54
46
bool update_file_opened;
55
47
bool tina_write_opened;
56
int meta_file; /* Meta file we use */
57
int tina_write_filedes; /* File Cursor for readers */
48
File meta_file; /* Meta file we use */
49
File tina_write_filedes; /* File handler for readers */
58
50
bool crashed; /* Meta file is crashed */
59
51
ha_rows rows_recorded; /* Number of rows in tables */
60
uint32_t data_file_version; /* Version of the data file used */
52
uint data_file_version; /* Version of the data file used */
68
class ha_tina: public Cursor
60
class ha_tina: public handler
70
62
THR_LOCK_DATA lock; /* MySQL lock */
71
TinaShare *share; /* Shared lock info */
63
TINA_SHARE *share; /* Shared lock info */
72
64
off_t current_position; /* Current position in the file during a file scan */
73
65
off_t next_position; /* Next position in the file scan */
74
66
off_t local_saved_data_file_length; /* save position for reads */
75
67
off_t temp_file_length;
76
unsigned char byte_buffer[IO_SIZE];
68
uchar byte_buffer[IO_SIZE];
77
69
Transparent_file *file_buff;
78
int data_file; /* File Cursor for readers */
70
File data_file; /* File handler for readers */
71
File update_temp_file;
82
74
The chain contains "holes" in the file, occured because of
86
78
tina_set chain_buffer[DEFAULT_CHAIN_LENGTH];
88
80
tina_set *chain_ptr;
89
unsigned char chain_alloced;
90
82
uint32_t chain_size;
91
uint32_t local_data_file_version; /* Saved version of the data file used */
83
uint local_data_file_version; /* Saved version of the data file used */
92
84
bool records_is_known;
93
drizzled::memory::Root blobroot;
95
88
bool get_write_pos(off_t *end_pos, tina_set *closest_hole);
96
89
int open_update_temp_file_if_needed();
97
90
int init_tina_writer();
98
91
int init_data_file();
101
ha_tina(drizzled::plugin::StorageEngine &engine, TableShare &table_arg);
94
ha_tina(handlerton *hton, TABLE_SHARE *table_arg);
104
97
if (chain_alloced)
107
100
delete file_buff;
109
102
const char *table_type(void) const { return "CSV"; }
110
const char *index_type(uint32_t)
103
const char *index_type(uint inx __attribute__((unused)))
111
104
{ return "NONE"; }
105
const char **bas_ext() const;
106
uint64_t table_flags() const
108
return (HA_NO_TRANSACTIONS | HA_REC_NOT_IN_SEQ | HA_NO_AUTO_INCREMENT |
109
HA_BINLOG_ROW_CAPABLE | HA_BINLOG_STMT_CAPABLE);
111
uint32_t index_flags(uint idx __attribute__((unused)),
112
uint part __attribute__((unused)),
113
bool all_parts __attribute__((unused))) const
116
We will never have indexes so this will never be called(AKA we return
121
uint max_record_length() const { return HA_MAX_REC_LENGTH; }
122
uint max_keys() const { return 0; }
123
uint max_key_parts() const { return 0; }
124
uint max_key_length() const { return 0; }
114
126
Called in test_quick_select to determine if indexes should be used.
116
128
virtual double scan_time() { return (double) (stats.records+stats.deleted) / 20.0+10; }
118
129
/* The next method will never be called */
119
130
virtual bool fast_key_read() { return 1;}
121
132
TODO: return actual upper bound of number of records in the table.
122
133
(e.g. save number of records seen on full table scan and/or use file size
125
136
ha_rows estimate_rows_upper_bound() { return HA_POS_ERROR; }
127
int open(const char *name, int mode, uint32_t open_options);
138
int open(const char *name, int mode, uint open_options);
129
int write_row(unsigned char * buf);
130
int update_row(const unsigned char * old_data, unsigned char * new_data);
131
int delete_row(const unsigned char * buf);
140
int write_row(uchar * buf);
141
int update_row(const uchar * old_data, uchar * new_data);
142
int delete_row(const uchar * buf);
132
143
int rnd_init(bool scan=1);
133
int rnd_next(unsigned char *buf);
134
int rnd_pos(unsigned char * buf, unsigned char *pos);
144
int rnd_next(uchar *buf);
145
int rnd_pos(uchar * buf, uchar *pos);
146
bool check_and_repair(THD *thd);
147
int check(THD* thd, HA_CHECK_OPT* check_opt);
148
bool is_crashed() const;
136
TinaShare *get_share(const char *table_name);
138
int repair(Session* session, HA_CHECK_OPT* check_opt);
150
int repair(THD* thd, HA_CHECK_OPT* check_opt);
139
151
/* This is required for SQL layer to know that we support autorepair */
140
void position(const unsigned char *record);
152
bool auto_repair() const { return 1; }
153
void position(const uchar *record);
142
155
int delete_all_rows(void);
156
int create(const char *name, TABLE *form, HA_CREATE_INFO *create_info);
157
bool check_if_incompatible_data(HA_CREATE_INFO *info,
160
THR_LOCK_DATA **store_lock(THD *thd, THR_LOCK_DATA **to,
161
enum thr_lock_type lock_type);
145
These functions used to get/update status of the Cursor.
164
These functions used to get/update status of the handler.
146
165
Needed to enable concurrent inserts.
148
167
void get_status();
149
168
void update_status();
151
170
/* The following methods were added just for TINA */
152
int encode_quote(unsigned char *buf);
153
int find_current_row(unsigned char *buf);
171
int encode_quote(uchar *buf);
172
int find_current_row(uchar *buf);
154
173
int chain_append();
157
#endif /* PLUGIN_CSV_HA_TINA_H */