~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_EPOCH_H

#define DRIZZLED_FIELD_EPOCH_H

#include <drizzled/field/str.h>

namespace drizzled

{

namespace field

{

class TableShare;

typedef struct charset_info_st CHARSET_INFO;

class Epoch :public Field_str {

public:

  typedef Epoch* pointer;

  Epoch(unsigned char *ptr_arg,

        unsigned char *null_ptr_arg,

        unsigned char null_bit_arg,

        enum utype unireg_check_arg,

        const char *field_name_arg,

        drizzled::TableShare *share);

  Epoch(bool maybe_null_arg,

        const char *field_name_arg);

  enum_field_types type() const { return DRIZZLE_TYPE_TIMESTAMP;}

  enum ha_base_keytype key_type() const { return HA_KEYTYPE_ULONGLONG; }

  enum Item_result cmp_type () const { return INT_RESULT; }

  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 store_decimal(const type::Decimal *value);

  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; }

  virtual void sql_type(String &str) const;

  virtual bool can_be_compared_as_int64_t() const { return true; }

  bool zero_pack() const { return 0; }

  virtual void set_time();

  virtual void set_default();

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

  virtual long get_timestamp(bool *null_value);

  virtual bool is_timestamp() const

  {

    return true;

  }

private:

  bool get_date(type::Time &ltime,uint32_t fuzzydate);

  bool get_time(type::Time &ltime);

public:

  virtual timestamp_auto_set_type get_auto_set_type() const;

  static size_t max_string_length();

};

} /* namespace field */

} /* namespace drizzled */

#endif /* DRIZZLED_FIELD_EPOCH_H */