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/* -*- 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 */
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