~drizzle-trunk/drizzle/development

/* - mode: c++ c-basic-offset: 2; indent-tabs-mode: nil; -*-

 *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:

 *

 *  Copyright (C) 2008 MySQL

 *

 *  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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

 */

#ifndef DRIZZLED_FIELD_DOUBLE_H

#define DRIZZLED_FIELD_DOUBLE_H

#include <drizzled/field/real.h>

class Field_double :public Field_real {

public:

  using Field::store;

  using Field::val_int;

  using Field::val_str;

  using Field::cmp;

  Field_double(unsigned char *ptr_arg, uint32_t len_arg,

               unsigned char *null_ptr_arg,

               unsigned char null_bit_arg,

               enum utype unireg_check_arg, const char *field_name_arg,

               uint8_t dec_arg,bool zero_arg,bool unsigned_arg)

    :Field_real(ptr_arg, len_arg, null_ptr_arg, null_bit_arg,

                unireg_check_arg, field_name_arg,

                dec_arg, zero_arg, unsigned_arg)

    {}

  Field_double(uint32_t len_arg, bool maybe_null_arg, const char *field_name_arg,

	       uint8_t dec_arg)

    :Field_real((unsigned char*) 0, len_arg, maybe_null_arg ? (unsigned char*) "" : 0, (uint32_t) 0,

                NONE, field_name_arg, dec_arg, 0, 0)

    {}

  Field_double(uint32_t len_arg, bool maybe_null_arg, const char *field_name_arg,

	       uint8_t dec_arg, bool not_fixed_arg)

    :Field_real((unsigned char*) 0, len_arg, maybe_null_arg ? (unsigned char*) "" : 0, (uint32_t) 0,

                NONE, field_name_arg, dec_arg, 0, 0)

    {not_fixed= not_fixed_arg; }

  enum_field_types type() const { return DRIZZLE_TYPE_DOUBLE;}

  enum ha_base_keytype key_type() const { return HA_KEYTYPE_DOUBLE; }

  int  store(const char *to,uint32_t length, const CHARSET_INFO * const charset);

  int  store(double nr);

  int  store(int64_t nr, bool unsigned_val);

  int reset(void) { memset(ptr, 0, sizeof(double)); return 0; }

  double val_real(void);

  int64_t val_int(void);

  String *val_str(String*,String *);

  int cmp(const unsigned char *,const unsigned char *);

  void sort_string(unsigned char *buff,uint32_t length);

  uint32_t pack_length() const { return sizeof(double); }

  uint32_t row_pack_length() { return pack_length(); }

  void sql_type(String &str) const;

private:

  int do_save_field_metadata(unsigned char *first_byte);

};

#endif /* DRIZZLED_FIELD_DOUBLE_H */