    001/*
    002 * Copyright (c) 2007-2016 Concurrent, Inc. All Rights Reserved.
    003 *
    004 * Project and contact information: http://www.cascading.org/
    005 *
    006 * This file is part of the Cascading project.
    007 *
    008 * Licensed under the Apache License, Version 2.0 (the "License");
    009 * you may not use this file except in compliance with the License.
    010 * You may obtain a copy of the License at
    011 *
    012 *     http://www.apache.org/licenses/LICENSE-2.0
    013 *
    014 * Unless required by applicable law or agreed to in writing, software
    015 * distributed under the License is distributed on an "AS IS" BASIS,
    016 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    017 * See the License for the specific language governing permissions and
    018 * limitations under the License.
    019 */
    020
    021package cascading.tap.hadoop.io;
    022
    023import java.io.IOException;
    024
    025import cascading.util.SingleValueCloseableIterator;
    026import org.apache.hadoop.mapred.RecordReader;
    027
    028/**
    029 * RecordReaderIterator is a utility class for handing off a single {@link RecordReader} instance
    030 * via the {@link java.util.Iterator}.
    031 * <p/>
    032 * This class is frequently used with the {@link cascading.tuple.TupleEntrySchemeIterator} where there is only
    033 * one RecordReader to iterate values over.
    034 */
    035public class RecordReaderIterator extends SingleValueCloseableIterator<RecordReader>
    036  {
    037  public RecordReaderIterator( RecordReader reader )
    038    {
    039    super( reader );
    040    }
    041
    042  @Override
    043  public void close() throws IOException
    044    {
    045    getCloseableInput().close();
    046    }
    047  }