Complex classes like Criteriable 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 Criteriable, and based on these observations, apply Extract Interface, too.
1 | <?php |
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12 | trait Criteriable |
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13 | { |
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14 | /** |
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15 | * List of repository criteria. |
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16 | * |
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17 | * @var array |
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18 | */ |
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19 | protected $criteria = []; |
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20 | |||
21 | /** |
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22 | * List of default repository criteria. |
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23 | * |
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24 | * @var array |
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25 | */ |
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26 | protected $defaultCriteria = []; |
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27 | |||
28 | /** |
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29 | * Skip criteria flag. |
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30 | * If setted to true criteria will not be apply to the query. |
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31 | * |
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32 | * @var bool |
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33 | */ |
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34 | protected $skipCriteria = false; |
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35 | |||
36 | /** |
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37 | * Skip default criteria flag. |
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38 | * If setted to true default criteria will not be added to the criteria list. |
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39 | * |
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40 | * @var bool |
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41 | */ |
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42 | protected $skipDefaultCriteria = false; |
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43 | |||
44 | /** |
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45 | * Return name for the criterion. |
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46 | * If as criterion in parameter passed string we assume that is criterion class name. |
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47 | * |
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48 | * @param CriterionContract|Closure|string $criteria |
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49 | * |
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50 | * @return string |
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51 | */ |
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52 | public function getCriterionName($criteria) |
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60 | |||
61 | /** |
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62 | * Try to instantiate given criterion class name with this arguments. |
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63 | * |
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64 | * @param $class |
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65 | * @param $arguments |
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66 | * |
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67 | * @throws CriterionException |
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68 | * |
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69 | * @return mixed |
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70 | */ |
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71 | protected function instantiateCriterion($class, $arguments) |
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90 | |||
91 | /** |
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92 | * Return class and arguments from passed array criterion. |
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93 | * Extracting class and arguments from array. |
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94 | * |
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95 | * @param array $criterion |
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96 | * |
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97 | * @throws CriterionException |
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98 | * |
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99 | * @return array |
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100 | */ |
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101 | protected function extractCriterionClassAndArgs(array $criterion) |
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119 | |||
120 | /** |
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121 | * Add criterion to the specific list. |
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122 | * low-level implementation of adding criterion to the list. |
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123 | * |
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124 | * @param Closure|CriterionContract|array|string $criterion |
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125 | * @param string $list |
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126 | * |
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127 | * @throws CriterionException |
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128 | * @throws RepositoryException |
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129 | * |
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130 | * @return $this |
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131 | */ |
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132 | protected function addCriterion($criterion, $list) |
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162 | |||
163 | /** |
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164 | * Add criteria to the specific list |
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165 | * low-level implementation of adding criteria to the list. |
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166 | * |
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167 | * @param array $criteria |
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168 | * @param $list |
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169 | */ |
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170 | protected function addCriteria(array $criteria, $list) |
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177 | |||
178 | /** |
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179 | * Push criterion to the criteria list. |
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180 | * |
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181 | * @param CriterionContract|Closure|array|string $criterion |
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182 | * |
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183 | * @return $this |
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184 | */ |
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185 | public function pushCriterion($criterion) |
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191 | |||
192 | /** |
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193 | * Remove provided criterion from criteria list. |
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194 | * |
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195 | * @param CriterionContract|Closure|string $criterion |
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196 | * |
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197 | * @return $this |
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198 | */ |
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199 | public function removeCriterion($criterion) |
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205 | |||
206 | /** |
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207 | * Remove provided criteria from criteria list. |
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208 | * |
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209 | * @param array $criteria |
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210 | * |
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211 | * @return RepositoryContract |
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212 | */ |
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213 | public function removeCriteria(array $criteria) |
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221 | |||
222 | /** |
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223 | * Push array of criteria to the criteria list. |
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224 | * |
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225 | * @param array $criteria |
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226 | * |
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227 | * @return $this |
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228 | */ |
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229 | public function pushCriteria(array $criteria) |
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235 | |||
236 | /** |
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237 | * Flush criteria list. |
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238 | * We can flush criteria only when they is not skipped. |
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239 | * |
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240 | * @return $this |
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241 | */ |
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242 | public function flushCriteria() |
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250 | |||
251 | /** |
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252 | * Set default criteria list. |
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253 | * |
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254 | * @param array $criteria |
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255 | * |
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256 | * @return $this |
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257 | */ |
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258 | public function setDefaultCriteria(array $criteria) |
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264 | |||
265 | /** |
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266 | * Return default criteria list. |
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267 | * |
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268 | * @return array |
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269 | */ |
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270 | public function getDefaultCriteria() |
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274 | |||
275 | /** |
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276 | * Return current list of criteria. |
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277 | * |
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278 | * @return array |
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279 | */ |
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280 | public function getCriteria() |
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288 | |||
289 | /** |
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290 | * Set skipCriteria flag. |
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291 | * |
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292 | * @param bool|true $flag |
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293 | * |
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294 | * @return $this |
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295 | */ |
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296 | public function skipCriteria($flag = true) |
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302 | |||
303 | /** |
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304 | * Set skipDefaultCriteria flag. |
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305 | * |
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306 | * @param bool|true $flag |
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307 | * |
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308 | * @return $this |
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309 | */ |
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310 | public function skipDefaultCriteria($flag = true) |
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316 | |||
317 | /** |
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318 | * Check if a given criterion name now in the criteria list. |
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319 | * |
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320 | * @param CriterionContract|Closure|string $criterion |
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321 | * |
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322 | * @return bool |
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323 | */ |
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324 | public function hasCriterion($criterion) |
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328 | |||
329 | /** |
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330 | * Return criterion object or closure from criteria list by name. |
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331 | * |
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332 | * @param $criterion |
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333 | * |
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334 | * @return CriterionContract|Closure|null |
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335 | */ |
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336 | public function getCriterion($criterion) |
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342 | |||
343 | /** |
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344 | * Apply criteria list to the given query. |
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345 | * |
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346 | * @param $query |
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347 | * @param $repository |
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348 | * |
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349 | * @return mixed |
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350 | */ |
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351 | public function applyCriteria($query, $repository) |
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363 | } |
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364 |
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.