rx.internal.operators.OperatorDoAfterTerminate Maven / Gradle / Ivy
/**
* 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.exceptions.Exceptions;
import rx.functions.Action0;
import rx.plugins.RxJavaHooks;
/**
* Registers an action to be called after an Observable invokes {@code onComplete} or {@code onError}.
*
* 
*
* See also the MSDN Observable.Finally
* method
*
* @param the value type
*/
public final class OperatorDoAfterTerminate implements Operator {
final Action0 action;
public OperatorDoAfterTerminate(Action0 action) {
if (action == null) {
throw new NullPointerException("Action can not be null");
}
this.action = action;
}
@Override
public Subscriber call(final Subscriber child) {
return new Subscriber(child) {
@Override
public void onNext(T t) {
child.onNext(t);
}
@Override
public void onError(Throwable e) {
try {
child.onError(e);
} finally {
callAction();
}
}
@Override
public void onCompleted() {
try {
child.onCompleted();
} finally {
callAction();
}
}
void callAction() {
try {
action.call();
} catch (Throwable ex) {
Exceptions.throwIfFatal(ex);
RxJavaHooks.onError(ex);
}
}
};
}
}