/**
* 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.Operator;
import rx.Scheduler;
import rx.Subscriber;
import rx.schedulers.Timestamped;
/**
* Wraps each item emitted by a source {@code Observable} in a {@link Timestamped} object.
* <p>
* <img width="640" height="310" src="https://raw.githubusercontent.com/wiki/Netflix/RxJava/images/rx-operators/timestamp.png" alt="">
*/
public final class OperatorTimestamp<T> implements Operator<Timestamped<T>, T> {
private final Scheduler scheduler;
public OperatorTimestamp(Scheduler scheduler) {
this.scheduler = scheduler;
}
/**
* @return a sequence of timestamped values created by adding timestamps to each item in the input sequence.
*/
@Override
public Subscriber<? super T> call(final Subscriber<? super Timestamped<T>> o) {
return new Subscriber<T>(o) {
@Override
public void onCompleted() {
o.onCompleted();
}
@Override
public void onError(Throwable e) {
o.onError(e);
}
@Override
public void onNext(T t) {
o.onNext(new Timestamped<T>(scheduler.now(), t));
}
};
}
}