/* -*- 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
 */

#ifndef DRIZZLED_OPTIMIZER_ACCESS_METHOD_H
#define DRIZZLED_OPTIMIZER_ACCESS_METHOD_H

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


namespace drizzled
{

/* Forward declarations */
class Table;
class JoinTable;

namespace optimizer
{

/**
 * @class AccessMethod
 * @brief Represents an access method
 */
class AccessMethod
{
public:

  AccessMethod() {}

  virtual ~AccessMethod() {}

  /**
   * Retrieve statistics relelvant to this access method.
   *
   * @param[in] table
   * @param[in] join_tab
   * @return true on failure; false on success
   */
  virtual bool getStats(Table *table,
                        JoinTable *join_tab)= 0;

};

} /* end namespace optimizer */

} /* end namespace drizzled */

#endif /* DRIZZLED_OPTIMIZER_ACCESS_METHOD_H */