~drizzle-trunk/drizzle/development

/* Copyright (C) 2000-2006 MySQL AB

   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 */

#pragma once

#include <drizzled/cursor.h>

#include <drizzled/thr_lock.h>

/* class for the the myisam Cursor */

#include <plugin/myisam/myisam.h>

class ha_myisam: public drizzled::Cursor

{

  MI_INFO *file;

  char    *data_file_name, *index_file_name;

  bool can_enable_indexes;

  bool is_ordered;

  int repair(drizzled::Session *session, MI_CHECK &param, bool optimize);

 public:

  ha_myisam(drizzled::plugin::StorageEngine &engine,

            drizzled::Table &table_arg);

  ~ha_myisam() {}

  Cursor *clone(drizzled::memory::Root *mem_root);

  const char *index_type(uint32_t key_number);

  int doStartIndexScan(uint32_t idx, bool sorted);

  int doEndIndexScan();

  uint32_t checksum() const;

  int doOpen(const drizzled::identifier::Table &identifier, int mode, uint32_t test_if_locked);

  int close(void);

  int doInsertRecord(unsigned char * buf);

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

  int doDeleteRecord(const unsigned char * buf);

  int index_read_map(unsigned char *buf, const unsigned char *key, drizzled::key_part_map keypart_map,

                     enum drizzled::ha_rkey_function find_flag);

  int index_read_idx_map(unsigned char *buf, uint32_t index, const unsigned char *key,

                         drizzled::key_part_map keypart_map,

                         enum drizzled::ha_rkey_function find_flag);

  int index_read_last_map(unsigned char *buf, const unsigned char *key, drizzled::key_part_map keypart_map);

  int index_next(unsigned char * buf);

  int index_prev(unsigned char * buf);

  int index_first(unsigned char * buf);

  int index_last(unsigned char * buf);

  int index_next_same(unsigned char *buf, const unsigned char *key, uint32_t keylen);

  int doStartTableScan(bool scan);

  int rnd_next(unsigned char *buf);

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

  void position(const unsigned char *record);

  int info(uint);

  int extra(enum drizzled::ha_extra_function operation);

  int extra_opt(enum drizzled::ha_extra_function operation, uint32_t cache_size);

  int reset(void);

  int external_lock(drizzled::Session *session, int lock_type);

  int delete_all_rows(void);

  int disable_indexes(uint32_t mode);

  int enable_indexes(uint32_t mode);

  int indexes_are_disabled(void);

  void start_bulk_insert(drizzled::ha_rows rows);

  int end_bulk_insert();

  drizzled::ha_rows records_in_range(uint32_t inx, drizzled::key_range *min_key, drizzled::key_range *max_key);

  virtual void get_auto_increment(uint64_t offset, uint64_t increment,

                                  uint64_t nb_desired_values,

                                  uint64_t *first_value,

                                  uint64_t *nb_reserved_values);

  MI_INFO *file_ptr(void)

  {

    return file;

  }

  int read_range_first(const drizzled::key_range *start_key, const drizzled::key_range *end_key,

                       bool eq_range_arg, bool sorted);

  int read_range_next();

  int reset_auto_increment(uint64_t value);

  virtual bool isOrdered(void)

  {

    return false;

  }

private:

  drizzled::key_map keys_with_parts;

};