~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_FLOAT_H

#define DRIZZLED_ITEM_FLOAT_H

#include <drizzled/item/num.h>

class Item_float :public Item_num

{

  char *presentation;

public:

  double value;

  // Item_real() :value(0) {}

  Item_float(const char *str_arg, uint32_t length);

  Item_float(const char *str,double val_arg,uint32_t decimal_par,uint32_t length)

    :value(val_arg)

  {

    presentation= name=(char*) str;

    decimals=(uint8_t) decimal_par;

    max_length=length;

    fixed= 1;

  }

  Item_float(double value_par, uint32_t decimal_par) :presentation(0), value(value_par)

  {

    decimals= (uint8_t) decimal_par;

    fixed= 1;

  }

  int save_in_field(Field *field, bool no_conversions);

  enum Type type() const { return REAL_ITEM; }

  enum_field_types field_type() const { return DRIZZLE_TYPE_DOUBLE; }

  double val_real() { assert(fixed == 1); return value; }

  int64_t val_int();

  String *val_str(String*);

  my_decimal *val_decimal(my_decimal *);

  bool basic_const_item() const { return 1; }

  Item *clone_item()

  { return new Item_float(name, value, decimals, max_length); }

  Item_num *neg() { value= -value; return this; }

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

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

};

class Item_static_float_func :public Item_float

{

  const char *func_name;

public:

  Item_static_float_func(const char *str, double val_arg, uint32_t decimal_par,

                        uint32_t length)

    :Item_float(NULL, val_arg, decimal_par, length), func_name(str)

  {}

  virtual inline void print(String *str, enum_query_type)

  {

    str->append(func_name);

  }

  Item *safe_charset_converter(const CHARSET_INFO * const tocs);

};

#endif /* DRIZZLED_ITEM_FLOAT_H */