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| 1 | <?php |
| 2 | |
| 3 | namespace Wikimedia\Rdbms; |
| 4 | |
| 5 | use InvalidArgumentException; |
| 6 | use UnexpectedValueException; |
| 7 | |
| 8 | /** |
| 9 | * Build INSERT queries with a fluent interface. |
| 10 | * |
| 11 | * Each query builder object must be used for a single database query only, |
| 12 | * and not be reused afterwards. To run multiple similar queries, you can |
| 13 | * create a query builder to set up most of your query, which you can use |
| 14 | * as a "template" to clone. You can then modify the cloned object for |
| 15 | * each individual query. |
| 16 | * |
| 17 | * @since 1.41 |
| 18 | * @stable to extend |
| 19 | * @ingroup Database |
| 20 | */ |
| 21 | class InsertQueryBuilder { |
| 22 | /** |
| 23 | * @var string The table name to be passed to IDatabase::insert() |
| 24 | */ |
| 25 | private $table = ''; |
| 26 | |
| 27 | /** |
| 28 | * @var list<array> The rows to be passed to IDatabase::insert() |
| 29 | */ |
| 30 | private $rows = []; |
| 31 | |
| 32 | /** |
| 33 | * @var string The caller (function name) to be passed to IDatabase::insert() |
| 34 | */ |
| 35 | private $caller = __CLASS__; |
| 36 | |
| 37 | /** |
| 38 | * @var bool whether this is an upsert or not |
| 39 | */ |
| 40 | private $upsert = false; |
| 41 | |
| 42 | /** |
| 43 | * @var array The set values to be passed to IDatabase::upsert() |
| 44 | */ |
| 45 | private $set = []; |
| 46 | |
| 47 | /** |
| 48 | * @var string[] The unique keys to be passed to IDatabase::upsert() |
| 49 | */ |
| 50 | private $uniqueIndexFields = []; |
| 51 | |
| 52 | /** |
| 53 | * @var array The options to be passed to IDatabase::insert() |
| 54 | */ |
| 55 | protected $options = []; |
| 56 | |
| 57 | /** @var IDatabase */ |
| 58 | protected $db; |
| 59 | |
| 60 | /** |
| 61 | * Only for use in subclasses. To create a InsertQueryBuilder instance, |
| 62 | * use `$db->newInsertQueryBuilder()` instead. |
| 63 | * |
| 64 | * @param IDatabase $db |
| 65 | */ |
| 66 | public function __construct( IDatabase $db ) { |
| 67 | $this->db = $db; |
| 68 | } |
| 69 | |
| 70 | /** |
| 71 | * Change the IDatabase object the query builder is bound to. The specified |
| 72 | * IDatabase will subsequently be used to execute the query. |
| 73 | * |
| 74 | * @param IDatabase $db |
| 75 | * @return $this |
| 76 | */ |
| 77 | public function connection( IDatabase $db ) { |
| 78 | if ( $this->db->getType() !== $db->getType() ) { |
| 79 | throw new InvalidArgumentException( |
| 80 | __METHOD__ . ' cannot switch to a database of a different type.' |
| 81 | ); |
| 82 | } |
| 83 | $this->db = $db; |
| 84 | return $this; |
| 85 | } |
| 86 | |
| 87 | /** |
| 88 | * Set the query parameters to the given values, appending to the values |
| 89 | * which were already set. This can be used to interface with legacy code. |
| 90 | * If a key is omitted, the previous value will be retained. |
| 91 | * |
| 92 | * The parameters must be formatted as required by Database::insert. |
| 93 | * |
| 94 | * @param array $info Associative array of query info, with keys: |
| 95 | * - table: The table name to be passed to Database::insert() |
| 96 | * - rows: The rows to be inserted |
| 97 | * - options: The query options |
| 98 | * - upsert: Whether it's insert or upsert |
| 99 | * - uniqueIndexFields: Fields of the unique index |
| 100 | * - set: The set array |
| 101 | * - caller: The caller signature |
| 102 | * |
| 103 | * @return $this |
| 104 | */ |
| 105 | public function queryInfo( $info ) { |
| 106 | if ( isset( $info['table'] ) ) { |
| 107 | $this->table( $info['table'] ); |
| 108 | } |
| 109 | if ( isset( $info['rows'] ) ) { |
| 110 | $this->rows( $info['rows'] ); |
| 111 | } |
| 112 | if ( isset( $info['options'] ) ) { |
| 113 | $this->options( (array)$info['options'] ); |
| 114 | } |
| 115 | if ( isset( $info['upsert'] ) ) { |
| 116 | $this->onDuplicateKeyUpdate(); |
| 117 | } |
| 118 | if ( isset( $info['uniqueIndexFields'] ) ) { |
| 119 | $this->uniqueIndexFields( (array)$info['uniqueIndexFields'] ); |
| 120 | } |
| 121 | if ( isset( $info['set'] ) ) { |
| 122 | $this->set( (array)$info['set'] ); |
| 123 | } |
| 124 | if ( isset( $info['caller'] ) ) { |
| 125 | $this->caller( $info['caller'] ); |
