sminnee /
silverstripe-framework
| Total Complexity | 168 |
| Total Lines | 1279 |
| Duplicated Lines | 0 % |
| Changes | 0 | ||
Complex classes like DataObjectSchema 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.
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 DataObjectSchema, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
||
| 21 | class DataObjectSchema |
||
| 22 | { |
||
| 23 | use Injectable; |
||
| 24 | use Configurable; |
||
| 25 | |||
| 26 | /** |
||
| 27 | * Default separate for table namespaces. Can be set to any string for |
||
| 28 | * databases that do not support some characters. |
||
| 29 | * |
||
| 30 | * @config |
||
| 31 | * @var string |
||
| 32 | */ |
||
| 33 | private static $table_namespace_separator = '_'; |
||
|
introduced
by
|
|||
| 34 | |||
| 35 | /** |
||
| 36 | * Cache of database fields |
||
| 37 | * |
||
| 38 | * @var array |
||
| 39 | */ |
||
| 40 | protected $databaseFields = []; |
||
| 41 | |||
| 42 | /** |
||
| 43 | * Cache of database indexes |
||
| 44 | * |
||
| 45 | * @var array |
||
| 46 | */ |
||
| 47 | protected $databaseIndexes = []; |
||
| 48 | |||
| 49 | /** |
||
| 50 | * Fields that should be indexed, by class name |
||
| 51 | * |
||
| 52 | * @var array |
||
| 53 | */ |
||
| 54 | protected $defaultDatabaseIndexes = []; |
||
| 55 | |||
| 56 | /** |
||
| 57 | * Cache of composite database field |
||
| 58 | * |
||
| 59 | * @var array |
||
| 60 | */ |
||
| 61 | protected $compositeFields = []; |
||
| 62 | |||
| 63 | /** |
||
| 64 | * Cache of table names |
||
| 65 | * |
||
| 66 | * @var array |
||
| 67 | */ |
||
| 68 | protected $tableNames = []; |
||
| 69 | |||
| 70 | /** |
||
| 71 | * Clear cached table names |
||
| 72 | */ |
||
| 73 | public function reset() |
||
| 74 | { |
||
| 75 | $this->tableNames = []; |
||
| 76 | $this->databaseFields = []; |
||
| 77 | $this->databaseIndexes = []; |
||
| 78 | $this->defaultDatabaseIndexes = []; |
||
| 79 | $this->compositeFields = []; |
||
| 80 | } |
||
| 81 | |||
| 82 | /** |
||
| 83 | * Get all table names |
||
| 84 | * |
||
| 85 | * @return array |
||
| 86 | */ |
||
| 87 | public function getTableNames() |
||
| 88 | { |
||
| 89 | $this->cacheTableNames(); |
||
| 90 | return $this->tableNames; |
||
| 91 | } |
||
| 92 | |||
| 93 | /** |
||
| 94 | * Given a DataObject class and a field on that class, determine the appropriate SQL for |
||
| 95 | * selecting / filtering on in a SQL string. Note that $class must be a valid class, not an |
||
| 96 | * arbitrary table. |
||
| 97 | * |
||
| 98 | * The result will be a standard ANSI-sql quoted string in "Table"."Column" format. |
||
| 99 | * |
||
| 100 | * @param string $class Class name (not a table). |
||
| 101 | * @param string $field Name of field that belongs to this class (or a parent class) |
||
| 102 | * @param string $tablePrefix Optional prefix for table (alias) |
||
| 103 | * |
||
| 104 | * @return string The SQL identifier string for the corresponding column for this field |
||
| 105 | */ |
||
| 106 | public function sqlColumnForField($class, $field, $tablePrefix = null) |
||
| 107 | { |
||
| 108 | $table = $this->tableForField($class, $field); |
||
| 109 | if (!$table) { |
||
| 110 | throw new InvalidArgumentException("\"{$field}\" is not a field on class \"{$class}\""); |
||
| 111 | } |
||
| 112 | return "\"{$tablePrefix}{$table}\".\"{$field}\""; |
||
| 113 | } |
||
| 114 | |||
| 115 | /** |
||
| 116 | * Get table name for the given class. |
||
| 117 | * |
||
| 118 | * Note that this does not confirm a table actually exists (or should exist), but returns |
||
| 119 | * the name that would be used if this table did exist. |
||
| 120 | * |
||
| 121 | * @param string $class |
||
| 122 | * |
||
| 123 | * @return string Returns the table name, or null if there is no table |
||
| 124 | */ |
||
| 125 | public function tableName($class) |
||
| 126 | { |
||
| 127 | $tables = $this->getTableNames(); |
||
| 128 | $class = ClassInfo::class_name($class); |
||
| 129 | if (isset($tables[$class])) { |
||
| 130 | return $tables[$class]; |
||
| 131 | } |
||
| 132 | return null; |
||
| 133 | } |
||
| 134 | |||
| 135 | /** |
||
| 136 | * Returns the root class (the first to extend from DataObject) for the |
||
| 137 | * passed class. |
||
| 138 | * |
||
| 139 | * @param string|object $class |
||
| 140 | * |
||
| 141 | * @return string |
||
| 142 | * @throws InvalidArgumentException |
||
| 143 | */ |
||
| 144 | public function baseDataClass($class) |
||
| 145 | { |
||
| 146 | $current = $class; |
||
| 147 | while ($next = get_parent_class($current)) { |
||
| 148 | if ($next === DataObject::class) { |
||
| 149 | // Only use ClassInfo::class_name() to format the class if we've not used get_parent_class() |
||
| 150 | return ($current === $class) ? ClassInfo::class_name($current) : $current; |
||
| 151 | } |
||
| 152 | $current = $next; |
||
| 153 | } |
||
| 154 | throw new InvalidArgumentException("$class is not a subclass of DataObject"); |
||
| 155 | } |
||
| 156 | |||
| 157 | /** |
||
| 158 | * Get the base table |
||
| 159 | * |
||
| 160 | * @param string|object $class |
||
| 161 | * |
||
| 162 | * @return string |
||
| 163 | */ |
||
| 164 | public function baseDataTable($class) |
||
| 165 | { |
||
| 166 | return $this->tableName($this->baseDataClass($class)); |
||
| 167 | } |
||
| 168 | |||
| 169 | /** |
||
| 170 | * fieldSpec should exclude virtual fields (such as composite fields), and only include fields with a db column. |
||
| 171 | */ |
||
| 172 | const DB_ONLY = 1; |
||
| 173 | |||
| 174 | /** |
||
| 175 | * fieldSpec should only return fields that belong to this table, and not any ancestors |
||
| 176 | */ |
||
| 177 | const UNINHERITED = 2; |
||
| 178 | |||
| 179 | /** |
||
| 180 | * fieldSpec should prefix all field specifications with the class name in RecordClass.Column(spec) format. |
||
