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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_Code_query_repeat_hpp
#define ODBC_CODEGEN_Code_query_repeat_hpp
#include <common/common.hpp>
#include "Code_query.hpp"
#include "Code_expr_row.hpp"
/**
* @class Plan_query_repeat
* @brief Constant query node in PlanTree
*/
class Plan_query_repeat : public Plan_query {
public:
Plan_query_repeat(Plan_root* root);
Plan_query_repeat(Plan_root* root, CountType maxcount);
virtual ~Plan_query_repeat();
Plan_base* analyze(Ctx& ctx, Ctl& ctl);
Exec_base* codegen(Ctx& ctx, Ctl& ctl);
void print(Ctx& ctx);
private:
bool m_forever;
CountType m_maxcount;
};
inline
Plan_query_repeat::Plan_query_repeat(Plan_root* root) :
Plan_query(root),
m_forever(true),
m_maxcount(0)
{
}
inline
Plan_query_repeat::Plan_query_repeat(Plan_root* root, CountType maxcount) :
Plan_query(root),
m_forever(false),
m_maxcount(maxcount)
{
}
/**
* @class Exec_query_repeat
* @brief Constant query node in ExecTree
*/
class Exec_query_repeat : public Exec_query {
public:
class Code : public Exec_query::Code {
public:
Code(const SqlSpecs& sqlSpecs, bool forever, CountType maxcount);
virtual ~Code();
protected:
friend class Exec_query_repeat;
SqlSpecs m_sqlSpecs;
bool m_forever;
CountType m_maxcount;
};
class Data : public Exec_query::Data {
public:
Data(Exec_query_repeat* node, const SqlSpecs& sqlSpecs);
virtual ~Data();
protected:
friend class Exec_query_repeat;
SqlRow m_sqlRow;
CountType m_count;
};
Exec_query_repeat(Exec_root* root);
virtual ~Exec_query_repeat();
void alloc(Ctx& ctx, Ctl& ctl);
void execImpl(Ctx& ctx, Ctl& ctl);
bool fetchImpl(Ctx& ctx, Ctl& ctl);
void close(Ctx& ctx);
void print(Ctx& ctx);
// children
const Code& getCode() const;
Data& getData() const;
};
inline
Exec_query_repeat::Code::Code(const SqlSpecs& sqlSpecs, bool forever, CountType maxcount) :
Exec_query::Code(m_sqlSpecs),
m_sqlSpecs(sqlSpecs),
m_forever(forever),
m_maxcount(maxcount)
{
}
inline
Exec_query_repeat::Data::Data(Exec_query_repeat* node, const SqlSpecs& sqlSpecs) :
Exec_query::Data(node, m_sqlRow),
m_sqlRow(sqlSpecs),
m_count(0)
{
}
inline
Exec_query_repeat::Exec_query_repeat(Exec_root* root) :
Exec_query(root)
{
}
// children
inline const Exec_query_repeat::Code&
Exec_query_repeat::getCode() const
{
const Code* code = static_cast<const Code*>(m_code);
return *code;
}
inline Exec_query_repeat::Data&
Exec_query_repeat::getData() const
{
Data* data = static_cast<Data*>(m_data);
return *data;
}
#endif
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