doctrine /
dbal
Complex classes like DB2Platform often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use DB2Platform, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
||
| 23 | class DB2Platform extends AbstractPlatform |
||
| 24 | { |
||
| 25 | /** |
||
| 26 | * {@inheritDoc} |
||
| 27 | */ |
||
| 28 | 27 | public function getBlobTypeDeclarationSQL(array $field) : string |
|
| 33 | |||
| 34 | /** |
||
| 35 | * {@inheritDoc} |
||
| 36 | */ |
||
| 37 | 135 | public function initializeDoctrineTypeMappings() : void |
|
| 38 | { |
||
| 39 | 135 | $this->doctrineTypeMapping = [ |
|
|
|
|||
| 40 | 'bigint' => 'bigint', |
||
| 41 | 'binary' => 'binary', |
||
| 42 | 'blob' => 'blob', |
||
| 43 | 'character' => 'string', |
||
| 44 | 'clob' => 'text', |
||
| 45 | 'date' => 'date', |
||
| 46 | 'decimal' => 'decimal', |
||
| 47 | 'double' => 'float', |
||
| 48 | 'integer' => 'integer', |
||
| 49 | 'real' => 'float', |
||
| 50 | 'smallint' => 'smallint', |
||
| 51 | 'time' => 'time', |
||
| 52 | 'timestamp' => 'datetime', |
||
| 53 | 'varbinary' => 'binary', |
||
| 54 | 'varchar' => 'string', |
||
| 55 | ]; |
||
| 56 | 135 | } |
|
| 57 | |||
| 58 | /** |
||
| 59 | * {@inheritdoc} |
||
| 60 | */ |
||
| 61 | 1107 | public function isCommentedDoctrineType(Type $doctrineType) : bool |
|
| 62 | { |
||
| 63 | 1107 | if ($doctrineType->getName() === Types::BOOLEAN) { |
|
| 64 | // We require a commented boolean type in order to distinguish between boolean and smallint |
||
| 65 | // as both (have to) map to the same native type. |
||
| 66 | 27 | return true; |
|
| 67 | } |
||
| 68 | |||
| 69 | 1080 | return parent::isCommentedDoctrineType($doctrineType); |
|
| 70 | } |
||
| 71 | |||
| 72 | /** |
||
| 73 | * {@inheritDoc} |
||
| 74 | */ |
||
| 75 | 54 | protected function getBinaryTypeDeclarationSQLSnippet(?int $length) : string |
|
| 76 | { |
||
| 77 | 54 | return $this->getCharTypeDeclarationSQLSnippet($length) . ' FOR BIT DATA'; |
|
| 78 | } |
||
| 79 | |||
| 80 | /** |
||
| 81 | * {@inheritDoc} |
||
| 82 | */ |
||
| 83 | 54 | protected function getVarbinaryTypeDeclarationSQLSnippet(?int $length) : string |
|
| 84 | { |
||
| 85 | 54 | return $this->getVarcharTypeDeclarationSQLSnippet($length) . ' FOR BIT DATA'; |
|
| 86 | } |
||
| 87 | |||
| 88 | /** |
||
| 89 | * {@inheritDoc} |
||
| 90 | */ |
||
| 91 | 81 | public function getClobTypeDeclarationSQL(array $field) : string |
|
| 92 | { |
||
| 93 | // todo clob(n) with $field['length']; |
||
| 94 | 81 | return 'CLOB(1M)'; |
|
| 95 | } |
||
| 96 | |||
| 97 | /** |
||
| 98 | * {@inheritDoc} |
||
| 99 | */ |
||
| 100 | 135 | public function getName() : string |
|
| 104 | |||
| 105 | /** |
||
| 106 | * {@inheritDoc} |
||
| 107 | */ |
||
| 108 | 54 | public function getBooleanTypeDeclarationSQL(array $columnDef) : string |
|
| 109 | { |
||
| 110 | 54 | return 'SMALLINT'; |
|
| 111 | } |
||
| 112 | |||
| 113 | /** |
||
| 114 | * {@inheritDoc} |
||
| 115 | */ |
||
| 116 | 324 | public function getIntegerTypeDeclarationSQL(array $columnDef) : string |
|
| 117 | { |
||
| 118 | 324 | return 'INTEGER' . $this->_getCommonIntegerTypeDeclarationSQL($columnDef); |
|
| 119 | } |
||
| 120 | |||
| 121 | /** |
||
| 122 | * {@inheritDoc} |
||
| 123 | */ |
||
| 124 | 27 | public function getBigIntTypeDeclarationSQL(array $columnDef) : string |
|
| 125 | { |
||
| 126 | 27 | return 'BIGINT' . $this->_getCommonIntegerTypeDeclarationSQL($columnDef); |
|
| 127 | } |
||
| 128 | |||
| 129 | /** |
||
| 130 | * {@inheritDoc} |
||
| 131 | */ |
||
| 132 | 27 | public function getSmallIntTypeDeclarationSQL(array $columnDef) : string |
|
| 133 | { |
||
| 134 | 27 | return 'SMALLINT' . $this->_getCommonIntegerTypeDeclarationSQL($columnDef); |
|
| 135 | } |
||
| 136 | |||
| 137 | /** |
