Source code

001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *   http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing,
013 * software distributed under the License is distributed on an
014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 * KIND, either express or implied.  See the License for the
016 * specific language governing permissions and limitations
017 * under the License.
018 */
019package org.apache.reef.wake.examples.join;
020
021import org.apache.reef.wake.rx.Observer;
022
023/**
024 * Event printer.
025 *
026 * @param <T> the type of the event
027 */
028public class EventPrinter<T> implements Observer<T> {
029
030  @Override
031  public void onNext(final T value) {
032    System.out.println(this + ": " + value);
033  }
034
035  @Override
036  public void onError(final Exception error) {
037    System.err.println(this + ": " + error);
038  }
039
040  @Override
041  public void onCompleted() {
042    System.out.println(this + ": done!");
043  }
044}