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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/str.h>
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#include <drizzled/error.h>
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Field_str::Field_str(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, const CHARSET_INFO * const charset_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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field_charset= charset_arg;
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if (charset_arg->state & MY_CS_BINSORT)
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field_derivation= DERIVATION_IMPLICIT;
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Decimal representation of Field_str.
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@param d value for storing
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Field_str is the base class for fields like Field_enum,
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Field_date and some similar. Some dates use fraction and also
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string value should be converted to floating point value according
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our rules, so we use double to store value of decimal in string.
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int Field_str::store_decimal(const my_decimal *d)
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/* TODO: use decimal2string? */
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int err= warn_if_overflow(my_decimal2double(E_DEC_FATAL_ERROR &
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~E_DEC_OVERFLOW, d, &val));
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return err | store(val);
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my_decimal *Field_str::val_decimal(my_decimal *decimal_value)
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int64_t nr= val_int();
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int2my_decimal(E_DEC_FATAL_ERROR, nr, 0, decimal_value);
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Store double value in Field_varstring.
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Pretty prints double number into field_length characters buffer.
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int Field_str::store(double nr)
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char buff[DOUBLE_TO_STRING_CONVERSION_BUFFER_SIZE];
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uint32_t local_char_length= field_length / charset()->mbmaxlen;
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length= my_gcvt(nr, MY_GCVT_ARG_DOUBLE, local_char_length, buff, &error);
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if (table->in_use->abort_on_warning)
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set_warning(DRIZZLE_ERROR::WARN_LEVEL_ERROR, ER_DATA_TOO_LONG, 1);
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set_warning(DRIZZLE_ERROR::WARN_LEVEL_WARN, ER_WARN_DATA_TRUNCATED, 1);
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return store(buff, length, charset());
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/* If one of the fields is binary and the other one isn't return 1 else 0 */
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bool Field_str::compare_str_field_flags(Create_field *new_field, uint32_t flag_arg)
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return (((new_field->flags & (BINCMP_FLAG | BINARY_FLAG)) &&
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!(flag_arg & (BINCMP_FLAG | BINARY_FLAG))) ||
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(!(new_field->flags & (BINCMP_FLAG | BINARY_FLAG)) &&
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(flag_arg & (BINCMP_FLAG | BINARY_FLAG))));
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uint32_t Field_str::is_equal(Create_field *new_field)
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if (compare_str_field_flags(new_field, flags))
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return ((new_field->sql_type == real_type()) &&
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new_field->charset == field_charset &&
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new_field->length == max_display_length());