| 181 | */ |
||
| 182 | const INCLUDE_CLASS = 4; |
||
| 183 | |||
| 184 | /** |
||
| 185 | * Get all DB field specifications for a class, including ancestors and composite fields. |
||
| 186 | * |
||
| 187 | * @param string|DataObject $classOrInstance |
||
| 188 | * @param int $options Bitmask of options |
||
| 189 | * - UNINHERITED Limit to only this table |
||
| 190 | * - DB_ONLY Exclude virtual fields (such as composite fields), and only include fields with a db column. |
||
| 191 | * - INCLUDE_CLASS Prefix the field specification with the class name in RecordClass.Column(spec) format. |
||
| 192 | * |
||
| 193 | * @return array List of fields, where the key is the field name and the value is the field specification. |
||
| 194 | */ |
||
| 195 | public function fieldSpecs($classOrInstance, $options = 0) |
||
| 196 | { |
||
| 197 | $class = ClassInfo::class_name($classOrInstance); |
||
| 198 | |||
| 199 | // Validate options |
||
| 200 | if (!is_int($options)) { |
||
| 201 | throw new InvalidArgumentException("Invalid options " . var_export($options, true)); |
||
| 202 | } |
||
| 203 | $uninherited = ($options & self::UNINHERITED) === self::UNINHERITED; |
||
| 204 | $dbOnly = ($options & self::DB_ONLY) === self::DB_ONLY; |
||
| 205 | $includeClass = ($options & self::INCLUDE_CLASS) === self::INCLUDE_CLASS; |
||
| 206 | |||
| 207 | // Walk class hierarchy |
||
| 208 | $db = []; |
||
| 209 | $classes = $uninherited ? [$class] : ClassInfo::ancestry($class); |
||
| 210 | foreach ($classes as $tableClass) { |
||
| 211 | // Skip irrelevant parent classes |
||
| 212 | if (!is_subclass_of($tableClass, DataObject::class)) { |
||
| 213 | continue; |
||
| 214 | } |
||
| 215 | |||
| 216 | // Find all fields on this class |
||
| 217 | $fields = $this->databaseFields($tableClass, false); |
||
| 218 | // Merge with composite fields |
||
| 219 | if (!$dbOnly) { |
||
| 220 | $compositeFields = $this->compositeFields($tableClass, false); |
||
| 221 | $fields = array_merge($fields, $compositeFields); |
||
| 222 | } |
||
| 223 | |||
| 224 | // Record specification |
||
| 225 | foreach ($fields as $name => $specification) { |
||
| 226 | $prefix = $includeClass ? "{$tableClass}." : ""; |
||
| 227 | $db[$name] = $prefix . $specification; |
||
| 228 | } |
||
| 229 | } |
||
| 230 | return $db; |
||
| 231 | } |
||
| 232 | |||
| 233 | |||
| 234 | /** |
||
| 235 | * Get specifications for a single class field |
||
| 236 | * |
||
| 237 | * @param string|DataObject $classOrInstance Name or instance of class |
||
| 238 | * @param string $fieldName Name of field to retrieve |
||
| 239 | * @param int $options Bitmask of options |
||
| 240 | * - UNINHERITED Limit to only this table |
||
| 241 | * - DB_ONLY Exclude virtual fields (such as composite fields), and only include fields with a db column. |
||
| 242 | * - INCLUDE_CLASS Prefix the field specification with the class name in RecordClass.Column(spec) format. |
||
| 243 | * |
||
| 244 | * @return string|null Field will be a string in FieldClass(args) format, or |
||
| 245 | * RecordClass.FieldClass(args) format if using INCLUDE_CLASS. Will be null if no field is found. |
||
| 246 | */ |
||
| 247 | public function fieldSpec($classOrInstance, $fieldName, $options = 0) |
||
| 248 | { |
||
| 249 | $specs = $this->fieldSpecs($classOrInstance, $options); |
||
| 250 | return isset($specs[$fieldName]) ? $specs[$fieldName] : null; |
||
| 251 | } |
||
| 252 | |||
| 253 | /** |
||
| 254 | * Find the class for the given table |
||
| 255 | * |
||
| 256 | * @param string $table |
||
| 257 | * |
||
| 258 | * @return string|null The FQN of the class, or null if not found |
||
| 259 | */ |
||
| 260 | public function tableClass($table) |
||
| 261 | { |
||
| 262 | $tables = $this->getTableNames(); |
||
| 263 | $class = array_search($table, $tables, true); |
||
| 264 | if ($class) { |
||
| 265 | return $class; |
||
| 266 | } |
||
| 267 | |||
| 268 | // If there is no class for this table, strip table modifiers (e.g. _Live / _Versions) |
||
| 269 | // from the end and re-attempt a search. |
||
| 270 | if (preg_match('/^(?<class>.+)(_[^_]+)$/i', $table, $matches)) { |
||
| 271 | $table = $matches['class']; |
||
| 272 | $class = array_search($table, $tables, true); |
||
| 273 | if ($class) { |
||
| 274 | return $class; |
||
| 275 | } |
||
| 276 | } |
||
| 277 | return null; |
||
| 278 | } |
||
| 279 | |||
| 280 | /** |
||
| 281 | * Cache all table names if necessary |
||
| 282 | */ |
||
| 283 | protected function cacheTableNames() |
||
| 284 | { |
||
| 285 | if ($this->tableNames) { |
||
| 286 | return; |
||
| 287 | } |
||
| 288 | $this->tableNames = []; |
||
| 289 | foreach (ClassInfo::subclassesFor(DataObject::class) as $class) { |
||
| 290 | if ($class === DataObject::class) { |
||
| 291 | continue; |
||
| 292 | } |
||
| 293 | $table = $this->buildTableName($class); |
||
| 294 | |||
| 295 | // Check for conflicts |
||
| 296 | $conflict = array_search($table, $this->tableNames, true); |
||
| 297 | if ($conflict) { |
||
| 298 | throw new LogicException( |
||
| 299 | "Multiple classes (\"{$class}\", \"{$conflict}\") map to the same table: \"{$table}\"" |
||
| 300 | ); |
||
| 301 | } |
||
| 302 | $this->tableNames[$class] = $table; |
||
| 303 | } |
||
| 304 | } |
||
| 305 | |||
| 306 | /** |
||
| 307 | * Generate table name for a class. |
||
| 308 | * |
||
| 309 | * Note: some DB schema have a hard limit on table name length. This is not enforced by this method. |
||
| 310 | * See dev/build errors for details in case of table name violation. |
||
| 311 | * |
||
| 312 | * @param string $class |
||
| 313 | * |
||
| 314 | * @return string |
||
| 315 | */ |
||
| 316 | protected function buildTableName($class) |
||
| 317 | { |
||
| 318 | $table = Config::inst()->get($class, 'table_name', Config::UNINHERITED); |
||
| 319 | |||
| 320 | // Generate default table name |
||
| 321 | if ($table) { |
||
| 322 | return $table; |
||
| 323 | } |
||
| 324 | |||
| 325 | if (strpos($class, '\\') === false) { |
||
| 326 | return $class; |
||
| 327 | } |
||
| 328 | |||
| 329 | $separator = DataObjectSchema::config()->uninherited('table_namespace_separator'); |
||
| 330 | $table = str_replace('\\', $separator, trim($class, '\\')); |
||
| 331 | |||
| 332 | if (!ClassInfo::classImplements($class, TestOnly::class) && $this->classHasTable($class)) { |
||
| 333 | DBSchemaManager::showTableNameWarning($table, $class); |
||
| 334 | } |
||
| 335 | |||
| 336 | return $table; |
||
| 337 | } |
||
| 338 | |||
| 339 | /** |
||
| 340 | * Return the complete map of fields to specification on this object, including fixed_fields. |
||
| 341 | * "ID" will be included on every table. |
||
| 342 | * |
||
| 343 | * @param string $class Class name to query from |
||
| 344 | * @param bool $aggregated Include fields in entire hierarchy, rather than just on this table |
||
| 345 | * |
||
| 346 | * @return array Map of fieldname to specification, similiar to {@link DataObject::$db}. |
||
| 347 | */ |
||
| 348 | public function databaseFields($class, $aggregated = true) |
||
| 349 | { |
||
| 350 | $class = ClassInfo::class_name($class); |
||
| 351 | if ($class === DataObject::class) { |
||
| 352 | return []; |
||
| 353 | } |
||
| 354 | $this->cacheDatabaseFields($class); |
||
| 355 | $fields = $this->databaseFields[$class]; |
||
| 356 | |||
| 357 | if (!$aggregated) { |
||
| 358 | return $fields; |
||
| 359 | } |
||
| 360 | |||
| 361 | // Recursively merge |
||
| 362 | $parentFields = $this->databaseFields(get_parent_class($class)); |
||
| 363 | return array_merge($fields, array_diff_key($parentFields, $fields)); |
||
| 364 | } |
||
| 365 | |||
| 366 | /** |
||
| 367 | * Gets a single database field. |
||
| 368 | * |
||
| 369 | * @param string $class Class name to query from |
||
| 370 | * @param string $field Field name |
||
| 371 | * @param bool $aggregated Include fields in entire hierarchy, rather than just on this table |
||
| 372 | * |
||
| 373 | * @return string|null Field specification, or null if not a field |
||
| 374 | */ |
||
| 375 | public function databaseField($class, $field, $aggregated = true) |
||
| 376 | { |
||
| 377 | $fields = $this->databaseFields($class, $aggregated); |
||
| 378 | return isset($fields[$field]) ? $fields[$field] : null; |
||
| 379 | } |
||
| 380 | |||
| 381 | /** |
||
| 382 | * @param string $class |
||
| 383 | * @param bool $aggregated |
||
| 384 | * |
||
| 385 | * @return array |
||
| 386 | */ |
||
| 387 | public function databaseIndexes($class, $aggregated = true) |
||
| 399 | } |
||
| 400 | |||
| 401 | /** |
||
| 402 | * Check if the given class has a table |
||
| 403 | * |
||
| 404 | * @param string $class |
||
| 405 | * |
||
| 406 | * @return bool |
||
| 407 | */ |
||
| 408 | public function classHasTable($class) |
||
| 409 | { |
||
| 410 | if (!is_subclass_of($class, DataObject::class)) { |
||
| 411 | return false; |
||
| 412 | } |
||
| 413 | |||
| 414 | $fields = $this->databaseFields($class, false); |
||
| 415 | return !empty($fields); |
||
| 416 | } |
||
| 417 | |||
| 418 | /** |
||
| 419 | * Returns a list of all the composite if the given db field on the class is a composite field. |
||
| 420 | * Will check all applicable ancestor classes and aggregate results. |
||
| 421 | * |
||
| 422 | * Can be called directly on an object. E.g. Member::composite_fields(), or Member::composite_fields(null, true) |
||
| 423 | * to aggregate. |
||
| 424 | * |
||
| 425 | * Includes composite has_one (Polymorphic) fields |
||
| 426 | * |
||
| 427 | * @param string $class Name of class to check |
||
| 428 | * @param bool $aggregated Include fields in entire hierarchy, rather than just on this table |
||
| 429 | * |
||
| 430 | * @return array List of composite fields and their class spec |
||
| 431 | */ |
||
| 432 | public function compositeFields($class, $aggregated = true) |
||
| 433 | { |
||
| 434 | $class = ClassInfo::class_name($class); |
||
| 435 | if ($class === DataObject::class) { |
||
| 436 | return []; |
||
| 437 | } |
||
| 438 | $this->cacheDatabaseFields($class); |
||
| 439 | |||
| 440 | // Get fields for this class |
||
| 441 | $compositeFields = $this->compositeFields[$class]; |
||
| 442 | if (!$aggregated) { |
||
| 443 | return $compositeFields; |
||
| 444 | } |
||
| 445 | |||
| 446 | // Recursively merge |
||
| 447 | $parentFields = $this->compositeFields(get_parent_class($class)); |
||
| 448 | return array_merge($compositeFields, array_diff_key($parentFields, $compositeFields)); |
||
| 449 | } |
||
| 450 | |||
| 451 | /** |
||
| 452 | * Get a composite field for a class |
||
| 453 | * |
||
| 454 | * @param string $class Class name to query from |
||
| 455 | * @param string $field Field name |
||
| 456 | * @param bool $aggregated Include fields in entire hierarchy, rather than just on this table |
||
| 457 | * |
||
| 458 | * @return string|null Field specification, or null if not a field |
||
| 459 | */ |
||
| 460 | public function compositeField($class, $field, $aggregated = true) |
||
| 461 | { |
||
| 462 | $fields = $this->compositeFields($class, $aggregated); |
||
| 463 | return isset($fields[$field]) ? $fields[$field] : null; |
||
| 464 | } |
||
| 465 | |||
| 466 | /** |
||
| 467 | * Cache all database and composite fields for the given class. |
||
| 468 | * Will do nothing if already cached |
||
| 469 | * |
||
| 470 | * @param string $class Class name to cache |
||
| 471 | */ |
||
| 472 | protected function cacheDatabaseFields($class) |
||
| 473 | { |
||
| 474 | // Skip if already cached |
||
| 475 | if (isset($this->databaseFields[$class]) && isset($this->compositeFields[$class])) { |
||
| 476 | return; |
||
| 477 | } |
||
| 478 | $compositeFields = array(); |
||
| 479 | $dbFields = array(); |
||
| 480 | |||
| 481 | // Ensure fixed fields appear at the start |
||
| 482 | $fixedFields = DataObject::config()->uninherited('fixed_fields'); |
||
| 483 | if (get_parent_class($class) === DataObject::class) { |
||
| 484 | // Merge fixed with ClassName spec and custom db fields |
||
| 485 | $dbFields = $fixedFields; |
||
| 486 | } else { |
||
| 487 | $dbFields['ID'] = $fixedFields['ID']; |
||
| 488 | } |
||
| 489 | |||
| 490 | // Check each DB value as either a field or composite field |
||
| 491 | $db = Config::inst()->get($class, 'db', Config::UNINHERITED) ?: array(); |
||
| 492 | foreach ($db as $fieldName => $fieldSpec) { |
||
| 493 | $fieldClass = strtok($fieldSpec, '('); |
||
| 494 | if (singleton($fieldClass) instanceof DBComposite) { |
||
| 495 | $compositeFields[$fieldName] = $fieldSpec; |
||
| 496 | } else { |
||
| 497 | $dbFields[$fieldName] = $fieldSpec; |
||
| 498 | } |
||
| 499 | } |
||
| 500 | |||
| 501 | // Add in all has_ones |
||
| 502 | $hasOne = Config::inst()->get($class, 'has_one', Config::UNINHERITED) ?: array(); |
||
| 503 | foreach ($hasOne as $fieldName => $hasOneClass) { |
||
| 504 | if ($hasOneClass === DataObject::class) { |
||
| 505 | $compositeFields[$fieldName] = 'PolymorphicForeignKey'; |
||
| 506 | } else { |
||
| 507 | $dbFields["{$fieldName}ID"] = 'ForeignKey'; |
||
| 508 | } |
||
| 509 | } |
||
| 510 | |||
| 511 | // Merge composite fields into DB |
||
| 512 | foreach ($compositeFields as $fieldName => $fieldSpec) { |
||
| 513 | $fieldObj = Injector::inst()->create($fieldSpec, $fieldName); |
||
| 514 | $fieldObj->setTable($class); |
||
| 515 | $nestedFields = $fieldObj->compositeDatabaseFields(); |
||
| 516 | foreach ($nestedFields as $nestedName => $nestedSpec) { |
||
| 517 | $dbFields["{$fieldName}{$nestedName}"] = $nestedSpec; |
||
| 518 | } |
||
| 519 | } |
||
| 520 | |||
| 521 | // Prevent field-less tables with only 'ID' |
||
| 522 | if (count($dbFields) < 2) { |
||
| 523 | $dbFields = []; |
||
| 524 | } |
||
| 525 | |||
| 526 | // Return cached results |
||
| 527 | $this->databaseFields[$class] = $dbFields; |
||
| 528 | $this->compositeFields[$class] = $compositeFields; |
||
| 529 | } |
||
| 530 | |||
| 531 | /** |
||
| 532 | * Cache all indexes for the given class. Will do nothing if already cached. |
||
| 533 | * |
||
| 534 | * @param $class |
||
| 535 | */ |
||
| 536 | protected function cacheDatabaseIndexes($class) |
||
| 543 | ); |
||
| 544 | } |
||
| 545 | } |
||
| 546 | |||
| 547 | /** |
||
| 548 | * Get "default" database indexable field types |
||
| 549 | * |
||
| 550 | * @param string $class |
||
| 551 | * |
||
| 552 | * @return array |
||
| 553 | */ |
||
| 554 | protected function cacheDefaultDatabaseIndexes($class) |
||
| 570 | } |
||
| 571 | |||
| 572 | /** |
||
| 573 | * Look for custom indexes declared on the class |
||
| 574 | * |
||
| 575 | * @param string $class |
||
| 576 | * |
||
| 577 | * @return array |
||
| 578 | * @throws InvalidArgumentException If an index already exists on the class |
||
| 579 | * @throws InvalidArgumentException If a custom index format is not valid |
||
| 580 | */ |
||
| 581 | protected function buildCustomDatabaseIndexes($class) |
||
| 582 | { |
||
| 583 | $indexes = []; |
||
| 584 | $classIndexes = Config::inst()->get($class, 'indexes', Config::UNINHERITED) ?: []; |
||
| 585 | foreach ($classIndexes as $indexName => $indexSpec) { |
||
| 586 | if (array_key_exists($indexName, $indexes)) { |
||
| 587 | throw new InvalidArgumentException(sprintf( |
||
| 588 | 'Index named "%s" already exists on class %s', |
||
| 589 | $indexName, |
||
| 590 | $class |
||
| 591 | )); |
||
| 592 | } |
||
| 593 | if (is_array($indexSpec)) { |
||
| 594 | if (!ArrayLib::is_associative($indexSpec)) { |
||
| 595 | $indexSpec = [ |
||
| 596 | 'columns' => $indexSpec, |
||
| 597 | ]; |
||
| 598 | } |
||
| 599 | if (!isset($indexSpec['type'])) { |
||
| 600 | $indexSpec['type'] = 'index'; |
||
| 601 | } |
||
| 602 | if (!isset($indexSpec['columns'])) { |
||
| 603 | $indexSpec['columns'] = [$indexName]; |
||
| 604 | } elseif (!is_array($indexSpec['columns'])) { |
||
| 605 | throw new InvalidArgumentException(sprintf( |
||
| 606 | 'Index %s on %s is not valid. columns should be an array %s given', |
||
| 607 | var_export($indexName, true), |
||
| 608 | var_export($class, true), |
||
| 609 | var_export($indexSpec['columns'], true) |
||
| 610 | )); |
||
| 611 | } |
||
| 612 | } else { |
||
| 613 | $indexSpec = [ |
||
| 614 | 'type' => 'index', |
||
| 615 | 'columns' => [$indexName], |
||
| 616 | ]; |
||
| 617 | } |
||
| 618 | $indexes[$indexName] = $indexSpec; |
||
| 619 | } |
||
| 620 | return $indexes; |
||
| 621 | } |
||
| 622 | |||
| 623 | protected function buildSortDatabaseIndexes($class) |
||
| 624 | { |
||
| 625 | $sort = Config::inst()->get($class, 'default_sort', Config::UNINHERITED); |
||
| 626 | $indexes = []; |
||
| 627 | |||
| 628 | if ($sort && is_string($sort)) { |
||
| 629 | $sort = preg_split('/,(?![^()]*+\\))/', $sort); |
||
| 630 | foreach ($sort as $value) { |
||
| 631 | try { |
||
| 632 | list ($table, $column) = $this->parseSortColumn(trim($value)); |
||
| 633 | $table = trim($table, '"'); |
||
| 634 | $column = trim($column, '"'); |
||
| 635 | if ($table && strtolower($table) !== strtolower(self::tableName($class))) { |
||
| 636 | continue; |
||
| 637 | } |
||
| 638 | if ($this->databaseField($class, $column, false)) { |
||
| 639 | $indexes[$column] = [ |
||
| 640 | 'type' => 'index', |
||
| 641 | 'columns' => [$column], |
||
| 642 | ]; |
||
| 643 | } |
||
| 644 | } catch (InvalidArgumentException $e) { |
||
| 645 | } |
||
| 646 | } |
||
| 647 | } |
||
| 648 | return $indexes; |
||
| 649 | } |
||
| 650 | |||
| 651 | /** |
||
| 652 | * Parses a specified column into a sort field and direction |
||
| 653 | * |
||
| 654 | * @param string $column String to parse containing the column name |
||
| 655 | * |
||
| 656 | * @return array Resolved table and column. |
||
| 657 | */ |
||
| 658 | protected function parseSortColumn($column) |
||
| 669 | } |
||
| 670 | |||
| 671 | /** |
||
| 672 | * Returns the table name in the class ancestry which contains a given |
||
| 673 | * field column for a {@link DataObject}. If the field does not exist, this |
||
| 674 | * will return null. |
||
| 675 | * |
||
| 676 | * @param string $candidateClass |
||
| 677 | * @param string $fieldName |
||
| 678 | * |
||
| 679 | * @return string |
||
| 680 | */ |
||
| 681 | public function tableForField($candidateClass, $fieldName) |
||
| 688 | } |
||
| 689 | |||
| 690 | /** |
||
| 691 | * Returns the table name(s) in the class ancestry and descendants which contain a given |
||
| 692 | * field column for a {@link DataObject}. If the field does not exist, this will return null. |
||
| 693 | * |
||
| 694 | * @param string $candidateClass |
||
| 695 | * @param string $fieldName |
||
| 696 | * |
||
| 697 | * @return string |
||
| 698 | */ |
||
| 699 | public function tablesForField($candidateClass, $fieldName) |
||
| 700 | { |
||
| 701 | $classes = $this->classesForField($candidateClass, $fieldName); |
||
| 702 | if ($classes) { |
||
| 703 | return array_map( |
||
| 704 | function ($class) { |
||
| 705 | return $this->tableName($class); |
||
| 706 | }, |
||
| 707 | $classes |
||
| 708 | ); |
||
| 709 | } |
||
| 710 | return null; |
||
| 711 | } |
||
| 712 | |||
| 713 | /** |
||
| 714 | * Returns the class name in the class ancestors which contains a given |
||
| 715 | * field column for a {@link DataObject}. If the field does not exist, this |
||
| 716 | * will return null. |
||
| 717 | * |
||
| 718 | * @param string $candidateClass |
||
| 719 | * @param string $fieldName |
||
| 720 | * |
||
| 721 | * @return string |
||
| 722 | */ |
||
| 723 | public function classForField($candidateClass, $fieldName) |
||
| 724 | { |
||
| 725 | // normalise class name |
||
| 726 | $candidateClass = ClassInfo::class_name($candidateClass); |
||
| 727 | if ($candidateClass === DataObject::class) { |
||
| 728 | return null; |
||
| 729 | } |
||
| 730 | |||
| 731 | // Short circuit for fixed fields |
||
| 732 | $fixed = DataObject::config()->uninherited('fixed_fields'); |
||
| 733 | if (isset($fixed[$fieldName])) { |
||
| 734 | return $this->baseDataClass($candidateClass); |
||
| 735 | } |
||
| 736 | |||
| 737 | // Find regular field |
||
| 738 | while ($candidateClass && $candidateClass !== DataObject::class) { |
||
| 739 | $fields = $this->databaseFields($candidateClass, false); |
||
| 740 | if (isset($fields[$fieldName])) { |
||
| 741 | return $candidateClass; |
||
| 742 | } |
||
| 743 | $candidateClass = get_parent_class($candidateClass); |
||
| 744 | } |
||
| 745 | return null; |
||
| 746 | } |
||
| 747 | |||
| 748 | /** |
||
| 749 | * Returns the class(es) name in the class ancestors and descendants which contain a given |
||
| 750 | * field column for a {@link DataObject}. If the field does not exist, this will return null. |
||
| 751 | * |
||
| 752 | * @param string $candidateClass |
||
| 753 | * @param string $fieldName |
||
| 754 | * |
||
| 755 | * @return string |
||
| 756 | */ |
||
| 757 | public function classesForField($candidateClass, $fieldName) |
||
| 758 | { |
||
| 759 | // normalise class name |
||
| 760 | $candidateClass = ClassInfo::class_name($candidateClass); |
||
| 761 | if ($candidateClass === DataObject::class) { |
||
| 762 | return null; |
||
| 763 | } |
||
| 764 | |||
| 765 | // Short circuit for fixed fields |
||
| 766 | $fixed = DataObject::config()->uninherited('fixed_fields'); |
||
| 767 | if (isset($fixed[$fieldName])) { |
||
| 768 | return [ $this->baseDataClass($candidateClass) ]; |
||
| 769 | } |
||
| 770 | |||
| 771 | $dataClasses = ClassInfo::dataClassesFor($candidateClass); |
||
| 772 | |||
| 773 | // Find regular fields |
||
| 774 | $classes = []; |
||
| 775 | foreach ($dataClasses as $dataClass) { |
||
| 776 | $fields = $this->databaseFields($dataClass, false); |
||
| 777 | if (isset($fields[$fieldName])) { |
||
| 778 | $classes[] = $dataClass; |
||
| 779 | } |
||
| 780 | } |
||
| 781 | return $classes ? $classes : null; |
||
| 782 | } |
||
| 783 | |||
| 784 | /** |
||
| 785 | * Return information about a specific many_many component. Returns a numeric array. |
||
| 786 | * The first item in the array will be the class name of the relation. |
||
| 787 | * |
||
| 788 | * Standard many_many return type is: |
||
| 789 | * |
||
| 790 | * array( |
||
| 791 | * <manyManyClass>, Name of class for relation. E.g. "Categories" |
||
| 792 | * <classname>, The class that relation is defined in e.g. "Product" |
||
| 793 | * <candidateName>, The target class of the relation e.g. "Category" |
||
| 794 | * <parentField>, The field name pointing to <classname>'s table e.g. "ProductID". |
||
| 795 | * <childField>, The field name pointing to <candidatename>'s table e.g. "CategoryID". |
||
| 796 | * <joinTableOrRelation> The join table between the two classes e.g. "Product_Categories". |
||
| 797 | * If the class name is 'ManyManyThroughList' then this is the name of the |
||
| 798 | * has_many relation. |
||
| 799 | * ) |
||
| 800 | * |
||
| 801 | * @param string $class Name of class to get component for |
||
| 802 | * @param string $component The component name |
||
| 803 | * |
||
| 804 | * @return array|null |
||
| 805 | */ |
||
| 806 | public function manyManyComponent($class, $component) |
||
| 807 | { |
||
| 808 | $classes = ClassInfo::ancestry($class); |
||
| 809 | foreach ($classes as $parentClass) { |
||
| 810 | // Check if the component is defined in many_many on this class |
||
| 811 | $otherManyMany = Config::inst()->get($parentClass, 'many_many', Config::UNINHERITED); |
||
| 812 | if (isset($otherManyMany[$component])) { |
||
| 813 | return $this->parseManyManyComponent($parentClass, $component, $otherManyMany[$component]); |
||
| 814 | } |
||
| 815 | |||
| 816 | // Check if the component is defined in belongs_many_many on this class |
||
| 817 | $belongsManyMany = Config::inst()->get($parentClass, 'belongs_many_many', Config::UNINHERITED); |
||
| 818 | if (!isset($belongsManyMany[$component])) { |
||
| 819 | continue; |
||
| 820 | } |
||
| 821 | |||
| 822 | // Extract class and relation name from dot-notation |
||
| 823 | $belongs = $this->parseBelongsManyManyComponent( |
||
| 824 | $parentClass, |
||
| 825 | $component, |
||
| 826 | $belongsManyMany[$component] |
||
| 827 | ); |
||
| 828 | |||
| 829 | // Build inverse relationship from other many_many, and swap parent/child |
||
| 830 | $otherManyMany = $this->manyManyComponent($belongs['childClass'], $belongs['relationName']); |
||
| 831 | return [ |
||
| 832 | 'relationClass' => $otherManyMany['relationClass'], |
||
| 833 | 'parentClass' => $otherManyMany['childClass'], |
||
| 834 | 'childClass' => $otherManyMany['parentClass'], |
||
| 835 | 'parentField' => $otherManyMany['childField'], |
||
| 836 | 'childField' => $otherManyMany['parentField'], |
||
| 837 | 'join' => $otherManyMany['join'], |
||
| 838 | ]; |
||
| 839 | } |
||
| 840 | return null; |
||
| 841 | } |
||
| 842 | |||
| 843 | |||
| 844 | /** |
||
| 845 | * Parse a belongs_many_many component to extract class and relationship name |
||
| 846 | * |
||
| 847 | * @param string $parentClass Name of class |
||
| 848 | * @param string $component Name of relation on class |
||
| 849 | * @param string $specification specification for this belongs_many_many |
||
| 850 | * |
||
| 851 | * @return array Array with child class and relation name |
||
| 852 | */ |
||
| 853 | protected function parseBelongsManyManyComponent($parentClass, $component, $specification) |
||
| 854 | { |
||
| 855 | $childClass = $specification; |
||
| 856 | $relationName = null; |
||
| 857 | if (strpos($specification, '.') !== false) { |
||
| 858 | list($childClass, $relationName) = explode('.', $specification, 2); |
||
| 859 | } |
||
| 860 | |||
| 861 | // Check child class exists |
||
| 862 | if (!class_exists($childClass)) { |
||
| 863 | throw new LogicException( |
||
| 864 | "belongs_many_many relation {$parentClass}.{$component} points to " |
||
| 865 | . "{$childClass} which does not exist" |
||
| 866 | ); |
||
| 867 | } |
||
| 868 | |||
| 869 | // We need to find the inverse component name, if not explicitly given |
||
| 870 | if (!$relationName) { |
||
| 871 | $relationName = $this->getManyManyInverseRelationship($childClass, $parentClass); |
||
| 872 | } |
||
| 873 | |||
| 874 | // Check valid relation found |
||
| 875 | if (!$relationName) { |
||
| 876 | throw new LogicException( |
||
| 877 | "belongs_many_many relation {$parentClass}.{$component} points to " |
||
| 878 | . "{$specification} without matching many_many" |
||
| 879 | ); |
||
| 880 | } |
||
| 881 | |||
| 882 | // Return relatios |
||
| 883 | return [ |
||
| 884 | 'childClass' => $childClass, |
||
| 885 | 'relationName' => $relationName, |
||
| 886 | ]; |
||
| 887 | } |
||
| 888 | |||
| 889 | /** |
||
| 890 | * Return the many-to-many extra fields specification for a specific component. |
||
| 891 | * |
||
| 892 | * @param string $class |
||
| 893 | * @param string $component |
||
| 894 | * |
||
| 895 | * @return array|null |
||
| 896 | */ |
||
| 897 | public function manyManyExtraFieldsForComponent($class, $component) |
||
| 898 | { |
||
| 899 | // Get directly declared many_many_extraFields |
||
| 900 | $extraFields = Config::inst()->get($class, 'many_many_extraFields'); |
||
| 901 | if (isset($extraFields[$component])) { |
||
| 902 | return $extraFields[$component]; |
||
| 903 | } |
||
| 904 | |||
| 905 | // If not belongs_many_many then there are no components |
||
| 906 | while ($class && ($class !== DataObject::class)) { |
||
| 907 | $belongsManyMany = Config::inst()->get($class, 'belongs_many_many', Config::UNINHERITED); |
||
| 908 | if (isset($belongsManyMany[$component])) { |
||
| 909 | // Reverse relationship and find extrafields from child class |
||
| 910 | $belongs = $this->parseBelongsManyManyComponent( |
||
| 911 | $class, |
||
| 912 | $component, |
||
| 913 | $belongsManyMany[$component] |
||
| 914 | ); |
||
| 915 | return $this->manyManyExtraFieldsForComponent($belongs['childClass'], $belongs['relationName']); |
||
| 916 | } |
||
| 917 | $class = get_parent_class($class); |
||
| 918 | } |
||
| 919 | return null; |
||
| 920 | } |
||
| 921 | |||
| 922 | /** |
||
| 923 | * Return data for a specific has_many component. |
||
| 924 | * |
||
| 925 | * @param string $class Parent class |
||
| 926 | * @param string $component |
||
| 927 | * @param bool $classOnly If this is TRUE, than any has_many relationships in the form |
||
| 928 | * "ClassName.Field" will have the field data stripped off. It defaults to TRUE. |
||
| 929 | * |
||
| 930 | * @return string|null |
||
| 931 | */ |
||
| 932 | public function hasManyComponent($class, $component, $classOnly = true) |
||
| 933 | { |
||
| 934 | $hasMany = (array)Config::inst()->get($class, 'has_many'); |
||
| 935 | if (!isset($hasMany[$component])) { |
||
| 936 | return null; |
||
| 937 | } |
||
| 938 | |||
| 939 | // Remove has_one specifier if given |
||
| 940 | $hasMany = $hasMany[$component]; |
||
| 941 | $hasManyClass = strtok($hasMany, '.'); |
||
| 942 | |||
| 943 | // Validate |
||
| 944 | $this->checkRelationClass($class, $component, $hasManyClass, 'has_many'); |
||
| 945 | return $classOnly ? $hasManyClass : $hasMany; |
||
| 946 | } |
||
| 947 | |||
| 948 | /** |
||
| 949 | * Return data for a specific has_one component. |
||
| 950 | * |
||
| 951 | * @param string $class |
||
| 952 | * @param string $component |
||
| 953 | * |
||
| 954 | * @return string|null |
||
| 955 | */ |
||
| 956 | public function hasOneComponent($class, $component) |
||
| 957 | { |
||
| 958 | $hasOnes = Config::forClass($class)->get('has_one'); |
||
| 959 | if (!isset($hasOnes[$component])) { |
||
| 960 | return null; |
||
| 961 | } |
||
| 962 | |||
| 963 | // Validate |
||
| 964 | $relationClass = $hasOnes[$component]; |
||
| 965 | $this->checkRelationClass($class, $component, $relationClass, 'has_one'); |
||
| 966 | return $relationClass; |
||
| 967 | } |
||
| 968 | |||
| 969 | /** |
||
| 970 | * Return data for a specific belongs_to component. |
||
| 971 | * |
||
| 972 | * @param string $class |
||
| 973 | * @param string $component |
||
| 974 | * @param bool $classOnly If this is TRUE, than any has_many relationships in the |
||
| 975 | * form "ClassName.Field" will have the field data stripped off. It defaults to TRUE. |
||
| 976 | * |
||
| 977 | * @return string|null |
||
| 978 | */ |
||
| 979 | public function belongsToComponent($class, $component, $classOnly = true) |
||
| 980 | { |
||
| 981 | $belongsTo = (array)Config::forClass($class)->get('belongs_to'); |
||
| 982 | if (!isset($belongsTo[$component])) { |
||
| 983 | return null; |
||
| 984 | } |
||
| 985 | |||
| 986 | // Remove has_one specifier if given |
||
| 987 | $belongsTo = $belongsTo[$component]; |
||
| 988 | $belongsToClass = strtok($belongsTo, '.'); |
||
| 989 | |||
| 990 | // Validate |
||
| 991 | $this->checkRelationClass($class, $component, $belongsToClass, 'belongs_to'); |
||
| 992 | return $classOnly ? $belongsToClass : $belongsTo; |
||
| 993 | } |
||
| 994 | |||
| 995 | /** |
||
| 996 | * Check class for any unary component |
||
| 997 | * |
||
| 998 | * Alias for hasOneComponent() ?: belongsToComponent() |
||
| 999 | * |
||
| 1000 | * @param string $class |
||
| 1001 | * @param string $component |
||
| 1002 | * |
||
| 1003 | * @return string|null |
||
| 1004 | */ |
||
| 1005 | public function unaryComponent($class, $component) |
||
| 1006 | { |
||
| 1007 | return $this->hasOneComponent($class, $component) ?: $this->belongsToComponent($class, $component); |
||
| 1008 | } |
||
| 1009 | |||
| 1010 | /** |
||
| 1011 | * |
||
| 1012 | * @param string $parentClass Parent class name |
||
| 1013 | * @param string $component ManyMany name |
||
| 1014 | * @param string|array $specification Declaration of many_many relation type |
||
| 1015 | * |
||
| 1016 | * @return array |
||
| 1017 | */ |
||
| 1018 | protected function parseManyManyComponent($parentClass, $component, $specification) |
||
| 1019 | { |
||
| 1020 | // Check if this is many_many_through |
||
| 1021 | if (is_array($specification)) { |
||
| 1022 | // Validate join, parent and child classes |
||
| 1023 | $joinClass = $this->checkManyManyJoinClass($parentClass, $component, $specification); |
||
| 1024 | $parentClass = $this->checkManyManyFieldClass($parentClass, $component, $joinClass, $specification, 'from'); |
||
| 1025 | $joinChildClass = $this->checkManyManyFieldClass($parentClass, $component, $joinClass, $specification, 'to'); |
||
| 1026 | return [ |
||
| 1027 | 'relationClass' => ManyManyThroughList::class, |
||
| 1028 | 'parentClass' => $parentClass, |
||
| 1029 | 'childClass' => $joinChildClass, |
||
| 1030 | /** @internal Polymorphic many_many is experimental */ |
||
| 1031 | 'parentField' => $specification['from'] . ($parentClass === DataObject::class ? '' : 'ID'), |
||
| 1032 | 'childField' => $specification['to'] . 'ID', |
||
| 1033 | 'join' => $joinClass, |
||
| 1034 | ]; |
||
| 1035 | } |
||
| 1036 | |||
| 1037 | // Validate $specification class is valid |
||
| 1038 | $this->checkRelationClass($parentClass, $component, $specification, 'many_many'); |
||
| 1039 | |||
| 1040 | // automatic scaffolded many_many table |
||
| 1041 | $classTable = $this->tableName($parentClass); |
||
| 1042 | $parentField = "{$classTable}ID"; |
||
| 1043 | if ($parentClass === $specification) { |
||
| 1044 | $childField = "ChildID"; |
||
| 1045 | } else { |
||
| 1046 | $candidateTable = $this->tableName($specification); |
||
| 1047 | $childField = "{$candidateTable}ID"; |
||
| 1048 | } |
||
| 1049 | $joinTable = "{$classTable}_{$component}"; |
||
| 1050 | return [ |
||
| 1051 | 'relationClass' => ManyManyList::class, |
||
| 1052 | 'parentClass' => $parentClass, |
||
| 1053 | 'childClass' => $specification, |
||
| 1054 | 'parentField' => $parentField, |
||
| 1055 | 'childField' => $childField, |
||
| 1056 | 'join' => $joinTable, |
||
| 1057 | ]; |
||
| 1058 | } |
||
| 1059 | |||
| 1060 | /** |
||
| 1061 | * Find a many_many on the child class that points back to this many_many |
||
| 1062 | * |
||
| 1063 | * @param string $childClass |
||
| 1064 | * @param string $parentClass |
||
| 1065 | * |
||
| 1066 | * @return string|null |
||
| 1067 | */ |
||
| 1068 | protected function getManyManyInverseRelationship($childClass, $parentClass) |
||
| 1069 | { |
||
| 1070 | $otherManyMany = Config::inst()->get($childClass, 'many_many', Config::UNINHERITED); |
||
| 1071 | if (!$otherManyMany) { |
||
| 1072 | return null; |
||
| 1073 | } |
||
| 1074 | foreach ($otherManyMany as $inverseComponentName => $manyManySpec) { |
||
| 1075 | // Normal many-many |
||
| 1076 | if ($manyManySpec === $parentClass) { |
||
| 1077 | return $inverseComponentName; |
||
| 1078 | } |
||
| 1079 | // many-many through, inspect 'to' for the many_many |
||
| 1080 | if (is_array($manyManySpec)) { |
||
| 1081 | $toClass = $this->hasOneComponent($manyManySpec['through'], $manyManySpec['to']); |
||
| 1082 | if ($toClass === $parentClass) { |
||
| 1083 | return $inverseComponentName; |
||
| 1084 | } |
||
| 1085 | } |
||
| 1086 | } |
||
| 1087 | return null; |
||
| 1088 | } |
||
| 1089 | |||
| 1090 | /** |
||
| 1091 | * Tries to find the database key on another object that is used to store a |
||
| 1092 | * relationship to this class. If no join field can be found it defaults to 'ParentID'. |
||
| 1093 | * |
||
| 1094 | * If the remote field is polymorphic then $polymorphic is set to true, and the return value |
||
| 1095 | * is in the form 'Relation' instead of 'RelationID', referencing the composite DBField. |
||
| 1096 | * |
||
| 1097 | * @param string $class |
||
| 1098 | * @param string $component Name of the relation on the current object pointing to the |
||
| 1099 | * remote object. |
||
| 1100 | * @param string $type the join type - either 'has_many' or 'belongs_to' |
||
| 1101 | * @param boolean $polymorphic Flag set to true if the remote join field is polymorphic. |
||
| 1102 | * |
||
| 1103 | * @return string |
||
| 1104 | * @throws Exception |
||
| 1105 | */ |
||
| 1106 | public function getRemoteJoinField($class, $component, $type = 'has_many', &$polymorphic = false) |
||
| 1107 | { |
||
| 1108 | // Extract relation from current object |
||
| 1109 | if ($type === 'has_many') { |
||
| 1110 | $remoteClass = $this->hasManyComponent($class, $component, false); |
||
| 1111 | } else { |
||
| 1112 | $remoteClass = $this->belongsToComponent($class, $component, false); |
||
| 1113 | } |
||
| 1114 | |||
| 1115 | if (empty($remoteClass)) { |
||
| 1116 | throw new Exception("Unknown $type component '$component' on class '$class'"); |
||
| 1117 | } |
||
| 1118 | if (!ClassInfo::exists(strtok($remoteClass, '.'))) { |
||
| 1119 | throw new Exception( |
||
| 1120 | "Class '$remoteClass' not found, but used in $type component '$component' on class '$class'" |
||
| 1121 | ); |
||
| 1122 | } |
||
| 1123 | |||
| 1124 | // If presented with an explicit field name (using dot notation) then extract field name |
||
| 1125 | $remoteField = null; |
||
| 1126 | if (strpos($remoteClass, '.') !== false) { |
||
| 1127 | list($remoteClass, $remoteField) = explode('.', $remoteClass); |
||
| 1128 | } |
||
| 1129 | |||
| 1130 | // Reference remote has_one to check against |
||
| 1131 | $remoteRelations = Config::inst()->get($remoteClass, 'has_one'); |
||
| 1132 | |||
| 1133 | // Without an explicit field name, attempt to match the first remote field |
||
| 1134 | // with the same type as the current class |
||
| 1135 | if (empty($remoteField)) { |
||
| 1136 | // look for remote has_one joins on this class or any parent classes |
||
| 1137 | $remoteRelationsMap = array_flip($remoteRelations); |
||
| 1138 | foreach (array_reverse(ClassInfo::ancestry($class)) as $ancestryClass) { |
||
| 1139 | if (array_key_exists($ancestryClass, $remoteRelationsMap)) { |
||
| 1140 | $remoteField = $remoteRelationsMap[$ancestryClass]; |
||
| 1141 | break; |
||
| 1142 | } |
||
| 1143 | } |
||
| 1144 | } |
||
| 1145 | |||
| 1146 | // In case of an indeterminate remote field show an error |
||
| 1147 | if (empty($remoteField)) { |
||
| 1148 | $polymorphic = false; |
||
| 1149 | $message = "No has_one found on class '$remoteClass'"; |
||
| 1150 | if ($type == 'has_many') { |
||
| 1151 | // include a hint for has_many that is missing a has_one |
||
| 1152 | $message .= ", the has_many relation from '$class' to '$remoteClass'"; |
||
| 1153 | $message .= " requires a has_one on '$remoteClass'"; |
||
| 1154 | } |
||
| 1155 | throw new Exception($message); |
||
| 1156 | } |
||
| 1157 | |||
| 1158 | // If given an explicit field name ensure the related class specifies this |
||
| 1159 | if (empty($remoteRelations[$remoteField])) { |
||
| 1160 | throw new Exception("Missing expected has_one named '$remoteField' |
||
| 1161 | on class '$remoteClass' referenced by $type named '$component' |
||
| 1162 | on class {$class}"); |
||
| 1163 | } |
||
| 1164 | |||
| 1165 | // Inspect resulting found relation |
||
| 1166 | if ($remoteRelations[$remoteField] === DataObject::class) { |
||
| 1167 | $polymorphic = true; |
||
| 1168 | return $remoteField; // Composite polymorphic field does not include 'ID' suffix |
||
| 1169 | } else { |
||
| 1170 | $polymorphic = false; |
||
| 1171 | return $remoteField . 'ID'; |
||
| 1172 | } |
||
| 1173 | } |
||
| 1174 | |||
| 1175 | /** |
||
| 1176 | * Validate the to or from field on a has_many mapping class |
||
| 1177 | * |
||
| 1178 | * @param string $parentClass Name of parent class |
||
| 1179 | * @param string $component Name of many_many component |
||
| 1180 | * @param string $joinClass Class for the joined table |
||
| 1181 | * @param array $specification Complete many_many specification |
||
| 1182 | * @param string $key Name of key to check ('from' or 'to') |
||
| 1183 | * |
||
| 1184 | * @return string Class that matches the given relation |
||
| 1185 | * @throws InvalidArgumentException |
||
| 1186 | */ |
||
| 1187 | protected function checkManyManyFieldClass($parentClass, $component, $joinClass, $specification, $key) |
||
| 1239 | } |
||
| 1240 | |||
| 1241 | /** |
||
| 1242 | * @param string $parentClass Name of parent class |
||
| 1243 | * @param string $component Name of many_many component |
||
| 1244 | * @param array $specification Complete many_many specification |
||
| 1245 | * |
||
| 1246 | * @return string Name of join class |
||
| 1247 | */ |
||
| 1248 | protected function checkManyManyJoinClass($parentClass, $component, $specification) |
||
| 1263 | } |
||
| 1264 | |||
| 1265 | /** |
||
| 1266 | * Validate a given class is valid for a relation |
||
| 1267 | * |
||
| 1268 | * @param string $class Parent class |
||
| 1269 | * @param string $component Component name |
||
| 1270 | * @param string $relationClass Candidate class to check |
||
| 1271 | * @param string $type Relation type (e.g. has_one) |
||
| 1272 | */ |
||
| 1273 | protected function checkRelationClass($class, $component, $relationClass, $type) |
||
| 1274 | { |
||
| 1275 | if (!is_string($component) || is_numeric($component)) { |
||
| 1276 | throw new InvalidArgumentException( |
||
| 1304 |
Loading history...
