~drizzle-trunk/drizzle/development

/* -*- 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

 */

#include <config.h>

#include <drizzled/item/uint.h>

#include <drizzled/item/num.h>

#include <drizzled/item/string.h>

#include <drizzled/item/decimal.h>

namespace drizzled {

/**

  @details

  Created mostly for prepare_table(). Important

  when a string ENUM/SET column is described with a numeric default value:

  CREATE TABLE t1(a SET('a') DEFAULT 1);

  We cannot use generic Item::safe_charset_converter(), because

  the latter returns a non-fixed Item, so val_str() crashes afterwards.

  Override Item_num method, to return a fixed item.

*/

Item *Item_num::safe_charset_converter(const charset_info_st*)

{

  char buf[64];

  String tmp(buf, sizeof(buf), &my_charset_bin);

  String* s= val_str(&tmp);

  Item_string* conv= new Item_string(s->ptr(), s->length(), s->charset());

  conv->str_value.copy();

  conv->str_value.mark_as_const();

  return conv;

}

Item_num *Item_uint::neg()

{

  Item_decimal *item= new Item_decimal(value, 1);

  return item->neg();

}

} /* namespace drizzled */