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:
| 1 | <?php  | 
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| 36 | abstract class OfferCommandHandler extends Udb3CommandHandler  | 
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| 37 | { | 
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| 38 | /**  | 
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| 39 | * @var RepositoryInterface  | 
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| 40 | */  | 
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| 41 | protected $offerRepository;  | 
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| 42 | |||
| 43 | /**  | 
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| 44 | * @var RepositoryInterface  | 
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| 45 | */  | 
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| 46 | protected $organizerRepository;  | 
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| 47 | |||
| 48 | /**  | 
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| 49 | * @var RepositoryInterface  | 
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| 50 | */  | 
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| 51 | protected $labelRepository;  | 
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| 52 | |||
| 53 | /**  | 
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| 54 | * @param RepositoryInterface $offerRepository  | 
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| 55 | * @param RepositoryInterface $organizerRepository  | 
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| 56 | * @param ReadRepositoryInterface $labelRepository  | 
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| 57 | */  | 
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| 58 | public function __construct(  | 
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| 67 | |||
| 68 | /**  | 
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| 69 |      * {@inheritdoc} | 
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| 70 | */  | 
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| 71 | public function handle($command)  | 
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| 83 | |||
| 84 | /**  | 
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| 85 | * @return string[]  | 
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| 86 | * An associative array of commands and their handler methods.  | 
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| 87 | */  | 
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| 88 | View Code Duplication | private function getCommandHandlers()  | 
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| 107 | |||
| 108 | /**  | 
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| 109 | * @return string  | 
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| 110 | */  | 
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| 111 | abstract protected function getAddLabelClassName();  | 
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| 112 | |||
| 113 | /**  | 
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| 114 | * @return string  | 
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| 115 | */  | 
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| 116 | abstract protected function getRemoveLabelClassName();  | 
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| 117 | |||
| 118 | /**  | 
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| 119 | * @return string  | 
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| 120 | */  | 
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| 121 | abstract protected function getTranslateTitleClassName();  | 
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| 122 | |||
| 123 | /**  | 
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| 124 | * @return string  | 
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| 125 | */  | 
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| 126 | abstract protected function getTranslateDescriptionClassName();  | 
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| 127 | |||
| 128 | /**  | 
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| 129 | * @return string  | 
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| 130 | */  | 
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| 131 | abstract protected function getAddImageClassName();  | 
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| 132 | |||
| 133 | /**  | 
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| 134 | * @return string  | 
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| 135 | */  | 
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| 136 | abstract protected function getUpdateImageClassName();  | 
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| 137 | |||
| 138 | /**  | 
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| 139 | * @return string  | 
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| 140 | */  | 
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| 141 | abstract protected function getRemoveImageClassName();  | 
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| 142 | |||
| 143 | /**  | 
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| 144 | * @return string  | 
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| 145 | */  | 
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| 146 | abstract protected function getSelectMainImageClassName();  | 
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| 147 | |||
| 148 | /**  | 
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| 149 | * @return string  | 
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| 150 | */  | 
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| 151 | abstract protected function getUpdateDescriptionClassName();  | 
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| 152 | |||
| 153 | /**  | 
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| 154 | * @return string  | 
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| 155 | */  | 
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| 156 | abstract protected function getUpdateTypicalAgeRangeClassName();  | 
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| 157 | |||
| 158 | /**  | 
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| 159 | * @return string  | 
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| 160 | */  | 
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| 161 | abstract protected function getDeleteTypicalAgeRangeClassName();  | 
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| 162 | |||
| 163 | /**  | 
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| 164 | * @return string  | 
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| 165 | */  | 
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| 166 | abstract protected function getUpdateOrganizerClassName();  | 
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| 167 | |||
| 168 | /**  | 
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| 169 | * @return string  | 
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| 170 | */  | 
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| 171 | abstract protected function getDeleteOrganizerClassName();  | 
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| 172 | |||
| 173 | /**  | 
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| 174 | * @return string  | 
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| 175 | */  | 
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| 176 | abstract protected function getUpdateContactPointClassName();  | 
