io.reactivex.rxjava3.internal.operators.completable.CompletableDetach Maven / Gradle / Ivy
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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.
*/
package io.reactivex.rxjava3.internal.operators.completable;
import io.reactivex.rxjava3.core.*;
import io.reactivex.rxjava3.disposables.Disposable;
import io.reactivex.rxjava3.internal.disposables.DisposableHelper;
/**
* Breaks the references between the upstream and downstream when the Completable terminates.
* History: 2.1.5 - experimental
* @since 2.2
*/
public final class CompletableDetach extends Completable {
final CompletableSource source;
public CompletableDetach(CompletableSource source) {
this.source = source;
}
@Override
protected void subscribeActual(CompletableObserver observer) {
source.subscribe(new DetachCompletableObserver(observer));
}
static final class DetachCompletableObserver implements CompletableObserver, Disposable {
CompletableObserver downstream;
Disposable upstream;
DetachCompletableObserver(CompletableObserver downstream) {
this.downstream = downstream;
}
@Override
public void dispose() {
downstream = null;
upstream.dispose();
upstream = DisposableHelper.DISPOSED;
}
@Override
public boolean isDisposed() {
return upstream.isDisposed();
}
@Override
public void onSubscribe(Disposable d) {
if (DisposableHelper.validate(this.upstream, d)) {
this.upstream = d;
downstream.onSubscribe(this);
}
}
@Override
public void onError(Throwable e) {
upstream = DisposableHelper.DISPOSED;
CompletableObserver a = downstream;
if (a != null) {
downstream = null;
a.onError(e);
}
}
@Override
public void onComplete() {
upstream = DisposableHelper.DISPOSED;
CompletableObserver a = downstream;
if (a != null) {
downstream = null;
a.onComplete();
}
}
}
}