~drizzle-trunk/drizzle/development

1877.2.9 by Brian Aker
Adding cache.h for definition.
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/* - mode: c; c-basic-offset: 2; indent-tabs-mode: nil; -*-
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 *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
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 *
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 *  Copyright (C) 2010 Brian Aker
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 *
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 *  This program is free software; you can redistribute it and/or modify
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 *  it under the terms of the GNU General Public License as published by
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 *  the Free Software Foundation; either version 2 of the License, or
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 *  (at your option) any later version.
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 *
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 *  This program is distributed in the hope that it will be useful,
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 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
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 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 *  GNU General Public License for more details.
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 *
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 *  You should have received a copy of the GNU General Public License
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 *  along with this program; if not, write to the Free Software
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 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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 */
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#ifndef DRIZZLED_DEFINITION_CACHE_H
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#define DRIZZLED_DEFINITION_CACHE_H
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2173.2.1 by Monty Taylor
Fixes incorrect usage of include
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#include <drizzled/table/instance.h>
1938.4.1 by Brian Aker
Fix style on naming of shared_ptr for tableshare.
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1877.2.9 by Brian Aker
Adding cache.h for definition.
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namespace drizzled {
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1938.4.3 by Brian Aker
Added generator for table_definition cache. Now no one can touch the guts :)
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namespace generator {
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class TableDefinitionCache;
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}
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1877.2.9 by Brian Aker
Adding cache.h for definition.
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namespace definition {
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class Cache
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{
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public:
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  static inline Cache &singleton()
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  {
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    static Cache open_cache;
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    return open_cache;
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  }
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  size_t size() const
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  {
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    return cache.size();
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  }
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  void rehash(size_t arg)
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  {
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    cache.rehash(arg);
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  }
1877.2.10 by Brian Aker
Merge in work for cache (fetch directly from).
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2087.4.2 by Brian Aker
Modify TableIdentifier to fit with the rest of the identifiers.
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  table::instance::Shared::shared_ptr find(const identifier::Table::Key &identifier);
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  void erase(const identifier::Table::Key &identifier);
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  bool insert(const identifier::Table::Key &identifier, table::instance::Shared::shared_ptr share);
1938.4.3 by Brian Aker
Added generator for table_definition cache. Now no one can touch the guts :)
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protected:
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  friend class drizzled::generator::TableDefinitionCache;
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2069.4.4 by Brian Aker
Create a shared form of the instance which is a bit more heavier weight then
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  void CopyFrom(table::instance::Shared::vector &vector);
1938.4.3 by Brian Aker
Added generator for table_definition cache. Now no one can touch the guts :)
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private:
2087.4.2 by Brian Aker
Modify TableIdentifier to fit with the rest of the identifiers.
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  typedef boost::unordered_map< identifier::Table::Key, table::instance::Shared::shared_ptr> Map;
1938.4.5 by Brian Aker
REmove the allowance for seeing the raw cache, and remove the ability for an
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1938.4.3 by Brian Aker
Added generator for table_definition cache. Now no one can touch the guts :)
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  Map cache;
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  boost::mutex _mutex;
1877.2.9 by Brian Aker
Adding cache.h for definition.
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};
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} /* namespace definition */
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} /* namespace drizzled */
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#endif /* DRIZZLED_DEFINITION_CACHE_H */