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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
*/
#pragma once
#include <drizzled/field.h>
#include <drizzled/visibility.h>
namespace drizzled
{
/* base class for all string related classes */
class DRIZZLED_API Field_str :
public Field
{
protected:
const charset_info_st *field_charset;
enum Derivation field_derivation;
int report_if_important_data(const char *ptr, const char *end);
public:
Field_str(unsigned char *ptr_arg,
uint32_t len_arg,
unsigned char *null_ptr_arg,
unsigned char null_bit_arg,
const char *field_name_arg,
const charset_info_st * const charset);
Item_result result_type () const { return STRING_RESULT; }
uint32_t decimals() const { return NOT_FIXED_DEC; }
using Field::store;
int store(double nr);
int store(int64_t nr, bool unsigned_val)=0;
int store_decimal(const type::Decimal *);
int store(const char *to,uint32_t length, const charset_info_st * const cs)=0;
uint32_t size_of() const { return sizeof(*this); }
const charset_info_st *charset(void) const { return field_charset; }
void set_charset(const charset_info_st * const charset_arg)
{ field_charset= charset_arg; }
enum Derivation derivation(void) const { return field_derivation; }
virtual void set_derivation(enum Derivation derivation_arg)
{ field_derivation= derivation_arg; }
bool binary() const { return field_charset == &my_charset_bin; }
uint32_t max_display_length() { return field_length; }
friend class CreateField;
type::Decimal *val_decimal(type::Decimal *) const;
virtual bool str_needs_quotes() { return true; }
uint32_t max_data_length() const;
};
/*
Report "not well formed" or "cannot convert" error
after storing a character string info a field.
SYNOPSIS
check_string_copy_error()
field - Field
well_formed_error_pos - where not well formed data was first met
cannot_convert_error_pos - where a not-convertable character was first met
end - end of the string
cs - character set of the string
NOTES
As of version 5.0 both cases return the same error:
"Invalid string value: 'xxx' for column 't' at row 1"
Future versions will possibly introduce a new error message:
"Cannot convert character string: 'xxx' for column 't' at row 1"
RETURN
false - If errors didn't happen
true - If an error happened
*/
bool check_string_copy_error(Field_str *field,
const char *well_formed_error_pos,
const char *cannot_convert_error_pos,
const char *end,
const charset_info_st * const cs);
} /* namespace drizzled */
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