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rxjava-core developed by Netflix
/**
* 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.operators;
import rx.Observable;
import rx.Observable.Operator;
import rx.Scheduler;
import rx.Scheduler.Inner;
import rx.Subscriber;
import rx.functions.Action1;
import rx.observers.Subscribers;
import rx.schedulers.Schedulers;
public class OperatorRepeat implements Operator> {
private final Scheduler scheduler;
private final long count;
public OperatorRepeat(long count, Scheduler scheduler) {
this.scheduler = scheduler;
this.count = count;
}
public OperatorRepeat(Scheduler scheduler) {
this(-1, scheduler);
}
public OperatorRepeat(long count) {
this(count, Schedulers.trampoline());
}
public OperatorRepeat() {
this(-1, Schedulers.trampoline());
}
@Override
public Subscriber super Observable> call(final Subscriber super T> child) {
if (count == 0) {
child.onCompleted();
return Subscribers.empty();
}
return new Subscriber>(child) {
int executionCount = 0;
@Override
public void onCompleted() {
// ignore as we will keep repeating
}
@Override
public void onError(Throwable e) {
// we should never receive this but if we do we pass it on
child.onError(new IllegalStateException("Error received on nested Observable.", e));
}
@Override
public void onNext(final Observable t) {
scheduler.schedule(new Action1() {
final Action1 self = this;
@Override
public void call(final Inner inner) {
executionCount++;
t.subscribe(new Subscriber(child) {
@Override
public void onCompleted() {
if (count == -1 || executionCount < count) {
inner.schedule(self);
} else {
child.onCompleted();
}
}
@Override
public void onError(Throwable e) {
child.onError(e);
}
@Override
public void onNext(T t) {
child.onNext(t);
}
});
}
});
}
};
}
}
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