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Viewing changes to plugin/archive/archive_engine.h

  • Committer: Monty Taylor
  • Date: 2009-04-14 19:16:51 UTC
  • mto: (997.2.5 mordred)
  • mto: This revision was merged to the branch mainline in revision 994.
  • Revision ID: mordred@inaugust.com-20090414191651-ltbww6hpqks8k7qk
Clarified instructions in README.

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plugin/archive/archive_engine.h
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/* Copyright (C) 2003 MySQL AB
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   Copyright (C) 2010 Brian Aker
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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; version 2 of the License.
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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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  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
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#include "drizzled/field.h"
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#include "drizzled/field/blob.h"
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#include "drizzled/field/timestamp.h"
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#include "plugin/myisam/myisam.h"
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#include "drizzled/table.h"
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#include "drizzled/session.h"
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#include <drizzled/thr_lock.h>
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#include <drizzled/my_hash.h>
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#include <drizzled/cursor.h>
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#include <fcntl.h>
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#include <inttypes.h>
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#include <string>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <zlib.h>
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#include "azio.h"
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#include "plugin/archive/ha_archive.h"
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#include <cstdio>
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#include <string>
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#include <map>
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#ifndef PLUGIN_ARCHIVE_ARCHIVE_ENGINE_H
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#define PLUGIN_ARCHIVE_ARCHIVE_ENGINE_H
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/* The file extension */
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#define ARZ ".arz"               // The data file
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#define ARN ".ARN"               // Files used during an optimize call
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/*
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  We just implement one additional file extension.
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*/
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static const char *ha_archive_exts[] = {
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  ARZ,
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  NULL
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};
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class ArchiveEngine : public drizzled::plugin::StorageEngine
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{
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  typedef std::map<std::string, ArchiveShare*> ArchiveMap;
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  ArchiveMap archive_open_tables;
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public:
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  ArchiveEngine() :
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    drizzled::plugin::StorageEngine("ARCHIVE",
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                                    drizzled::HTON_FILE_BASED |
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                                    drizzled::HTON_STATS_RECORDS_IS_EXACT |
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                                    drizzled::HTON_HAS_RECORDS),
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    archive_open_tables()
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  {
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    table_definition_ext= ARZ;
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  }
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  virtual drizzled::Cursor *create(drizzled::TableShare &table,
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                                   drizzled::memory::Root *mem_root)
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  {
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    return new (mem_root) ha_archive(*this, table);
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  }
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  const char **bas_ext() const {
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    return ha_archive_exts;
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  }
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  int doCreateTable(drizzled::Session &session,
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                    drizzled::Table &table_arg,
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                    drizzled::TableIdentifier &identifier,
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                    drizzled::message::Table& proto);
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  int doGetTableDefinition(drizzled::Session& session,
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                           drizzled::TableIdentifier &identifier,
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                           drizzled::message::Table &table_message);
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  void doGetTableNames(drizzled::CachedDirectory &directory, drizzled::SchemaIdentifier&, std::set<std::string>& set_of_names);
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  int doDropTable(drizzled::Session&, drizzled::TableIdentifier &identifier);
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  ArchiveShare *findOpenTable(const std::string table_name);
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  void addOpenTable(const std::string &table_name, ArchiveShare *);
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  void deleteOpenTable(const std::string &table_name);
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  uint32_t max_supported_keys()          const { return 1; }
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  uint32_t max_supported_key_length()    const { return sizeof(uint64_t); }
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  uint32_t max_supported_key_part_length() const { return sizeof(uint64_t); }
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  uint32_t index_flags(enum  drizzled::ha_key_alg) const
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  {
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    return HA_ONLY_WHOLE_INDEX;
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  }
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  bool doDoesTableExist(drizzled::Session&, drizzled::TableIdentifier &identifier);
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  int doRenameTable(drizzled::Session&, drizzled::TableIdentifier &from, drizzled::TableIdentifier &to);
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  void doGetTableIdentifiers(drizzled::CachedDirectory &directory,
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                             drizzled::SchemaIdentifier &schema_identifier,
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                             drizzled::TableIdentifiers &set_of_identifiers);
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};
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#endif /* PLUGIN_ARCHIVE_ARCHIVE_ENGINE_H */