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/* Copyright (C) 2000 MySQL AB & NuSphere Corporation
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 __GNUC__
#pragma interface /* gcc class implementation */
#endif
#include "gem_global.h"
#include "dstd.h"
#include "dsmpub.h"
/* class for the the gemini handler */
enum enum_key_string_options{KEY_CREATE,KEY_DELETE,KEY_CHECK};
typedef struct st_gemini_share {
ha_rows *rec_per_key;
THR_LOCK lock;
pthread_mutex_t mutex;
char *table_name;
uint table_name_length,use_count;
} GEM_SHARE;
typedef struct gemBlobDesc
{
dsmBlobId_t blobId;
dsmBuffer_t *pBlob;
} gemBlobDesc_t;
class ha_gemini: public handler
{
/* define file as an int for now until we have a real file struct */
int file;
uint int_option_flag;
int tableNumber;
dsmIndex_t *pindexNumbers; // dsm object numbers for the indexes on this table
dsmRecid_t lastRowid;
uint last_dup_key;
bool fixed_length_row, key_read, using_ignore;
byte *rec_buff;
dsmKey_t *pbracketBase;
dsmKey_t *pbracketLimit;
dsmKey_t *pfoundKey;
dsmMask_t tableStatus; // Crashed/repair status
gemBlobDesc_t *pBlobDescs;
int index_open(char *tableName);
int pack_row(byte **prow, int *ppackedLength, const byte *record,
bool update);
int unpack_row(char *record, char *prow);
int findRow(THD *thd, dsmMask_t findMode, byte *buf);
int fetch_row(void *gemini_context, const byte *buf);
int handleIndexEntries(const byte * record, dsmRecid_t recid,
enum_key_string_options option);
int handleIndexEntry(const byte * record, dsmRecid_t recid,
enum_key_string_options option,uint keynr);
int createKeyString(const byte * record, KEY *pkeyinfo,
unsigned char *pkeyBuf, int bufSize,
int *pkeyStringLen, short geminiIndexNumber,
bool *thereIsAnull);
int fullCheck(THD *thd,byte *buf);
int pack_key( uint keynr, dsmKey_t *pkey,
const byte *key_ptr, uint key_length);
void unpack_key(char *record, dsmKey_t *key, uint index);
int key_cmp(uint keynr, const byte * old_row,
const byte * new_row, bool updateStats);
int saveKeyStats(THD *thd);
void get_index_stats(THD *thd);
short cursorId; /* cursorId of active index cursor if any */
dsmMask_t lockMode; /* Shared or exclusive */
/* FIXFIX Don't know why we need this because I don't know what
store_lock method does but we core dump without this */
THR_LOCK_DATA lock;
GEM_SHARE *share;
public:
ha_gemini(TABLE *table): handler(table), file(0),
int_option_flag(HA_READ_NEXT | HA_READ_PREV |
HA_REC_NOT_IN_SEQ |
HA_KEYPOS_TO_RNDPOS | HA_READ_ORDER | HA_LASTKEY_ORDER |
HA_LONGLONG_KEYS | HA_NULL_KEY | HA_HAVE_KEY_READ_ONLY |
HA_BLOB_KEY |
HA_NO_TEMP_TABLES | HA_NO_FULLTEXT_KEY |
/*HA_NOT_EXACT_COUNT | */
/*HA_KEY_READ_WRONG_STR |*/ HA_DROP_BEFORE_CREATE),
pbracketBase(0),pbracketLimit(0),pfoundKey(0),
cursorId(0)
{
}
~ha_gemini() {}
const char *table_type() const { return "Gemini"; }
const char **bas_ext() const;
ulong option_flag() const { return int_option_flag; }
uint max_record_length() const { return MAXRECSZ; }
uint max_keys() const { return MAX_KEY-1; }
uint max_key_parts() const { return MAX_REF_PARTS; }
uint max_key_length() const { return MAXKEYSZ / 2; }
bool fast_key_read() { return 1;}
bool has_transactions() { return 1;}
int open(const char *name, int mode, uint test_if_locked);
int close(void);
double scan_time();
int write_row(byte * buf);
int update_row(const byte * old_data, byte * new_data);
int delete_row(const byte * buf);
int index_init(uint index);
int index_end();
int index_read(byte * buf, const byte * key,
uint key_len, enum ha_rkey_function find_flag);
int index_read_idx(byte * buf, uint index, const byte * key,
uint key_len, enum ha_rkey_function find_flag);
int index_next(byte * buf);
int index_next_same(byte * buf, const byte *key, uint keylen);
int index_prev(byte * buf);
int index_first(byte * buf);
int index_last(byte * buf);
int rnd_init(bool scan=1);
int rnd_end();
int rnd_next(byte *buf);
int rnd_pos(byte * buf, byte *pos);
void position(const byte *record);
void info(uint);
int extra(enum ha_extra_function operation);
int reset(void);
int analyze(THD* thd, HA_CHECK_OPT* check_opt);
int check(THD* thd, HA_CHECK_OPT* check_opt);
int repair(THD* thd, HA_CHECK_OPT* check_opt);
int restore(THD* thd, HA_CHECK_OPT* check_opt);
int backup(THD* thd, HA_CHECK_OPT* check_opt);
int optimize(THD* thd, HA_CHECK_OPT* check_opt);
int external_lock(THD *thd, int lock_type);
virtual longlong get_auto_increment();
void position(byte *record);
ha_rows records_in_range(int inx,
const byte *start_key,uint start_key_len,
enum ha_rkey_function start_search_flag,
const byte *end_key,uint end_key_len,
enum ha_rkey_function end_search_flag);
void update_create_info(HA_CREATE_INFO *create_info);
int create(const char *name, register TABLE *form,
HA_CREATE_INFO *create_info);
int delete_table(const char *name);
int rename_table(const char* from, const char* to);
THR_LOCK_DATA **store_lock(THD *thd, THR_LOCK_DATA **to,
enum thr_lock_type lock_type);
};
#define GEMOPT_FLUSH_LOG 0x00000001
#define GEMOPT_UNBUFFERED_IO 0x00000002
#define GEMINI_RECOVERY_FULL 0x00000001
#define GEMINI_RECOVERY_NONE 0x00000002
#define GEMINI_RECOVERY_FORCE 0x00000004
#define GEM_OPTID_SPIN_RETRIES 1
extern bool gemini_skip;
extern SHOW_COMP_OPTION have_gemini;
extern long gemini_options;
extern long gemini_buffer_cache;
extern long gemini_io_threads;
extern long gemini_log_cluster_size;
extern long gemini_locktablesize;
extern long gemini_lock_wait_timeout;
extern long gemini_spin_retries;
extern long gemini_connection_limit;
extern char *gemini_basedir;
extern TYPELIB gemini_recovery_typelib;
extern ulong gemini_recovery_options;
bool gemini_init(void);
bool gemini_end(void);
bool gemini_flush_logs(void);
int gemini_commit(THD *thd);
int gemini_rollback(THD *thd);
int gemini_recovery_logging(THD *thd, bool on);
void gemini_disconnect(THD *thd);
int gemini_rollback_to_savepoint(THD *thd);
int gemini_parse_table_name(const char *fullname, char *dbname, char *tabname);
int gemini_is_vst(const char *pname);
int gemini_set_option_long(int optid, long optval);
const int gemini_blocksize = BLKSIZE;
const int gemini_recbits = DEFAULT_RECBITS;
extern "C" void uttrace(void);
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