ExecStreamGraphEmbryo.h

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/*
// $Id: //open/dev/fennel/exec/ExecStreamGraphEmbryo.h#14 $
// 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.
// Portions Copyright (C) 2004-2009 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_ExecStreamGraphEmbryo_Included
#define Fennel_ExecStreamGraphEmbryo_Included

#include "fennel/exec/ExecStreamDefs.h"

#include <boost/utility.hpp>
#include <map>

FENNEL_BEGIN_NAMESPACE

class FENNEL_EXEC_EXPORT ExecStreamGraphEmbryo
    : public boost::noncopyable
{
    typedef std::map<std::string,ExecStreamEmbryo> StreamMap;
    typedef StreamMap::const_iterator StreamMapConstIter;
    typedef StreamMap::iterator StreamMapIter;

    SharedExecStreamGraph pGraph;

    SharedExecStreamScheduler pScheduler;

    SharedCacheAccessor pCacheAccessor;

    SegmentAccessor scratchAccessor;

    StreamMap allStreamEmbryos;

    void initializeAdapter(
        ExecStreamEmbryo &embryo,
        std::string const &streamName,
        uint iOutput,
        std::string const &adapterName);

public:
    explicit ExecStreamGraphEmbryo(
        SharedExecStreamGraph pGraph,
        SharedExecStreamScheduler pScheduler,
        SharedCache pCache,
        SharedSegmentFactory pSegmentFactory);

    virtual ~ExecStreamGraphEmbryo();

    void initStreamParams(ExecStreamParams &params);

    ExecStreamGraph &getGraph();

    SegmentAccessor &getScratchAccessor();

    SharedExecStream addAdapterFor(
        const std::string &name,
        uint iOutput,
        ExecStreamBufProvision requiredDataFlow);

    void saveStreamEmbryo(
        ExecStreamEmbryo &embryo);

    ExecStreamEmbryo &getStreamEmbryo(
        const std::string &name);

    void addDataflow(
        const std::string &source,
        const std::string &target,
        bool isImplicit = false);

    void prepareGraph(
        SharedTraceTarget pTraceTarget,
        std::string const &tracePrefix);
};

FENNEL_END_NAMESPACE

#endif

// End ExecStreamGraphEmbryo.h

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