40
54
bool update_file_opened;
41
55
bool tina_write_opened;
42
File meta_file; /* Meta file we use */
43
File tina_write_filedes; /* File handler for readers */
56
int meta_file; /* Meta file we use */
57
int tina_write_filedes; /* File Cursor for readers */
44
58
bool crashed; /* Meta file is crashed */
45
59
ha_rows rows_recorded; /* Number of rows in tables */
46
uint data_file_version; /* Version of the data file used */
60
uint32_t data_file_version; /* Version of the data file used */
54
class ha_tina: public handler
68
class ha_tina: public Cursor
56
70
THR_LOCK_DATA lock; /* MySQL lock */
57
TINA_SHARE *share; /* Shared lock info */
71
TinaShare *share; /* Shared lock info */
58
72
off_t current_position; /* Current position in the file during a file scan */
59
73
off_t next_position; /* Next position in the file scan */
60
74
off_t local_saved_data_file_length; /* save position for reads */
61
75
off_t temp_file_length;
62
uchar byte_buffer[IO_SIZE];
76
unsigned char byte_buffer[IO_SIZE];
63
77
Transparent_file *file_buff;
64
File data_file; /* File handler for readers */
65
File update_temp_file;
78
int data_file; /* File Cursor for readers */
68
82
The chain contains "holes" in the file, occured because of
72
86
tina_set chain_buffer[DEFAULT_CHAIN_LENGTH];
74
88
tina_set *chain_ptr;
89
unsigned char chain_alloced;
76
90
uint32_t chain_size;
77
uint local_data_file_version; /* Saved version of the data file used */
91
uint32_t local_data_file_version; /* Saved version of the data file used */
78
92
bool records_is_known;
93
drizzled::memory::Root blobroot;
82
95
bool get_write_pos(off_t *end_pos, tina_set *closest_hole);
83
96
int open_update_temp_file_if_needed();
84
97
int init_tina_writer();
85
98
int init_data_file();
88
ha_tina(handlerton *hton, TABLE_SHARE *table_arg);
101
ha_tina(drizzled::plugin::StorageEngine &engine, TableShare &table_arg);
91
104
if (chain_alloced)
96
109
const char *table_type(void) const { return "CSV"; }
97
const char *index_type(uint inx __attribute__((unused)))
110
const char *index_type(uint32_t)
98
111
{ return "NONE"; }
99
const char **bas_ext() const;
100
uint64_t table_flags() const
102
return (HA_NO_TRANSACTIONS | HA_REC_NOT_IN_SEQ | HA_NO_AUTO_INCREMENT |
103
HA_BINLOG_ROW_CAPABLE | HA_BINLOG_STMT_CAPABLE);
105
uint32_t index_flags(uint idx __attribute__((unused)),
106
uint part __attribute__((unused)),
107
bool all_parts __attribute__((unused))) const
110
We will never have indexes so this will never be called(AKA we return
115
uint max_record_length() const { return HA_MAX_REC_LENGTH; }
116
uint max_keys() const { return 0; }
117
uint max_key_parts() const { return 0; }
118
uint max_key_length() const { return 0; }
120
114
Called in test_quick_select to determine if indexes should be used.
122
116
virtual double scan_time() { return (double) (stats.records+stats.deleted) / 20.0+10; }
123
118
/* The next method will never be called */
124
119
virtual bool fast_key_read() { return 1;}
126
121
TODO: return actual upper bound of number of records in the table.
127
122
(e.g. save number of records seen on full table scan and/or use file size
130
125
ha_rows estimate_rows_upper_bound() { return HA_POS_ERROR; }
132
int open(const char *name, int mode, uint open_options);
127
int open(const char *name, int mode, uint32_t open_options);
134
int write_row(uchar * buf);
135
int update_row(const uchar * old_data, uchar * new_data);
136
int delete_row(const uchar * buf);
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);
137
132
int rnd_init(bool scan=1);
138
int rnd_next(uchar *buf);
139
int rnd_pos(uchar * buf, uchar *pos);
140
bool check_and_repair(THD *thd);
141
int check(THD* thd, HA_CHECK_OPT* check_opt);
142
bool is_crashed() const;
133
int rnd_next(unsigned char *buf);
134
int rnd_pos(unsigned char * buf, unsigned char *pos);
144
int repair(THD* thd, HA_CHECK_OPT* check_opt);
136
TinaShare *get_share(const char *table_name);
138
int repair(Session* session, HA_CHECK_OPT* check_opt);
145
139
/* This is required for SQL layer to know that we support autorepair */
146
bool auto_repair() const { return 1; }
147
void position(const uchar *record);
140
void position(const unsigned char *record);
149
142
int delete_all_rows(void);
150
int create(const char *name, TABLE *form, HA_CREATE_INFO *create_info);
151
bool check_if_incompatible_data(HA_CREATE_INFO *info,
154
THR_LOCK_DATA **store_lock(THD *thd, THR_LOCK_DATA **to,
155
enum thr_lock_type lock_type);
158
These functions used to get/update status of the handler.
145
These functions used to get/update status of the Cursor.
159
146
Needed to enable concurrent inserts.
161
148
void get_status();
162
149
void update_status();
164
151
/* The following methods were added just for TINA */
165
int encode_quote(uchar *buf);
166
int find_current_row(uchar *buf);
152
int encode_quote(unsigned char *buf);
153
int find_current_row(unsigned char *buf);
167
154
int chain_append();
157
#endif /* PLUGIN_CSV_HA_TINA_H */