| 126 | } |
| 127 | return $this; |
| 128 | } |
| 129 | |
| 130 | /** |
| 131 | * Manually set the table name to be passed to IDatabase::insert() |
| 132 | * |
| 133 | * @param string $table The table name |
| 134 | * @param-taint $table exec_sql |
| 135 | * @return $this |
| 136 | */ |
| 137 | public function table( $table ) { |
| 138 | $this->table = $table; |
| 139 | return $this; |
| 140 | } |
| 141 | |
| 142 | /** |
| 143 | * Set table for the query. Alias for table(). |
| 144 | * |
| 145 | * @param string $table The table name |
| 146 | * @param-taint $table exec_sql |
| 147 | * @return $this |
| 148 | */ |
| 149 | public function insertInto( string $table ) { |
| 150 | return $this->table( $table ); |
| 151 | } |
| 152 | |
| 153 | /** |
| 154 | * Set table for the query. Alias for table(). |
| 155 | * |
| 156 | * @param string $table The table name |
| 157 | * @param-taint $table exec_sql |
| 158 | * @return $this |
| 159 | */ |
| 160 | public function insert( string $table ) { |
| 161 | return $this->table( $table ); |
| 162 | } |
| 163 | |
| 164 | /** |
| 165 | * Manually set an option in the $options array to be passed to |
| 166 | * IDatabase::insert() |
| 167 | * |
| 168 | * @param string $name The option name |
| 169 | * @param mixed $value The option value, or null for a boolean option |
| 170 | * @return $this |
| 171 | */ |
| 172 | public function option( $name, $value = null ) { |
| 173 | if ( $value === null ) { |
| 174 | $this->options[] = $name; |
| 175 | } else { |
| 176 | $this->options[$name] = $value; |
| 177 | } |
| 178 | return $this; |
| 179 | } |
| 180 | |
| 181 | /** |
| 182 | * Manually set multiple options in the $options array to be passed to |
| 183 | * IDatabase::insert(). |
| 184 | * |
| 185 | * @param array $options |
| 186 | * @return $this |
| 187 | */ |
| 188 | public function options( array $options ) { |
| 189 | $this->options = array_merge( $this->options, $options ); |
| 190 | return $this; |
| 191 | } |
| 192 | |
| 193 | /** |
| 194 | * Add rows to be inserted. |
| 195 | * |
| 196 | * @param list<array> $rows |
| 197 | * $rows should be an integer-keyed list of such string-keyed maps, defining a list of new rows. |
| 198 | * The keys in each map must be identical to each other and in the same order. |
| 199 | * The rows must not collide with each other. |
| 200 | * |
| 201 | * @return $this |
| 202 | */ |
| 203 | public function rows( array $rows ) { |
| 204 | $this->rows = array_merge( $this->rows, $rows ); |
| 205 | return $this; |
| 206 | } |
| 207 | |
| 208 | /** |
| 209 | * Add one row to be inserted. |
| 210 | * |
| 211 | * @param array $row |
| 212 | * $row must be a string-keyed map of (column name => value) defining a new row. Values are |
| 213 | * treated as literals and quoted appropriately; null is interpreted as NULL. |
| 214 | * |
| 215 | * @return $this |
| 216 | */ |
| 217 | public function row( array $row ) { |
| 218 | $this->rows[] = $row; |
| 219 | return $this; |
| 220 | } |
| 221 | |
| 222 | /** |
| 223 | * Enable the IGNORE option. |
| 224 | * |
| 225 | * Skip insertion of rows that would cause unique key conflicts. |
| 226 | * IDatabase::affectedRows() can be used to determine how many rows were inserted. |
| 227 | * |
| 228 | * @return $this |
| 229 | */ |
| 230 | public function ignore() { |
| 231 | $this->options[] = 'IGNORE'; |
| 232 | return $this; |
| 233 | } |
| 234 | |
| 235 | /** |
| 236 | * Do an update instead of insert |
| 237 | * |
| 238 | * @return $this |
| 239 | */ |
| 240 | public function onDuplicateKeyUpdate() { |
| 241 | $this->upsert = true; |
| 242 | return $this; |
| 243 | } |
| 244 | |
| 245 | /** |
| 246 | * Set the unique index fields |
| 247 | * |
| 248 | * @param string|string[] $uniqueIndexFields |
| 249 | * @return $this |
| 250 | */ |
| 251 | public function uniqueIndexFields( $uniqueIndexFields ) { |
| 252 | if ( is_string( $uniqueIndexFields ) ) { |
| 253 | $uniqueIndexFields = [ $uniqueIndexFields ]; |
| 254 | } |
| 255 | $this->uniqueIndexFields = $uniqueIndexFields; |
| 256 | return $this; |
| 257 | } |
| 258 | |
| 259 | /** |
| 260 | * Add SET part to the query. It takes an array containing arrays of column names map to |
| 261 | * the set values. |
| 262 | * |
| 263 | * @param string|array $set |
