TupleProjectionAccessor.cpp

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00001 /*
00002 // $Id: //open/dev/fennel/tuple/TupleProjectionAccessor.cpp#8 $
00003 // Fennel is a library of data storage and processing components.
00004 // Copyright (C) 2005-2009 The Eigenbase Project
00005 // Copyright (C) 2005-2009 SQLstream, Inc.
00006 // Copyright (C) 2005-2009 LucidEra, Inc.
00007 // Portions Copyright (C) 1999-2009 John V. Sichi
00008 //
00009 // This program is free software; you can redistribute it and/or modify it
00010 // under the terms of the GNU General Public License as published by the Free
00011 // Software Foundation; either version 2 of the License, or (at your option)
00012 // any later version approved by The Eigenbase Project.
00013 //
00014 // This program is distributed in the hope that it will be useful,
00015 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00016 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00017 // GNU General Public License for more details.
00018 //
00019 // You should have received a copy of the GNU General Public License
00020 // along with this program; if not, write to the Free Software
00021 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00022 */
00023 
00024 #include "fennel/common/CommonPreamble.h"
00025 #include "fennel/tuple/TupleAccessor.h"
00026 #include "fennel/tuple/TupleProjectionAccessor.h"
00027 #include "fennel/tuple/TupleDescriptor.h"
00028 #include "fennel/tuple/TupleData.h"
00029 #include "fennel/tuple/AttributeAccessor.h"
00030 
00031 FENNEL_BEGIN_CPPFILE("$Id: //open/dev/fennel/tuple/TupleProjectionAccessor.cpp#8 $");
00032 TupleProjectionAccessor::TupleProjectionAccessor()
00033 {
00034     pTupleAccessor = NULL;
00035 }
00036 
00037 TupleProjectionAccessor::~TupleProjectionAccessor()
00038 {
00039 }
00040 
00041 void TupleProjectionAccessor::bind(
00042     TupleAccessor const &tupleAccessor,
00043     TupleProjection const &tupleProjection)
00044 {
00045     pTupleAccessor = &tupleAccessor;
00046     ppAttributeAccessors.clear();
00047     for (uint i = 0; i < tupleProjection.size(); ++i) {
00048         ppAttributeAccessors.push_back(
00049             &(tupleAccessor.getAttributeAccessor(tupleProjection[i])));
00050     }
00051 }
00052 
00053 void TupleProjectionAccessor::unmarshal(TupleData::iterator tupleIter) const
00054 {
00055     for (uint i = 0; i < ppAttributeAccessors.size(); ++i, ++tupleIter) {
00056         ppAttributeAccessors[i]->unmarshalValue(
00057             *pTupleAccessor,
00058             *tupleIter);
00059     }
00060 }
00061 
00062 FENNEL_END_CPPFILE("$Id: //open/dev/fennel/tuple/TupleProjectionAccessor.cpp#8 $");
00063 
00064 // End TupleProjectionAccessor.cpp

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