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 Query 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 Query, and based on these observations, apply Extract Interface, too.
1 | <?php |
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44 | class Query |
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45 | { |
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46 | /** @var string */ |
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47 | private $query; |
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48 | /** @var int */ |
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49 | private $skip = 0; |
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50 | /** @var int */ |
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51 | private $pageSize = 10; |
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52 | /** @var string */ |
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53 | private $collection; |
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54 | /** @var string */ |
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55 | private $area; |
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56 | /** @var string */ |
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57 | private $biasingProfile; |
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58 | /** @var string */ |
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59 | private $language; |
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60 | /** @var MSort[] */ |
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61 | private $sort; |
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62 | /** @var CustomUrlParam[] */ |
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63 | private $customUrlParams = array(); |
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64 | /** @var Navigation[] */ |
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65 | private $navigations = array(); |
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66 | /** @var string[] */ |
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67 | private $includedNavigations = array(); |
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68 | /** @var string[] */ |
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69 | private $excludedNavigations = array(); |
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70 | /** @var string[] */ |
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71 | private $fields = array(); |
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72 | /** @var string[] */ |
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73 | private $orFields = array(); |
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74 | /** @var bool */ |
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75 | private $pruneRefinements = true; |
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76 | /** @var bool */ |
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77 | private $disableAutocorrection = false; |
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78 | /** @var bool */ |
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79 | private $wildcardSearchEnabled = false; |
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80 | // Removed until CBOR support for serialization / de-serialization improves |
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81 | // /** @var bool */ |
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82 | // private $returnBinary = false; |
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83 | /** @var RestrictNavigation */ |
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84 | private $restrictNavigation; |
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85 | /** @var MBiasing */ |
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86 | private $biasing; |
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87 | |||
88 | /** @var Serializer */ |
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89 | private $serializer; |
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90 | |||
91 | const TILDE_REGEX = "/~((?=[\\w]*[=:]))/"; |
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92 | |||
93 | /** |
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94 | * @param mixed $request |
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95 | * |
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96 | * @return string |
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97 | */ |
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98 | private function requestToJson($request) |
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109 | |||
110 | /** |
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111 | * @param string $clientKey Your client key. |
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112 | * |
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113 | * @return string JSON representation of request to Bridge. |
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114 | */ |
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115 | public function getBridgeJson($clientKey) |
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120 | |||
121 | /** |
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122 | * @param string $clientKey Your client key. |
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123 | * @param string $navigationName Name of the navigation to get refinements for |
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124 | * |
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125 | * @return string JSON representation of request to Bridge. |
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126 | */ |
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127 | public function getBridgeRefinementsJson($clientKey, $navigationName) |
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134 | |||
135 | /** |
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136 | * @param string $clientKey |
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137 | * |
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138 | * @return Request |
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139 | */ |
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140 | private function populateRequest($clientKey) |
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197 | |||
198 | /** |
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199 | * @param Navigation[] $navigations |
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200 | * |
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201 | * @return Refinement[] |
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202 | */ |
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203 | private function generateSelectedRefinements($navigations) |
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239 | |||
240 | /** |
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241 | * @param string $clientKey Your client key. |
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242 | * |
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243 | * @return string JSON representation of request to Bridge. |
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244 | */ |
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245 | public function getBridgeJsonRefinementSearch($clientKey) |
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260 | |||
261 | public function __construct() |
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265 | |||
266 | /** |
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267 | * @return string The current search string. |
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268 | */ |
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269 | public function getQuery() |
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273 | |||
274 | /** |
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275 | * @param string $query The search string. |
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276 | */ |
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277 | public function setQuery($query) |
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281 | |||
282 | /** |
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283 | * @return string The data sub-collection. |
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284 | */ |
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285 | public function getCollection() |
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289 | |||
290 | /** |
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291 | * @param string $collection The string representation of a collection query. |
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292 | */ |
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293 | public function setCollection($collection) |
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297 | |||
298 | /** |
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299 | * @return string The area name. |
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300 | */ |
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301 | public function getArea() |
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305 | |||
306 | /** |
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307 | * @param string $area The area name. |
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308 | */ |
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309 | public function setArea($area) |
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313 | |||
314 | /** |
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315 | * @return string[] A list of metadata fields that will be returned by the search engine. |
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316 | */ |
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317 | public function getFields() |
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321 | |||
322 | /** |
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323 | * @return string[] A list of the fields that the search service will treat as OR'able. |
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324 | */ |
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325 | public function getOrFields() |
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329 | |||
330 | /** |
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331 | * @param string[] $fields A list of case-sensitive names of the attributes to return. |
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332 | */ |
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333 | public function addFields($fields) |
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337 | |||
338 | /** |
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339 | * @return string[] A list of which navigations to return from the bridge. |
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340 | */ |
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341 | public function getIncludedNavigations() |
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345 | |||
346 | /** |
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347 | * @param string[] $navigations A list of which navigations to return from the bridge. |
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348 | */ |
