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| 1 | <?php |
| 2 | /** |
| 3 | * |
| 4 | * This file is part of the phpBB Forum Software package. |
| 5 | * |
| 6 | * @copyright (c) phpBB Limited <https://www.phpbb.com> |
| 7 | * @license GNU General Public License, version 2 (GPL-2.0) |
| 8 | * |
| 9 | * For full copyright and license information, please see |
| 10 | * the docs/CREDITS.txt file. |
| 11 | * |
| 12 | */ |
| 13 | |
| 14 | namespace phpbb\db\driver; |
| 15 | |
| 16 | interface driver_interface |
| 17 | { |
| 18 | /** |
| 19 | * Set value for load_time debug parameter |
| 20 | * |
| 21 | * @param bool $value |
| 22 | */ |
| 23 | public function set_debug_load_time($value); |
| 24 | |
| 25 | /** |
| 26 | * Set value for sql_explain debug parameter |
| 27 | * |
| 28 | * @param bool $value |
| 29 | */ |
| 30 | public function set_debug_sql_explain($value); |
| 31 | |
| 32 | /** |
| 33 | * Gets the name of the sql layer. |
| 34 | * |
| 35 | * @return string |
| 36 | */ |
| 37 | public function get_sql_layer(); |
| 38 | |
| 39 | /** |
| 40 | * Gets the name of the database. |
| 41 | * |
| 42 | * @return string |
| 43 | */ |
| 44 | public function get_db_name(); |
| 45 | |
| 46 | /** |
| 47 | * Wildcards for matching any (%) character within LIKE expressions |
| 48 | * |
| 49 | * @return string |
| 50 | */ |
| 51 | public function get_any_char(); |
| 52 | |
| 53 | /** |
| 54 | * Wildcards for matching exactly one (_) character within LIKE expressions |
| 55 | * |
| 56 | * @return string |
| 57 | */ |
| 58 | public function get_one_char(); |
| 59 | |
| 60 | /** |
| 61 | * Gets the time spent into the queries |
| 62 | * |
| 63 | * @return int |
| 64 | */ |
| 65 | public function get_sql_time(); |
| 66 | |
| 67 | /** |
| 68 | * Gets the connect ID. |
| 69 | * |
| 70 | * @return mixed |
| 71 | */ |
| 72 | public function get_db_connect_id(); |
| 73 | |
| 74 | /** |
| 75 | * Indicates if an error was triggered. |
| 76 | * |
| 77 | * @return bool |
| 78 | */ |
| 79 | public function get_sql_error_triggered(); |
| 80 | |
| 81 | /** |
| 82 | * Gets the last faulty query |
| 83 | * |
| 84 | * @return string |
| 85 | */ |
| 86 | public function get_sql_error_sql(); |
| 87 | |
| 88 | /** |
| 89 | * Indicates if we are in a transaction. |
| 90 | * |
| 91 | * @return bool |
| 92 | */ |
| 93 | public function get_transaction(); |
| 94 | |
| 95 | /** |
| 96 | * Gets the returned error. |
| 97 | * |
| 98 | * @return array |
| 99 | */ |
| 100 | public function get_sql_error_returned(); |
| 101 | |
| 102 | /** |
| 103 | * Indicates if multiple insertion can be used |
| 104 | * |
| 105 | * @return bool |
| 106 | */ |
| 107 | public function get_multi_insert(); |
| 108 | |
| 109 | /** |
| 110 | * Set if multiple insertion can be used |
| 111 | * |
| 112 | * @param bool $multi_insert |
| 113 | */ |
| 114 | public function set_multi_insert($multi_insert); |
| 115 | |
| 116 | /** |
| 117 | * Gets the exact number of rows in a specified table. |
| 118 | * |
| 119 | * @param string $table_name Table name |
| 120 | * @return string Exact number of rows in $table_name. |
| 121 | */ |
| 122 | public function get_row_count($table_name); |
| 123 | |
| 124 | /** |
| 125 | * Gets the estimated number of rows in a specified table. |
| 126 | * |
| 127 | * @param string $table_name Table name |
| 128 | * @return string Number of rows in $table_name. |
| 129 | * Prefixed with ~ if estimated (otherwise exact). |
| 130 | */ |
| 131 | public function get_estimated_row_count($table_name); |
| 132 | |
| 133 | /** |
| 134 | * Run LOWER() on DB column of type text (i.e. neither varchar nor char). |
| 135 | * |
| 136 | * @param string $column_name The column name to use |
| 137 | * @return string A SQL statement like "LOWER($column_name)" |
| 138 | */ |
| 139 | public function sql_lower_text($column_name); |
