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2.x: Add efficient mergeWith(Single|Maybe|Completable) overloads. (#5847
) * 2.x: Add efficient mergeWith(Single|Maybe|Completable) overloads. * Compact tests, use named constants
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src/main/java/io/reactivex/internal/operators/flowable/FlowableMergeWithCompletable.java
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| /** | ||
| * 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. | ||
| */ | ||
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| package io.reactivex.internal.operators.flowable; | ||
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| import java.util.concurrent.atomic.*; | ||
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| import org.reactivestreams.*; | ||
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| import io.reactivex.*; | ||
| import io.reactivex.disposables.Disposable; | ||
| import io.reactivex.internal.disposables.DisposableHelper; | ||
| import io.reactivex.internal.subscriptions.SubscriptionHelper; | ||
| import io.reactivex.internal.util.*; | ||
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| /** | ||
| * Merges a Flowable and a Completable by emitting the items of the Flowable and waiting until | ||
| * both the Flowable and Completable complete normally. | ||
| * | ||
| * @param <T> the element type of the Flowable | ||
| * @since 2.1.10 - experimental | ||
| */ | ||
| public final class FlowableMergeWithCompletable<T> extends AbstractFlowableWithUpstream<T, T> { | ||
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| final CompletableSource other; | ||
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| public FlowableMergeWithCompletable(Flowable<T> source, CompletableSource other) { | ||
| super(source); | ||
| this.other = other; | ||
| } | ||
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| @Override | ||
| protected void subscribeActual(Subscriber<? super T> observer) { | ||
| MergeWithSubscriber<T> parent = new MergeWithSubscriber<T>(observer); | ||
| observer.onSubscribe(parent); | ||
| source.subscribe(parent); | ||
| other.subscribe(parent.otherObserver); | ||
| } | ||
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| static final class MergeWithSubscriber<T> extends AtomicInteger | ||
| implements FlowableSubscriber<T>, Subscription { | ||
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| private static final long serialVersionUID = -4592979584110982903L; | ||
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| final Subscriber<? super T> actual; | ||
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| final AtomicReference<Subscription> mainSubscription; | ||
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| final OtherObserver otherObserver; | ||
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| final AtomicThrowable error; | ||
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| final AtomicLong requested; | ||
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| volatile boolean mainDone; | ||
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| volatile boolean otherDone; | ||
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| MergeWithSubscriber(Subscriber<? super T> actual) { | ||
| this.actual = actual; | ||
| this.mainSubscription = new AtomicReference<Subscription>(); | ||
| this.otherObserver = new OtherObserver(this); | ||
| this.error = new AtomicThrowable(); | ||
| this.requested = new AtomicLong(); | ||
| } | ||
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| @Override | ||
| public void onSubscribe(Subscription d) { | ||
| SubscriptionHelper.deferredSetOnce(mainSubscription, requested, d); | ||
| } | ||
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| @Override | ||
| public void onNext(T t) { | ||
| HalfSerializer.onNext(actual, t, this, error); | ||
| } | ||
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| @Override | ||
| public void onError(Throwable ex) { | ||
| SubscriptionHelper.cancel(mainSubscription); | ||
| HalfSerializer.onError(actual, ex, this, error); | ||
| } | ||
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| @Override | ||
| public void onComplete() { | ||
| mainDone = true; | ||
| if (otherDone) { | ||
| HalfSerializer.onComplete(actual, this, error); | ||
| } | ||
| } | ||
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| @Override | ||
| public void request(long n) { | ||
| SubscriptionHelper.deferredRequest(mainSubscription, requested, n); | ||
| } | ||
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| @Override | ||
| public void cancel() { | ||
| SubscriptionHelper.cancel(mainSubscription); | ||
| DisposableHelper.dispose(otherObserver); | ||
| } | ||
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| void otherError(Throwable ex) { | ||
| SubscriptionHelper.cancel(mainSubscription); | ||
| HalfSerializer.onError(actual, ex, this, error); | ||
| } | ||
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| void otherComplete() { | ||
| otherDone = true; | ||
| if (mainDone) { | ||
| HalfSerializer.onComplete(actual, this, error); | ||
| } | ||
| } | ||
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| static final class OtherObserver extends AtomicReference<Disposable> | ||
| implements CompletableObserver { | ||
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| private static final long serialVersionUID = -2935427570954647017L; | ||
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| final MergeWithSubscriber<?> parent; | ||
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| OtherObserver(MergeWithSubscriber<?> parent) { | ||
| this.parent = parent; | ||
| } | ||
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| @Override | ||
| public void onSubscribe(Disposable d) { | ||
| DisposableHelper.setOnce(this, d); | ||
| } | ||
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| @Override | ||
| public void onError(Throwable e) { | ||
| parent.otherError(e); | ||
| } | ||
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| @Override | ||
| public void onComplete() { | ||
| parent.otherComplete(); | ||
| } | ||
| } | ||
| } | ||
| } |
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