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/* - mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2008 MySQL
*
* 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 <drizzled/field/num.h>
#include <drizzled/error.h>
#include <drizzled/table.h>
#include <drizzled/session.h>
#include "drizzled/internal/my_sys.h"
namespace drizzled
{
/**
Numeric fields base class constructor.
*/
Field_num::Field_num(unsigned char *ptr_arg,uint32_t len_arg, unsigned char *null_ptr_arg,
unsigned char null_bit_arg, utype unireg_check_arg,
const char *field_name_arg,
uint8_t dec_arg, bool zero_arg, bool unsigned_arg)
:Field(ptr_arg, len_arg, null_ptr_arg, null_bit_arg,
unireg_check_arg, field_name_arg),
dec(dec_arg),decimal_precision(zero_arg), unsigned_flag(unsigned_arg)
{
}
/**
Test if given number is a int.
@todo
Make this multi-byte-character safe
@param str String to test
@param length Length of 'str'
@param int_end Pointer to char after last used digit
@param cs Character set
@note
This is called after one has called strntoull10rnd() function.
@retval
0 OK
@retval
1 error: empty string or wrong integer.
@retval
2 error: garbage at the end of string.
*/
int Field_num::check_int(const CHARSET_INFO * const cs, const char *str, int length,
const char *int_end, int error)
{
/* Test if we get an empty string or wrong integer */
if (str == int_end || error == MY_ERRNO_EDOM)
{
char buff[128];
String tmp(buff, (uint32_t) sizeof(buff), system_charset_info);
tmp.copy(str, length, system_charset_info);
push_warning_printf(getTable()->in_use, DRIZZLE_ERROR::WARN_LEVEL_WARN,
ER_TRUNCATED_WRONG_VALUE_FOR_FIELD,
ER(ER_TRUNCATED_WRONG_VALUE_FOR_FIELD),
"integer", tmp.c_ptr(), field_name,
(uint32_t) getTable()->in_use->row_count);
return 1;
}
/* Test if we have garbage at the end of the given string. */
if (test_if_important_data(cs, int_end, str + length))
{
set_warning(DRIZZLE_ERROR::WARN_LEVEL_WARN, ER_WARN_DATA_TRUNCATED, 1);
return 2;
}
return 0;
}
/*
Conver a string to an integer then check bounds.
SYNOPSIS
Field_num::get_int
cs Character set
from String to convert
len Length of the string
rnd OUT int64_t value
unsigned_max max unsigned value
signed_min min signed value
signed_max max signed value
DESCRIPTION
The function calls strntoull10rnd() to get an integer value then
check bounds and errors returned. In case of any error a warning
is raised.
RETURN
0 ok
1 error
*/
bool Field_num::get_int(const CHARSET_INFO * const cs, const char *from, uint32_t len,
int64_t *rnd, uint64_t ,
int64_t signed_min, int64_t signed_max)
{
char *end;
int error;
*rnd= (int64_t) cs->cset->strntoull10rnd(cs, from, len, false, &end, &error);
if (*rnd < signed_min)
{
*rnd= signed_min;
goto out_of_range;
}
else if (*rnd > signed_max)
{
*rnd= signed_max;
goto out_of_range;
}
if (getTable()->in_use->count_cuted_fields &&
check_int(cs, from, len, end, error))
return 1;
return 0;
out_of_range:
set_warning(DRIZZLE_ERROR::WARN_LEVEL_WARN, ER_WARN_DATA_OUT_OF_RANGE, 1);
return 1;
}
/**
Storing decimal in integer fields.
@param val value for storing
@note
This method is used by all integer fields, real/decimal redefine it
@retval
0 OK
@retval
!=0 error
*/
int Field_num::store_decimal(const my_decimal *val)
{
int err= 0;
int64_t i= convert_decimal2int64_t(val, false, &err);
return test(err | store(i, false));
}
/**
Return decimal value of integer field.
@param decimal_value buffer for storing decimal value
@note
This method is used by all integer fields, real/decimal redefine it.
All int64_t values fit in our decimal buffer which cal store 8*9=72
digits of integer number
@return
pointer to decimal buffer with value of field
*/
my_decimal* Field_num::val_decimal(my_decimal *decimal_value)
{
assert(result_type() == INT_RESULT);
int64_t nr= val_int();
int2my_decimal(E_DEC_FATAL_ERROR, nr, false, decimal_value);
return decimal_value;
}
void Field_num::make_field(SendField *field)
{
Field::make_field(field);
field->decimals= dec;
}
/**
@return
returns 1 if the fields are equally defined
*/
bool Field_num::eq_def(Field *field)
{
if (!Field::eq_def(field))
return 0;
Field_num *from_num= (Field_num*) field;
if (dec != from_num->dec)
return 0;
return 1;
}
uint32_t Field_num::is_equal(CreateField *new_field_ptr)
{
return ((new_field_ptr->sql_type == real_type()) &&
((new_field_ptr->flags & UNSIGNED_FLAG) ==
(uint32_t) (flags & UNSIGNED_FLAG)) &&
((new_field_ptr->flags & AUTO_INCREMENT_FLAG) ==
(uint32_t) (flags & AUTO_INCREMENT_FLAG)) &&
(new_field_ptr->length <= max_display_length()));
}
} /* namespace drizzled */
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