/**
* 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.observable;
import java.util.concurrent.atomic.
AtomicReference;
import io.reactivex.*;
import io.reactivex.disposables.
Disposable;
import io.reactivex.internal.disposables.
DisposableHelper;
/**
* Subscribe to a main Observable first, then when it completes normally, subscribe to a Single,
* signal its success value followed by a completion or signal its error as is.
* <p>History: 2.1.10 - experimental
* @param <T> the element type of the main source and output type
* @since 2.2
*/
public final class
ObservableConcatWithCompletable<T> extends
AbstractObservableWithUpstream<T, T> {
final
CompletableSource other;
public
ObservableConcatWithCompletable(
Observable<T>
source,
CompletableSource other) {
super(
source);
this.
other =
other;
}
@
Override
protected void
subscribeActual(
Observer<? super T>
observer) {
source.
subscribe(new
ConcatWithObserver<T>(
observer,
other));
}
static final class
ConcatWithObserver<T>
extends
AtomicReference<
Disposable>
implements
Observer<T>,
CompletableObserver,
Disposable {
private static final long
serialVersionUID = -1953724749712440952L;
final
Observer<? super T>
downstream;
CompletableSource other;
boolean
inCompletable;
ConcatWithObserver(
Observer<? super T>
actual,
CompletableSource other) {
this.
downstream =
actual;
this.
other =
other;
}
@
Override
public void
onSubscribe(
Disposable d) {
if (
DisposableHelper.
setOnce(this,
d) && !
inCompletable) {
downstream.
onSubscribe(this);
}
}
@
Override
public void
onNext(T
t) {
downstream.
onNext(
t);
}
@
Override
public void
onError(
Throwable e) {
downstream.
onError(
e);
}
@
Override
public void
onComplete() {
if (
inCompletable) {
downstream.
onComplete();
} else {
inCompletable = true;
DisposableHelper.
replace(this, null);
CompletableSource cs =
other;
other = null;
cs.
subscribe(this);
}
}
@
Override
public void
dispose() {
DisposableHelper.
dispose(this);
}
@
Override
public boolean
isDisposed() {
return
DisposableHelper.
isDisposed(
get());
}
}
}