||
| 138 | * {@inheritDoc} |
||
| 139 | */ |
||
| 140 | 324 | protected function _getCommonIntegerTypeDeclarationSQL(array $columnDef) : string |
|
| 141 | { |
||
| 142 | 324 | $autoinc = ''; |
|
| 143 | 324 | if (! empty($columnDef['autoincrement'])) { |
|
| 144 | 54 | $autoinc = ' GENERATED BY DEFAULT AS IDENTITY'; |
|
| 145 | } |
||
| 146 | |||
| 147 | 324 | return $autoinc; |
|
| 148 | } |
||
| 149 | |||
| 150 | /** |
||
| 151 | * {@inheritdoc} |
||
| 152 | */ |
||
| 153 | 27 | public function getBitAndComparisonExpression(string $value1, string $value2) : string |
|
| 157 | |||
| 158 | /** |
||
| 159 | * {@inheritdoc} |
||
| 160 | */ |
||
| 161 | 27 | public function getBitOrComparisonExpression(string $value1, string $value2) : string |
|
| 165 | |||
| 166 | /** |
||
| 167 | * {@inheritdoc} |
||
| 168 | */ |
||
| 169 | 27 | protected function getDateArithmeticIntervalExpression(string $date, string $operator, string $interval, string $unit) : string |
|
| 170 | { |
||
| 171 | switch ($unit) { |
||
| 172 | 27 | case DateIntervalUnit::WEEK: |
|
| 173 | 27 | $interval = $this->multiplyInterval($interval, 7); |
|
| 174 | 27 | $unit = DateIntervalUnit::DAY; |
|
| 175 | 27 | break; |
|
| 176 | |||
| 177 | 27 | case DateIntervalUnit::QUARTER: |
|
| 178 | 27 | $interval = $this->multiplyInterval($interval, 3); |
|
| 179 | 27 | $unit = DateIntervalUnit::MONTH; |
|
| 180 | 27 | break; |
|
| 181 | } |
||
| 182 | |||
| 183 | 27 | return $date . ' ' . $operator . ' ' . $interval . ' ' . $unit; |
|
| 184 | } |
||
| 185 | |||
| 186 | /** |
||
| 187 | * {@inheritdoc} |
||
| 188 | */ |
||
| 189 | 27 | public function getDateDiffExpression(string $date1, string $date2) : string |
|
| 190 | { |
||
| 191 | 27 | return 'DAYS(' . $date1 . ') - DAYS(' . $date2 . ')'; |
|
| 192 | } |
||
| 193 | |||
| 194 | /** |
||
| 195 | * {@inheritDoc} |
||
| 196 | */ |
||
| 197 | 27 | public function getDateTimeTypeDeclarationSQL(array $fieldDeclaration) : string |
|
| 198 | { |
||
| 199 | 27 | if (isset($fieldDeclaration['version']) && $fieldDeclaration['version'] === true) { |
|
| 200 | 27 | return 'TIMESTAMP(0) WITH DEFAULT'; |
|
| 201 | } |
||
| 202 | |||
| 203 | 27 | return 'TIMESTAMP(0)'; |
|
| 204 | } |
||
| 205 | |||
| 206 | /** |
||
| 207 | * {@inheritDoc} |
||
| 208 | */ |
||
| 209 | 27 | public function getDateTypeDeclarationSQL(array $fieldDeclaration) : string |
|
| 210 | { |
||
| 211 | 27 | return 'DATE'; |
|
| 212 | } |
||
| 213 | |||
| 214 | /** |
||
| 215 | * {@inheritDoc} |
||
| 216 | */ |
||
| 217 | 27 | public function getTimeTypeDeclarationSQL(array $fieldDeclaration) : string |
|
| 221 | |||
| 222 | /** |
||
| 223 | * {@inheritdoc} |
||
| 224 | */ |
||
| 225 | 54 | public function getTruncateTableSQL(string $tableName, bool $cascade = false) : string |
|
| 226 | { |
||
| 227 | 54 | $tableIdentifier = new Identifier($tableName); |
|
| 228 | |||
| 229 | 54 | return 'TRUNCATE ' . $tableIdentifier->getQuotedName($this) . ' IMMEDIATE'; |
|
| 230 | } |
||
| 231 | |||
| 232 | /** |
||
| 233 | * This code fragment is originally from the Zend_Db_Adapter_Db2 class, but has been edited. |
||
| 234 | */ |
||
| 235 | 27 | public function getListTableColumnsSQL(string $table, ?string $database = null) : string |
|
| 236 | { |
||
| 237 | 27 | $table = $this->quoteStringLiteral($table); |
|
| 238 | |||
| 239 | // We do the funky subquery and join syscat.columns.default this crazy way because |
||
| 240 | // as of db2 v10, the column is CLOB(64k) and the distinct operator won't allow a CLOB, |
||
| 241 | // it wants shorter stuff like a varchar. |
||
| 242 | return " |
||
| 243 | SELECT |
||
| 244 | cols.default, |
||
| 245 | subq.* |
||
| 246 | FROM ( |
||
| 247 | SELECT DISTINCT |
||
| 248 | c.tabschema, |
