~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_TIMESTAMP

#define DRIZZLE_SERVER_FIELD_TIMESTAMP

class Field_timestamp :public Field_str {

public:

  Field_timestamp(uchar *ptr_arg, uint32_t len_arg,

                  uchar *null_ptr_arg, uchar null_bit_arg,

		  enum utype unireg_check_arg, const char *field_name_arg,

		  TABLE_SHARE *share, const CHARSET_INFO * const cs);

  Field_timestamp(bool maybe_null_arg, const char *field_name_arg,

		  const CHARSET_INFO * const cs);

  enum_field_types type() const { return DRIZZLE_TYPE_TIMESTAMP;}

  enum ha_base_keytype key_type() const { return HA_KEYTYPE_ULONG_INT; }

  enum Item_result cmp_type () const { return INT_RESULT; }

  int  store(const char *to,uint 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]=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_t pack_length() const { return 4; }

  void sql_type(String &str) const;

  bool can_be_compared_as_int64_t() const { return true; }

  bool zero_pack() const { return 0; }

  void set_time();

  virtual void set_default()

  {

    if (table->timestamp_field == this &&

        unireg_check != TIMESTAMP_UN_FIELD)

      set_time();

    else

      Field::set_default();

  }

  /* Get TIMESTAMP field value as seconds since begging of Unix Epoch */

  inline long get_timestamp(bool *null_value)

  {

    if ((*null_value= is_null()))

      return 0;

#ifdef WORDS_BIGENDIAN

    if (table && table->s->db_low_byte_first)

      return sint4korr(ptr);

#endif

    long tmp;

    longget(tmp,ptr);

    return tmp;

  }

  inline void store_timestamp(my_time_t timestamp)

  {

#ifdef WORDS_BIGENDIAN

    if (table && table->s->db_low_byte_first)

    {

      int4store(ptr,timestamp);

    }

    else

#endif

      longstore(ptr,(uint32_t) timestamp);

  }

  bool get_date(DRIZZLE_TIME *ltime,uint fuzzydate);

  bool get_time(DRIZZLE_TIME *ltime);

  timestamp_auto_set_type get_auto_set_type() const;

};

#endif