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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2008 Sun Microsystems, Inc.
*
* 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; version 2 of the License.
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#pragma once
#include <boost/shared_ptr.hpp>
#include <drizzled/common_fwd.h>
#include <drizzled/enum.h>
#include <drizzled/lex_string.h>
namespace drizzled {
/* Classes to support the SET command */
/****************************************************************************
Variables that are changable runtime are declared using the
following classes
****************************************************************************/
/****************************************************************************
Classes for parsing of the SET command
****************************************************************************/
class set_var_base
{
public:
virtual ~set_var_base() {}
virtual int check(Session*)= 0; /* To check privileges etc. */
virtual int update(Session*)= 0; /* To set the value */
/* light check for PS */
};
/* MySQL internal variables */
class set_var : public set_var_base
{
uint64_t uint64_t_value;
std::string str_value;
public:
sys_var *var;
Item *value;
sql_var_t type;
str_ref base; // for structs
set_var(sql_var_t type_arg, sys_var *var_arg, str_ref base_name_arg, Item *value_arg);
int check(Session *session);
int update(Session *session);
void setValue(const std::string &new_value);
void setValue(uint64_t new_value);
void updateValue();
uint64_t getInteger()
{
return uint64_t_value;
}
};
/* User variables like @my_own_variable */
class set_var_user: public set_var_base
{
Item_func_set_user_var *user_var_item;
public:
explicit set_var_user(Item_func_set_user_var *item) :
user_var_item(item)
{}
int check(Session *session);
int update(Session *session);
};
typedef boost::shared_ptr<set_var_base> SetVarPtr;
typedef std::vector<SetVarPtr> SetVarVector;
int sql_set_variables(Session *session, const SetVarVector &var_list);
} /* namespace drizzled */
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