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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
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* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
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* Copyright (C) 2008 Sun Microsystems
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#ifndef DRIZZLED_SET_VAR_H
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#define DRIZZLED_SET_VAR_H
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#include "drizzled/function/func.h"
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#include "drizzled/function/set_user_var.h"
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#include "drizzled/item/string.h"
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#include "drizzled/item/field.h"
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typedef struct my_locale_st MY_LOCALE;
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/* Classes to support the SET command */
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/****************************************************************************
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Variables that are changable runtime are declared using the
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****************************************************************************/
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/****************************************************************************
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Classes for parsing of the SET command
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****************************************************************************/
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class set_var_base :public memory::SqlAlloc
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virtual ~set_var_base() {}
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virtual int check(Session *session)=0; /* To check privileges etc. */
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virtual int update(Session *session)=0; /* To set the value */
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/* light check for PS */
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/* MySQL internal variables */
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class set_var :public set_var_base
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const CHARSET_INFO *charset;
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uint32_t uint32_t_value;
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uint64_t uint64_t_value;
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plugin::StorageEngine *storage_engine;
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MY_LOCALE *locale_value;
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LEX_STRING base; /* for structs */
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set_var(sql_var_t type_arg, sys_var *var_arg,
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const LEX_STRING *base_name_arg, Item *value_arg)
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:var(var_arg), type(type_arg), base(*base_name_arg)
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If the set value is a field, change it to a string to allow things like
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SET table_type=MYISAM;
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if (value_arg && value_arg->type() == Item::FIELD_ITEM)
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Item_field *item= (Item_field*) value_arg;
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if (!(value=new Item_string(item->field_name,
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(uint32_t) strlen(item->field_name),
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item->collation.collation)))
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value=value_arg; /* Give error message later */
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int check(Session *session);
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int update(Session *session);
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/* User variables like @my_own_variable */
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class set_var_user: public set_var_base
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Item_func_set_user_var *user_var_item;
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set_var_user(Item_func_set_user_var *item)
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int check(Session *session);
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int update(Session *session);
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int sql_set_variables(Session *session, List<set_var_base> *var_list);
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} /* namespace drizzled */
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#endif /* DRIZZLED_SET_VAR_H */