/**
* 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;
import rx.functions.Action0;
/**
* Registers an action to be called after an Observable invokes {@code onComplete} or {@code onError}.
* <p>
* <img width="640" src="https://github.com/Netflix/RxJava/wiki/images/rx-operators/finallyDo.png" alt="">
* <p>
* See also the <a href="http://msdn.microsoft.com/en-us/library/hh212133.aspx">MSDN Observable.Finally
* method</a>
*
* @param <T> the value type
*/
public final class OperatorFinally<T> implements Operator<T, T> {
final Action0 action;
public OperatorFinally(Action0 action) {
this.action = action;
}
@Override
public Subscriber<? super T> call(final Subscriber<? super T> child) {
return new Subscriber<T>(child) {
@Override
public void onNext(T t) {
child.onNext(t);
}
@Override
public void onError(Throwable e) {
try {
child.onError(e);
} finally {
action.call();
}
}
@Override
public void onCompleted() {
try {
child.onCompleted();
} finally {
action.call();
}
}
};
}
}