~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

 *

 *  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/session.h>

#include "drizzled/temporal.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);

  memset(&ltime, 0, sizeof(DRIZZLE_TIME));

  ltime.time_type= DRIZZLE_TIMESTAMP_DATETIME;

  store_now_in_TIME(&ltime);

  value= (int64_t) TIME_to_uint64_t_datetime(&ltime);

  buff_length= (uint) my_datetime_to_str(&ltime, buff);

  max_length= buff_length;

}

/**

    Converts current time in time_t to DRIZZLE_TIME represenatation for local

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

*/

void Item_func_now_local::store_now_in_TIME(DRIZZLE_TIME *now_time)

{

  Session *session= current_session;

  time_t tmp= session->query_start();

  (void) cached_temporal.from_time_t(tmp);

  now_time->year= cached_temporal.years();

  now_time->month= cached_temporal.months();

  now_time->day= cached_temporal.days();

  now_time->hour= cached_temporal.hours();

  now_time->minute= cached_temporal.minutes();

  now_time->second= cached_temporal.seconds();

}

/**

    Converts current time in time_t to DRIZZLE_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(DRIZZLE_TIME *now_time)

{

  Session *session= current_session;

  time_t tmp= session->query_start();

  (void) cached_temporal.from_time_t(tmp);

  now_time->year= cached_temporal.years();

  now_time->month= cached_temporal.months();

  now_time->day= cached_temporal.days();

  now_time->hour= cached_temporal.hours();

  now_time->minute= cached_temporal.minutes();

  now_time->second= cached_temporal.seconds();

}

bool Item_func_now::get_temporal(DateTime &to)

{

  to= cached_temporal;

  return true;

}

bool Item_func_now::get_date(DRIZZLE_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, DRIZZLE_TIMESTAMP_DATETIME);

}

} /* namespace drizzled */