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-rw-r--r--sql/ha_blackhole.h88
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diff --git a/sql/ha_blackhole.h b/sql/ha_blackhole.h
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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; 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
-
-#ifdef USE_PRAGMA_INTERFACE
-#pragma interface /* gcc class implementation */
-#endif
-
-/*
- Class definition for the blackhole storage engine
- "Dumbest named feature ever"
-*/
-class ha_blackhole: public handler
-{
- THR_LOCK_DATA lock; /* MySQL lock */
- THR_LOCK thr_lock;
-
-public:
- ha_blackhole(TABLE_SHARE *table_arg);
- ~ha_blackhole()
- {
- }
- /* The name that will be used for display purposes */
- const char *table_type() const { return "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(uint key_number);
- const char **bas_ext() const;
- ulong table_flags() const
- {
- return(HA_NULL_IN_KEY | HA_CAN_FULLTEXT | HA_CAN_SQL_HANDLER |
- HA_DUPP_POS | HA_CAN_INDEX_BLOBS | HA_AUTO_PART_KEY |
- HA_FILE_BASED | HA_CAN_GEOMETRY | HA_READ_RND_SAME |
- HA_CAN_INSERT_DELAYED);
- }
- ulong index_flags(uint inx, uint part, bool all_parts) const
- {
- return ((table_share->key_info[inx].algorithm == HA_KEY_ALG_FULLTEXT) ?
- 0 : HA_READ_NEXT | HA_READ_PREV | HA_READ_RANGE |
- HA_READ_ORDER | HA_KEYREAD_ONLY);
- }
- /* The following defines can be increased if necessary */
-#define BLACKHOLE_MAX_KEY 64 /* Max allowed keys */
-#define BLACKHOLE_MAX_KEY_SEG 16 /* Max segments for key */
-#define BLACKHOLE_MAX_KEY_LENGTH 1000
- uint max_supported_keys() const { return BLACKHOLE_MAX_KEY; }
- uint max_supported_key_length() const { return BLACKHOLE_MAX_KEY_LENGTH; }
- uint max_supported_key_part_length() const { return BLACKHOLE_MAX_KEY_LENGTH; }
- int open(const char *name, int mode, uint test_if_locked);
- int close(void);
- int write_row(byte * buf);
- int rnd_init(bool scan);
- int rnd_next(byte *buf);
- int rnd_pos(byte * buf, byte *pos);
- int index_read(byte * buf, const byte * key,
- uint key_len, enum ha_rkey_function find_flag);
- int index_read_idx(byte * buf, uint idx, const byte * key,
- uint key_len, enum ha_rkey_function find_flag);
- int index_read_last(byte * buf, const byte * key, uint key_len);
- int index_next(byte * buf);
- int index_prev(byte * buf);
- int index_first(byte * buf);
- int index_last(byte * buf);
- void position(const byte *record);
- void info(uint flag);
- int external_lock(THD *thd, int lock_type);
- uint lock_count(void) const;
- int create(const char *name, TABLE *table_arg,
- HA_CREATE_INFO *create_info);
- THR_LOCK_DATA **store_lock(THD *thd,
- THR_LOCK_DATA **to,
- enum thr_lock_type lock_type);
- bool has_transactions() { return 1; }
-};