    001    /*
    002     * Copyright (c) 2007-2014 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
    021    package cascading.tuple.hadoop.io;
    022
    023    import java.io.IOException;
    024
    025    import cascading.tuple.hadoop.TupleSerialization;
    026    import cascading.tuple.io.IndexTuple;
    027
    028    public class IndexTupleDeserializer extends BaseDeserializer<IndexTuple>
    029      {
    030      public IndexTupleDeserializer( TupleSerialization.SerializationElementReader elementReader )
    031        {
    032        super( elementReader );
    033        }
    034
    035      public IndexTuple deserialize( IndexTuple indexTuple ) throws IOException
    036        {
    037        if( indexTuple == null )
    038          return inputStream.readIndexTuple();
    039
    040        return inputStream.readIndexTuple( indexTuple );
    041        }
    042      }