~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

 *

 *  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

 */

#ifndef DRIZZLED_ITEM_DECIMAL_H

#define DRIZZLED_ITEM_DECIMAL_H

#include <drizzled/item/num.h>

namespace drizzled

{

/* decimal (fixed point) constant */

class Item_decimal :public Item_num

{

protected:

  my_decimal decimal_value;

public:

  Item_decimal(const char *str_arg, uint32_t length, const CHARSET_INFO * const charset);

  Item_decimal(const char *str, const my_decimal *val_arg,

               uint32_t decimal_par, uint32_t length);

  Item_decimal(my_decimal *value_par);

  Item_decimal(int64_t val, bool unsig);

  Item_decimal(double val, int precision, int scale);

  Item_decimal(const unsigned char *bin, int precision, int scale);

  enum Type type() const { return DECIMAL_ITEM; }

  enum Item_result result_type () const { return DECIMAL_RESULT; }

  enum_field_types field_type() const { return DRIZZLE_TYPE_DECIMAL; }

  int64_t val_int();

  double val_real();

  String *val_str(String*);

  my_decimal *val_decimal(my_decimal *)

  { return &decimal_value; }

  int save_in_field(Field *field, bool no_conversions);

  bool basic_const_item() const { return 1; }

  Item *clone_item()

  {

    return new Item_decimal(name, &decimal_value, decimals, max_length);

  }

  virtual void print(String *str, enum_query_type query_type);

  Item_num *neg()

  {

    my_decimal_neg(&decimal_value);

    unsigned_flag= !decimal_value.sign();

    return this;

  }

  uint32_t decimal_precision() const { return decimal_value.precision(); }

  bool eq(const Item *, bool binary_cmp) const;

  void set_decimal_value(my_decimal *value_par);

};

} /* namespace drizzled */

#endif /* DRIZZLED_ITEM_DECIMAL_H */