~drizzle-trunk/drizzle/development

/*

  Copyright (C) 2010 Stewart Smith

  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 Street, Fifth Floor, Boston, MA  02110-1301, USA.

*/

#ifndef PLUGIN_EMBEDDED_INNODB_EMBEDDED_INNODB_ENGINE_H

#define PLUGIN_EMBEDDED_INNODB_EMBEDDED_INNODB_ENGINE_H

#include <drizzled/cursor.h>

#include <drizzled/atomics.h>

class EmbeddedInnoDBTableShare

{

public:

  EmbeddedInnoDBTableShare(const char* name, bool hidden_primary_key);

  drizzled::THR_LOCK lock;

  int use_count;

  std::string table_name;

  drizzled::atomic<uint64_t> auto_increment_value;

  drizzled::atomic<uint64_t> hidden_pkey_auto_increment_value;

  bool has_hidden_primary_key;

};

class EmbeddedInnoDBCursor: public drizzled::Cursor

{

public:

  EmbeddedInnoDBCursor(drizzled::plugin::StorageEngine &engine, drizzled::TableShare &table_arg);

  ~EmbeddedInnoDBCursor()

  {}

  /*

    The name of the index type that will be used for display

    don't implement this method unless you really have indexes

  */

  const char *index_type(uint32_t key_number);

  uint32_t index_flags(uint32_t inx) const;

  int open(const char *name, int mode, uint32_t test_if_locked);

  int close(void);

  int doInsertRecord(unsigned char * buf);

  int doStartTableScan(bool scan);

  int rnd_next(unsigned char *buf);

  int doEndTableScan();

  int rnd_pos(unsigned char * buf, unsigned char *pos);

  int doStartIndexScan(uint32_t, bool);

  int index_read(unsigned char *buf, const unsigned char *key_ptr,

                 uint32_t key_len, drizzled::ha_rkey_function find_flag);

  int innodb_index_read(unsigned char *buf,

                        const unsigned char *key_ptr,

                        uint32_t key_len,

                        drizzled::ha_rkey_function find_flag,

                        bool allocate_blobs);

  uint32_t calculate_key_len(uint32_t key_position,

                             drizzled::key_part_map keypart_map_arg);

  int innodb_index_read_map(unsigned char * buf,

                            const unsigned char *key,

                            drizzled::key_part_map keypart_map,

                            drizzled::ha_rkey_function find_flag,

                            bool allocate_blobs);

  int index_read_idx_map(unsigned char * buf,

                         uint32_t index,

                         const unsigned char * key,

                         drizzled::key_part_map keypart_map,

                         drizzled::ha_rkey_function find_flag);

  int index_next(unsigned char * buf);

  int doEndIndexScan();

  int index_prev(unsigned char * buf);

  int index_first(unsigned char * buf);

  int index_last(unsigned char * buf);

  void position(const unsigned char *record);

  int info(uint32_t flag);

  double scan_time();

  int doDeleteRecord(const unsigned char *);

  int delete_all_rows(void);

  int doUpdateRecord(const unsigned char * old_data, unsigned char * new_data);

  int extra(drizzled::ha_extra_function operation);

  EmbeddedInnoDBTableShare *get_share(const char *table_name,

                                      bool has_hidden_primary_key,

                                      int *rc);

  int free_share();

  EmbeddedInnoDBTableShare *share;

  drizzled::THR_LOCK_DATA lock;  /* lock for store_lock. this is ass. */

  drizzled::THR_LOCK_DATA **store_lock(drizzled::Session *,

                                       drizzled::THR_LOCK_DATA **to,

                                       drizzled::thr_lock_type);

  uint64_t getInitialAutoIncrementValue();

  uint64_t getHiddenPrimaryKeyInitialAutoIncrementValue();

  void get_auto_increment(uint64_t ,

                          uint64_t ,

                          uint64_t ,

                          uint64_t *first_value,

                          uint64_t *nb_reserved_values);

  int reset();

private:

  ib_crsr_t cursor;

  ib_tpl_t tuple;

  bool advance_cursor;

  bool write_can_replace;

  uint64_t hidden_autoinc_pkey_position;

  drizzled::memory::Root *blobroot;

  bool in_table_scan;

};

#endif /* PLUGIN_EMBEDDED_INNODB_EMBEDDED_INNODB_ENGINE_H */