NatLibFi /
Skosmos
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 Vocabulary 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 Vocabulary, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 6 | class Vocabulary extends DataObject implements Modifiable |
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| 7 | { |
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| 8 | /** cached value of URI space */ |
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| 9 | private $urispace = null; |
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| 10 | private $config; |
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| 11 | |||
| 12 | public function __construct($model, $resource) |
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| 17 | |||
| 18 | /** |
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| 19 | * Returns the VocabularyConfig object |
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| 20 | * @return VocabularyConfig |
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| 21 | */ |
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| 22 | public function getConfig() |
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| 26 | |||
| 27 | /** |
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| 28 | * Get the SPARQL endpoint URL for this vocabulary |
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| 29 | * |
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| 30 | * @return string endpoint URL |
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| 31 | */ |
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| 32 | public function getEndpoint() |
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| 36 | |||
| 37 | /** |
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| 38 | * Get the SPARQL graph URI for this vocabulary |
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| 39 | * |
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| 40 | * @return string|null graph URI |
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| 41 | */ |
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| 42 | public function getGraph() |
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| 51 | |||
| 52 | /** |
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| 53 | * Get the SPARQL implementation for this vocabulary |
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| 54 | * |
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| 55 | * @return GenericSparql SPARQL object |
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| 56 | */ |
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| 57 | public function getSparql() |
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| 66 | |||
| 67 | /** |
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| 68 | * Get the URI space of concepts in this vocabulary. |
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| 69 | * |
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| 70 | * @return string full URI of concept |
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| 71 | */ |
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| 72 | public function getUriSpace() |
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| 81 | |||
| 82 | /** |
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| 83 | * Return true if the URI is within the URI space of this vocabulary. |
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| 84 | * |
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| 85 | * @param string full URI of concept |
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| 86 | * @return bool true if URI is within URI namespace, false otherwise |
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| 87 | */ |
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| 88 | |||
| 89 | public function containsURI($uri) |
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| 93 | |||
| 94 | /** |
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| 95 | * Get the full URI of a concept in a vocabulary. If the passed local |
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| 96 | * name is already a full URI, return it unchanged. |
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| 97 | * |
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| 98 | * @param $lname string local name of concept |
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| 99 | * @return string full URI of concept |
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| 100 | */ |
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| 101 | public function getConceptURI($lname) |
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| 109 | |||
| 110 | /** |
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| 111 | * Asks the sparql implementation to make a label query for a uri. |
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| 112 | * @param string $uri |
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| 113 | * @param string $lang |
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| 114 | */ |
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| 115 | public function getConceptLabel($uri, $lang) |
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| 119 | |||
| 120 | /** |
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| 121 | * Get the localname of a concept in the vocabulary. If the URI is not |
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| 122 | * in the URI space of this vocabulary, return the full URI. |
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| 123 | * |
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| 124 | * @param $uri string full URI of concept |
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| 125 | * @return string local name of concept, or original full URI if the local name cannot be determined |
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| 126 | */ |
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| 127 | public function getLocalName($uri) |
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| 131 | |||
| 132 | /** |
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| 133 | * Retrieves all the information about the Vocabulary |
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| 134 | * from the SPARQL-endpoint. |
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| 135 | */ |
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| 136 | public function getInfo($lang = null) |
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| 209 | |||
| 210 | /** |
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| 211 | * Return all concept schemes in the vocabulary. |
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| 212 | * @return array Array with concept scheme URIs (string) as keys and labels (string) as values |
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| 213 | */ |
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| 214 | |||
| 215 | public function getConceptSchemes($lang = '') |
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| 223 | |||
| 224 | /** |
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| 225 | * Return the URI of the default concept scheme of this vocabulary. If the skosmos:mainConceptScheme property is set in the |
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| 226 | * vocabulary configuration, that will be returned. Otherwise an arbitrary concept scheme will be returned. |
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| 227 | * @return string concept scheme URI |
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| 228 | */ |
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| 229 | |||
| 230 | public function getDefaultConceptScheme() |
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| 243 | |||
| 244 | /** |
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| 245 | * Returns the main Concept Scheme of that Vocabulary, or null if not set. |
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| 246 | * @param string $defaultConceptSchemeURI default concept scheme URI |
