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/* - mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
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* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
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* Copyright (C) 2008 MySQL
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#include <drizzled/server_includes.h>
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#include <drizzled/field/num.h>
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#include <drizzled/drizzled_error_messages.h>
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Numeric fields base class constructor.
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Field_num::Field_num(unsigned char *ptr_arg,uint32_t len_arg, unsigned char *null_ptr_arg,
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unsigned char null_bit_arg, utype unireg_check_arg,
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const char *field_name_arg,
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uint8_t dec_arg, bool zero_arg, bool unsigned_arg)
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:Field(ptr_arg, len_arg, null_ptr_arg, null_bit_arg,
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unireg_check_arg, field_name_arg),
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dec(dec_arg),decimal_precision(zero_arg),unsigned_flag(unsigned_arg)
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Test if given number is a int.
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Make this multi-byte-character safe
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@param str String to test
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@param length Length of 'str'
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@param int_end Pointer to char after last used digit
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@param cs Character set
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This is called after one has called strntoull10rnd() function.
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1 error: empty string or wrong integer.
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2 error: garbage at the end of string.
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int Field_num::check_int(const CHARSET_INFO * const cs, const char *str, int length,
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const char *int_end, int error)
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/* Test if we get an empty string or wrong integer */
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if (str == int_end || error == MY_ERRNO_EDOM)
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String tmp(buff, (uint32_t) sizeof(buff), system_charset_info);
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tmp.copy(str, length, system_charset_info);
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push_warning_printf(table->in_use, DRIZZLE_ERROR::WARN_LEVEL_WARN,
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ER_TRUNCATED_WRONG_VALUE_FOR_FIELD,
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ER(ER_TRUNCATED_WRONG_VALUE_FOR_FIELD),
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"integer", tmp.c_ptr(), field_name,
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(uint32_t) table->in_use->row_count);
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/* Test if we have garbage at the end of the given string. */
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if (test_if_important_data(cs, int_end, str + length))
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set_warning(DRIZZLE_ERROR::WARN_LEVEL_WARN, ER_WARN_DATA_TRUNCATED, 1);
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Conver a string to an integer then check bounds.
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from String to convert
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len Length of the string
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unsigned_max max unsigned value
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signed_min min signed value
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signed_max max signed value
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The function calls strntoull10rnd() to get an integer value then
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check bounds and errors returned. In case of any error a warning
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bool Field_num::get_int(const CHARSET_INFO * const cs, const char *from, uint32_t len,
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int64_t *rnd, uint64_t unsigned_max,
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int64_t signed_min, int64_t signed_max)
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*rnd= (int64_t) cs->cset->strntoull10rnd(cs, from, len,
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if ((((uint64_t) *rnd > unsigned_max) && (*rnd= (int64_t) unsigned_max)) ||
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error == MY_ERRNO_ERANGE)
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if (*rnd < signed_min)
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else if (*rnd > signed_max)
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if (table->in_use->count_cuted_fields &&
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check_int(cs, from, len, end, error))
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set_warning(DRIZZLE_ERROR::WARN_LEVEL_WARN, ER_WARN_DATA_OUT_OF_RANGE, 1);
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void Field_num::add_unsigned(String &res) const
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res.append(STRING_WITH_LEN(" unsigned"));
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Storing decimal in integer fields.
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@param val value for storing
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This method is used by all integer fields, real/decimal redefine it
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int Field_num::store_decimal(const my_decimal *val)
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int64_t i= convert_decimal2int64_t(val, unsigned_flag, &err);
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return test(err | store(i, unsigned_flag));
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Return decimal value of integer field.
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@param decimal_value buffer for storing decimal value
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This method is used by all integer fields, real/decimal redefine it.
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All int64_t values fit in our decimal buffer which cal store 8*9=72
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digits of integer number
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pointer to decimal buffer with value of field
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my_decimal* Field_num::val_decimal(my_decimal *decimal_value)
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assert(result_type() == INT_RESULT);
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int64_t nr= val_int();
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int2my_decimal(E_DEC_FATAL_ERROR, nr, unsigned_flag, decimal_value);
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return decimal_value;
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void Field_num::make_field(Send_field *field)
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Field::make_field(field);
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field->decimals= dec;
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returns 1 if the fields are equally defined
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bool Field_num::eq_def(Field *field)
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if (!Field::eq_def(field))
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Field_num *from_num= (Field_num*) field;
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if (unsigned_flag != from_num->unsigned_flag ||
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dec != from_num->dec)
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uint32_t Field_num::is_equal(Create_field *new_field)
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return ((new_field->sql_type == real_type()) &&
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((new_field->flags & UNSIGNED_FLAG) == (uint32_t) (flags &
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((new_field->flags & AUTO_INCREMENT_FLAG) ==
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(uint32_t) (flags & AUTO_INCREMENT_FLAG)) &&
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(new_field->length <= max_display_length()));
added
removed
drizzled/field/num.cc