| 140 | |
| 141 | /** |
| 142 | * Display sql error page |
| 143 | * |
| 144 | * @param string $sql The SQL query causing the error |
| 145 | * @return mixed Returns the full error message, if $this->return_on_error |
| 146 | * is set, null otherwise |
| 147 | */ |
| 148 | public function sql_error($sql = ''); |
| 149 | |
| 150 | /** |
| 151 | * Returns whether results of a query need to be buffered to run a |
| 152 | * transaction while iterating over them. |
| 153 | * |
| 154 | * @return bool Whether buffering is required. |
| 155 | */ |
| 156 | public function sql_buffer_nested_transactions(); |
| 157 | |
| 158 | /** |
| 159 | * Run binary OR operator on DB column. |
| 160 | * |
| 161 | * @param string $column_name The column name to use |
| 162 | * @param int $bit The value to use for the OR operator, |
| 163 | * will be converted to (1 << $bit). Is used by options, |
| 164 | * using the number schema... 0, 1, 2...29 |
| 165 | * @param string $compare Any custom SQL code after the check (e.g. "= 0") |
| 166 | * @return string A SQL statement like "$column | (1 << $bit) {$compare}" |
| 167 | */ |
| 168 | public function sql_bit_or($column_name, $bit, $compare = ''); |
| 169 | |
| 170 | /** |
| 171 | * Version information about used database |
| 172 | * |
| 173 | * @param bool $raw Only return the fetched sql_server_version |
| 174 | * @param bool $use_cache Is it safe to retrieve the value from the cache |
| 175 | * @return string sql server version |
| 176 | */ |
| 177 | public function sql_server_info($raw = false, $use_cache = true); |
| 178 | |
| 179 | /** |
| 180 | * Return on error or display error message |
| 181 | * |
| 182 | * @param bool $fail Should we return on errors, or stop |
| 183 | * @return void |
| 184 | */ |
| 185 | public function sql_return_on_error($fail = false); |
| 186 | |
| 187 | /** |
| 188 | * Build sql statement from an array |
| 189 | * |
| 190 | * @param string $query Should be on of the following strings: |
| 191 | * INSERT, INSERT_SELECT, UPDATE, SELECT, DELETE |
| 192 | * @param array $assoc_ary Array with "column => value" pairs |
| 193 | * @return string|false A SQL statement like "c1 = 'a' AND c2 = 'b'", false on invalid assoc_ary |
| 194 | */ |
| 195 | public function sql_build_array($query, $assoc_ary = []); |
| 196 | |
| 197 | /** |
| 198 | * Fetch all rows |
| 199 | * |
| 200 | * @param mixed $query_id Already executed query to get the rows from, |
| 201 | * if false, the last query will be used. |
| 202 | * @return mixed Nested array if the query had rows, false otherwise |
| 203 | */ |
| 204 | public function sql_fetchrowset($query_id = false); |
| 205 | |
| 206 | /** |
| 207 | * SQL Transaction |
| 208 | * |
| 209 | * @param string $status Should be one of the following strings: |
| 210 | * begin, commit, rollback |
| 211 | * @return mixed Buffered, seekable result handle, false on error |
| 212 | */ |
| 213 | public function sql_transaction($status = 'begin'); |
| 214 | |
| 215 | /** |
| 216 | * Build a concatenated expression |
| 217 | * |
| 218 | * @param string $expr1 Base SQL expression where we append the second one |
| 219 | * @param string $expr2 SQL expression that is appended to the first expression |
| 220 | * @return string Concatenated string |
| 221 | */ |
| 222 | public function sql_concatenate($expr1, $expr2); |
| 223 | |
| 224 | /** |
| 225 | * Build a case expression |
| 226 | * |
| 227 | * Note: The two statements action_true and action_false must have the same |
| 228 | * data type (int, vchar, ...) in the database! |
| 229 | * |
| 230 | * @param string $condition The condition which must be true, |
| 231 | * to use action_true rather then action_else |
| 232 | * @param string $action_true SQL expression that is used, if the condition is true |
| 233 | * @param mixed $action_false SQL expression that is used, if the condition is false |
