mysql5/mysql-5.7.27/sql/ndb_local_schema.h

82 lines
2.2 KiB
C++

/*
Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
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 NDB_LOCAL_SCHEMA_H
#define NDB_LOCAL_SCHEMA_H
class Ndb_local_schema
{
/*
Base functionality for working with local schema
objects like tables, triggers and databases
*/
class Base {
bool m_have_mdl_lock;
bool m_push_warnings;
bool mdl_try_lock(void) const;
void mdl_unlock(void);
protected:
class THD* m_thd;
const char* m_db;
const char* m_name;
void log_warning(const char* fmt, ...) const;
Base(); // Not implemented
Base(const Base&); // Not implemented
Base(class THD* thd, const char* db, const char* name);
~Base();
bool have_mdl_lock(void) const { return m_have_mdl_lock; }
};
public:
/*
Class used for working with a table in the
local MySQL Servers "dictionary"
*/
class Table : protected Base
{
bool m_frm_file_exist;
bool m_ndb_file_exist;
bool m_has_triggers;
bool file_exists(const char* ext) const;
bool remove_file(const char* ext) const;
bool rename_file(const char* new_db, const char* new_name,
const char* ext) const;
// Read the engine type from .frm and return true if it says NDB
bool frm_engine_is_ndb(void) const;
public:
Table(); // Not implemented
Table(const Table&); // Not implemented
Table(class THD* thd, const char* db, const char* name);
bool is_local_table(void) const;
void remove_table(void) const;
void rename_table(const char* new_db, const char* new_name) const;
};
};
#endif