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/* -*- 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 CSTDINT_H
#include <drizzled/function/time/unix_timestamp.h>
#include <drizzled/field/timestamp.h>
#include <drizzled/session.h>
#include "drizzled/temporal.h"
int64_t Item_func_unix_timestamp::val_int()
{
DRIZZLE_TIME ltime;
assert(fixed == 1);
if (arg_count == 0)
return (int64_t) current_session->query_start();
if (args[0]->type() == FIELD_ITEM)
{ // Optimize timestamp field
Field *field=((Item_field*) args[0])->field;
if (field->type() == DRIZZLE_TYPE_TIMESTAMP)
return ((Field_timestamp*) field)->get_timestamp(&null_value);
}
if (get_arg0_date(<ime, 0))
{
/*
We have to set null_value again because get_arg0_date will also set it
to true if we have wrong datetime parameter (and we should return 0 in
this case).
*/
null_value= args[0]->null_value;
return 0;
}
drizzled::Timestamp temporal;
temporal.set_years(ltime.year);
temporal.set_months(ltime.month);
temporal.set_days(ltime.day);
temporal.set_hours(ltime.hour);
temporal.set_minutes(ltime.minute);
temporal.set_seconds(ltime.second);
temporal.set_epoch_seconds();
if (! temporal.is_valid())
{
null_value= true;
char buff[drizzled::DateTime::MAX_STRING_LENGTH];
int buff_len;
buff_len= temporal.to_string(buff, drizzled::DateTime::MAX_STRING_LENGTH);
assert((buff_len+1) < drizzled::DateTime::MAX_STRING_LENGTH);
my_error(ER_INVALID_UNIX_TIMESTAMP_VALUE, MYF(0), buff);
return 0;
}
time_t tmp;
temporal.to_time_t(&tmp);
return (int64_t) tmp;
}
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