| 234 | * @return string CASE expression including the condition and statements |
| 235 | */ |
| 236 | public function sql_case($condition, $action_true, $action_false = false); |
| 237 | |
| 238 | /** |
| 239 | * Build sql statement from array for select and select distinct statements |
| 240 | * |
| 241 | * Possible query values: SELECT, SELECT_DISTINCT |
| 242 | * |
| 243 | * @param string $query Should be one of: SELECT, SELECT_DISTINCT |
| 244 | * @param array $array Array with the query data: |
| 245 | * SELECT A comma imploded list of columns to select |
| 246 | * FROM Array with "table => alias" pairs, |
| 247 | * (alias can also be an array) |
| 248 | * Optional: LEFT_JOIN Array of join entries: |
| 249 | * FROM Table that should be joined |
| 250 | * ON Condition for the join |
| 251 | * Optional: WHERE Where SQL statement |
| 252 | * Optional: GROUP_BY Group by SQL statement |
| 253 | * Optional: ORDER_BY Order by SQL statement |
| 254 | * @return string A SQL statement ready for execution |
| 255 | */ |
| 256 | public function sql_build_query($query, $array); |
| 257 | |
| 258 | /** |
| 259 | * Fetch field |
| 260 | * if rownum is false, the current row is used, else it is pointing to the row (zero-based) |
| 261 | * |
| 262 | * @param string $field Name of the column |
| 263 | * @param mixed $rownum Row number, if false the current row will be used |
| 264 | * and the row curser will point to the next row |
| 265 | * Note: $rownum is 0 based |
| 266 | * @param mixed $query_id Already executed query to get the rows from, |
| 267 | * if false, the last query will be used. |
| 268 | * @return mixed String value of the field in the selected row, |
| 269 | * false, if the row does not exist |
| 270 | */ |
| 271 | public function sql_fetchfield($field, $rownum = false, &$query_id = false); |
| 272 | |
| 273 | /** |
| 274 | * Fetch current row |
| 275 | * |
| 276 | * @param mixed $query_id Already executed query to get the rows from, |
| 277 | * if false, the last query will be used. |
| 278 | * @return mixed Array with the current row, |
| 279 | * false, if the row does not exist |
| 280 | */ |
| 281 | public function sql_fetchrow($query_id = false); |
| 282 | |
| 283 | /** |
| 284 | * Returns SQL string to cast a string expression to an int. |
| 285 | * |
| 286 | * @param string $expression An expression evaluating to string |
| 287 | * @return string Expression returning an int |
| 288 | */ |
| 289 | public function cast_expr_to_bigint($expression); |
| 290 | |
| 291 | /** |
| 292 | |
| 293 | * Gets the ID of the **last** inserted row immediately after an INSERT |
| 294 | * statement. |
| 295 | * |
| 296 | * **Note**: Despite the name, the returned ID refers to the row that has |
| 297 | * just been inserted, rather than the hypothetical ID of the next row if a |
| 298 | * new one was to be inserted. |
| 299 | * |
| 300 | * The returned value can be used for selecting the item that has just been |
| 301 | * inserted or for updating another table with an ID pointing to that item. |
| 302 | * |
| 303 | * Alias of `sql_last_inserted_id`. |
| 304 | * |
| 305 | * @deprecated 3.3.11-RC1 Replaced by sql_last_inserted_id(), to be removed in 4.1.0-a1 |
| 306 | * |
| 307 | * @return int|false Auto-incremented value of the last inserted row |
| 308 | */ |
| 309 | public function sql_nextid(); |
| 310 | |
| 311 | /** |
| 312 | * Gets the ID of the last inserted row immediately after an INSERT |
| 313 | * statement. The returned value can be used for selecting the item that has |
| 314 | * just been inserted or for updating another table with an ID pointing to |
| 315 | * that item. |
| 316 | * |
| 317 | * @return int|false Auto-incremented value of the last inserted row |
| 318 | */ |
| 319 | public function sql_last_inserted_id(); |
