rx.internal.operators.CompletableFlatMapSingleToCompletable Maven / Gradle / Ivy
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/**
* Copyright 2016 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.Completable;
import rx.Completable.OnSubscribe;
import rx.CompletableSubscriber;
import rx.Single;
import rx.SingleSubscriber;
import rx.Subscription;
import rx.exceptions.Exceptions;
import rx.functions.Func1;
public final class CompletableFlatMapSingleToCompletable implements OnSubscribe {
final Single source;
final Func1 mapper;
public CompletableFlatMapSingleToCompletable(Single source, Func1 mapper) {
this.source = source;
this.mapper = mapper;
}
@Override
public void call(CompletableSubscriber t) {
SourceSubscriber parent = new SourceSubscriber(t, mapper);
t.onSubscribe(parent);
source.subscribe(parent);
}
static final class SourceSubscriber extends SingleSubscriber implements CompletableSubscriber {
final CompletableSubscriber actual;
final Func1 mapper;
public SourceSubscriber(CompletableSubscriber actual, Func1 mapper) {
this.actual = actual;
this.mapper = mapper;
}
@Override
public void onSuccess(T value) {
Completable c;
try {
c = mapper.call(value);
} catch (Throwable ex) {
Exceptions.throwIfFatal(ex);
onError(ex);
return;
}
if (c == null) {
onError(new NullPointerException("The mapper returned a null Completable"));
return;
}
c.subscribe(this);
}
@Override
public void onError(Throwable error) {
actual.onError(error);
}
@Override
public void onCompleted() {
actual.onCompleted();
}
@Override
public void onSubscribe(Subscription d) {
add(d);
}
}
}