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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) 2008-2009 Sun Microsystems
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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; version 2 of the License.
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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_CREATE_FIELD_H
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#define DRIZZLED_CREATE_FIELD_H
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* Class representing a field in a CREATE TABLE statement.
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* Basically, all information for a new or altered field
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* definition is contained in the Create_field class.
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class CreateField :public Sql_alloc
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const char *field_name; /**< Name of the field to be created */
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const char *change; /**< If done with alter table */
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const char *after; /**< Put this new Field after this Field */
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LEX_STRING comment; /**< A comment for this field */
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Item *def; /**< Default value for the new field */
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enum enum_field_types sql_type; /**< The data type of the new field */
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* At various stages in execution this can be length of field in bytes or
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* max number of characters.
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* The value of `length' as set by parser: is the number of characters
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* for most of the types, or of bytes for BLOBs or numeric types.
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Field::utype unireg_check; /**< See Field::unireg_check */
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TYPELIB *interval; /**< Which interval to use (ENUM types..) */
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std::vector<String*> interval_list;
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const CHARSET_INFO *charset; /**< Character set for the column -- @TODO should be deleted */
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Field *field; // For alter table
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uint8_t interval_id; // For rea_create_table
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CreateField() :after(0) {}
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CreateField(Field *field, Field *orig_field);
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/* Used to make a clone of this object for ALTER/CREATE TABLE */
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CreateField *clone(MEM_ROOT *mem_root) const
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{ return new (mem_root) CreateField(*this); }
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void create_length_to_internal_length(void);
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inline enum column_format_type column_format() const
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return (enum column_format_type)
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((flags >> COLUMN_FORMAT_FLAGS) & COLUMN_FORMAT_MASK);
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* Init for a tmp table field. To be extended if need be.
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* @note This is currently ONLY used in Item_sum_distinct::setup()
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void init_for_tmp_table(enum_field_types sql_type_arg,
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Initialize field definition for create.
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@param session Thread handle
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@param fld_name Field name
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@param fld_type Field type
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@param fld_length Field length
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@param fld_decimals Decimal (if any)
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@param fld_type_modifier Additional type information
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@param fld_default_value Field default value (if any)
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@param fld_on_update_value The value of ON UPDATE clause
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@param fld_comment Field comment
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@param fld_change Field change
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@param fld_interval_list Interval list (if any)
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@param fld_charset Field charset
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bool init(Session *session,
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enum_field_types type,
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uint32_t type_modifier,
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Item *on_update_value,
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List<String> *interval_list,
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const CHARSET_INFO * const cs,
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uint32_t uint_geom_type,
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enum column_format_type column_format);
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#endif /* DRIZZLED_CREATE_FIELD_H */
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drizzled/create_field.h
