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 NodePagesConfiguration 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 NodePagesConfiguration, and based on these observations, apply Extract Interface, too.
| 1 | <?php  | 
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| 36 | class NodePagesConfiguration implements SearchConfigurationInterface  | 
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| 37 | { | 
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| 38 | /** @var string */  | 
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| 39 | protected $indexName;  | 
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| 40 | |||
| 41 | /** @var string */  | 
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| 42 | protected $indexType;  | 
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| 43 | |||
| 44 | /** @var SearchProviderInterface */  | 
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| 45 | protected $searchProvider;  | 
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| 46 | |||
| 47 | /** @var array */  | 
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| 48 | protected $locales = [];  | 
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| 49 | |||
| 50 | /** @var array */  | 
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| 51 | protected $analyzerLanguages;  | 
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| 52 | |||
| 53 | /** @var EntityManager */  | 
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| 54 | protected $em;  | 
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| 55 | |||
| 56 | /** @var array */  | 
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| 57 | protected $documents = [];  | 
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| 58 | |||
| 59 | /** @var ContainerInterface */  | 
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| 60 | protected $container;  | 
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| 61 | |||
| 62 | /** @var AclProviderInterface */  | 
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| 63 | protected $aclProvider = null;  | 
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| 64 | |||
| 65 | /** @var LoggerInterface */  | 
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| 66 | protected $logger = null;  | 
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| 67 | |||
| 68 | /** @var IndexablePagePartsService */  | 
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| 69 | protected $indexablePagePartsService;  | 
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| 70 | |||
| 71 | /** @var DomainConfigurationInterface */  | 
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| 72 | protected $domainConfiguration;  | 
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| 73 | |||
| 74 | /** @var array */  | 
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| 75 | protected $properties = [];  | 
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| 76 | |||
| 77 | /** @var int */  | 
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| 78 | protected $numberOfShards;  | 
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| 79 | |||
| 80 | /** @var int */  | 
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| 81 | protected $numberOfReplicas;  | 
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| 82 | |||
| 83 | /** @var Node */  | 
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| 84 | protected $currentTopNode = null;  | 
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| 85 | |||
| 86 | /** @var array */  | 
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| 87 | protected $nodeRefs = [];  | 
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| 88 | |||
| 89 | /**  | 
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| 90 | * @param ContainerInterface $container  | 
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| 91 | * @param SearchProviderInterface $searchProvider  | 
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| 92 | * @param string $name  | 
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| 93 | * @param string $type  | 
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| 94 | */  | 
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| 95 | public function __construct($container, $searchProvider, $name, $type, $numberOfShards = 1, $numberOfReplicas = 0)  | 
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| 108 | |||
| 109 | /**  | 
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| 110 | * @param AclProviderInterface $aclProvider  | 
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| 111 | */  | 
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| 112 | public function setAclProvider(AclProviderInterface $aclProvider)  | 
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| 116 | |||
| 117 | /**  | 
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| 118 | * @param IndexablePagePartsService $indexablePagePartsService  | 
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| 119 | */  | 
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| 120 | public function setIndexablePagePartsService(IndexablePagePartsService $indexablePagePartsService)  | 
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| 124 | |||
| 125 | /**  | 
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| 126 | * @param array $properties  | 
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| 127 | */  | 
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| 128 | public function setDefaultProperties(array $properties)  | 
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| 132 | |||
| 133 | /**  | 
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| 134 | * @param LoggerInterface $logger  | 
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| 135 | */  | 
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| 136 | public function setLogger(LoggerInterface $logger)  | 
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| 140 | |||
| 141 | /**  | 
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| 142 | * @return array  | 
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| 143 | */  | 
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| 144 | public function getLanguagesNotAnalyzed()  | 
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| 159 | |||
| 160 | /**  | 
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| 161 | * Create node index  | 
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| 162 | */  | 
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| 163 | public function createIndex()  | 
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| 192 | |||
| 193 | /**  | 
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| 194 | * Populate node index  | 
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| 195 | */  | 
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| 196 | public function populateIndex()  | 
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| 213 | |||
| 214 | /**  | 
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| 215 | * Index a node (including its children) - for the specified language only  | 
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| 216 | *  | 
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| 217 | * @param Node $node  | 
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| 218 | * @param string $lang  | 
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| 219 | */  | 
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| 220 | public function indexNode(Node $node, $lang)  | 
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| 229 | |||
| 230 | /**  | 
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| 231 | * Add documents for the node translation (and children) to the index  | 
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| 232 | *  | 
