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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 <drizzled/server_includes.h>
#include CSTDINT_H
#include <drizzled/function/time/from_unixtime.h>
#include <drizzled/function/time/make_datetime.h>
#include <drizzled/tztime.h>
#include <drizzled/session.h>
void Item_func_from_unixtime::fix_length_and_dec()
{
session= current_session;
collation.set(&my_charset_bin);
decimals= DATETIME_DEC;
max_length=MAX_DATETIME_WIDTH*MY_CHARSET_BIN_MB_MAXLEN;
maybe_null= 1;
}
String *Item_func_from_unixtime::val_str(String *str)
{
DRIZZLE_TIME time_tmp;
assert(fixed == 1);
if (get_date(&time_tmp, 0))
return 0;
if (str->alloc(MAX_DATE_STRING_REP_LENGTH))
{
null_value= 1;
return 0;
}
make_datetime((DATE_TIME_FORMAT *) 0, &time_tmp, str);
return str;
}
int64_t Item_func_from_unixtime::val_int()
{
DRIZZLE_TIME time_tmp;
assert(fixed == 1);
if (get_date(&time_tmp, 0))
return 0;
return (int64_t) TIME_to_uint64_t_datetime(&time_tmp);
}
bool Item_func_from_unixtime::get_date(DRIZZLE_TIME *ltime,
uint32_t fuzzy_date __attribute__((unused)))
{
uint64_t tmp= (uint64_t)(args[0]->val_int());
/*
"tmp > TIMESTAMP_MAX_VALUE" check also covers case of negative
from_unixtime() argument since tmp is unsigned.
*/
if ((null_value= (args[0]->null_value || tmp > TIMESTAMP_MAX_VALUE)))
return 1;
session->variables.time_zone->gmt_sec_to_TIME(ltime, (time_t)tmp);
return 0;
}
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