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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_scan_hpp
#define ODBC_CODEGEN_Code_query_scan_hpp
#include <common/common.hpp>
#include "Code_query.hpp"
#include "Code_table.hpp"
#include "Code_pred.hpp"
class Ctx;
class StmtArea;
class NdbConnection;
class NdbOperation;
class NdbRecAttr;
/*
* Table scan.
*/
class Plan_query_scan : public Plan_query {
public:
Plan_query_scan(Plan_root* root);
virtual ~Plan_query_scan();
Plan_base* analyze(Ctx& ctx, Ctl& ctl);
Exec_base* codegen(Ctx& ctx, Ctl& ctl);
void print(Ctx& ctx);
void setTable(Plan_table* table);
void setInterp(Plan_pred* interp);
void setExclusive();
protected:
Plan_table* m_table;
Plan_pred* m_interp;
bool m_exclusive; // exclusive
};
inline
Plan_query_scan::Plan_query_scan(Plan_root* root) :
Plan_query(root),
m_table(0),
m_interp(0),
m_exclusive(false)
{
}
inline void
Plan_query_scan::setTable(Plan_table* table)
{
ctx_assert(table != 0);
m_table = table;
}
inline void
Plan_query_scan::setInterp(Plan_pred* interp)
{
ctx_assert(interp != 0);
m_interp = interp;
}
inline void
Plan_query_scan::setExclusive()
{
m_exclusive = true;
}
class Exec_query_scan : public Exec_query {
public:
class Code : public Exec_query::Code {
public:
Code(unsigned attrCount);
virtual ~Code();
protected:
friend class Plan_query_scan;
friend class Exec_query_scan;
char* m_tableName;
unsigned m_attrCount;
SqlSpecs m_sqlSpecs;
NdbAttrId* m_attrId;
bool m_exclusive;
};
class Data : public Exec_query::Data {
public:
Data(Exec_query_scan* node, const SqlSpecs& sqlSpecs);
virtual ~Data();
protected:
friend class Exec_query_scan;
SqlRow m_sqlRow;
NdbConnection* m_con;
NdbOperation* m_op;
NdbRecAttr** m_recAttr;
unsigned m_parallel; // parallelism could be runtime option
};
Exec_query_scan(Exec_root* root);
virtual ~Exec_query_scan();
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;
void setInterp(Exec_pred* interp);
protected:
Exec_pred* m_interp;
};
inline
Exec_query_scan::Code::Code(unsigned attrCount) :
Exec_query::Code(m_sqlSpecs),
m_tableName(0),
m_attrCount(attrCount),
m_sqlSpecs(attrCount),
m_attrId(0),
m_exclusive(false)
{
}
inline
Exec_query_scan::Data::Data(Exec_query_scan* node, const SqlSpecs& sqlSpecs) :
Exec_query::Data(node, m_sqlRow),
m_sqlRow(sqlSpecs),
m_con(0),
m_op(0),
m_recAttr(0),
m_parallel(1)
{
}
inline
Exec_query_scan::Exec_query_scan(Exec_root* root) :
Exec_query(root),
m_interp(0)
{
}
// children
inline const Exec_query_scan::Code&
Exec_query_scan::getCode() const
{
const Code* code = static_cast<const Code*>(m_code);
return *code;
}
inline Exec_query_scan::Data&
Exec_query_scan::getData() const
{
Data* data = static_cast<Data*>(m_data);
return *data;
}
inline void
Exec_query_scan::setInterp(Exec_pred* interp)
{
ctx_assert(interp != 0);
m_interp = interp;
}
#endif
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