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349 | public function addIncludedNavigations($navigations) |
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353 | |||
354 | /** |
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355 | * @return string[] A list of which navigations to not return from the bridge. |
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356 | */ |
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357 | public function getExcludedNavigations() |
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361 | |||
362 | /** |
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363 | * @param string[] $navigations A list of which navigations to not return from the bridge. |
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364 | */ |
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365 | public function addExcludedNavigations($navigations) |
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369 | |||
370 | /** |
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371 | * @return Navigation[] |
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372 | */ |
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373 | public function &getNavigations() |
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377 | |||
378 | /** |
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379 | * @param Navigation[] $navigations |
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380 | */ |
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381 | public function setNavigations($navigations) |
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385 | |||
386 | /** |
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387 | * @param string $name The case-sensitive name of the attribute to return. |
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388 | */ |
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389 | public function addField($name) |
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393 | |||
394 | /** |
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395 | * @param string $name Field that should be treated as OR. |
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396 | */ |
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397 | public function addOrField($name) |
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401 | |||
402 | /** |
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403 | * @param string[] $fields A list of fields that should be treated as OR. |
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404 | */ |
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405 | public function addOrFields($fields) |
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409 | |||
410 | /** |
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411 | * @param string $name The parameter name. |
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412 | * @param string $value The parameter value. |
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413 | */ |
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414 | public function addCustomUrlParamByName($name, $value) |
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419 | |||
420 | /** |
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421 | * @param CustomUrlParam $param Set an additional parameter that can be used to trigger rules. |
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422 | */ |
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423 | public function addCustomUrlParam($param) |
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427 | |||
428 | public function splitRefinements($refinementString) |
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435 | |||
436 | /** |
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437 | * @param string $refinementString A tilde separated list of refinements. |
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438 | */ |
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439 | public function addRefinementsByString($refinementString) |
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482 | |||
483 | /** |
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484 | * @param string $navigationName The name of the Navigation. |
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485 | * @param Refinement $refinement A RefinementRange or RefinementValue object. |
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486 | */ |
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487 | public function addRefinement($navigationName, $refinement) |
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501 | |||
502 | /** |
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503 | * @param string $navigationName The name of the refinement. |
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504 | * @param mixed $low The low value. |
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505 | * @param mixed $high The high value. |
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506 | * @param bool $exclude True if the results should exclude this range refinement, false otherwise. |
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507 | */ |
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508 | public function addRangeRefinement($navigationName, $low, $high, $exclude = false) |
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513 | |||
514 | /** |
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515 | * @param string $navigationName The name of the refinement. |
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516 | * @param mixed $value The refinement value. |
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517 | * @param bool $exclude True if the results should exclude this value refinement, false otherwise. |
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518 | */ |
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519 | public function addValueRefinement($navigationName, $value, $exclude = false) |
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524 | |||
525 | /** |
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526 | * @return bool Are refinements with zero counts being removed. |
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527 | */ |
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528 | public function isPruneRefinements() |
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532 | |||
533 | /** |
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534 | * @param bool $pruneRefinements Specifies whether refinements should be pruned. |
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535 | */ |
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536 | public function setPruneRefinements($pruneRefinements) |
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540 | |||
541 | /** |
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542 | * @return MSort[] The current list of sort parameters. |
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543 | */ |
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544 | public function &getSort() |
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548 | |||
549 | /** |
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550 | * @param MSort[] $sort Any number of sort criteria. |
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551 | */ |
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552 | public function setSort($sort) |
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556 | |||
557 | /** |
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558 | * @return int The number of documents to skip. |
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559 | */ |
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560 | public function getSkip() |
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564 | |||
565 | /** |
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566 | * @param int $skip The number of documents to skip. |
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567 | */ |
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568 | public function setSkip($skip) |
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572 | |||
573 | /** |
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574 | * @return CustomUrlParam[] A list of custom url params. |
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575 | */ |
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576 | public function getCustomUrlParams() |
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580 | |||
581 | /** |
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582 | * @param CustomUrlParam[] $customUrlParams Set the custom url params. |
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583 | */ |
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584 | public function setCustomUrlParams($customUrlParams) |
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588 | |||
589 | // /** |
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590 | // * @return bool Is return JSON set to true. |
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591 | // */ |
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592 | // public function isReturnBinary() |
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593 | // { |
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594 | // return $this->returnBinary; |
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595 | // } |
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596 | // |
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597 | // /** |
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598 | // * @param bool $returnBinary Whether to tell the bridge to return binary data rather than JSON. |
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599 | // */ |
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600 | // public function setReturnBinary($returnBinary) |
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601 | // { |
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602 | // $this->returnBinary = $returnBinary; |
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603 | // } |
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604 | |||
605 | /** |
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606 | * @return string The current language restrict value. |
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607 | */ |
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608 | public function getLanguage() |
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612 | |||
613 | /** |
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614 | * @param string $language The value for language restrict. |
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615 | */ |
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616 | public function setLanguage($language) |
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620 | |||
621 | /** |
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622 | * @return string The current biasing profile name. |
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623 | */ |
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624 | public function getBiasingProfile() |
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628 | |||
629 | /** |
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630 | * @param string $biasingProfile Override the biasing profile used for this query. |
