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 ValidateHelper 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 ValidateHelper, and based on these observations, apply Extract Interface, too.
1 | <?php |
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8 | class ValidateHelper |
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9 | { |
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10 | use traits\Errorable; |
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11 | |||
12 | private $objPartitaIVA = null; |
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13 | private $objCFChecker = null; |
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14 | |||
15 | /**+ |
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16 | * ValidateHelper constructor. |
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17 | * |
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18 | * @param \fdisotto\PartitaIVA $objPartitaIVA |
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19 | * @param \CodiceFiscale\Checker $objCFChecker |
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20 | */ |
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21 | 6 | public function __construct(\fdisotto\PartitaIVA $objPartitaIVA, \CodiceFiscale\Checker $objCFChecker) |
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27 | |||
28 | /** |
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29 | * @param $codice |
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30 | * @param $codice_nome |
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31 | * @param array $arrCodiciValidi |
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32 | * @param $codice_len |
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33 | */ |
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34 | 3 | public function checkCodice($codice, $codice_nome, array $arrCodiciValidi, $codice_len) |
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48 | |||
49 | /** |
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50 | * @param $codiceRegione |
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51 | */ |
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52 | 3 | public function checkCodiceRegione($codiceRegione) |
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56 | |||
57 | /** |
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58 | * @param $codiceSSA |
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59 | */ |
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60 | public function checkCodiceSSA($codiceSSA) |
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64 | |||
65 | /** |
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66 | * @param $dateStr |
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67 | * |
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68 | * @return bool |
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69 | */ |
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70 | 3 | public function isoDateValidate($dateStr) |
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78 | |||
79 | /**+ |
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80 | * @param $arrVociSpesa |
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81 | */ |
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82 | public function checkArrVociSpesa($arrVociSpesa) |
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107 | |||
108 | /** |
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109 | * @param $arrSpesa |
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110 | */ |
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111 | public function checkArrSpesa($arrSpesa) |
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130 | |||
131 | /** |
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132 | * @param $pIva |
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133 | */ |
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134 | public function checkPIva($pIva) |
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145 | |||
146 | /** |
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147 | * @param $cfProprietario |
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148 | */ |
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149 | public function checkCfProprietario($cfProprietario) |
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160 | |||
161 | /** |
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162 | * @param $codiceAsl |
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163 | */ |
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164 | public function checkCodiceAsl($codiceAsl) |
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168 | |||
169 | /** |
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170 | * @param $campo |
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171 | * @param $valore |
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172 | */ |
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173 | private function checkDataValida($campo, $valore) |
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183 | |||
184 | /** |
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185 | * @param $valore |
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186 | * @param $arrTipiSpesaPermessi |
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187 | */ |
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188 | private function checkTipoSpesa($valore, $arrTipiSpesaPermessi) |
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194 | |||
195 | /** |
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196 | * @param $valore |
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197 | */ |
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198 | private function checkImporto($valore) |
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204 | |||
205 | /** |
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206 | * @param $valore |
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207 | * @param $campo |
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208 | */ |
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209 | private function checkRequiredField($valore, $campo) |
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215 | |||
216 | /** |
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217 | * @param $campo |
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218 | * @param $valore |
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219 | */ |
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220 | private function checkDataEmissione($campo, $valore) |
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224 | |||
225 | /** |
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226 | * @param $valore |
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227 | * @param $arrFlagOperazione |
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228 | */ |
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229 | private function checkFlagOperazione($valore, $arrFlagOperazione) |
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235 | |||
236 | /** |
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237 | * @param $valore |
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238 | */ |
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239 | private function checkCfCittadino($valore) |
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245 | |||
246 | /** |
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247 | * @param $valore |
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248 | */ |
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249 | private function checkDispositivo($valore) |
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255 | |||
256 | /** |
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257 | * @param $valore |
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258 | */ |
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259 | private function checkNumDocumento($valore) |
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265 | |||
266 | /** |
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267 | * @param $rigaSpesa |
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268 | * @param $arrFlagOperazione |
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269 | */ |
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270 | private function checkRigaSPesa($rigaSpesa, $arrFlagOperazione) |
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294 | |||
295 | } |
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296 |