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| 233 | * @param Node $node  | 
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| 234 | * @param string $lang  | 
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| 235 | */  | 
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| 236 | public function createNodeDocuments(Node $node, $lang)  | 
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| 243 | |||
| 244 | /**  | 
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| 245 | * Index all children of the specified node (only for the specified  | 
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| 246 | * language)  | 
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| 247 | *  | 
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| 248 | * @param Node $node  | 
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| 249 | * @param string $lang  | 
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| 250 | */  | 
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| 251 | public function indexChildren(Node $node, $lang)  | 
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| 257 | |||
| 258 | /**  | 
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| 259 | * Index a node translation  | 
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| 260 | *  | 
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| 261 | * @param NodeTranslation $nodeTranslation  | 
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| 262 | * @param bool $add Add node immediately to index?  | 
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| 263 | *  | 
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| 264 | * @return bool Return true if the document has been indexed  | 
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| 265 | */  | 
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| 266 | public function indexNodeTranslation(NodeTranslation $nodeTranslation, $add = false)  | 
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| 298 | |||
| 299 | /**  | 
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| 300 | * Return if the page is indexable - by default all pages are indexable,  | 
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| 301 | * you can override this by implementing the IndexableInterface on your  | 
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| 302 | * page entity and returning false in the isIndexable method.  | 
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| 303 | *  | 
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| 304 | * @param HasNodeInterface $page  | 
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| 305 | *  | 
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| 306 | * @return bool  | 
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| 307 | */  | 
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| 308 | protected function isIndexable(HasNodeInterface $page)  | 
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| 312 | |||
| 313 | /**  | 
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| 314 | * Remove the specified node translation from the index  | 
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| 315 | *  | 
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| 316 | * @param NodeTranslation $nodeTranslation  | 
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| 317 | */  | 
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| 318 | public function deleteNodeTranslation(NodeTranslation $nodeTranslation)  | 
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| 324 | |||
| 325 | /**  | 
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| 326 | * Delete the specified index  | 
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| 327 | */  | 
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| 328 | public function deleteIndex()  | 
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| 334 | |||
| 335 | /**  | 
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| 336 | * Apply the analysis factory to the index  | 
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| 337 | *  | 
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| 338 | * @param Index $index  | 
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| 339 | * @param AnalysisFactoryInterface $analysis  | 
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| 340 | */  | 
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| 341 | public function setAnalysis(Index $index, AnalysisFactoryInterface $analysis)  | 
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| 377 | |||
| 378 | /**  | 
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| 379 | * Return default search fields mapping for node translations  | 
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| 380 | *  | 
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| 381 | * @param Index $index  | 
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| 382 | * @param string $lang  | 
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| 383 | *  | 
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| 384 | * @return Mapping|\Elastica\Mapping  | 
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| 385 | */  | 
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| 386 | protected function createDefaultSearchFieldsMapping(Index $index, $lang = 'en')  | 
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| 399 | |||
| 400 | /**  | 
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| 401 | * Initialize the index with the default search fields mapping  | 
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| 402 | *  | 
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| 403 | * @param Index $index  | 
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| 404 | * @param string $lang  | 
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| 405 | */  | 
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| 406 | protected function setMapping(Index $index, $lang = 'en')  | 
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| 416 | |||
| 417 | /**  | 
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| 418 | * Create a search document for a page  | 
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| 419 | *  | 
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| 420 | * @param NodeTranslation $nodeTranslation  | 
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| 421 | * @param Node $node  | 
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| 422 | * @param NodeVersion $publicNodeVersion  | 
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| 423 | * @param HasNodeInterface $page  | 
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| 424 | */  | 
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| 425 | protected function addPageToIndex(  | 
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| 483 | |||
| 484 | /**  | 
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| 485 | * Add view permissions to the index document  | 
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| 486 | *  | 
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| 487 | * @param Node $node  | 
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| 488 | * @param array $doc  | 
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| 489 | *  | 
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| 490 | * @return array  | 
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| 491 | */  | 
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| 492 | protected function addPermissions(Node $node, &$doc)  | 
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| 502 | |||
| 503 | /**  | 
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| 504 | * Add type to the index document  | 
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| 505 | *  | 
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| 506 | * @param object $page  | 
