~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 DRIZZLE_SERVER_FIELD_INT_64_T

#define DRIZZLE_SERVER_FIELD_INT_64_T

#include "mysql_priv.h"

class Field_int64_t :public Field_num {

public:

  Field_int64_t(uchar *ptr_arg, uint32 len_arg, uchar *null_ptr_arg,

	      uchar null_bit_arg,

	      enum utype unireg_check_arg, const char *field_name_arg,

	      bool zero_arg, bool unsigned_arg)

    :Field_num(ptr_arg, len_arg, null_ptr_arg, null_bit_arg,

	       unireg_check_arg, field_name_arg,

	       0, zero_arg,unsigned_arg)

    {}

  Field_int64_t(uint32 len_arg,bool maybe_null_arg,

		 const char *field_name_arg,

		  bool unsigned_arg)

    :Field_num((uchar*) 0, len_arg, maybe_null_arg ? (uchar*) "": 0,0,

	       NONE, field_name_arg,0,0,unsigned_arg)

    {}

  enum Item_result result_type () const { return INT_RESULT; }

  enum_field_types type() const { return MYSQL_TYPE_LONGLONG;}

  enum ha_base_keytype key_type() const

    { return unsigned_flag ? HA_KEYTYPE_ULONGLONG : HA_KEYTYPE_LONGLONG; }

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

  bool send_binary(Protocol *protocol);

  int cmp(const uchar *,const uchar *);

  void sort_string(uchar *buff,uint length);

  uint32 pack_length() const { return 8; }

  void sql_type(String &str) const;

  bool can_be_compared_as_int64_t() const { return true; }

  uint32 max_display_length() { return 20; }

  virtual uchar *pack(uchar* to, const uchar *from,

                      uint max_length __attribute__((__unused__)),

                      bool low_byte_first __attribute__((__unused__)))

  {

    int64_t val;

#ifdef WORDS_BIGENDIAN

    if (table->s->db_low_byte_first)

      val = sint8korr(from);

    else

#endif

      int64_tget(val, from);

#ifdef WORDS_BIGENDIAN

    if (low_byte_first)

      int8store(to, val);

    else

#endif

      int64_tstore(to, val);

    return to + sizeof(val);

  }

  virtual const uchar *unpack(uchar* to, const uchar *from,

                              uint param_data __attribute__((__unused__)),

                              bool low_byte_first __attribute__((__unused__)))

  {

    int64_t val;

#ifdef WORDS_BIGENDIAN

    if (low_byte_first)

      val = sint8korr(from);

    else

#endif

      int64_tget(val, from);

#ifdef WORDS_BIGENDIAN

    if (table->s->db_low_byte_first)

      int8store(to, val);

    else

#endif

      int64_tstore(to, val);

    return from + sizeof(val);

  }

};

#endif