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/* Copyright (C) 2000 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 */
class Item_row: public Item
{
bool array_holder;
table_map tables;
uint arg_count;
Item **items;
public:
Item_row(List<Item> &);
Item_row(Item_row *item):
Item(), array_holder(0), tables(item->tables), arg_count(item->arg_count),
items(item->items)
{}
~Item_row()
{
if(array_holder && items)
sql_element_free(items);
}
enum Type type() const { return ROW_ITEM; };
void illegal_method_call(const char *);
bool is_null() { return null_value; }
void make_field(Send_field *)
{
illegal_method_call((const char*)"make_field");
};
double val()
{
illegal_method_call((const char*)"val");
return 0;
};
longlong val_int()
{
illegal_method_call((const char*)"val_int");
return 0;
};
String *val_str(String *)
{
illegal_method_call((const char*)"val_str");
return 0;
};
bool fix_fields(THD *thd, TABLE_LIST *tables, Item **ref);
table_map used_tables() const { return tables; };
enum Item_result result_type() const { return ROW_RESULT; }
virtual uint cols() { return arg_count; }
virtual Item* el(uint i) { return items[i]; }
virtual bool check_cols(uint c);
};
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