| 264 | * @param-taint $set exec_sql_numkey |
| 265 | * |
| 266 | * Combination map/list where each string-keyed entry maps a column |
| 267 | * to a literal assigned value and each integer-keyed value is a SQL expression in the |
| 268 | * format of a column assignment within UPDATE...SET. The (column => value) entries are |
| 269 | * convenient due to automatic value quoting and conversion of null to NULL. The SQL |
| 270 | * assignment format is useful for updates like "column = column + X". All assignments |
| 271 | * have no defined execution order, so they should not depend on each other. Do not |
| 272 | * modify AUTOINCREMENT or UUID columns in assignments. |
| 273 | * |
| 274 | * Untrusted user input is safe in the values of string keys, however untrusted |
| 275 | * input must not be used in the array key names or in the values of numeric keys. |
| 276 | * Escaping of untrusted input used in values of numeric keys should be done via |
| 277 | * IDatabase::addQuotes() |
| 278 | * |
| 279 | * @return $this |
| 280 | */ |
| 281 | public function set( $set ) { |
| 282 | if ( is_array( $set ) ) { |
| 283 | foreach ( $set as $key => $value ) { |
| 284 | if ( is_int( $key ) ) { |
| 285 | $this->set[] = $value; |
| 286 | } else { |
| 287 | $this->set[$key] = $value; |
| 288 | } |
| 289 | } |
| 290 | } else { |
| 291 | $this->set[] = $set; |
| 292 | } |
| 293 | return $this; |
| 294 | } |
| 295 | |
| 296 | /** |
| 297 | * Add set values to the query. Alias for set(). |
| 298 | * |
| 299 | * @param string|array $set |
| 300 | * @param-taint $set exec_sql_numkey |
| 301 | * @return $this |
| 302 | */ |
| 303 | public function andSet( $set ) { |
| 304 | return $this->set( $set ); |
| 305 | } |
| 306 | |
| 307 | /** |
| 308 | * Set the method name to be included in an SQL comment. |
| 309 | * |
| 310 | * @param string $fname |
| 311 | * @param-taint $fname exec_sql |
| 312 | * @return $this |
| 313 | */ |
| 314 | public function caller( $fname ) { |
| 315 | $this->caller = $fname; |
| 316 | return $this; |
| 317 | } |
| 318 | |
| 319 | /** |
| 320 | * Run the constructed INSERT query. |
| 321 | */ |
| 322 | public function execute(): void { |
| 323 | if ( !$this->rows ) { |
| 324 | throw new UnexpectedValueException( |
| 325 | __METHOD__ . ' can\'t have empty $rows value' ); |
| 326 | } |
| 327 | if ( $this->table === '' ) { |
| 328 | throw new UnexpectedValueException( |
| 329 | __METHOD__ . ' expects table not to be empty' ); |
| 330 | } |
| 331 | if ( $this->upsert && ( !$this->set || !$this->uniqueIndexFields ) ) { |
| 332 | throw new UnexpectedValueException( |
| 333 | __METHOD__ . ' called with upsert but no set value or unique key has been provided' ); |
| 334 | } |
| 335 | if ( !$this->upsert && ( $this->set || $this->uniqueIndexFields ) ) { |
| 336 | throw new UnexpectedValueException( |
| 337 | __METHOD__ . ' is not called with upsert but set value or unique key has been provided' ); |
| 338 | } |
| 339 | if ( $this->upsert ) { |
| 340 | $this->db->upsert( $this->table, $this->rows, [ $this->uniqueIndexFields ], $this->set, $this->caller ); |
| 341 | return; |
| 342 | } |
| 343 | $this->db->insert( $this->table, $this->rows, $this->caller, $this->options ); |
| 344 | } |
| 345 | |
| 346 | /** |
| 347 | * Get an associative array describing the query in terms of its raw parameters to |
| 348 | * Database::insert(). This can be used to interface with legacy code. |
| 349 | * |
| 350 | * @return array The query info array, with keys: |
| 351 | * - table: The table name |
| 352 | * - rows: The rows array |
| 353 | * - options: The query options |
| 354 | * - upsert: Whether it's insert or upsert |
| 355 | * - uniqueIndexFields: Fields of the unique index |
| 356 | * - set: The set array |
| 357 | * - caller: The caller signature |
| 358 | */ |
| 359 | public function getQueryInfo() { |
| 360 | $info = [ |
| 361 | 'table' => $this->table, |
| 362 | 'rows' => $this->rows, |
| 363 | 'upsert' => $this->upsert, |
| 364 | 'set' => $this->set, |
| 365 | 'uniqueIndexFields' => $this->uniqueIndexFields, |
| 366 | 'options' => $this->options, |
| 367 | ]; |
| 368 | if ( $this->caller !== __CLASS__ ) { |
| 369 | $info['caller'] = $this->caller; |
| 370 | } |
| 371 | return $info; |
| 372 | } |
| 373 | } |