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.io.storage.util;
020
021import org.apache.reef.exception.evaluator.ServiceException;
022import org.apache.reef.io.Accumulable;
023import org.apache.reef.io.Accumulator;
024import org.apache.reef.io.serialization.Serializer;
025
026import java.io.DataOutputStream;
027import java.io.IOException;
028import java.io.OutputStream;
029
030public class IntegerSerializer implements
031    Serializer<Integer, OutputStream> {
032  @Override
033  public Accumulable<Integer> create(final OutputStream arg) {
034    final DataOutputStream dos = new DataOutputStream(arg);
035    return new Accumulable<Integer>() {
036
037      @Override
038      public Accumulator<Integer> accumulator() throws ServiceException {
039        return new Accumulator<Integer>() {
040          @Override
041          public void add(final Integer datum) throws ServiceException {
042            try {
043              dos.writeInt(datum);
044            } catch (final IOException e) {
045              throw new ServiceException(e);
046            }
047          }
048
049          @Override
050          public void close() throws ServiceException {
051            try {
052              dos.close();
053            } catch (final IOException e) {
054              throw new ServiceException(e);
055            }
056          }
057
058        };
059      }
060    };
061  }
062}