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Reactive Extensions for Java
/**
* 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.completable;
import java.util.concurrent.atomic.AtomicReference;
import io.reactivex.*;
import io.reactivex.disposables.Disposable;
import io.reactivex.internal.disposables.DisposableHelper;
public final class CompletableAndThenCompletable extends Completable {
final CompletableSource source;
final CompletableSource next;
public CompletableAndThenCompletable(CompletableSource source, CompletableSource next) {
this.source = source;
this.next = next;
}
@Override
protected void subscribeActual(CompletableObserver observer) {
source.subscribe(new SourceObserver(observer, next));
}
static final class SourceObserver
extends AtomicReference
implements CompletableObserver, Disposable {
private static final long serialVersionUID = -4101678820158072998L;
final CompletableObserver actualObserver;
final CompletableSource next;
SourceObserver(CompletableObserver actualObserver, CompletableSource next) {
this.actualObserver = actualObserver;
this.next = next;
}
@Override
public void onSubscribe(Disposable d) {
if (DisposableHelper.setOnce(this, d)) {
actualObserver.onSubscribe(this);
}
}
@Override
public void onError(Throwable e) {
actualObserver.onError(e);
}
@Override
public void onComplete() {
next.subscribe(new NextObserver(this, actualObserver));
}
@Override
public void dispose() {
DisposableHelper.dispose(this);
}
@Override
public boolean isDisposed() {
return DisposableHelper.isDisposed(get());
}
}
static final class NextObserver implements CompletableObserver {
final AtomicReference parent;
final CompletableObserver downstream;
public NextObserver(AtomicReference parent, CompletableObserver downstream) {
this.parent = parent;
this.downstream = downstream;
}
@Override
public void onSubscribe(Disposable d) {
DisposableHelper.replace(parent, d);
}
@Override
public void onComplete() {
downstream.onComplete();
}
@Override
public void onError(Throwable e) {
downstream.onError(e);
}
}
}
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