| 320 | |
| 321 | /** |
| 322 | * Add to query count |
| 323 | * |
| 324 | * @param bool $cached Is this query cached? |
| 325 | * @return void |
| 326 | */ |
| 327 | public function sql_add_num_queries($cached = false); |
| 328 | |
| 329 | /** |
| 330 | * Build LIMIT query |
| 331 | * |
| 332 | * @param string $query The SQL query to execute |
| 333 | * @param int $total The number of rows to select |
| 334 | * @param int $offset |
| 335 | * @param int $cache_ttl Either 0 to avoid caching or |
| 336 | * the time in seconds which the result shall be kept in cache |
| 337 | * @return mixed Buffered, seekable result handle, false on error |
| 338 | */ |
| 339 | public function sql_query_limit($query, $total, $offset = 0, $cache_ttl = 0); |
| 340 | |
| 341 | /** |
| 342 | * Base query method |
| 343 | * |
| 344 | * @param string $query The SQL query to execute |
| 345 | * @param int $cache_ttl Either 0 to avoid caching or |
| 346 | * the time in seconds which the result shall be kept in cache |
| 347 | * @return mixed Buffered, seekable result handle, false on error |
| 348 | */ |
| 349 | public function sql_query($query = '', $cache_ttl = 0); |
| 350 | |
| 351 | /** |
| 352 | * Returns SQL string to cast an integer expression to a string. |
| 353 | * |
| 354 | * @param string $expression An expression evaluating to int |
| 355 | * @return string Expression returning a string |
| 356 | */ |
| 357 | public function cast_expr_to_string($expression); |
| 358 | |
| 359 | /** |
| 360 | * Connect to server |
| 361 | * |
| 362 | * @param string $sqlserver Address of the database server |
| 363 | * @param string $sqluser User name of the SQL user |
| 364 | * @param string $sqlpassword Password of the SQL user |
| 365 | * @param string $database Name of the database |
| 366 | * @param mixed $port Port of the database server |
| 367 | * @param bool $persistency |
| 368 | * @param bool $new_link Should a new connection be established |
| 369 | * @return mixed Connection ID on success, string error message otherwise |
| 370 | */ |
| 371 | public function sql_connect($sqlserver, $sqluser, $sqlpassword, $database, $port = false, $persistency = false, $new_link = false); |
| 372 | |
| 373 | /** |
| 374 | * Run binary AND operator on DB column. |
| 375 | * Results in sql statement: "{$column_name} & (1 << {$bit}) {$compare}" |
| 376 | * |
| 377 | * @param string $column_name The column name to use |
| 378 | * @param int $bit The value to use for the AND operator, |
| 379 | * will be converted to (1 << $bit). Is used by |
| 380 | * options, using the number schema: 0, 1, 2...29 |
| 381 | * @param string $compare Any custom SQL code after the check (for example "= 0") |
| 382 | * @return string A SQL statement like: "{$column} & (1 << {$bit}) {$compare}" |
| 383 | */ |
| 384 | public function sql_bit_and($column_name, $bit, $compare = ''); |
| 385 | |
| 386 | /** |
| 387 | * Free sql result |
| 388 | * |
| 389 | * @param mixed $query_id Already executed query result, |
| 390 | * if false, the last query will be used. |
| 391 | * @return void |
| 392 | */ |
| 393 | public function sql_freeresult($query_id = false); |
| 394 | |
| 395 | /** |
| 396 | * Return number of sql queries and cached sql queries used |
| 397 | * |
| 398 | * @param bool $cached Should we return the number of cached or normal queries? |
| 399 | * @return int Number of queries that have been executed |
| 400 | */ |
| 401 | public function sql_num_queries($cached = false); |
| 402 | |
| 403 | /** |
| 404 | * Run more than one insert statement. |
| 405 | * |
| 406 | * @param string $table Table name to run the statements on |
| 407 | * @param array $sql_ary Multi-dimensional array holding the statement data |
| 408 | * @return bool false if no statements were executed. |
| 409 | */ |
