?, U> parent) { this.parent = parent; } @Override public void onSubscribe(Subscription s) { SubscriptionHelper.setOnce(this, s, Long.MAX_VALUE); } @Override public void onNext(Object value) { SubscriptionHelper.cancel(this); parent.otherComplete(); } @Override public void onError(Throwable e) { parent.otherError(e); } @Override public void onComplete() { parent.otherComplete(); } } } }