~drizzle-trunk/drizzle/development

/* Copyright (C) 2003 MySQL AB

   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; version 2 of the License.

  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 "drizzled/field.h"

#include "drizzled/field/blob.h"

#include "plugin/myisam/myisam.h"

#include "drizzled/table.h"

#include "drizzled/session.h"

#include <drizzled/thr_lock.h>

#include <drizzled/my_hash.h>

#include <drizzled/cursor.h>

#include <fcntl.h>

#include <inttypes.h>

#include <string>

#include <sys/stat.h>

#include <unistd.h>

#include <zlib.h>

#include <boost/unordered_map.hpp>

#include "drizzled/util/string.h"

#include "azio.h"

#include "plugin/archive/ha_archive.h"

#include <cstdio>

#include <string>

#include <map>

#ifndef PLUGIN_ARCHIVE_ARCHIVE_ENGINE_H

#define PLUGIN_ARCHIVE_ARCHIVE_ENGINE_H

/* The file extension */

#define ARZ ".arz"               // The data file

#define ARN ".ARN"               // Files used during an optimize call

/*

  We just implement one additional file extension.

*/

static const char *ha_archive_exts[] = {

  ARZ,

  NULL

};

class ArchiveEngine : public drizzled::plugin::StorageEngine

{

  typedef boost::unordered_map<std::string, ArchiveShare *, drizzled::util::insensitive_hash, drizzled::util::insensitive_equal_to> ArchiveMap;

  ArchiveMap archive_open_tables;

  /* Variables for archive share methods */

  pthread_mutex_t _mutex;

public:

  ArchiveEngine() :

    drizzled::plugin::StorageEngine("ARCHIVE",

                                    drizzled::HTON_STATS_RECORDS_IS_EXACT |

                                    drizzled::HTON_HAS_RECORDS),

    archive_open_tables()

  {

    pthread_mutex_init(&_mutex, NULL);

    table_definition_ext= ARZ;

  }

  ~ArchiveEngine()

  {

    pthread_mutex_destroy(&_mutex);

  }

  pthread_mutex_t &mutex()

  {

    return _mutex;

  }

  virtual drizzled::Cursor *create(drizzled::Table &table)

  {

    return new ha_archive(*this, table);

  }

  const char **bas_ext() const {

    return ha_archive_exts;

  }

  int doCreateTable(drizzled::Session &session,

                    drizzled::Table &table_arg,

                    const drizzled::identifier::Table &identifier,

                    drizzled::message::Table& proto);

  int doGetTableDefinition(drizzled::Session& session,

                           const drizzled::identifier::Table &identifier,

                           drizzled::message::Table &table_message);

  int doDropTable(drizzled::Session&, const drizzled::identifier::Table &identifier);

  ArchiveShare *findOpenTable(const std::string table_name);

  void addOpenTable(const std::string &table_name, ArchiveShare *);

  void deleteOpenTable(const std::string &table_name);

  uint32_t max_supported_keys()          const { return 1; }

  uint32_t max_supported_key_length()    const { return sizeof(uint64_t); }

  uint32_t max_supported_key_part_length() const { return sizeof(uint64_t); }

  uint32_t index_flags(enum  drizzled::ha_key_alg) const

  {

    return HA_ONLY_WHOLE_INDEX;

  }

  bool doDoesTableExist(drizzled::Session&, const drizzled::identifier::Table &identifier);

  int doRenameTable(drizzled::Session&, const drizzled::identifier::Table &from, const drizzled::identifier::Table &to);

  void doGetTableIdentifiers(drizzled::CachedDirectory &directory,

                             const drizzled::identifier::Schema &schema_identifier,

                             drizzled::identifier::Table::vector &set_of_identifiers);

};

#endif /* PLUGIN_ARCHIVE_ARCHIVE_ENGINE_H */