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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/str.h>
namespace drizzled
{
class Field_enum :public Field_str
{
public:
using Field::store;
using Field::val_int;
using Field::val_str;
using Field::cmp;
static const int max_supported_elements = 0x10000;
/** Internal storage for the string values of the ENUM */
TYPELIB *typelib;
Field_enum(unsigned char *ptr_arg,
uint32_t len_arg,
unsigned char *null_ptr_arg,
unsigned char null_bit_arg,
const char *field_name_arg,
TYPELIB *typelib_arg,
const charset_info_st * const charset_arg)
:Field_str(ptr_arg,
len_arg,
null_ptr_arg,
null_bit_arg,
field_name_arg,
charset_arg),
typelib(typelib_arg)
{
flags|= ENUM_FLAG;
}
Field *new_field(memory::Root *root, Table *new_table, bool keep_type);
enum ha_base_keytype key_type() const { return HA_KEYTYPE_ULONG_INT; }
int store(const char *to, uint32_t length, const charset_info_st * const);
int store(double nr);
int store(int64_t nr, bool unsigned_val);
double val_real(void) const;
int64_t val_int(void) const;
String *val_str(String*, String *) const;
int cmp(const unsigned char *, const unsigned char *);
void sort_string(unsigned char *buff, uint32_t length);
void store_type(uint64_t value);
void sql_type(String &str) const;
bool eq_def(Field *field);
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;
}
uint32_t pack_length() const { return 4; }
uint32_t size_of() const
{
return sizeof(*this);
}
enum_field_types real_type() const
{
return DRIZZLE_TYPE_ENUM;
}
virtual bool zero_pack() const
{
return false;
}
bool optimize_range(uint32_t, uint32_t)
{
return false;
}
bool has_charset(void) const
{
return true;
}
/* enum and set are sorted as integers */
const charset_info_st *sort_charset(void) const { return &my_charset_bin; }
};
} /* namespace drizzled */
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