||
| 249 | c.tabname, |
||
| 250 | c.colname, |
||
| 251 | c.colno, |
||
| 252 | c.typename, |
||
| 253 | c.nulls, |
||
| 254 | c.length, |
||
| 255 | c.scale, |
||
| 256 | c.identity, |
||
| 257 | tc.type AS tabconsttype, |
||
| 258 | c.remarks AS comment, |
||
| 259 | k.colseq, |
||
| 260 | CASE |
||
| 261 | WHEN c.generated = 'D' THEN 1 |
||
| 262 | ELSE 0 |
||
| 263 | END AS autoincrement |
||
| 264 | FROM syscat.columns c |
||
| 265 | LEFT JOIN (syscat.keycoluse k JOIN syscat.tabconst tc |
||
| 266 | ON (k.tabschema = tc.tabschema |
||
| 267 | AND k.tabname = tc.tabname |
||
| 268 | AND tc.type = 'P')) |
||
| 269 | ON (c.tabschema = k.tabschema |
||
| 270 | AND c.tabname = k.tabname |
||
| 271 | AND c.colname = k.colname) |
||
| 272 | 27 | WHERE UPPER(c.tabname) = UPPER(" . $table . ') |
|
| 273 | ORDER BY c.colno |
||
| 274 | ) subq |
||
| 275 | JOIN syscat.columns cols |
||
| 276 | ON subq.tabschema = cols.tabschema |
||
| 277 | AND subq.tabname = cols.tabname |
||
| 278 | AND subq.colno = cols.colno |
||
| 279 | ORDER BY subq.colno |
||
| 280 | '; |
||
| 281 | } |
||
| 282 | |||
| 283 | /** |
||
| 284 | * {@inheritDoc} |
||
| 285 | */ |
||
| 286 | public function getListTablesSQL() : string |
||
| 287 | { |
||
| 288 | return "SELECT NAME FROM SYSIBM.SYSTABLES WHERE TYPE = 'T'"; |
||
| 289 | } |
||
| 290 | |||
| 291 | /** |
||
| 292 | * {@inheritDoc} |
||
| 293 | */ |
||
| 294 | public function getListViewsSQL(string $database) : string |
||
| 295 | { |
||
| 296 | return 'SELECT NAME, TEXT FROM SYSIBM.SYSVIEWS'; |
||
| 297 | } |
||
| 298 | |||
| 299 | /** |
||
| 300 | * {@inheritDoc} |
||
| 301 | */ |
||
| 302 | 27 | public function getListTableIndexesSQL(string $table, ?string $currentDatabase = null) : string |
|
| 303 | { |
||
| 304 | 27 | $table = $this->quoteStringLiteral($table); |
|
| 305 | |||
| 306 | return "SELECT idx.INDNAME AS key_name, |
||
| 307 | idxcol.COLNAME AS column_name, |
||
| 308 | CASE |
||
| 309 | WHEN idx.UNIQUERULE = 'P' THEN 1 |
||
| 310 | ELSE 0 |
||
| 311 | END AS primary, |
||
| 312 | CASE |
||
| 313 | WHEN idx.UNIQUERULE = 'D' THEN 1 |
||
| 314 | ELSE 0 |
||
| 315 | END AS non_unique |
||
| 316 | FROM SYSCAT.INDEXES AS idx |
||
| 317 | JOIN SYSCAT.INDEXCOLUSE AS idxcol |
||
| 318 | ON idx.INDSCHEMA = idxcol.INDSCHEMA AND idx.INDNAME = idxcol.INDNAME |
||
| 319 | 27 | WHERE idx.TABNAME = UPPER(" . $table . ') |
|
| 320 | ORDER BY idxcol.COLSEQ ASC'; |
||
| 321 | } |
||
| 322 | |||
| 323 | /** |
||
| 324 | * {@inheritDoc} |
||
| 325 | */ |
||
| 326 | 27 | public function getListTableForeignKeysSQL(string $table, ?string $database = null) : string |
|
| 327 | { |
||
| 328 | 27 | $table = $this->quoteStringLiteral($table); |
|
| 329 | |||
| 330 | return "SELECT fkcol.COLNAME AS local_column, |
||
| 331 | fk.REFTABNAME AS foreign_table, |
||
| 332 | pkcol.COLNAME AS foreign_column, |
||
| 333 | fk.CONSTNAME AS index_name, |
||
| 334 | CASE |
||
| 335 | WHEN fk.UPDATERULE = 'R' THEN 'RESTRICT' |
||
| 336 | ELSE NULL |
||
| 337 | END AS on_update, |
||
| 338 | CASE |
||
| 339 | WHEN fk.DELETERULE = 'C' THEN 'CASCADE' |
||
| 340 | WHEN fk.DELETERULE = 'N' THEN 'SET NULL' |
||
| 341 | WHEN fk.DELETERULE = 'R' THEN 'RESTRICT' |
||
| 342 | ELSE NULL |
||
| 343 | END AS on_delete |
||
| 344 | FROM SYSCAT.REFERENCES AS fk |
||
| 345 | JOIN SYSCAT.KEYCOLUSE AS fkcol |
||
| 346 | ON fk.CONSTNAME = fkcol.CONSTNAME |
||
| 347 | AND fk.TABSCHEMA = fkcol.TABSCHEMA |
||
| 348 | AND fk.TABNAME = fkcol.TABNAME |
||
| 349 | JOIN SYSCAT.KEYCOLUSE AS pkcol |
||
| 350 | ON fk.REFKEYNAME = pkcol.CONSTNAME |
||
| 351 | AND fk.REFTABSCHEMA = pkcol.TABSCHEMA |
||
| 352 | AND fk.REFTABNAME = pkcol.TABNAME |
||
| 353 | 27 | WHERE fk.TABNAME = UPPER(" . $table . ') |
|
