mariadb/sql/sp_rcontext.h
pem@mysql.com aae07a4d45 Simplistic, experimental framework for Stored Procedures (SPs).
Implements creation and dropping of PROCEDUREs, IN, OUT, and INOUT parameters,
single-statement procedures, rudimentary multi-statement (begin-end) prodedures
(when the client can handle it), and local variables.
Missing most of the embedded SQL language, all attributes, FUNCTIONs, error handling,
reparses procedures at each call (no caching), etc, etc.
Certainly buggy too, but procedures can actually be created and called....
2002-12-08 19:59:22 +01:00

82 lines
1.7 KiB
C++

/* -*- C++ -*- */
/* Copyright (C) 2002 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 _SP_RCONTEXT_H_
#define _SP_RCONTEXT_H_
class sp_rcontext : public Sql_alloc
{
sp_rcontext(const sp_rcontext &); /* Prevent use of these */
void operator=(sp_rcontext &);
public:
sp_rcontext(uint size)
: m_count(0), m_size(size)
{
m_frame = (Item **)sql_alloc(size * sizeof(Item*));
m_outs = (int *)sql_alloc(size * sizeof(int));
}
~sp_rcontext()
{
// Not needed?
//sql_element_free(m_frame);
}
inline void
push_item(Item *i)
{
if (m_count < m_size)
m_frame[m_count++] = i;
}
inline void
set_item(uint idx, Item *i)
{
if (idx < m_count)
m_frame[idx] = i;
}
inline Item *
get_item(uint idx)
{
return m_frame[idx];
}
inline void
set_oindex(uint idx, int oidx)
{
m_outs[idx] = oidx;
}
inline int
get_oindex(uint idx)
{
return m_outs[idx];
}
private:
uint m_count;
uint m_size;
Item **m_frame;
int *m_outs;
}; // class sp_rcontext : public Sql_alloc
#endif /* _SP_RCONTEXT_H_ */