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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
*/
#ifndef DRIZZLE_SERVER_FIELD_ENUM
#define DRIZZLE_SERVER_FIELD_ENUM
#include <drizzled/field/str.h>
class Field_enum :public Field_str {
protected:
uint32_t packlength;
public:
TYPELIB *typelib;
Field_enum(unsigned char *ptr_arg, uint32_t len_arg, unsigned char *null_ptr_arg,
unsigned char null_bit_arg,
enum utype unireg_check_arg, const char *field_name_arg,
uint32_t packlength_arg,
TYPELIB *typelib_arg,
const CHARSET_INFO * const charset_arg)
:Field_str(ptr_arg, len_arg, null_ptr_arg, null_bit_arg,
unireg_check_arg, field_name_arg, charset_arg),
packlength(packlength_arg),typelib(typelib_arg)
{
flags|=ENUM_FLAG;
}
Field *new_field(MEM_ROOT *root, Table *new_table, bool keep_type);
enum_field_types type() const { return DRIZZLE_TYPE_ENUM; }
enum Item_result cmp_type () const { return INT_RESULT; }
enum Item_result cast_to_int_type () const { return INT_RESULT; }
enum ha_base_keytype key_type() const;
int store(const char *to,uint32_t length, const CHARSET_INFO * const charset);
int store(double nr);
int store(int64_t nr, bool unsigned_val);
double val_real(void);
int64_t val_int(void);
String *val_str(String*,String *);
int cmp(const unsigned char *,const unsigned char *);
void sort_string(unsigned char *buff,uint32_t length);
uint32_t pack_length() const { return (uint32_t) packlength; }
void store_type(uint64_t value);
void sql_type(String &str) const;
uint32_t size_of() const { return sizeof(*this); }
enum_field_types real_type() const { return DRIZZLE_TYPE_ENUM; }
uint32_t pack_length_from_metadata(uint32_t field_metadata)
{ return (field_metadata & 0x00ff); }
uint32_t row_pack_length() { return pack_length(); }
virtual bool zero_pack() const { return 0; }
bool optimize_range(uint32_t, uint32_t)
{ return 0; }
bool eq_def(Field *field);
bool has_charset(void) const { return true; }
/* enum and set are sorted as integers */
const CHARSET_INFO *sort_charset(void) const { return &my_charset_bin; }
private:
int do_save_field_metadata(unsigned char *first_byte);
};
#endif
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