| 354 | ORDER BY fkcol.COLSEQ ASC'; |
||
| 355 | } |
||
| 356 | |||
| 357 | /** |
||
| 358 | * {@inheritDoc} |
||
| 359 | */ |
||
| 360 | 27 | public function getCreateViewSQL(string $name, string $sql) : string |
|
| 361 | { |
||
| 362 | 27 | return 'CREATE VIEW ' . $name . ' AS ' . $sql; |
|
| 363 | } |
||
| 364 | |||
| 365 | /** |
||
| 366 | * {@inheritDoc} |
||
| 367 | */ |
||
| 368 | 27 | public function getDropViewSQL(string $name) : string |
|
| 372 | |||
| 373 | /** |
||
| 374 | * {@inheritDoc} |
||
| 375 | */ |
||
| 376 | 27 | public function getCreateDatabaseSQL(string $database) : string |
|
| 377 | { |
||
| 378 | 27 | return 'CREATE DATABASE ' . $database; |
|
| 379 | } |
||
| 380 | |||
| 381 | /** |
||
| 382 | * {@inheritDoc} |
||
| 383 | */ |
||
| 384 | 27 | public function getDropDatabaseSQL(string $database) : string |
|
| 385 | { |
||
| 386 | 27 | return 'DROP DATABASE ' . $database; |
|
| 387 | } |
||
| 388 | |||
| 389 | /** |
||
| 390 | * {@inheritDoc} |
||
| 391 | */ |
||
| 392 | 27 | public function supportsCreateDropDatabase() : bool |
|
| 393 | { |
||
| 394 | 27 | return false; |
|
| 395 | } |
||
| 396 | |||
| 397 | /** |
||
| 398 | * {@inheritDoc} |
||
| 399 | */ |
||
| 400 | 27 | public function supportsReleaseSavepoints() : bool |
|
| 401 | { |
||
| 402 | 27 | return false; |
|
| 403 | } |
||
| 404 | |||
| 405 | /** |
||
| 406 | * {@inheritdoc} |
||
| 407 | */ |
||
| 408 | 351 | public function supportsCommentOnStatement() : bool |
|
| 409 | { |
||
| 410 | 351 | return true; |
|
| 411 | } |
||
| 412 | |||
| 413 | /** |
||
| 414 | * {@inheritDoc} |
||
| 415 | */ |
||
| 416 | 54 | public function getCurrentDateSQL() : string |
|
| 417 | { |
||
| 418 | 54 | return 'CURRENT DATE'; |
|
| 419 | } |
||
| 420 | |||
| 421 | /** |
||
| 422 | * {@inheritDoc} |
||
| 423 | */ |
||
| 424 | 27 | public function getCurrentTimeSQL() : string |
|
| 425 | { |
||
| 426 | 27 | return 'CURRENT TIME'; |
|
| 427 | } |
||
| 428 | |||
| 429 | /** |
||
| 430 | * {@inheritDoc} |
||
| 431 | */ |
||
| 432 | 54 | public function getCurrentTimestampSQL() : string |
|
| 433 | { |
||
| 434 | 54 | return 'CURRENT TIMESTAMP'; |
|
| 435 | } |
||
| 436 | |||
| 437 | /** |
||
| 438 | * {@inheritDoc} |
||
| 439 | */ |
||
| 440 | 27 | public function getIndexDeclarationSQL(string $name, Index $index) : string |
|
| 441 | { |
||
| 442 | // Index declaration in statements like CREATE TABLE is not supported. |
||
| 443 | 27 | throw NotSupported::new(__METHOD__); |
|
| 444 | } |
||
| 445 | |||
| 446 | /** |
||
| 447 | * {@inheritDoc} |
||
| 448 | */ |
||
| 449 | 324 | protected function _getCreateTableSQL(string $tableName, array $columns, array $options = []) : array |
|
| 450 | { |
||
| 451 | 324 | $indexes = []; |
|
| 452 | 324 | if (isset($options['indexes'])) { |
|
| 453 | 324 | $indexes = $options['indexes']; |
|
| 454 | } |
||
| 455 | 324 | $options['indexes'] = []; |
|
| 456 | |||
| 457 | 324 | $sqls = parent::_getCreateTableSQL($tableName, $columns, $options); |
|
| 458 | |||
| 459 | 324 | foreach ($indexes as $definition) { |
|
| 460 | 108 | $sqls[] = $this->getCreateIndexSQL($definition, $tableName); |
|
| 461 | } |
||
| 462 | |||
| 463 | 324 | return $sqls; |
|
| 464 | } |
||
| 465 | |||
| 466 | /** |
||
| 467 | * {@inheritDoc} |
||
| 468 | */ |
||
| 469 | 648 | public function getAlterTableSQL(TableDiff $diff) : array |
|
| 470 | { |
||
| 471 | 648 | $sql = []; |
|
| 472 | 648 | $columnSql = []; |
|
| 473 | 648 | $commentsSQL = []; |
|
| 474 | |||
| 475 | 648 | $queryParts = []; |
|
| 476 | 648 | foreach ($diff->addedColumns as $column) { |
|
| 477 | 108 | if ($this->onSchemaAlterTableAddColumn($column, $diff, $columnSql)) { |
|
| 478 | continue; |
||
| 479 | } |
||
| 480 | |||
| 481 | 108 | $columnDef = $column->toArray(); |