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631 | */ |
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632 | public function setBiasingProfile($biasingProfile) |
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636 | |||
637 | /** |
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638 | * @return int The current page size. |
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639 | */ |
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640 | public function getPageSize() |
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644 | |||
645 | /** |
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646 | * @param int $pageSize The number of records to return with the query. |
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647 | */ |
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648 | public function setPageSize($pageSize) |
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652 | |||
653 | /** |
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654 | * @return boolean |
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655 | */ |
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656 | public function isDisableAutocorrection() |
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660 | |||
661 | /** |
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662 | * @param boolean $disableAutocorrection Specifies whether the auto-correction behavior should be disabled. |
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663 | * By default, when no results are returned for the given query (and there is |
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664 | * a did-you-mean available), the first did-you-mean is automatically queried |
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665 | * instead. |
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666 | */ |
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667 | public function setDisableAutocorrection($disableAutocorrection) |
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671 | |||
672 | /** |
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673 | * @return boolean |
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674 | */ |
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675 | public function isWildcardSearchEnabled() |
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679 | |||
680 | /** |
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681 | * @param boolean $wildcardSearchEnabled Indicate if the *(star) character in the search string should be treated |
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682 | * as a wildcard prefix search. For example, `sta*` will match `star` and |
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683 | * `start`. |
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684 | */ |
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685 | public function setWildcardSearchEnabled($wildcardSearchEnabled) |
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689 | |||
690 | /** |
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691 | * <b>Warning</b> This will count as two queries against your search index. |
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692 | * |
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693 | * Typically, this feature is used when you have a large number of navigation items that will overwhelm the end |
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694 | * user. It works by using one of the existing navigation items to decide what the query is about and fires a second |
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695 | * query to restrict the navigation to the most relevant set of navigation items for this search term. |
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696 | * |
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697 | * For example, if you pass in a search of `paper` and a restrict navigation of `category:2` |
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698 | * |
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699 | * The bridge will find the category navigation refinements in the first query and fire a second query for the top 2 |
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700 | * most populous categories. Therefore, a search for something generic like "paper" will bring back top category |
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701 | * matches like copy paper (1,030), paper pads (567). The bridge will fire off the second query with the search |
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702 | * term, plus an OR refinement with the most likely categories. The navigation items in the first query are |
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703 | * entirely replaced with the navigation items in the second query, except for the navigation that was used for the |
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704 | * restriction so that users still have the ability to navigate by all category types. |
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705 | * |
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706 | * @param RestrictNavigation $restrictNavigation Restriction criteria |
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707 | */ |
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708 | public function setRestrictNavigation($restrictNavigation) |
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712 | |||
713 | /** @return RestrictNavigation */ |
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714 | public function getRestrictNavigation() |
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718 | |||
719 | /** |
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720 | * @return MBiasing |
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721 | */ |
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722 | public function getBiasing() |
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726 | |||
727 | /** |
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728 | * Add a biasing profile, which is defined at query time. |
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729 | * |
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730 | * @param MBiasing $biasing |
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731 | */ |
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732 | public function setBiasing($biasing) |
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736 | |||
737 | /** |
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738 | * @param string[] $bringToTop |
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739 | */ |
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740 | public function setBringToTop($bringToTop) { |
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746 | |||
747 | /** |
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748 | * @param boolean $augment |
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749 | */ |
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750 | public function setBiasingAugment($augment) { |
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756 | |||
757 | /** |
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758 | * @param float $influence |
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759 | */ |
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760 | public function setInfluence($influence) { |
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766 | |||
767 | /** |
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768 | * @return string A string representation of all of the currently set refinements. |
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769 | */ |
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770 | View Code Duplication | public function getRefinementString() |
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785 | |||
786 | /** |
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787 | * @return string A string representation of all of the currently set custom url parameters. |
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788 | */ |
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789 | View Code Duplication | public function getCustomUrlParamsString() |
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802 | |||
803 | /** |
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804 | * @param MSort $sort |
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805 | * |
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806 | * @return RSort |
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807 | */ |
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808 | protected static function convertSort($sort) |
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826 | |||
827 | /** |
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828 | * @param MMatchStrategy $strategy |
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829 | * |
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830 | * @return RMatchStrategy |
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831 | */ |
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832 | protected static function convertPartialMatchStrategy($strategy) |
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849 | |||
850 | /** |
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851 | * @param MPartialMatchRule $rule |
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852 | * |
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853 | * @return RPartialMatchRule |
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854 | */ |
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855 | protected static function convertPartialMatchRule($rule) |
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868 | |||
869 | /** |
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870 | * @param MBias $bias |
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871 | * |
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872 | * @return Bias |
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873 | */ |
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874 | protected static function convertBias($bias) |
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878 | |||
879 | /** |
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880 | * @param MBias[] $biases |
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881 | * |
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882 | * @return Bias[] |
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883 | */ |
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884 | protected static function convertBiases($biases) |
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888 | |||
889 | /** |
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890 | * @param MBiasing $biasing |
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891 | * |
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892 | * @return Biasing |
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893 | */ |
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894 | protected static function convertBiasing($biasing) |
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920 | |||
921 | } |
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922 |