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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_CodeGen_hpp
#define ODBC_CODEGEN_CodeGen_hpp
#include <common/common.hpp>
class StmtArea;
class SqlField;
class ExtField;
/**
* @class CodeGen
* @brief Compiles SQL text into ExecTree::Code
*/
class CodeGen {
public:
CodeGen(StmtArea& stmtArea);
~CodeGen();
// parse and analyze SQL statement
void prepare(Ctx& ctx);
// these are passed to Executor
void execute(Ctx& ctx);
void fetch(Ctx& ctx);
// close statement (mainly scan)
void close(Ctx& ctx);
// free data structures
void free(Ctx& ctx);
// odbc support
void sqlGetData(Ctx& ctx, SQLUSMALLINT columnNumber, SQLSMALLINT targetType, SQLPOINTER targetValue, SQLINTEGER bufferLength, SQLINTEGER* strlen_or_Ind);
void sqlParamData(Ctx& ctx, SQLPOINTER* value);
void sqlPutData(Ctx& ctx, SQLPOINTER data, SQLINTEGER strlen_or_Ind);
private:
void parse(Ctx& ctx);
void analyze(Ctx& ctx);
void describe(Ctx& ctx);
void codegen(Ctx& ctx);
void alloc(Ctx& ctx);
void freePlan(Ctx& ctx);
void freeExec(Ctx& ctx);
StmtArea& m_stmtArea;
};
inline
CodeGen::CodeGen(StmtArea& stmtArea) :
m_stmtArea(stmtArea)
{
}
inline
CodeGen::~CodeGen()
{
}
#endif
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