~drizzle-trunk/drizzle/development : contents of drizzled/statement.h at revision 1119.4.6

~drizzle-trunk/drizzle/development : (revision 1119.4.6)

/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
 *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
 *
 *  Copyright (C) 2009 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; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  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_STATEMENT_H
#define DRIZZLED_STATEMENT_H

#include <drizzled/server_includes.h>
#include <drizzled/definitions.h>
#include <drizzled/error.h>
#include <drizzled/sql_parse.h>
#include <drizzled/sql_base.h>
#include <drizzled/show.h>

class Session;
class TableList;
class Item;

namespace drizzled
{
namespace statement
{

/**
 * @class Statement
 * @brief Represents a statement to be executed
 */
class Statement
{
public:
  Statement(Session *in_session,
            enum enum_sql_command in_type)
    : 
      session(in_session),
      type(in_type)
  {}

  virtual ~Statement() {}

  /**
   * Execute the statement.
   *
   * @return true on failure; false on success
   */
  virtual bool execute()= 0;

protected:

  /**
   * A session handler.
   */
  Session *session;

  enum enum_sql_command type;
};

} /* end namespace statement */

} /* end namespace drizzled */

#endif /* DRIZZLED_STATEMENT_H */

1100.3.1 by Padraig O'Sullivan Beginnings of reworking the mysql_execute_command() method.	1	/* -- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; --
	2	* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
	3	*
	4	* Copyright (C) 2009 Sun Microsystems
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; either version 2 of the License, or
	9	* (at your option) any later version.
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	* GNU General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* along with this program; if not, write to the Free Software
	18	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	19	*/
	20
1100.3.30 by Padraig O'Sullivan Renamed the Command class to be Statement. Renamed the command directory to	21	#ifndef DRIZZLED_STATEMENT_H
	22	#define DRIZZLED_STATEMENT_H
1100.3.1 by Padraig O'Sullivan Beginnings of reworking the mysql_execute_command() method.	23
	24	#include <drizzled/server_includes.h>
	25	#include <drizzled/definitions.h>
	26	#include <drizzled/error.h>
	27	#include <drizzled/sql_parse.h>
	28	#include <drizzled/sql_base.h>
	29	#include <drizzled/show.h>
	30
	31	class Session;
	32	class TableList;
	33	class Item;
	34
	35	namespace drizzled
	36	{
1100.3.28 by Padraig O'Sullivan Renamed the command namespace where I was declaring all of these commands to	37	namespace statement
1100.3.4 by Padraig O'Sullivan Updates based on code review from Jay.	38	{
1100.3.1 by Padraig O'Sullivan Beginnings of reworking the mysql_execute_command() method.	39
	40	/**
1100.3.30 by Padraig O'Sullivan Renamed the Command class to be Statement. Renamed the command directory to	41	* @class Statement
1100.3.28 by Padraig O'Sullivan Renamed the command namespace where I was declaring all of these commands to	42	* @brief Represents a statement to be executed
1100.3.1 by Padraig O'Sullivan Beginnings of reworking the mysql_execute_command() method.	43	*/
1100.3.30 by Padraig O'Sullivan Renamed the Command class to be Statement. Renamed the command directory to	44	class Statement
1100.3.1 by Padraig O'Sullivan Beginnings of reworking the mysql_execute_command() method.	45	{
	46	public:
1100.3.34 by Padraig O'Sullivan Various updates after great code review from Jay. Thanks Jay!	47	Statement(Session *in_session,
	48	enum enum_sql_command in_type)
1100.3.27 by Padraig O'Sullivan Applied Jay's suggestion of not having the type of the statement passed in	49	:
1100.3.34 by Padraig O'Sullivan Various updates after great code review from Jay. Thanks Jay!	50	session(in_session),
	51	type(in_type)
1100.3.1 by Padraig O'Sullivan Beginnings of reworking the mysql_execute_command() method.	52	{}
	53
1100.3.30 by Padraig O'Sullivan Renamed the Command class to be Statement. Renamed the command directory to	54	virtual ~Statement() {}
1100.3.1 by Padraig O'Sullivan Beginnings of reworking the mysql_execute_command() method.	55
	56	/**
1100.3.28 by Padraig O'Sullivan Renamed the command namespace where I was declaring all of these commands to	57	* Execute the statement.
1100.3.1 by Padraig O'Sullivan Beginnings of reworking the mysql_execute_command() method.	58	*
1100.3.25 by Padraig O'Sullivan Changed return type of the execute() function in Command classes to be bool	59	* @return true on failure; false on success
1100.3.1 by Padraig O'Sullivan Beginnings of reworking the mysql_execute_command() method.	60	*/
1100.3.25 by Padraig O'Sullivan Changed return type of the execute() function in Command classes to be bool	61	virtual bool execute()= 0;
1100.3.1 by Padraig O'Sullivan Beginnings of reworking the mysql_execute_command() method.	62
	63	protected:
1100.3.2 by Padraig O'Sullivan Adding doxygen comments to the sql_commands header file.	64
	65	/**
	66	* A session handler.
	67	*/
1100.3.1 by Padraig O'Sullivan Beginnings of reworking the mysql_execute_command() method.	68	Session *session;
1100.3.34 by Padraig O'Sullivan Various updates after great code review from Jay. Thanks Jay!	69
	70	enum enum_sql_command type;
1100.3.4 by Padraig O'Sullivan Updates based on code review from Jay.	71	};
	72
1100.3.28 by Padraig O'Sullivan Renamed the command namespace where I was declaring all of these commands to	73	} /* end namespace statement */
1100.3.1 by Padraig O'Sullivan Beginnings of reworking the mysql_execute_command() method.	74
	75	} /* end namespace drizzled */
	76
1100.3.30 by Padraig O'Sullivan Renamed the Command class to be Statement. Renamed the command directory to	77	#endif /* DRIZZLED_STATEMENT_H */