| 410 | public function sql_multi_insert($table, $sql_ary); |
| 411 | |
| 412 | /** |
| 413 | * Return number of affected rows |
| 414 | * |
| 415 | * @return mixed Number of the affected rows by the last query |
| 416 | * false if no query has been run before |
| 417 | */ |
| 418 | public function sql_affectedrows(); |
| 419 | |
| 420 | /** |
| 421 | * DBAL garbage collection, close SQL connection |
| 422 | * |
| 423 | * @return mixed False if no connection was opened before, |
| 424 | * Server response otherwise |
| 425 | */ |
| 426 | public function sql_close(); |
| 427 | |
| 428 | /** |
| 429 | * Seek to given row number |
| 430 | * |
| 431 | * @param mixed $rownum Row number the curser should point to |
| 432 | * Note: $rownum is 0 based |
| 433 | * @param mixed $query_id ID of the query to set the row cursor on |
| 434 | * if false, the last query will be used. |
| 435 | * $query_id will then be set correctly |
| 436 | * @return bool False if something went wrong |
| 437 | */ |
| 438 | public function sql_rowseek($rownum, &$query_id); |
| 439 | |
| 440 | /** |
| 441 | * Escape string used in sql query |
| 442 | * |
| 443 | * @param string $msg String to be escaped |
| 444 | * @return string Escaped version of $msg |
| 445 | */ |
| 446 | public function sql_escape($msg); |
| 447 | |
| 448 | /** |
| 449 | * Correctly adjust LIKE expression for special characters |
| 450 | * Some DBMS are handling them in a different way |
| 451 | * |
| 452 | * @param string $expression The expression to use. Every wildcard is |
| 453 | * escaped, except $this->any_char and $this->one_char |
| 454 | * @return string A SQL statement like: "LIKE 'bertie_%'" |
| 455 | */ |
| 456 | public function sql_like_expression($expression); |
| 457 | |
| 458 | /** |
| 459 | * Correctly adjust NOT LIKE expression for special characters |
| 460 | * Some DBMS are handling them in a different way |
| 461 | * |
| 462 | * @param string $expression The expression to use. Every wildcard is |
| 463 | * escaped, except $this->any_char and $this->one_char |
| 464 | * @return string A SQL statement like: "NOT LIKE 'bertie_%'" |
| 465 | */ |
| 466 | public function sql_not_like_expression($expression); |
| 467 | |
| 468 | /** |
| 469 | * Explain queries |
| 470 | * |
| 471 | * @param string $mode Available modes: display, start, stop, |
| 472 | * add_select_row, fromcache, record_fromcache |
| 473 | * @param string $query The Query that should be explained |
| 474 | * @return mixed Either a full HTML page, boolean or null |
| 475 | */ |
| 476 | public function sql_report($mode, $query = ''); |
| 477 | |
| 478 | /** |
| 479 | * Build IN or NOT IN sql comparison string, uses <> or = on single element |
| 480 | * arrays to improve comparison speed |
| 481 | * |
| 482 | * @param string $field Name of the sql column that shall be compared |
| 483 | * @param array $array Array of values that are (not) allowed |
| 484 | * @param bool $negate true for NOT IN (), false for IN () |
| 485 | * @param bool $allow_empty_set If true, allow $array to be empty, |
| 486 | * this function will return 1=1 or 1=0 then. |
| 487 | * @return string A SQL statement like: "IN (1, 2, 3, 4)" or "= 1" |
| 488 | */ |
| 489 | public function sql_in_set($field, $array, $negate = false, $allow_empty_set = false); |
| 490 | |
| 491 | /** |
| 492 | * Quote identifiers used in sql query |
| 493 | * |
| 494 | * @param string $msg String to be quoted |
| 495 | * @return string Quoted version of $msg |
| 496 | */ |
| 497 | public function sql_quote($msg); |
| 498 | |
| 499 | /** |
| 500 | * Ensure query ID can be used by cache |
| 501 | * |
| 502 | * @param mixed $query_id Mixed type query id |
| 503 | * |
| 504 | * @return int|string|null Query id in string or integer format |
| 505 | */ |
| 506 | public function clean_query_id(mixed $query_id): int|string|null; |
| 507 | } |