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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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#ifndef DRIZZLE_SERVER_FIELD_NEW_DECIMAL
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#define DRIZZLE_SERVER_FIELD_NEW_DECIMAL
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#include "mysql_priv.h"
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/* New decimal/numeric field which use fixed point arithmetic */
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class Field_new_decimal :public Field_num {
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int do_save_field_metadata(uchar *first_byte);
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/* The maximum number of decimal digits can be stored */
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Constructors take max_length of the field as a parameter - not the
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precision as the number of decimal digits allowed.
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So for example we need to count length from precision handling
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CREATE TABLE ( DECIMAL(x,y))
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Field_new_decimal(uchar *ptr_arg, uint32 len_arg, uchar *null_ptr_arg,
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enum utype unireg_check_arg, const char *field_name_arg,
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uint8 dec_arg, bool zero_arg, bool unsigned_arg);
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Field_new_decimal(uint32 len_arg, bool maybe_null_arg,
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const char *field_name_arg, uint8 dec_arg,
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enum_field_types type() const { return MYSQL_TYPE_NEWDECIMAL;}
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enum ha_base_keytype key_type() const { return HA_KEYTYPE_BINARY; }
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Item_result result_type () const { return DECIMAL_RESULT; }
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bool store_value(const my_decimal *decimal_value);
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void set_value_on_overflow(my_decimal *decimal_value, bool sign);
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int store(const char *to, uint length, CHARSET_INFO *charset);
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int store(int64_t nr, bool unsigned_val);
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int store_time(MYSQL_TIME *ltime, timestamp_type t_type);
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int store_decimal(const my_decimal *);
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double val_real(void);
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int64_t val_int(void);
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my_decimal *val_decimal(my_decimal *);
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String *val_str(String*, String *);
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int cmp(const uchar *, const uchar *);
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void sort_string(uchar *buff, uint length);
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bool zero_pack() const { return 0; }
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void sql_type(String &str) const;
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uint32 max_display_length() { return field_length; }
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uint size_of() const { return sizeof(*this); }
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uint32 pack_length() const { return (uint32) bin_size; }
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uint pack_length_from_metadata(uint field_metadata);
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uint row_pack_length() { return pack_length(); }
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int compatible_field_size(uint field_metadata);
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uint is_equal(Create_field *new_field);
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virtual const uchar *unpack(uchar* to, const uchar *from,
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uint param_data, bool low_byte_first);
added
removed
server/field/decimal.h
