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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 <drizzled/function/func.h>
#include <drizzled/lex_string.h>
namespace drizzled {
Item* get_system_var(Session*, sql_var_t, str_ref name, str_ref component);
/* A system variable */
class Item_func_get_system_var : public Item_func
{
sys_var *var;
sql_var_t var_type;
str_ref component;
public:
Item_func_get_system_var(sys_var *var_arg, sql_var_t var_type_arg, str_ref component_arg, const char *name_arg, size_t name_len_arg);
bool fix_fields(Session *session, Item **ref);
/*
Stubs for pure virtual methods. Should never be called: this
item is always substituted with a constant in fix_fields().
*/
double val_real() { assert(0); return 0.0; }
int64_t val_int() { assert(0); return 0; }
String* val_str(String*) { assert(0); return 0; }
void fix_length_and_dec() { assert(0); }
/* TODO: fix to support views */
const char *func_name() const { return "get_system_var"; }
};
} /* namespace drizzled */
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