Complex classes like SearchRequest 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 SearchRequest, and based on these observations, apply Extract Interface, too.
1 | <?php |
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31 | class SearchRequest implements \JsonSerializable { |
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32 | |||
33 | /** @var array */ |
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34 | private $providers; |
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35 | |||
36 | /** @var string */ |
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37 | private $search; |
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38 | |||
39 | /** @var int */ |
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40 | private $page = 1; |
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41 | |||
42 | /** @var int */ |
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43 | private $size = 10; |
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44 | |||
45 | /** @var string */ |
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46 | private $author; |
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47 | |||
48 | /** @var array */ |
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49 | private $tags; |
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50 | |||
51 | /** @var array */ |
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52 | private $options; |
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53 | |||
54 | /** @var array */ |
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55 | private $parts = []; |
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56 | |||
57 | /** @var array */ |
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58 | private $fields = []; |
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59 | |||
60 | /** @var array */ |
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61 | private $wildcardQueries = []; |
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62 | |||
63 | /** @var array */ |
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64 | private $wildcardFilters = []; |
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65 | |||
66 | /** @var array */ |
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67 | private $regexFilters = []; |
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68 | |||
69 | |||
70 | /** |
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71 | * SearchRequest constructor. |
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72 | */ |
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73 | public function __construct() { |
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75 | |||
76 | |||
77 | /** |
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78 | * @return array |
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79 | */ |
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80 | public function getProviders() { |
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83 | |||
84 | /** |
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85 | * @param string|array $providers |
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86 | */ |
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87 | public function setProviders($providers) { |
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94 | |||
95 | |||
96 | /** |
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97 | * @return string |
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98 | */ |
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99 | public function getAuthor() { |
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102 | |||
103 | /** |
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104 | * @param string $author |
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105 | */ |
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106 | public function setAuthor($author) { |
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109 | |||
110 | |||
111 | /** |
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112 | * @return string |
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113 | */ |
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114 | public function getSearch() { |
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117 | |||
118 | /** |
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119 | * @param string $search |
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120 | */ |
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121 | public function setSearch($search) { |
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124 | |||
125 | |||
126 | public function cleanSearch() { |
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141 | |||
142 | |||
143 | /** |
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144 | * @param $word |
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145 | * |
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146 | * @return bool |
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147 | */ |
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148 | private function searchQueryOptions($word) { |
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164 | |||
165 | |||
166 | /** |
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167 | * @return int |
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168 | */ |
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169 | public function getPage() { |
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172 | |||
173 | /** |
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174 | * @param int $page |
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175 | */ |
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176 | public function setPage($page) { |
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183 | |||
184 | |||
185 | /** |
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186 | * @return int |
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187 | */ |
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188 | public function getSize() { |
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191 | |||
192 | /** |
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193 | * @param int $size |
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194 | */ |
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195 | public function setSize($size) { |
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198 | |||
199 | |||
200 | /** |
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201 | * @return array |
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202 | */ |
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203 | public function getOptions() { |
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206 | |||
207 | /** |
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208 | * @param array $options |
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209 | */ |
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210 | public function setOptions($options) { |
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213 | |||
214 | /** |
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215 | * @param $key |
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216 | * @param $value |
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217 | * |
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218 | * @return $this |
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219 | */ |
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220 | public function addOption($key, $value) { |
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225 | |||
226 | /** |
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227 | * @param string $option |
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228 | * |
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229 | * @return mixed|string |
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230 | */ |
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231 | public function getOption($option) { |
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238 | |||
239 | |||
240 | /** |
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241 | * @param array $parts |
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242 | * |
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243 | * @return $this |
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244 | */ |
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245 | public function setParts($parts) { |
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250 | |||
251 | /** |
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252 | * @return array |
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253 | */ |
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254 | public function getParts() { |
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257 | |||
258 | |||
259 | /** |
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260 | * @return array |
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261 | */ |
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262 | public function getFields() { |
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265 | |||
266 | /** |
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267 | * @param array $fields |
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268 | * |
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269 | * @return $this |
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270 | */ |
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271 | public function setFields($fields) { |
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276 | |||
277 | /** |
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278 | * @param $field |
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279 | * |
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280 | * @return $this |
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281 | */ |
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282 | public function addField($field) { |
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287 | |||
288 | |||
289 | /** |
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290 | * @param string $tag |
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291 | */ |
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292 | public function addTag($tag) { |
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295 | |||
296 | /** |
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297 | * @return array |
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298 | */ |
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299 | public function getTags() { |
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302 | |||
303 | /** |
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304 | * @param array $tags |
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305 | */ |
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306 | public function setTags($tags) { |
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309 | |||
310 | |||
311 | /** |
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312 | * @param array $query |
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313 | * |
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314 | * @return $this |
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315 | */ |
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316 | public function addWildcardQuery($query) { |
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321 | |||
322 | /** |
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323 | * @param array $query |
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324 | * |
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325 | * @return $this |
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326 | */ |
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327 | public function addWildcardQueries($query) { |
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332 | |||
333 | /** |
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334 | * @return array |
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335 | */ |
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336 | public function getWildcardQueries() { |
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339 | |||
340 | |||
341 | /** |
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342 | * @param array $filter |
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343 | * |
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344 | * @return $this |
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345 | */ |
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346 | public function addWildcardFilter($filter) { |
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351 | |||
352 | /** |
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353 | * @param array $filters |
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354 | * |
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355 | * @return $this |
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356 | */ |
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357 | public function addWildcardFilters($filters) { |
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362 | |||
363 | /** |
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364 | * @return array |
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365 | */ |
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366 | public function getWildcardFilters() { |
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369 | |||
370 | |||
371 | /** |
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372 | * @param array $filter |
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373 | * |
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374 | * @return $this |
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375 | */ |
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376 | public function addRegexFilter($filter) { |
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381 | |||
382 | /** |
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383 | * @param array $filters |
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384 | * |
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385 | * @return $this |
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386 | */ |
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387 | public function addRegexFilters($filters) { |
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392 | |||
393 | /** |
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394 | * @return array |
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395 | */ |
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396 | public function getRegexFilters() { |
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399 | |||
400 | |||
401 | /** |
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402 | * @return array |
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403 | */ |
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404 | public function jsonSerialize() { |
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416 | |||
417 | |||
418 | /** |
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419 | * @param string $json |
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420 | * |
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421 | * @return SearchRequest |
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422 | */ |
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423 | public static function fromJSON($json) { |
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426 | |||
427 | /** |
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428 | * @param array $arr |
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429 | * |
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430 | * @return SearchRequest |
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431 | */ |
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432 | public static function fromArray($arr) { |
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445 | |||
446 | |||
447 | } |
This check looks for the generic type
array
as a return type and suggests a more specific type. This type is inferred from the actual code.