/**
* 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.Subscriber;
/**
* Hides the identity of another observable.
*
* @param <T>
* the return value type of the wrapped observable.
*/
public final class OperatorAsObservable<T> implements Operator<T, T> {
/** Lazy initialization via inner-class holder. */
private static final class Holder {
/** A singleton instance. */
static final OperatorAsObservable<Object> INSTANCE = new OperatorAsObservable<Object>();
}
/**
* @return a singleton instance of this stateless operator.
*/
@SuppressWarnings("unchecked")
public static <T> OperatorAsObservable<T> instance() {
return (OperatorAsObservable<T>)Holder.INSTANCE;
}
private OperatorAsObservable() { }
@Override
public Subscriber<? super T> call(Subscriber<? super T> s) {
return s;
}
}