~drizzle-trunk/drizzle/development

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

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

 *

 *  Copyright (C) 2008 Sun Microsystems, Inc.

 *

 *  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; version 2 of the License.

 *

 *  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 <drizzled/function/time/now.h>

#include <drizzled/current_session.h>

#include <drizzled/session.h>

#include <drizzled/session/times.h>

#include <drizzled/temporal.h>

#include <drizzled/field.h>

namespace drizzled {

String *Item_func_now::val_str(String *)

{

  assert(fixed == 1);

  str_value.set(buff, buff_length, &my_charset_bin);

  return &str_value;

}

void Item_func_now::fix_length_and_dec()

{

  decimals= DATETIME_DEC;

  collation.set(&my_charset_bin);

  ltime.reset();

  ltime.time_type= type::DRIZZLE_TIMESTAMP_DATETIME;

  store_now_in_TIME(ltime);

  ltime.convert(value);

  size_t length= type::Time::MAX_STRING_LENGTH;

  ltime.convert(buff, length);

  max_length= buff_length= length;

}

/**

    Converts current time in time_t to type::Time represenatation for local

    time zone. Defines time zone (local) used for whole NOW function.

*/

void Item_func_now_local::store_now_in_TIME(type::Time &now_time)

{

  Session *session= current_session;

  uint32_t fractional_seconds= 0;

  time_t tmp= session->times.getCurrentTimestampEpoch(fractional_seconds);

#if 0

  now_time->store(tmp, fractional_seconds, true);

#endif

  now_time.store(tmp, fractional_seconds);

}

/**

    Converts current time in time_t to type::Time represenatation for UTC

    time zone. Defines time zone (UTC) used for whole UTC_TIMESTAMP function.

*/

void Item_func_now_utc::store_now_in_TIME(type::Time &now_time)

{

  uint32_t fractional_seconds= 0;

  time_t tmp= current_session->times.getCurrentTimestampEpoch(fractional_seconds);

  now_time.store(tmp, fractional_seconds);

}

bool Item_func_now::get_temporal(DateTime &to)

{

  to= cached_temporal;

  return true;

}

bool Item_func_now::get_date(type::Time &res, uint32_t )

{

  res= ltime;

  return 0;

}

int Item_func_now::save_in_field(Field *to, bool )

{

  to->set_notnull();

  return to->store_time(ltime, type::DRIZZLE_TIMESTAMP_DATETIME);

}

} /* namespace drizzled */