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.vortex.examples.sumones;
020
021import org.apache.reef.io.serialization.Codec;
022import org.apache.reef.io.serialization.SerializableCodec;
023import org.apache.reef.vortex.api.VortexFunction;
024
025/**
026 * Identity function.
027 */
028public final class IdentityFunction implements VortexFunction<Integer, Integer> {
029  private static final Codec<Integer> CODEC = new SerializableCodec<>();
030
031  /**
032   * Outputs input.
033   */
034  @Override
035  public Integer call(final Integer input) throws Exception {
036    return input;
037  }
038
039  @Override
040  public Codec<Integer> getInputCodec() {
041    return CODEC;
042  }
043
044  @Override
045  public Codec<Integer> getOutputCodec() {
046    return CODEC;
047  }
048}