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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.mixed;
import java.util.concurrent.atomic.AtomicReference;
import io.reactivex.*;
import io.reactivex.disposables.Disposable;
import io.reactivex.internal.disposables.DisposableHelper;
/**
* After Completable completes, it relays the signals
* of the ObservableSource to the downstream observer.
*
* @param the result type of the ObservableSource and this operator
* @since 2.1.15
*/
public final class CompletableAndThenObservable extends Observable {
final CompletableSource source;
final ObservableSource extends R> other;
public CompletableAndThenObservable(CompletableSource source,
ObservableSource extends R> other) {
this.source = source;
this.other = other;
}
@Override
protected void subscribeActual(Observer super R> observer) {
AndThenObservableObserver parent = new AndThenObservableObserver(observer, other);
observer.onSubscribe(parent);
source.subscribe(parent);
}
static final class AndThenObservableObserver
extends AtomicReference
implements Observer, CompletableObserver, Disposable {
private static final long serialVersionUID = -8948264376121066672L;
final Observer super R> downstream;
ObservableSource extends R> other;
AndThenObservableObserver(Observer super R> downstream, ObservableSource extends R> other) {
this.other = other;
this.downstream = downstream;
}
@Override
public void onNext(R t) {
downstream.onNext(t);
}
@Override
public void onError(Throwable t) {
downstream.onError(t);
}
@Override
public void onComplete() {
ObservableSource extends R> o = other;
if (o == null) {
downstream.onComplete();
} else {
other = null;
o.subscribe(this);
}
}
@Override
public void dispose() {
DisposableHelper.dispose(this);
}
@Override
public boolean isDisposed() {
return DisposableHelper.isDisposed(get());
}
@Override
public void onSubscribe(Disposable d) {
DisposableHelper.replace(this, d);
}
}
}
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