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| 247 | * @return \EasyRdf\Graph|mixed |
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| 248 | */ |
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| 249 | public function getConceptScheme(string $defaultConceptSchemeURI) |
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| 253 | |||
| 254 | /** |
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| 255 | * Return the top concepts of a concept scheme in the vocabulary. |
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| 256 | * @param string $conceptScheme URI of concept scheme whose top concepts to return. If not set, |
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| 257 | * the default concept scheme of the vocabulary will be used. |
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| 258 | * @param string $lang preferred language for the concept labels, |
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| 259 | * @return array Array with concept URIs (string) as keys and labels (string) as values |
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| 260 | */ |
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| 261 | |||
| 262 | public function getTopConcepts($conceptScheme = null, $lang = '') |
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| 275 | |||
| 276 | /** |
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| 277 | * Tries to parse version, date and time from sparql version information into a readable format. |
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| 278 | * @param string $version |
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| 279 | * @return string |
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| 280 | */ |
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| 281 | private function parseVersionInfo($version) |
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| 293 | |||
| 294 | /** |
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| 295 | * Counts the statistics of the vocabulary. |
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| 296 | * @return array of the concept/group counts |
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| 297 | */ |
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| 298 | public function getStatistics($lang = '', $array=null, $group=null) |
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| 304 | |||
| 305 | /** |
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| 306 | * Counts the statistics of the vocabulary. |
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| 307 | * @return array of the concept counts in different languages |
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| 308 | */ |
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| 309 | public function getLabelStatistics() |
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| 318 | |||
| 319 | /** |
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| 320 | * Gets the parent concepts of a concept and child concepts for all of those. |
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| 321 | * @param string $uri |
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| 322 | * @param string $lang language identifier. |
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| 323 | */ |
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| 324 | View Code Duplication | public function getConceptHierarchy($uri, $lang) |
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| 331 | |||
| 332 | /** |
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| 333 | * Gets the child relations of a concept and whether these children have more children. |
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| 334 | * @param string $uri |
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| 335 | */ |
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| 336 | View Code Duplication | public function getConceptChildren($uri, $lang) |
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| 343 | |||
| 344 | /** |
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| 345 | * Gets the skos:narrower relations of a concept. |
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| 346 | * @param string $uri |
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| 347 | * @param string $lang language identifier. |
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| 348 | */ |
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| 349 | public function getConceptNarrowers($uri, $lang) |
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| 354 | |||
| 355 | /** |
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| 356 | * Gets the skos:narrowerTransitive relations of a concept. |
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| 357 | * @param string $uri |
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| 358 | * @param integer $limit |
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| 359 | * @param string $lang language identifier. |
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| 360 | */ |
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| 361 | public function getConceptTransitiveNarrowers($uri, $limit, $lang) |
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| 366 | |||
| 367 | /** |
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| 368 | * Gets the skos:broader relations of a concept. |
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| 369 | * @param string $uri |
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| 370 | * @param string $lang language identifier. |
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| 371 | */ |
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| 372 | public function getConceptBroaders($uri, $lang) |
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| 377 | |||
| 378 | /** |
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| 379 | * Gets the skos:broaderTransitive relations of a concept. |
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| 380 | * @param string $uri |
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| 381 | * @param integer $limit |
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| 382 | * @param boolean $any set to true if you want to have a label even in case of a correct language one missing. |
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| 383 | * @param string $lang language identifier. |
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| 384 | */ |
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| 385 | public function getConceptTransitiveBroaders($uri, $limit, $any = false, $lang) |
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| 391 | |||
| 392 | /** |
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| 393 | * Gets all the skos:related concepts of a concept. |
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| 394 | * @param string $uri |
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| 395 | * @param string $lang language identifier. |
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| 396 | */ |
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| 397 | public function getConceptRelateds($uri, $lang) |
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| 402 | |||
| 403 | /** |
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| 404 | * Makes a query into the sparql endpoint for a concept. |
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| 405 | * @param string $uri the full URI of the concept |
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| 406 | * @return Concept[] |
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| 407 | */ |
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| 408 | public function getConceptInfo($uri, $clang) |
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| 414 | |||
| 415 | /** |
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| 416 | * Lists the different concept groups available in the vocabulary. |
