/* Copyright (c) 2023, 2024, Oracle and/or its affiliates.

This program is free software; you can redistribute it and/or modify

it under the terms of the GNU General Public License, version 2.0,

as published by the Free Software Foundation.

This program is designed to work with certain software (including

but not limited to OpenSSL) that is licensed under separate terms,

as designated in a particular file or component or in included license

documentation. The authors of MySQL hereby grant you an additional

permission to link the program and your derivative works with the

separately licensed software that they have either included with

the program or referenced in the documentation.

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, version 2.0, 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 STATEMENT_RUNNABLE_H

#define STATEMENT_RUNNABLE_H

#include "lex_string.h"

class THD;

/*******************************************************************

* Server_runnable

*******************************************************************/

/**

Execute a fragment of server code in an isolated context, so that

it doesn't leave any effect on THD. THD must have no open tables.

The code must not leave any open tables around.

The result of execution (if any) is stored in Ed_result.

*/

class Server_runnable {

public:

virtual bool execute_server_code(THD *thd) = 0;

virtual ~Server_runnable();

};

/**

Execute one SQL statement in an isolated context.

Allows to execute a SQL statement from within another statement.

Supports even executing a SQL statement from within stored program.

*/

class Statement_runnable : public Server_runnable {

public:

Statement_runnable(LEX_STRING sql_text);

bool execute_server_code(THD *thd) override;

private:

LEX_STRING m_sql_text;

};

#endif