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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2008 Sun Microsystems
*
* 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; version 2 of the License.
*
* 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
*/
#ifndef DRIZZLED_VIRTUAL_COLUMN_INFO_H
#define DRIZZLED_VIRTUAL_COLUMN_INFO_H
#include <drizzled/definitions.h>
#include <drizzled/sql_alloc.h>
#include <drizzled/lex_string.h>
class Item;
class virtual_column_info: public Sql_alloc
{
public:
Item *expr_item;
LEX_STRING expr_str;
Item *item_free_list;
virtual_column_info()
: expr_item(0), item_free_list(0),
field_type(DRIZZLE_TYPE_VIRTUAL),
is_stored(false), data_inited(false)
{
expr_str.str= NULL;
expr_str.length= 0;
};
~virtual_column_info() {}
enum_field_types get_real_type();
void set_field_type(enum_field_types fld_type);
bool get_field_stored();
void set_field_stored(bool stored);
private:
/*
The following data is only updated by the parser and read
when a Create_field object is created/initialized.
*/
enum_field_types field_type; /* Real field type*/
bool is_stored; /* Indication that the field is
phisically stored in the database*/
/*
This flag is used to prevent other applications from
reading and using incorrect data.
*/
bool data_inited;
};
#endif /* DRIZZLED_VIRTUAL_COLUMN_INFO_H */
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