rx.internal.operators.OperatorDematerialize Maven / Gradle / Ivy
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/**
* 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.Notification;
import rx.Observable.Operator;
import rx.Subscriber;
/**
* Reverses the effect of {@link OperatorMaterialize} by transforming the Notification objects
* emitted by a source Observable into the items or notifications they represent.
*
* 
*
* See here for the
* Microsoft Rx equivalent.
*
* @param the wrapped value type
*/
public final class OperatorDematerialize implements Operator> {
@Override
public Subscriber> call(final Subscriber child) {
return new Subscriber>(child) {
/** Do not send two onCompleted events. */
boolean terminated;
@Override
public void onNext(Notification t) {
switch (t.getKind()) {
case OnNext:
if (!terminated) {
child.onNext(t.getValue());
}
break;
case OnError:
onError(t.getThrowable());
break;
case OnCompleted:
onCompleted();
break;
}
}
@Override
public void onError(Throwable e) {
if (!terminated) {
terminated = true;
child.onError(e);
}
}
@Override
public void onCompleted() {
if (!terminated) {
terminated = true;
child.onCompleted();
}
}
};
}
}