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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 DRIZZLED_FIELD_DECIMAL_H
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#define DRIZZLED_FIELD_DECIMAL_H
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#include <drizzled/field/num.h>
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/* New decimal/numeric field which use fixed point arithmetic */
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class Field_decimal :public Field_num {
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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_decimal(unsigned char *ptr_arg,
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unsigned char *null_ptr_arg,
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unsigned char null_bit_arg,
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enum utype unireg_check_arg,
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const char *field_name_arg,
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Field_decimal(uint32_t len_arg,
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const char *field_name_arg,
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enum_field_types type() const { return DRIZZLE_TYPE_DECIMAL;}
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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, uint32_t length, const CHARSET_INFO * const charset);
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int store(int64_t nr, bool unsigned_val);
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int store_time(DRIZZLE_TIME *ltime, enum enum_drizzle_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 unsigned char *, const unsigned char *);
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void sort_string(unsigned char *buff, uint32_t 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_t max_display_length() { return field_length; }
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uint32_t size_of() const { return sizeof(*this); }
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uint32_t pack_length() const { return (uint32_t) bin_size; }
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uint32_t pack_length_from_metadata(uint32_t field_metadata);
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uint32_t is_equal(CreateField *new_field);
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virtual const unsigned char *unpack(unsigned char* to, const unsigned char *from,
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uint32_t param_data, bool low_byte_first);
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} /* namespace drizzled */
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#endif /* DRIZZLED_FIELD_DECIMAL_H */