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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/num.h>
namespace drizzled
{
/* New decimal/numeric field which use fixed point arithmetic */
class Field_decimal :public Field_num {
public:
using Field::store;
using Field::val_int;
using Field::val_str;
using Field::cmp;
using Field::unpack;
/* The maximum number of decimal digits can be stored */
uint32_t precision;
uint32_t bin_size;
/*
Constructors take max_length of the field as a parameter - not the
precision as the number of decimal digits allowed.
So for example we need to count length from precision handling
CREATE TABLE ( DECIMAL(x,y))
*/
Field_decimal(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,
uint8_t dec_arg);
Field_decimal(uint32_t len_arg,
bool maybe_null_arg,
const char *field_name_arg,
uint8_t dec_arg,
bool unsigned_arg);
enum_field_types type() const { return DRIZZLE_TYPE_DECIMAL;}
enum ha_base_keytype key_type() const { return HA_KEYTYPE_BINARY; }
Item_result result_type () const { return DECIMAL_RESULT; }
int reset(void);
bool store_value(const type::Decimal *decimal_value);
void set_value_on_overflow(type::Decimal *decimal_value, bool sign);
int store(const char *to, uint32_t length, const charset_info_st * const charset);
int store(double nr);
int store(int64_t nr, bool unsigned_val);
int store_time(type::Time <ime, type::timestamp_t t_type);
int store_decimal(const type::Decimal *);
double val_real(void) const;
int64_t val_int(void) const;
type::Decimal *val_decimal(type::Decimal *) const;
String *val_str(String*, String *) const;
int cmp(const unsigned char *, const unsigned char *);
void sort_string(unsigned char *buff, uint32_t length);
bool zero_pack() const { return 0; }
uint32_t max_display_length() { return field_length; }
uint32_t size_of() const { return sizeof(*this); }
uint32_t pack_length() const { return (uint32_t) bin_size; }
uint32_t pack_length_from_metadata(uint32_t field_metadata);
uint32_t is_equal(CreateField *new_field);
virtual const unsigned char *unpack(unsigned char* to, const unsigned char *from,
uint32_t param_data, bool low_byte_first);
};
} /* namespace drizzled */
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