~drizzle-trunk/drizzle/development

/* - mode: c; c-basic-offset: 2; indent-tabs-mode: nil; -*-

 *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:

 *

 *  Copyright (C) 2010 Padraig O'Sullivan

 *

 *  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

 */

#include "config.h"

#include "drizzled/sql_select.h"

#include "drizzled/join_table.h"

#include "drizzled/optimizer/access_method.h"

#include "drizzled/optimizer/access_method_factory.h"

#include "drizzled/optimizer/access_method/system.h"

#include "drizzled/optimizer/access_method/const.h"

#include "drizzled/optimizer/access_method/unique_index.h"

#include "drizzled/optimizer/access_method/index.h"

#include "drizzled/optimizer/access_method/scan.h"

#include <boost/shared_ptr.hpp>

using namespace drizzled;

boost::shared_ptr<optimizer::AccessMethod>

optimizer::AccessMethodFactory::createAccessMethod(enum access_method type)

{

  boost::shared_ptr<optimizer::AccessMethod> am_ret;

  switch (type)

  {

  case AM_SYSTEM:

    am_ret.reset(new optimizer::System());

    break;

  case AM_CONST:

    am_ret.reset(new optimizer::Const());

    break;

  case AM_EQ_REF:

    am_ret.reset(new optimizer::UniqueIndex());

    break;

  case AM_REF_OR_NULL:

  case AM_REF:

    am_ret.reset(new optimizer::Index());

    break;

  case AM_ALL:

    am_ret.reset(new optimizer::Scan());

    break;

  default:

    break;

  }

  return am_ret;

}