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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, Inc.
*
* 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_TABLE_IDENT_H
#define DRIZZLED_TABLE_IDENT_H
#include <drizzled/lex_string.h>
#include <drizzled/memory/sql_alloc.h>
#include <drizzled/util/test.h>
namespace drizzled
{
extern char empty_c_string[1];
extern char internal_table_name[2];
/* Structure for db & table in sql_yacc */
class Table_ident :public memory::SqlAlloc
{
public:
LEX_STRING db;
LEX_STRING table;
Select_Lex_Unit *sel;
inline Table_ident(LEX_STRING db_arg, LEX_STRING table_arg)
:table(table_arg), sel((Select_Lex_Unit *)0)
{
db= db_arg;
}
explicit Table_ident(LEX_STRING table_arg)
:table(table_arg), sel((Select_Lex_Unit *)0)
{
db.str=0;
}
/*
This constructor is used only for the case when we create a derived
table. A derived table has no name and doesn't belong to any database.
Later, if there was an alias specified for the table, it will be set
by add_table_to_list.
*/
explicit Table_ident(Select_Lex_Unit *s) : sel(s)
{
/* We must have a table name here as this is used with add_table_to_list */
db.str= empty_c_string; /* a subject to casedn_str */
db.length= 0;
table.str= internal_table_name;
table.length=1;
}
bool is_derived_table() const { return test(sel); }
inline void change_db(char *db_name)
{
db.str= db_name; db.length= (uint32_t) strlen(db_name);
}
};
} /* namespace drizzled */
#endif /* DRIZZLED_TABLE_IDENT_H */
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