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| 507 | * @param array $doc  | 
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| 508 | *  | 
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| 509 | * @return array  | 
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| 510 | */  | 
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| 511 | protected function addSearchType($page, &$doc)  | 
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| 515 | |||
| 516 | /**  | 
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| 517 | * Add parent nodes to the index document  | 
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| 518 | *  | 
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| 519 | * @param Node $node  | 
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| 520 | * @param array $doc  | 
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| 521 | *  | 
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| 522 | * @return array  | 
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| 523 | */  | 
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| 524 | protected function addParentAndAncestors($node, &$doc)  | 
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| 538 | |||
| 539 | /**  | 
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| 540 | * Add page content to the index document  | 
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| 541 | *  | 
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| 542 | * @param NodeTranslation $nodeTranslation  | 
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| 543 | * @param HasNodeInterface $page  | 
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| 544 | * @param array $doc  | 
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| 545 | */  | 
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| 546 | protected function addPageContent(NodeTranslation $nodeTranslation, $page, &$doc)  | 
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| 577 | |||
| 578 | /**  | 
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| 579 | * Enter request scope if it is not active yet...  | 
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| 580 | *  | 
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| 581 | * @param string $lang  | 
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| 582 | */  | 
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| 583 | protected function enterRequestScope($lang)  | 
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| 601 | |||
| 602 | /**  | 
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| 603 | * Render a custom search view  | 
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| 604 | *  | 
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| 605 | * @param NodeTranslation $nodeTranslation  | 
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| 606 | * @param SearchViewTemplateInterface $page  | 
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| 607 | * @param EngineInterface $renderer  | 
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| 608 | *  | 
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| 609 | * @return string  | 
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| 610 | */  | 
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| 611 | protected function renderCustomSearchView(  | 
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| 638 | |||
| 639 | /**  | 
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| 640 | * Render default search view (all indexable pageparts in the main context  | 
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| 641 | * of the page)  | 
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| 642 | *  | 
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| 643 | * @param NodeTranslation $nodeTranslation  | 
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| 644 | * @param HasPagePartsInterface $page  | 
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| 645 | * @param EngineInterface $renderer  | 
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| 646 | *  | 
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| 647 | * @return string  | 
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| 648 | */  | 
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| 649 | protected function renderDefaultSearchView(  | 
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| 670 | |||
| 671 | /**  | 
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| 672 | * Add custom data to index document (you can override to add custom fields  | 
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| 673 | * to the search index)  | 
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| 674 | *  | 
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| 675 | * @param HasNodeInterface $page  | 
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| 676 | * @param array $doc  | 
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| 677 | */  | 
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| 678 | protected function addCustomData(HasNodeInterface $page, &$doc)  | 
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| 689 | |||
| 690 | /**  | 
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| 691 | * Convert a DateTime to UTC equivalent...  | 
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| 692 | *  | 
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| 693 | * @param \DateTime $dateTime  | 
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| 694 | *  | 
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| 695 | * @return \DateTime  | 
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| 696 | */  | 
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| 697 | protected function getUTCDateTime(\DateTime $dateTime)  | 
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| 704 | |||
| 705 | /**  | 
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| 706 | * Removes all HTML markup & decode HTML entities  | 
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| 707 | *  | 
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| 708 | * @param $text  | 
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| 709 | *  | 
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| 710 | * @return string  | 
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| 711 | */  | 
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| 712 | protected function removeHtml($text)  | 
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| 736 | |||
| 737 | /**  | 
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| 738 | * Fetch ACL permissions for the specified entity  | 
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| 739 | *  | 
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| 740 | * @param object $object  | 
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| 741 | *  | 
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| 742 | * @return array  | 
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| 743 | */  | 
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| 744 | protected function getAclPermissions($object)  | 
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| 772 | |||
| 773 | /**  | 
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| 774 | * @param $publicNodeVersion  | 
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| 775 | *  | 
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| 776 | * @return mixed  | 
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| 777 | */  | 
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| 778 | private function getNodeRefPage(NodeVersion $publicNodeVersion)  | 
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| 788 | }  | 
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| 789 | 
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..