AggInvocation.h

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/*
// $Id: //open/dev/fennel/exec/AggInvocation.h#5 $
// Fennel is a library of data storage and processing components.
// Copyright (C) 2005-2009 The Eigenbase Project
// Copyright (C) 2005-2009 SQLstream, Inc.
// Copyright (C) 2005-2009 LucidEra, Inc.
//
// This program is free software; you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 2 of the License, or (at your option)
// any later version approved by The Eigenbase Project.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

#ifndef Fennel_AggInvocation_Included
#define Fennel_AggInvocation_Included

#include "fennel/common/FemEnums.h"

FENNEL_BEGIN_NAMESPACE

struct FENNEL_EXEC_EXPORT AggInvocation
{
    AggFunction aggFunction;

    // TODO jvs 6-Oct-2005: May need to generalize this to a
    // TupleProjection, since I think SQL:2003 allows SUM(A,B), producing
    // a ROW result value; need to check.
    int iInputAttr;
};

typedef std::vector<AggInvocation> AggInvocationList;
typedef std::vector<AggInvocation>::iterator AggInvocationIter;
typedef std::vector<AggInvocation>::const_iterator AggInvocationConstIter;

FENNEL_END_NAMESPACE

#endif

// End AggInvocation.h

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