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/* Copyright (C) 2003 MySQL AB
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.
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 ODBC_CODEGEN_CodeTree_hpp
#define ODBC_CODEGEN_CodeTree_hpp
#include <common/common.hpp>
/*
* Intermediary statement evalution plan. Starts as parse tree. Final
* format maps directly to ExecTree.
*/
class PlanTree {
public:
virtual ~PlanTree() = 0;
};
/*
* Executable code and runtime data. Currently looks like PlanTree.
* Later may change code format to linear "byte code" and move execution
* to a SQL block in NDB kernel.
*/
class ExecTree {
public:
class Code {
public:
virtual ~Code() = 0;
};
class Data {
public:
virtual ~Data() = 0;
};
virtual ~ExecTree() = 0;
};
#endif
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