SplitterExecStream.h

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00001 /*
00002 // $Id: //open/dev/fennel/exec/SplitterExecStream.h#6 $
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) 2004-2009 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 #ifndef Fennel_SplitterExecStream_Included
00025 #define Fennel_SplitterExecStream_Included
00026 
00027 #include "fennel/exec/DiffluenceExecStream.h"
00028 
00029 FENNEL_BEGIN_NAMESPACE
00030 
00034 struct FENNEL_EXEC_EXPORT SplitterExecStreamParams
00035     : public DiffluenceExecStreamParams
00036 {
00037 };
00038 
00049 class FENNEL_EXEC_EXPORT SplitterExecStream
00050     : public DiffluenceExecStream
00051 {
00055     uint iOutput;
00056 
00060     PConstBuffer pLastConsumptionEnd;
00061 
00062 public:
00063     // implement ExecStream
00064     virtual void open(bool restart);
00065     virtual ExecStreamResult execute(ExecStreamQuantum const &quantum);
00066 
00067     // override DiffluenceExecStream
00068     virtual ExecStreamBufProvision getOutputBufProvision() const;
00069 };
00070 
00071 FENNEL_END_NAMESPACE
00072 
00073 #endif
00074 
00075 // End SplitterExecStream.h

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