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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/item.h>
namespace drizzled {
class Item_row : public Item
{
Item **items;
table_map used_tables_cache;
uint32_t arg_count;
bool const_item_cache;
bool with_null;
public:
using Item::split_sum_func;
Item_row(List<Item> &);
Item_row(Item_row *item):
Item(),
items(item->items),
used_tables_cache(item->used_tables_cache),
arg_count(item->arg_count),
const_item_cache(item->const_item_cache),
with_null(0)
{}
enum Type type() const { return ROW_ITEM; };
void illegal_method_call(const char*);
bool is_null() { return null_value; }
void make_field(SendField *)
{
illegal_method_call("make_field");
};
double val_real()
{
illegal_method_call("val");
return 0;
};
int64_t val_int()
{
illegal_method_call("val_int");
return 0;
};
String *val_str(String *)
{
illegal_method_call("val_str");
return 0;
};
type::Decimal *val_decimal(type::Decimal *)
{
illegal_method_call("val_decimal");
return 0;
};
bool fix_fields(Session *session, Item **ref);
void fix_after_pullout(Select_Lex *new_parent, Item **ref);
void cleanup();
void split_sum_func(Session *session, Item **ref_pointer_array, List<Item> &fields);
table_map used_tables() const { return used_tables_cache; };
bool const_item() const { return const_item_cache; };
enum Item_result result_type() const { return ROW_RESULT; }
void update_used_tables();
virtual void print(String *str);
bool walk(Item_processor processor, bool walk_subquery, unsigned char *arg);
Item *transform(Item_transformer transformer, unsigned char *arg);
uint32_t cols() { return arg_count; }
Item* element_index(uint32_t i) { return items[i]; }
Item** addr(uint32_t i) { return items + i; }
bool check_cols(uint32_t c);
bool null_inside() { return with_null; };
void bring_value();
};
} /* namespace drizzled */
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