~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/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/make_shared.hpp>

#include <boost/shared_ptr.hpp>

using namespace drizzled;

optimizer::AccessMethod::ptr optimizer::AccessMethodFactory::create(access_method type)

{

  switch (type)

  {

  case AM_SYSTEM:

    return boost::make_shared<optimizer::System>();

  case AM_CONST:

    return boost::make_shared<optimizer::Const>();

  case AM_EQ_REF:

    return boost::make_shared<optimizer::UniqueIndex>();

  case AM_REF_OR_NULL:

  case AM_REF:

    return boost::make_shared<optimizer::Index>();

  case AM_ALL:

    return boost::make_shared<optimizer::Scan>();

  default:

    assert(false);

  }

  return optimizer::AccessMethod::ptr();

}