    001/*
    002 * Copyright (c) 2007-2017 Xplenty, 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.tuple.hadoop.io;
    022
    023import java.io.IOException;
    024import java.util.Map;
    025
    026import cascading.tuple.hadoop.TupleSerialization;
    027import cascading.tuple.io.IndexTuple;
    028
    029public class IndexTupleSerializer<T extends IndexTuple> extends BaseSerializer<T>
    030  {
    031  protected Map<Integer, Class[]> typeMap;
    032
    033  public IndexTupleSerializer( TupleSerialization.SerializationElementWriter elementWriter )
    034    {
    035    super( elementWriter );
    036    }
    037
    038  public void serialize( T tuple ) throws IOException
    039    {
    040    outputStream.writeIntInternal( tuple.getIndex() );
    041
    042    Class[] types = getTypesFor( tuple.getIndex() );
    043
    044    if( types == null )
    045      outputStream.writeUnTyped( tuple.getTuple() );
    046    else
    047      outputStream.writeTyped( types, tuple.getTuple() );
    048    }
    049
    050  protected Class[] getTypesFor( int ordinal )
    051    {
    052    if( typeMap == null )
    053      return null;
    054
    055    return typeMap.get( ordinal );
    056    }
    057  }