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| 417 | * @param string $clang content language parameter |
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| 418 | * @return array |
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| 419 | */ |
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| 420 | public function listConceptGroups($clang = null) |
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| 439 | |||
| 440 | /** |
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| 441 | * Lists the concepts available in the concept group. |
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| 442 | * @param $clname |
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| 443 | * @return array |
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| 444 | */ |
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| 445 | public function listConceptGroupContents($glname, $clang) |
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| 465 | |||
| 466 | /** |
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| 467 | * Returns the letters of the alphabet which have been used in this vocabulary. |
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| 468 | * The returned letters may also include specials such as '0-9' (digits) and '!*' (special characters). |
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| 469 | * @param $clang content language |
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| 470 | * @return array array of letters |
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| 471 | */ |
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| 472 | public function getAlphabet($clang) |
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| 498 | |||
| 499 | /** |
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| 500 | * Searches for concepts with a label starting with the specified letter. |
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| 501 | * Also the special tokens '0-9' (digits), '!*' (special characters) and '*' |
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| 502 | * (everything) are supported. |
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| 503 | * @param $letter letter (or special token) to search for |
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| 504 | */ |
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| 505 | public function searchConceptsAlphabetical($letter, $limit = null, $offset = null, $clang = null) |
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| 509 | |||
| 510 | /** |
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| 511 | * Makes a query for the transitive broaders of a concept and returns the concepts hierarchy processed for the view. |
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| 512 | * @param string $lang |
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| 513 | * @param string $uri |
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| 514 | */ |
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| 515 | public function getBreadCrumbs($lang, $uri) |
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| 521 | |||
| 522 | /** |
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| 523 | * Takes the crumbs as a parameter and combines the crumbs if the path they form is too long. |
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| 524 | * @return array |
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| 525 | */ |
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| 526 | private function combineCrumbs($origCrumbs) |
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| 547 | |||
| 548 | /** |
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| 549 | * Recursive function for building the breadcrumb paths for the view. |
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| 550 | * @param array $bTresult contains the results of the broaderTransitive query. |
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| 551 | * @param string $uri |
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| 552 | * @param array $path |
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| 553 | */ |
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| 554 | private function getCrumbs($bTresult, $uri, $path = null) |
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| 593 | |||
| 594 | /** |
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| 595 | * Verify that the requested language is supported by the vocabulary. If not, returns |
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| 596 | * the default language of the vocabulary. |
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| 597 | * @param string $lang language to check |
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| 598 | * @return string language tag that is supported by the vocabulary |
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| 599 | */ |
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| 600 | |||
| 601 | public function verifyVocabularyLanguage($lang) |
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| 605 | |||
| 606 | /** |
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| 607 | * Returns a list of recently changed or entirely new concepts. |
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| 608 | * @param string $clang content language for the labels |
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| 609 | * @param string $lang UI language for the dates |
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| 610 | * @return Array |
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| 611 | */ |
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| 612 | public function getChangeList($prop, $clang, $lang, $offset) |
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| 622 | |||
| 623 | public function getTitle($lang=null) { |
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| 626 | |||
| 627 | public function getShortName() { |
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| 630 | |||
| 631 | public function getId() { |
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| 634 | |||
| 635 | public function getModifiedDate() |
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| 636 | { |
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| 637 | $modifiedDate = null; |
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| 638 | |||
| 639 | $conceptSchemeURI = $this->getDefaultConceptScheme(); |
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| 640 | if ($conceptSchemeURI) { |
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| 641 | $conceptSchemeGraph = $this->getConceptScheme($conceptSchemeURI); |
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| 642 | if (!$conceptSchemeGraph->isEmpty()) { |
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| 643 | $literal = $conceptSchemeGraph->getLiteral($conceptSchemeURI, "dc:modified"); |
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| 644 | if ($literal) { |
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| 645 | $modifiedDate = $literal->getValue(); |
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| 646 | } |
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| 647 | } |
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| 648 | } |
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| 649 | |||
| 650 | return $modifiedDate; |
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| 651 | } |
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| 652 | |||
| 653 | public function isUseModifiedDate() |
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| 657 | } |
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| 658 |
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It seems like the method you are trying to call exists only in some of the possible types.
Let’s take a look at an example:
Available Fixes
Add an additional type-check:
Only allow a single type to be passed if the variable comes from a parameter: