Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
Complex classes like DocumentModel 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 DocumentModel, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 28 | class DocumentModel extends SchemaModel implements ModelInterface |
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| 29 | { |
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| 30 | /** |
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| 31 | * @var string |
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| 32 | */ |
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| 33 | protected $description; |
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| 34 | /** |
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| 35 | * @var string[] |
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| 36 | */ |
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| 37 | protected $fieldTitles; |
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| 38 | /** |
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| 39 | * @var string[] |
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| 40 | */ |
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| 41 | protected $fieldDescriptions; |
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| 42 | /** |
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| 43 | * @var string[] |
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| 44 | */ |
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| 45 | protected $requiredFields = array(); |
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| 46 | /** |
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| 47 | * @var string[] |
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| 48 | */ |
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| 49 | protected $searchableFields = array(); |
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| 50 | /** |
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| 51 | * @var DocumentRepository |
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| 52 | */ |
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| 53 | private $repository; |
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| 54 | /** |
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| 55 | * @var Visitor |
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| 56 | */ |
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| 57 | private $visitor; |
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| 58 | /** |
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| 59 | * @var array |
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| 60 | */ |
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| 61 | protected $notModifiableOriginRecords; |
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| 62 | /** |
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| 63 | * @var integer |
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| 64 | */ |
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| 65 | private $paginationDefaultLimit; |
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| 66 | |||
| 67 | /** |
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| 68 | * @var Logger |
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| 69 | */ |
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| 70 | private $logger; |
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| 71 | |||
| 72 | /** |
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| 73 | * @var boolean |
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| 74 | */ |
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| 75 | protected $filterByAuthUser; |
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| 76 | |||
| 77 | /** |
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| 78 | * @var string |
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| 79 | */ |
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| 80 | protected $filterByAuthField; |
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| 81 | |||
| 82 | /** |
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| 83 | * @var RqlTranslator |
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| 84 | */ |
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| 85 | protected $translator; |
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| 86 | |||
| 87 | /** |
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| 88 | * @param Visitor $visitor rql query visitor |
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| 89 | * @param RqlTranslator $translator Translator for query modification |
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| 90 | * @param array $notModifiableOriginRecords strings with not modifiable recordOrigin values |
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| 91 | * @param integer $paginationDefaultLimit amount of data records to be returned when in pagination context |
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| 92 | * @param Logger $logger The defined system logger |
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| 93 | */ |
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| 94 | public function __construct( |
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| 108 | |||
| 109 | /** |
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| 110 | * get repository instance |
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| 111 | * |
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| 112 | * @return DocumentRepository |
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| 113 | */ |
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| 114 | public function getRepository() |
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| 118 | |||
| 119 | /** |
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| 120 | * create new app model |
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| 121 | * |
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| 122 | * @param DocumentRepository $repository Repository of countries |
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| 123 | * |
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| 124 | * @return \Graviton\RestBundle\Model\DocumentModel |
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| 125 | */ |
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| 126 | public function setRepository(DocumentRepository $repository) |
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| 132 | |||
| 133 | /** |
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| 134 | * {@inheritDoc} |
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| 135 | * |
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| 136 | * @param Request $request The request object |
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| 137 | * @param SecurityUser $user SecurityUser Object |
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| 138 | * @param SchemaDocument $schema Schema model used for search fields extraction |
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| 139 | * |
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| 140 | * @return array |
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| 141 | */ |
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| 142 | public function findAll(Request $request, SecurityUser $user = null, SchemaDocument $schema = null) |
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| 249 | |||
| 250 | /** |
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| 251 | * @return string the version of the MongoDB as a string |
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| 252 | */ |
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| 253 | public function getMongoDBVersion() |
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| 264 | |||
| 265 | /** |
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| 266 | * @param \Graviton\I18nBundle\Document\Translatable $entity entity to insert |
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| 267 | * |
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| 268 | * @return Object |
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| 269 | */ |
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| 270 | View Code Duplication | public function insertRecord($entity) |
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| 279 | |||
| 280 | /** |
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| 281 | * @param string $documentId id of entity to find |
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| 282 | * |
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| 283 | * @return Object |
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| 284 | */ |
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| 285 | public function find($documentId) |
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| 289 | |||
| 290 | /** |
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| 291 | * {@inheritDoc} |
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| 292 | * |
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| 293 | * @param string $documentId id of entity to update |
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| 294 | * @param Object $entity new entity |
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| 295 | * |
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| 296 | * @return Object |
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| 297 | */ |
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| 298 | View Code Duplication | public function updateRecord($documentId, $entity) |
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| 309 | |||
| 310 | /** |
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| 311 | * {@inheritDoc} |
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| 312 | * |
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| 313 | * @param string $documentId id of entity to delete |
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| 314 | * |
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| 315 | * @return null|Object |
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| 316 | */ |
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| 317 | public function deleteRecord($documentId) |
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| 332 | |||
| 333 | /** |
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| 334 | * get classname of entity |
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| 335 | * |
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| 336 | * @return string |
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| 337 | */ |
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| 338 | public function getEntityClass() |
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| 342 | |||
| 343 | /** |
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| 344 | * {@inheritDoc} |
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| 345 | * |
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| 346 | * Currently this is being used to build the route id used for redirecting |
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| 347 | * to newly made documents. It might benefit from having a different name |
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| 348 | * for those purposes. |
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| 349 | * |
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| 350 | * We might use a convention based mapping here: |
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| 351 | * Graviton\CoreBundle\Document\App -> mongodb://graviton_core |
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| 352 | * Graviton\CoreBundle\Entity\Table -> mysql://graviton_core |
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| 353 | * |
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| 354 | * @todo implement this in a more convention based manner |
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| 355 | * |
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| 356 | * @return string |
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| 357 | */ |
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| 358 | public function getConnectionName() |
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| 364 | |||
| 365 | /** |
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| 366 | * Does the actual query using the RQL Bundle. |
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| 367 | * |
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| 368 | * @param Builder $queryBuilder Doctrine ODM QueryBuilder |
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| 369 | * @param Query $query query from parser |
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| 370 | * |
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| 371 | * @return array |
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| 372 | */ |
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| 373 | protected function doRqlQuery($queryBuilder, Query $query) |
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| 379 | |||
| 380 | /** |
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| 381 | * Checks the recordOrigin attribute of a record and will throw an exception if value is not allowed |
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| 382 | * |
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| 383 | * @param Object $record record |
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| 384 | * |
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| 385 | * @return void |
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| 386 | */ |
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| 387 | protected function checkIfOriginRecord($record) |
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| 402 | |||
| 403 | /** |
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| 404 | * Determines the configured amount fo data records to be returned in pagination context. |
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| 405 | * |
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| 406 | * @return int |
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| 407 | */ |
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| 408 | private function getDefaultLimit() |
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| 416 | |||
| 417 | /** |
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| 418 | * @param Boolean $active active |
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| 419 | * @param String $field field |
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| 420 | * @return void |
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| 421 | */ |
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| 422 | public function setFilterByAuthUser($active, $field) |
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| 427 | } |
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| 428 |
This check looks for
@paramannotations where the type inferred by our type inference engine differs from the declared type.It makes a suggestion as to what type it considers more descriptive.
Most often this is a case of a parameter that can be null in addition to its declared types.