|
| 482 | 108 | $queryPart = 'ADD COLUMN ' . $this->getColumnDeclarationSQL($column->getQuotedName($this), $columnDef); |
|
| 483 | |||
| 484 | // Adding non-nullable columns to a table requires a default value to be specified. |
||
| 485 | 108 | if (! empty($columnDef['notnull']) && |
|
| 486 | 108 | ! isset($columnDef['default']) && |
|
| 487 | 108 | empty($columnDef['autoincrement']) |
|
| 488 | ) { |
||
| 489 | 81 | $queryPart .= ' WITH DEFAULT'; |
|
| 490 | } |
||
| 491 | |||
| 492 | 108 | $queryParts[] = $queryPart; |
|
| 493 | |||
| 494 | 108 | $comment = $this->getColumnComment($column); |
|
| 495 | |||
| 496 | 108 | if ($comment === null || $comment === '') { |
|
| 497 | 81 | continue; |
|
| 498 | } |
||
| 499 | |||
| 500 | 27 | $commentsSQL[] = $this->getCommentOnColumnSQL( |
|
| 501 | 27 | $diff->getName($this)->getQuotedName($this), |
|
| 502 | 27 | $column->getQuotedName($this), |
|
| 503 | $comment |
||
| 504 | ); |
||
| 505 | } |
||
| 506 | |||
| 507 | 648 | foreach ($diff->removedColumns as $column) { |
|
| 508 | 81 | if ($this->onSchemaAlterTableRemoveColumn($column, $diff, $columnSql)) { |
|
| 509 | continue; |
||
| 510 | } |
||
| 511 | |||
| 512 | 81 | $queryParts[] = 'DROP COLUMN ' . $column->getQuotedName($this); |
|
| 513 | } |
||
| 514 | |||
| 515 | 648 | foreach ($diff->changedColumns as $columnDiff) { |
|
| 516 | 459 | if ($this->onSchemaAlterTableChangeColumn($columnDiff, $diff, $columnSql)) { |
|
| 517 | continue; |
||
| 518 | } |
||
| 519 | |||
| 520 | 459 | if ($columnDiff->hasChanged('comment')) { |
|
| 521 | 27 | $commentsSQL[] = $this->getCommentOnColumnSQL( |
|
| 522 | 27 | $diff->getName($this)->getQuotedName($this), |
|
| 523 | 27 | $columnDiff->column->getQuotedName($this), |
|
| 524 | 27 | $this->getColumnComment($columnDiff->column) |
|
| 525 | ); |
||
| 526 | |||
| 527 | 27 | if (count($columnDiff->changedProperties) === 1) { |
|
| 528 | 27 | continue; |
|
| 529 | } |
||
| 530 | } |
||
| 531 | |||
| 532 | 432 | $this->gatherAlterColumnSQL($diff->getName($this), $columnDiff, $sql, $queryParts); |
|
| 533 | } |
||
| 534 | |||
| 535 | 648 | foreach ($diff->renamedColumns as $oldColumnName => $column) { |
|
| 536 | 108 | if ($this->onSchemaAlterTableRenameColumn($oldColumnName, $column, $diff, $columnSql)) { |
|
| 537 | continue; |
||
| 538 | } |
||
| 539 | |||
| 540 | 108 | $oldColumnName = new Identifier($oldColumnName); |
|
| 541 | |||
| 542 | 108 | $queryParts[] = 'RENAME COLUMN ' . $oldColumnName->getQuotedName($this) . |
|
| 543 | 108 | ' TO ' . $column->getQuotedName($this); |
|
| 544 | } |
||
| 545 | |||
| 546 | 648 | $tableSql = []; |
|
| 547 | |||
| 548 | 648 | if (! $this->onSchemaAlterTable($diff, $tableSql)) { |
|
| 549 | 648 | if (count($queryParts) > 0) { |
|
| 550 | 486 | $sql[] = 'ALTER TABLE ' . $diff->getName($this)->getQuotedName($this) . ' ' . implode(' ', $queryParts); |
|
| 551 | } |
||
| 552 | |||
| 553 | // Some table alteration operations require a table reorganization. |
||
| 554 | 648 | if (! empty($diff->removedColumns) || ! empty($diff->changedColumns)) { |
|
| 555 | 459 | $sql[] = "CALL SYSPROC.ADMIN_CMD ('REORG TABLE " . $diff->getName($this)->getQuotedName($this) . "')"; |
|
| 556 | } |
||
| 557 | |||
| 558 | 648 | $sql = array_merge($sql, $commentsSQL); |
|
| 559 | |||
| 560 | 648 | $newName = $diff->getNewName(); |
|
| 561 | |||
| 562 | 648 | if ($newName !== null) { |
|
| 563 | 54 | $sql[] = sprintf( |
|
| 564 | 4 | 'RENAME TABLE %s TO %s', |
|
| 565 | 54 | $diff->getName($this)->getQuotedName($this), |
|
| 566 | 54 | $newName->getQuotedName($this) |
|
| 567 | ); |
||
| 568 | } |
||
| 569 | |||
| 570 | 648 | $sql = array_merge( |
|
| 571 | 648 | $this->getPreAlterTableIndexForeignKeySQL($diff), |
