io.reactivex.internal.operators.maybe.MaybeOnErrorNext Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of rxjava Show documentation
Show all versions of rxjava Show documentation
Reactive Extensions for Java
The newest version!
/**
* 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.maybe;
import java.util.concurrent.atomic.AtomicReference;
import io.reactivex.*;
import io.reactivex.disposables.Disposable;
import io.reactivex.exceptions.*;
import io.reactivex.functions.Function;
import io.reactivex.internal.disposables.DisposableHelper;
import io.reactivex.internal.functions.ObjectHelper;
/**
* Subscribes to the MaybeSource returned by a function if the main source signals an onError.
*
* @param the value type
*/
public final class MaybeOnErrorNext extends AbstractMaybeWithUpstream {
final Function> resumeFunction;
final boolean allowFatal;
public MaybeOnErrorNext(MaybeSource source,
Function> resumeFunction,
boolean allowFatal) {
super(source);
this.resumeFunction = resumeFunction;
this.allowFatal = allowFatal;
}
@Override
protected void subscribeActual(MaybeObserver observer) {
source.subscribe(new OnErrorNextMaybeObserver(observer, resumeFunction, allowFatal));
}
static final class OnErrorNextMaybeObserver
extends AtomicReference
implements MaybeObserver, Disposable {
private static final long serialVersionUID = 2026620218879969836L;
final MaybeObserver downstream;
final Function> resumeFunction;
final boolean allowFatal;
OnErrorNextMaybeObserver(MaybeObserver actual,
Function> resumeFunction,
boolean allowFatal) {
this.downstream = actual;
this.resumeFunction = resumeFunction;
this.allowFatal = allowFatal;
}
@Override
public void dispose() {
DisposableHelper.dispose(this);
}
@Override
public boolean isDisposed() {
return DisposableHelper.isDisposed(get());
}
@Override
public void onSubscribe(Disposable d) {
if (DisposableHelper.setOnce(this, d)) {
downstream.onSubscribe(this);
}
}
@Override
public void onSuccess(T value) {
downstream.onSuccess(value);
}
@Override
public void onError(Throwable e) {
if (!allowFatal && !(e instanceof Exception)) {
downstream.onError(e);
return;
}
MaybeSource m;
try {
m = ObjectHelper.requireNonNull(resumeFunction.apply(e), "The resumeFunction returned a null MaybeSource");
} catch (Throwable ex) {
Exceptions.throwIfFatal(ex);
downstream.onError(new CompositeException(e, ex));
return;
}
DisposableHelper.replace(this, null);
m.subscribe(new NextMaybeObserver(downstream, this));
}
@Override
public void onComplete() {
downstream.onComplete();
}
static final class NextMaybeObserver implements MaybeObserver {
final MaybeObserver downstream;
final AtomicReference upstream;
NextMaybeObserver(MaybeObserver actual, AtomicReference d) {
this.downstream = actual;
this.upstream = d;
}
@Override
public void onSubscribe(Disposable d) {
DisposableHelper.setOnce(this.upstream, d);
}
@Override
public void onSuccess(T value) {
downstream.onSuccess(value);
}
@Override
public void onError(Throwable e) {
downstream.onError(e);
}
@Override
public void onComplete() {
downstream.onComplete();
}
}
}
}