ExecStreamBuilder.h

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/*
// $Id: //open/dev/fennel/farrago/ExecStreamBuilder.h#14 $
// Fennel is a library of data storage and processing components.
// Copyright (C) 2005-2009 The Eigenbase Project
// Copyright (C) 2003-2009 SQLstream, Inc.
// Copyright (C) 2005-2009 LucidEra, Inc.
// Portions Copyright (C) 1999-2009 John V. Sichi
//
// 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_ExecStreamBuilder_Included
#define Fennel_ExecStreamBuilder_Included

#include "fennel/common/ClosableObject.h"
#include "fennel/farrago/ExecStreamFactory.h"
#include "fennel/farrago/Fem.h"
#include "fennel/exec/ExecStream.h"
#include "fennel/exec/ExecStreamGraphEmbryo.h"

#include <boost/utility.hpp>

FENNEL_BEGIN_NAMESPACE

class FENNEL_FARRAGO_EXPORT ExecStreamBuilder
    : public boost::noncopyable
{
    ExecStreamGraphEmbryo &graphEmbryo;

    ExecStreamFactory &streamFactory;

    void buildStream(
        ProxyExecutionStreamDef &);

    void buildStreamInputs(
        ProxyExecutionStreamDef &streamDef);

    int getExplicitOutputCount(
        ProxyExecutionStreamDef &streamDef);

    void buildStreamOutputs(
        ProxyExecutionStreamDef &streamDef);

public:
    explicit ExecStreamBuilder(
        ExecStreamGraphEmbryo &graphEmbryo,
        ExecStreamFactory &streamFactory);

    virtual ~ExecStreamBuilder();

    void buildStreamGraph(
        ProxyCmdPrepareExecutionStreamGraph &cmd,
        bool assumeOutputFromSinks);
};

FENNEL_END_NAMESPACE

#endif

// End ExecStreamBuilder.h

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