|
| 572 | 648 | $sql, |
|
| 573 | 648 | $this->getPostAlterTableIndexForeignKeySQL($diff) |
|
| 574 | ); |
||
| 575 | } |
||
| 576 | |||
| 577 | 648 | return array_merge($sql, $tableSql, $columnSql); |
|
| 578 | } |
||
| 579 | |||
| 580 | /** |
||
| 581 | * Gathers the table alteration SQL for a given column diff. |
||
| 582 | * |
||
| 583 | * @param Identifier $table The table to gather the SQL for. |
||
| 584 | * @param ColumnDiff $columnDiff The column diff to evaluate. |
||
| 585 | * @param string[] $sql The sequence of table alteration statements to fill. |
||
| 586 | * @param mixed[] $queryParts The sequence of column alteration clauses to fill. |
||
| 587 | */ |
||
| 588 | 432 | private function gatherAlterColumnSQL(Identifier $table, ColumnDiff $columnDiff, array &$sql, array &$queryParts) : void |
|
| 589 | { |
||
| 590 | 432 | $alterColumnClauses = $this->getAlterColumnClausesSQL($columnDiff); |
|
| 591 | |||
| 592 | 432 | if (empty($alterColumnClauses)) { |
|
| 593 | 54 | return; |
|
| 594 | } |
||
| 595 | |||
| 596 | // If we have a single column alteration, we can append the clause to the main query. |
||
| 597 | 378 | if (count($alterColumnClauses) === 1) { |
|
| 598 | 351 | $queryParts[] = current($alterColumnClauses); |
|
| 599 | |||
| 600 | 351 | return; |
|
| 601 | } |
||
| 602 | |||
| 603 | // We have multiple alterations for the same column, |
||
| 604 | // so we need to trigger a complete ALTER TABLE statement |
||
| 605 | // for each ALTER COLUMN clause. |
||
| 606 | 27 | foreach ($alterColumnClauses as $alterColumnClause) { |
|
| 607 | 27 | $sql[] = 'ALTER TABLE ' . $table->getQuotedName($this) . ' ' . $alterColumnClause; |
|
| 608 | } |
||
| 609 | 27 | } |
|
| 610 | |||
| 611 | /** |
||
| 612 | * Returns the ALTER COLUMN SQL clauses for altering a column described by the given column diff. |
||
| 613 | * |
||
| 614 | * @param ColumnDiff $columnDiff The column diff to evaluate. |
||
| 615 | * |
||
| 616 | * @return string[] |
||
| 617 | */ |
||
| 618 | 432 | private function getAlterColumnClausesSQL(ColumnDiff $columnDiff) : array |
|
| 619 | { |
||
| 620 | 432 | $column = $columnDiff->column->toArray(); |
|
| 621 | |||
| 622 | 432 | $alterClause = 'ALTER COLUMN ' . $columnDiff->column->getQuotedName($this); |
|
| 623 | |||
| 624 | 432 | if ($column['columnDefinition']) { |
|
| 625 | 27 | return [$alterClause . ' ' . $column['columnDefinition']]; |
|
| 626 | } |
||
| 627 | |||
| 628 | 405 | $clauses = []; |
|
| 629 | |||
| 630 | 405 | if ($columnDiff->hasChanged('type') || |
|
| 631 | 399 | $columnDiff->hasChanged('length') || |
|
| 632 | 397 | $columnDiff->hasChanged('precision') || |
|
| 633 | 395 | $columnDiff->hasChanged('scale') || |
|
| 634 | 405 | $columnDiff->hasChanged('fixed') |
|
| 635 | ) { |
||
| 636 | 216 | $clauses[] = $alterClause . ' SET DATA TYPE ' . $column['type']->getSQLDeclaration($column, $this); |
|
| 637 | } |
||
| 638 | |||
| 639 | 405 | if ($columnDiff->hasChanged('notnull')) { |
|
| 640 | 108 | $clauses[] = $column['notnull'] ? $alterClause . ' SET NOT NULL' : $alterClause . ' DROP NOT NULL'; |
|
| 641 | } |
||
| 642 | |||
| 643 | 405 | if ($columnDiff->hasChanged('default')) { |
|
| 644 | 108 | if (isset($column['default'])) { |
|
| 645 | 81 | $defaultClause = $this->getDefaultValueDeclarationSQL($column); |
|
| 646 | |||
| 647 | 81 | if ($defaultClause) { |
|
| 648 | 81 | $clauses[] = $alterClause . ' SET' . $defaultClause; |
|
| 649 | } |
||
| 650 | } else { |
||
| 651 | 27 | $clauses[] = $alterClause . ' DROP DEFAULT'; |
|
| 652 | } |
||
| 653 | } |
||
| 654 | |||
| 655 | 405 | return $clauses; |
|
| 656 | } |
||
| 657 | |||
| 658 | /** |
||
| 659 | * {@inheritDoc} |
||
| 660 | */ |
||
