/**
* Copyright 2014 Netflix, Inc.
*
* 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 rx.internal.operators;
import rx.Observable;
import rx.Observable.Operator;
import rx.Subscriber;
import rx.exceptions.OnErrorThrowable;
import rx.functions.Func1;
import rx.plugins.RxJavaPlugins;
/**
* Allows inserting onNext events into a stream when onError events are received
* and continuing the original sequence instead of terminating. Thus it allows a sequence
* with multiple onError events.
*/
public final class OperatorOnErrorFlatMap<T> implements Operator<T, T> {
private final Func1<OnErrorThrowable, ? extends Observable<? extends T>> resumeFunction;
public OperatorOnErrorFlatMap(Func1<OnErrorThrowable, ? extends Observable<? extends T>> f) {
this.resumeFunction = f;
}
@Override
public Subscriber<? super T> call(final Subscriber<? super T> child) {
return new Subscriber<T>(child) {
@Override
public void onCompleted() {
child.onCompleted();
}
@Override
public void onError(Throwable e) {
try {
RxJavaPlugins.getInstance().getErrorHandler().handleError(e);
Observable<? extends T> resume = resumeFunction.call(OnErrorThrowable.from(e));
resume.unsafeSubscribe(new Subscriber<T>() {
@Override
public void onCompleted() {
// ignore as we will continue the parent Observable
}
@Override
public void onError(Throwable e) {
// if the splice also fails we shut it all down
child.onError(e);
}
@Override
public void onNext(T t) {
child.onNext(t);
}
});
} catch (Throwable e2) {
child.onError(e2);
}
}
@Override
public void onNext(T t) {
child.onNext(t);
}
};
}
}