~drizzle-trunk/drizzle/development

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

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

 *

 *  Copyright (C) 2010 Brian Aker

 *

 *  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_BOOLEAN_H

#define DRIZZLED_FIELD_BOOLEAN_H

#include <drizzled/field.h>

#include <string>

namespace drizzled

{

namespace field

{

class Boolean :public Field {

  bool ansi_display;

public:

  Boolean(unsigned char *ptr_arg,

          uint32_t len_arg,

          unsigned char *null_ptr_arg,

          unsigned char null_bit_arg,

          const char *field_name_arg,

          bool ansi_display= false);

  enum_field_types type() const { return DRIZZLE_TYPE_BOOLEAN; }

  enum ha_base_keytype key_type() const { return HA_KEYTYPE_BINARY; }

  bool zero_pack() const { return 0; }

  int  reset(void) { ptr[0]= 0; return 0; }

  uint32_t pack_length() const { return sizeof(unsigned char); }

  uint32_t key_length() const { return sizeof(unsigned char); }

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

  int store(double );

  int store(int64_t nr, bool unsigned_val);

  int store_decimal(const drizzled::type::Decimal*);

  String *val_str(String*,String *) const;

  double val_real() const;

  int64_t val_int() const;

  type::Decimal *val_decimal(type::Decimal *) const;

  void sql_type(drizzled::String&) const;

  Item_result result_type () const { return STRING_RESULT; }

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

  void sort_string(unsigned char*, uint32_t);

  uint32_t max_display_length() { return 5; } // longest string is "false"

  bool can_be_compared_as_int64_t() const

  {

    return true;

  }

  inline String *val_str(String *str) { return val_str(str, str); }

  uint32_t size_of() const { return sizeof(*this); }

  static size_t max_string_length()

  {

    return sizeof(unsigned char);

  }

private:

  void setTrue();

  void setFalse()

  {

    ptr[0]= 0;

  }

  bool isTrue() const

  {

    return ptr[0] ? true : false;

  }

};

} /* namespace field */

} /* namespace drizzled */

#endif /* DRIZZLED_FIELD_BOOLEAN_H */