| 661 | 648 | protected function getPreAlterTableIndexForeignKeySQL(TableDiff $diff) : array |
|
| 662 | { |
||
| 663 | 648 | $sql = []; |
|
| 664 | 648 | $table = $diff->getName($this)->getQuotedName($this); |
|
| 665 | |||
| 666 | 648 | foreach ($diff->removedIndexes as $remKey => $remIndex) { |
|
| 667 | foreach ($diff->addedIndexes as $addKey => $addIndex) { |
||
| 668 | if ($remIndex->getColumns() === $addIndex->getColumns()) { |
||
| 669 | if ($remIndex->isPrimary()) { |
||
| 670 | $sql[] = 'ALTER TABLE ' . $table . ' DROP PRIMARY KEY'; |
||
| 671 | } elseif ($remIndex->isUnique()) { |
||
| 672 | $sql[] = 'ALTER TABLE ' . $table . ' DROP UNIQUE ' . $remIndex->getQuotedName($this); |
||
| 673 | } else { |
||
| 674 | $sql[] = $this->getDropIndexSQL($remIndex, $table); |
||
| 675 | } |
||
| 676 | |||
| 677 | $sql[] = $this->getCreateIndexSQL($addIndex, $table); |
||
| 678 | |||
| 679 | unset($diff->removedIndexes[$remKey], $diff->addedIndexes[$addKey]); |
||
| 680 | |||
| 681 | break; |
||
| 682 | } |
||
| 683 | } |
||
| 684 | } |
||
| 685 | |||
| 686 | 648 | $sql = array_merge($sql, parent::getPreAlterTableIndexForeignKeySQL($diff)); |
|
| 687 | |||
| 688 | 648 | return $sql; |
|
| 689 | } |
||
| 690 | |||
| 691 | /** |
||
| 692 | * {@inheritdoc} |
||
| 693 | */ |
||
| 694 | 135 | protected function getRenameIndexSQL(string $oldIndexName, Index $index, string $tableName) : array |
|
| 695 | { |
||
| 696 | 135 | if (strpos($tableName, '.') !== false) { |
|
| 697 | 54 | [$schema] = explode('.', $tableName); |
|
| 698 | 54 | $oldIndexName = $schema . '.' . $oldIndexName; |
|
| 699 | } |
||
| 700 | |||
| 701 | 135 | return ['RENAME INDEX ' . $oldIndexName . ' TO ' . $index->getQuotedName($this)]; |
|
| 702 | } |
||
| 703 | |||
| 704 | /** |
||
| 705 | * {@inheritDoc} |
||
| 706 | */ |
||
| 707 | 594 | public function getDefaultValueDeclarationSQL(array $field) : string |
|
| 708 | { |
||
| 709 | 594 | if (! empty($field['autoincrement'])) { |
|
| 710 | 54 | return ''; |
|
| 711 | } |
||
| 712 | |||
| 713 | 567 | if (isset($field['version']) && $field['version']) { |
|
| 714 | if ((string) $field['type'] !== 'DateTime') { |
||
| 715 | $field['default'] = '1'; |
||
| 716 | } |
||
| 717 | } |
||
| 718 | |||
| 719 | 567 | return parent::getDefaultValueDeclarationSQL($field); |
|
| 720 | } |
||
| 721 | |||
| 722 | /** |
||
| 723 | * {@inheritDoc} |
||
| 724 | */ |
||
| 725 | public function getEmptyIdentityInsertSQL(string $tableName, string $identifierColumnName) : string |
||
| 726 | { |
||
| 727 | return 'INSERT INTO ' . $tableName . ' (' . $identifierColumnName . ') VALUES (DEFAULT)'; |
||
| 728 | } |
||
| 729 | |||
| 730 | /** |
||
| 731 | * {@inheritDoc} |
||
| 732 | */ |
||
| 733 | 27 | public function getCreateTemporaryTableSnippetSQL() : string |
|
| 734 | { |
||
| 735 | 27 | return 'DECLARE GLOBAL TEMPORARY TABLE'; |
|
| 736 | } |
||
| 737 | |||
| 738 | /** |
||
| 739 | * {@inheritDoc} |
||
| 740 | */ |
||
| 741 | public function getTemporaryTableName(string $tableName) : string |
||
| 742 | { |
||
| 743 | return 'SESSION.' . $tableName; |
||
| 744 | } |
||
| 745 | |||
| 746 | /** |
||
| 747 | * {@inheritDoc} |
||
| 748 | */ |
||
| 749 | 54 | protected function doModifyLimitQuery(string $query, ?int $limit, int $offset) : string |
|
| 750 | { |
||
| 751 | 54 | $where = []; |
|
| 752 | |||
| 753 | 54 | if ($offset > 0) { |
|
| 754 | 27 | $where[] = sprintf('db22.DC_ROWNUM >= %d', $offset + 1); |
|
| 755 | } |
||
| 756 | |||
| 757 | 54 | if ($limit !== null) { |
|
| 758 | 27 | $where[] = sprintf('db22.DC_ROWNUM <= %d', $offset + $limit); |
|
| 759 | } |
||
| 760 | |||
| 761 | 54 | if (empty($where)) { |
|
| 762 | 54 | return $query; |
|
| 763 | } |
||
| 764 | |||
| 765 | // Todo OVER() needs ORDER BY data! |
||
| 766 | 27 | return sprintf( |
