~drizzle-trunk/drizzle/development

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

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

 *

 *  Copyright (C) 2010 Brian Aker

 *

 *  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

 */

#pragma once

#include <drizzled/table/instance.h>

namespace drizzled {

namespace definition {

class Cache

{

public:

  static size_t size()

  {

    // no lock?

    return cache.size();

  }

  static void rehash(size_t arg)

  {

    // no lock?

    cache.rehash(arg);

  }

  static table::instance::Shared::shared_ptr find(const identifier::Table::Key&);

  static void erase(const identifier::Table::Key&);

  static bool insert(const identifier::Table::Key&, table::instance::Shared::shared_ptr);

private:

  static void CopyFrom(table::instance::Shared::vector&);

  typedef boost::unordered_map< identifier::Table::Key, table::instance::Shared::shared_ptr> Map;

  static Map cache;

  static boost::mutex _mutex;

  friend class generator::TableDefinitionCache;

};

} /* namespace definition */

} /* namespace drizzled */