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 $codiceRegione |
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30 | */ |
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31 | 3 | public function checkCodiceRegione($codiceRegione) |
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37 | |||
38 | /** |
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39 | * @param $codiceSSA |
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40 | */ |
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41 | public function checkCodiceSSA($codiceSSA) |
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47 | |||
48 | /** |
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49 | * @param $dateStr |
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50 | * |
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51 | * @return bool |
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52 | */ |
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53 | 3 | public function isoDateValidate($dateStr) |
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61 | |||
62 | /**+ |
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63 | * @param $arrVociSpesa |
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64 | */ |
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65 | public function checkArrVociSpesa($arrVociSpesa) |
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88 | |||
89 | /** |
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90 | * @param $arrSpesa |
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91 | */ |
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92 | public function checkArrSpesa($arrSpesa) |
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105 | |||
106 | /** |
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107 | * @param $pIva |
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108 | */ |
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109 | public function checkPIva($pIva) |
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120 | |||
121 | /** |
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122 | * @param $cfProprietario |
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123 | */ |
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124 | public function checkCfProprietario($cfProprietario) |
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135 | |||
136 | /** |
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137 | * @param $codiceAsl |
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138 | */ |
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139 | public function checkCodiceAsl($codiceAsl) |
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145 | |||
146 | /** |
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147 | * @param $campo |
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148 | * @param $valore |
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149 | */ |
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150 | private function checkDataValida($campo, $valore) |
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160 | |||
161 | /** |
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162 | * @param $valore |
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163 | */ |
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164 | private function checkTipoSpesa($valore) |
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170 | |||
171 | /** |
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172 | * @param $valore |
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173 | */ |
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174 | private function checkImporto($valore) |
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180 | |||
181 | /** |
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182 | * @param $valore |
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183 | * @param $campo |
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184 | */ |
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185 | private function checkRequiredField($valore, $campo) |
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191 | |||
192 | /** |
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193 | * @param $campo |
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194 | * @param $valore |
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195 | */ |
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196 | private function checkDataEmissione($campo, $valore) |
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200 | |||
201 | /** |
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202 | * @param $valore |
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203 | */ |
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204 | private function checkFlagOperazione($valore) |
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210 | |||
211 | /** |
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212 | * @param $valore |
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213 | */ |
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214 | private function checkCfCittadino($valore) |
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220 | |||
221 | /** |
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222 | * @param $valore |
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223 | */ |
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224 | private function checkDispositivo($valore) |
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230 | |||
231 | /** |
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232 | * @param $valore |
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233 | */ |
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234 | private function checkNumDocumento($valore) |
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240 | |||
241 | /** |
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242 | * @param $rigaSpesa |
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243 | */ |
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244 | private function checkRigaSpesa($rigaSpesa) |
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272 | } |
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273 |