|
| 767 | 2 | 'SELECT db22.* FROM (SELECT db21.*, ROW_NUMBER() OVER() AS DC_ROWNUM FROM (%s) db21) db22 WHERE %s', |
|
| 768 | 27 | $query, |
|
| 769 | 27 | implode(' AND ', $where) |
|
| 770 | ); |
||
| 771 | } |
||
| 772 | |||
| 773 | /** |
||
| 774 | * {@inheritDoc} |
||
| 775 | */ |
||
| 776 | 27 | public function getLocateExpression(string $string, string $substring, ?string $start = null) : string |
|
| 777 | { |
||
| 778 | 27 | if ($start === null) { |
|
| 779 | 27 | return sprintf('LOCATE(%s, %s)', $substring, $string); |
|
| 780 | } |
||
| 781 | |||
| 782 | 27 | return sprintf('LOCATE(%s, %s, %s)', $substring, $string, $start); |
|
| 783 | } |
||
| 784 | |||
| 785 | /** |
||
| 786 | * {@inheritDoc} |
||
| 787 | */ |
||
| 788 | 27 | public function getSubstringExpression(string $string, string $start, ?string $length = null) : string |
|
| 789 | { |
||
| 790 | 27 | if ($length === null) { |
|
| 791 | 27 | return sprintf('SUBSTR(%s, %s)', $string, $start); |
|
| 792 | } |
||
| 793 | |||
| 794 | 27 | return sprintf('SUBSTR(%s, %s, %s)', $string, $start, $length); |
|
| 795 | } |
||
| 796 | |||
| 797 | /** |
||
| 798 | * {@inheritDoc} |
||
| 799 | */ |
||
| 800 | public function getCurrentDatabaseExpression() : string |
||
| 801 | { |
||
| 802 | return 'CURRENT_USER'; |
||
| 803 | } |
||
| 804 | |||
| 805 | /** |
||
| 806 | * {@inheritDoc} |
||
| 807 | */ |
||
| 808 | 27 | public function supportsIdentityColumns() : bool |
|
| 809 | { |
||
| 810 | 27 | return true; |
|
| 811 | } |
||
| 812 | |||
| 813 | /** |
||
| 814 | * {@inheritDoc} |
||
| 815 | */ |
||
| 816 | 27 | public function prefersIdentityColumns() : bool |
|
| 817 | { |
||
| 818 | 27 | return true; |
|
| 819 | } |
||
| 820 | |||
| 821 | /** |
||
| 822 | * {@inheritDoc} |
||
| 823 | * |
||
| 824 | * DB2 returns all column names in SQL result sets in uppercase. |
||
| 825 | */ |
||
| 826 | 27 | public function getSQLResultCasing(string $column) : string |
|
| 827 | { |
||
| 828 | 27 | return strtoupper($column); |
|
| 829 | } |
||
| 830 | |||
| 831 | /** |
||
| 832 | * {@inheritDoc} |
||
| 833 | */ |
||
| 834 | 27 | public function getForUpdateSQL() : string |
|
| 838 | |||
| 839 | /** |
||
| 840 | * {@inheritDoc} |
||
| 841 | */ |
||
| 842 | public function getDummySelectSQL(string $expression = '1') : string |
||
| 843 | { |
||
| 844 | return sprintf('SELECT %s FROM sysibm.sysdummy1', $expression); |
||
| 845 | } |
||
| 846 | |||
| 847 | /** |
||
| 848 | * {@inheritDoc} |
||
| 849 | * |
||
| 850 | * DB2 supports savepoints, but they work semantically different than on other vendor platforms. |
||
| 851 | * |
||
| 852 | * TODO: We have to investigate how to get DB2 up and running with savepoints. |
||
| 853 | */ |
||
| 854 | 27 | public function supportsSavepoints() : bool |
|
| 855 | { |
||
| 856 | 27 | return false; |
|
| 857 | } |
||
| 858 | |||
| 859 | /** |
||
| 860 | * {@inheritDoc} |
||
| 861 | */ |
||
| 862 | 1404 | protected function getReservedKeywordsClass() : string |
|
| 863 | { |
||
| 864 | 1404 | return Keywords\DB2Keywords::class; |
|
| 865 | } |
||
| 866 | |||
| 867 | public function getListTableCommentsSQL(string $table) : string |
||
| 868 | { |
||
| 869 | return sprintf( |
||
| 870 | <<<'SQL' |
||
| 871 | SELECT REMARKS |
||
| 872 | FROM SYSIBM.SYSTABLES |
||
| 873 | WHERE NAME = UPPER( %s ) |
||
| 874 | SQL |
||
| 875 | , |
||
| 876 | $this->quoteStringLiteral($table) |
||
| 877 | ); |
||
| 878 | } |
||
| 879 | } |
||
| 880 |
Loading history...
Our type inference engine has found an assignment to a property that is incompatible with the declared type of that property.
Either this assignment is in error or the assigned type should be added to the documentation/type hint for that property..