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/* Copyright (C) 2005 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 */
#ifndef PLUGIN_BLACKHOLE_HA_BLACKHOLE_H
#define PLUGIN_BLACKHOLE_HA_BLACKHOLE_H
#include <drizzled/cursor.h>
#include <drizzled/thr_lock.h>
#define BLACKHOLE_MAX_KEY 64 /* Max allowed keys */
#define BLACKHOLE_MAX_KEY_LENGTH 1000
/*
Shared structure for correct LOCK operation
*/
class BlackholeShare
{
BlackholeShare();
BlackholeShare(const BlackholeShare &);
BlackholeShare& operator=(const BlackholeShare &);
public:
explicit BlackholeShare(const std::string table_name_arg);
~BlackholeShare();
drizzled::THR_LOCK lock;
uint32_t use_count;
const std::string table_name;
};
/*
Class definition for the blackhole storage engine
"Dumbest named feature ever"
*/
class ha_blackhole: public drizzled::Cursor
{
drizzled::THR_LOCK_DATA lock; /* MySQL lock */
BlackholeShare *share;
public:
ha_blackhole(drizzled::plugin::StorageEngine &engine,
drizzled::TableShare &table_arg);
~ha_blackhole()
{}
/*
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 rnd_pos(unsigned char * buf, unsigned char *pos);
BlackholeShare *get_share(const char *table_name);
void free_share();
int index_read_map(unsigned char * buf, const unsigned char * key,
drizzled::key_part_map keypart_map,
drizzled::ha_rkey_function find_flag);
int index_read_idx_map(unsigned char * buf, uint32_t idx, const unsigned char * key,
drizzled::key_part_map keypart_map,
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);
void position(const unsigned char *record);
int info(uint32_t flag);
void get_auto_increment(uint64_t, uint64_t,
uint64_t,
uint64_t *,
uint64_t *)
{}
};
#endif /* PLUGIN_BLACKHOLE_HA_BLACKHOLE_H */
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