~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

 */

#include <config.h>

#include <algorithm>

#include <drizzled/field/boolean.h>

#include <drizzled/type/boolean.h>

#include <drizzled/error.h>

#include <drizzled/internal/my_sys.h>

#include <drizzled/session.h>

#include <drizzled/table.h>

#include <drizzled/temporal.h>

namespace drizzled {

namespace field {

Boolean::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_arg) :

  Field(ptr_arg, len_arg,

        null_ptr_arg,

        null_bit_arg,

        Field::NONE,

        field_name_arg),

  ansi_display(ansi_display_arg)

  {

    if (ansi_display)

      flags|= UNSIGNED_FLAG;

  }

int Boolean::cmp(const unsigned char *a, const unsigned char *b)

{ 

  return memcmp(a, b, sizeof(unsigned char));

}

int Boolean::store(const char *from, uint32_t length, const charset_info_st * const )

{

  ASSERT_COLUMN_MARKED_FOR_WRITE;

  bool result;

  if (not type::convert(result, from, length))

  {

    my_error(ER_INVALID_BOOLEAN_VALUE, MYF(0), from);

    return 1;

  }

  set(result);

  return 0;

}

int Boolean::store(int64_t nr, bool)

{

  ASSERT_COLUMN_MARKED_FOR_WRITE;

  set(nr != 0);

  return 0;

}

int  Boolean::store(double nr)

{

  ASSERT_COLUMN_MARKED_FOR_WRITE;

  set(nr);

  return 0;

}

int Boolean::store_decimal(const drizzled::type::Decimal *dec)

{

  ASSERT_COLUMN_MARKED_FOR_WRITE;

  set(not dec->isZero());

  return 0;

}

double Boolean::val_real() const

{

  ASSERT_COLUMN_MARKED_FOR_READ;

  return isTrue();

}

int64_t Boolean::val_int() const

{

  ASSERT_COLUMN_MARKED_FOR_READ;

  return isTrue();

}

String *Boolean::val_str(String *val_buffer, String *) const

{

  ASSERT_COLUMN_MARKED_FOR_READ;

  type::convert(*val_buffer, isTrue(), ansi_display);

  return val_buffer;

}

type::Decimal *Boolean::val_decimal(type::Decimal *dec) const

{

  if (isTrue())

  {

    int2_class_decimal(E_DEC_OK, 1, false, dec);

    return dec;

  }

  dec->set_zero();

  return dec;

}

void Boolean::sort_string(unsigned char *to, uint32_t length_arg)

{

  memcpy(to, ptr, length_arg);

}

} /* namespace field */

} /* namespace drizzled */