~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_SIZE_H

#define DRIZZLED_FIELD_SIZE_H

#include <drizzled/field/num.h>

namespace drizzled

{

namespace field

{

class Size :public Field_num {

public:

  using Field::val_int;

  using Field::val_str;

  using Field::cmp;

  using Field::store;

  using Field::pack;

  using Field::unpack;

  Size(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);

  Size(uint32_t len_arg,bool maybe_null_arg,

        const char *field_name_arg,

        bool unsigned_arg);

  enum Item_result result_type () const { return INT_RESULT; }

  enum_field_types type() const { return DRIZZLE_TYPE_LONGLONG;}

  enum ha_base_keytype key_type() const

  { return unsigned_flag ? HA_KEYTYPE_ULONGLONG : HA_KEYTYPE_LONGLONG; }

  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)

  {

    ptr[0]=ptr[1]=ptr[2]=ptr[3]=ptr[4]=ptr[5]=ptr[6]=ptr[7]=0;

    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 8; }

  void sql_type(String &str) const;

  bool can_be_compared_as_int64_t() const { return true; }

  uint32_t max_display_length() { return 20; }

  virtual unsigned char *pack(unsigned char* to, const unsigned char *from,

                              uint32_t max_length,

                              bool low_byte_first);

  virtual const unsigned char *unpack(unsigned char* to, const unsigned char *from,

                                      uint32_t param_data,

                                      bool low_byte_first);

};

} /* namespace field */

} /* namespace drizzled */

#endif /* DRIZZLED_FIELD_SIZE_H */