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 }