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| 177 | |||
| 178 | /**  | 
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| 179 | * @return string  | 
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| 180 | */  | 
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| 181 | abstract protected function getUpdateBookingInfoClassName();  | 
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| 182 | |||
| 183 | /**  | 
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| 184 | * @return string  | 
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| 185 | */  | 
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| 186 | abstract protected function getUpdatePriceInfoClassName();  | 
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| 187 | |||
| 188 | /**  | 
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| 189 | * @return string  | 
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| 190 | */  | 
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| 191 | abstract protected function getDeleteOfferClassName();  | 
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| 192 | |||
| 193 | /**  | 
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| 194 | * @return string  | 
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| 195 | */  | 
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| 196 | abstract protected function getPublishClassName();  | 
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| 197 | |||
| 198 | /**  | 
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| 199 | * @return string  | 
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| 200 | */  | 
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| 201 | abstract protected function getApproveClassName();  | 
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| 202 | |||
| 203 | /**  | 
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| 204 | * @return string  | 
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| 205 | */  | 
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| 206 | abstract protected function getRejectClassName();  | 
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| 207 | |||
| 208 | /**  | 
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| 209 | * @return string  | 
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| 210 | */  | 
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| 211 | abstract protected function getFlagAsDuplicateClassName();  | 
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| 212 | |||
| 213 | /**  | 
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| 214 | * @return string  | 
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| 215 | */  | 
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| 216 | abstract protected function getFlagAsInappropriateClassName();  | 
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| 217 | |||
| 218 | /**  | 
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| 219 | * @param AbstractAddLabel $addLabel  | 
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| 220 | */  | 
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| 221 | private function handleAddLabel(AbstractAddLabel $addLabel)  | 
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| 229 | |||
| 230 | /**  | 
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| 231 | * @param AbstractRemoveLabel $removeLabel  | 
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| 232 | */  | 
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| 233 | private function handleRemoveLabel(AbstractRemoveLabel $removeLabel)  | 
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| 241 | |||
| 242 | /**  | 
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| 243 | * @param AbstractLabelCommand $labelCommand  | 
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| 244 | * @return Label  | 
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| 245 | */  | 
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| 246 | View Code Duplication | private function createLabel(AbstractLabelCommand $labelCommand)  | 
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| 256 | |||
| 257 | /**  | 
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| 258 | * @param AbstractTranslateTitle $translateTitle  | 
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| 259 | */  | 
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| 260 | private function handleTranslateTitle(AbstractTranslateTitle $translateTitle)  | 
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| 266 | |||
| 267 | /**  | 
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| 268 | * @param AbstractTranslateDescription $translateDescription  | 
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| 269 | */  | 
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| 270 | private function handleTranslateDescription(AbstractTranslateDescription $translateDescription)  | 
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| 276 | |||
| 277 | /**  | 
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| 278 | * Handle an add image command.  | 
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| 279 | * @param AbstractAddImage $addImage  | 
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| 280 | */  | 
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| 281 | public function handleAddImage(AbstractAddImage $addImage)  | 
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| 287 | |||
| 288 | /**  | 
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| 289 | * @param AbstractRemoveImage $removeImage  | 
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| 290 | */  | 
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| 291 | public function handleRemoveImage(AbstractRemoveImage $removeImage)  | 
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| 297 | |||
| 298 | /**  | 
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| 299 | * @param AbstractUpdateImage $updateImage  | 
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| 300 | */  | 
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| 301 | public function handleUpdateImage(AbstractUpdateImage $updateImage)  | 
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| 307 | |||
| 308 | /**  | 
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| 309 | * @param AbstractSelectMainImage $selectMainImage  | 
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| 310 | */  | 
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| 311 | public function handleSelectMainImage(AbstractSelectMainImage $selectMainImage)  | 
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| 317 | |||
| 318 | /**  | 
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| 319 | * Handle the update of description on a place.  | 
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| 320 | * @param AbstractUpdateDescription $updateDescription  | 
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| 321 | */  | 
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| 322 | public function handleUpdateDescription(AbstractUpdateDescription $updateDescription)  | 
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| 333 | |||
| 334 | /**  | 
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| 335 | * Handle the update of typical age range on a place.  | 
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| 336 | * @param AbstractUpdateTypicalAgeRange $updateTypicalAgeRange  | 
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| 337 | */  | 
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| 338 | public function handleUpdateTypicalAgeRange(AbstractUpdateTypicalAgeRange $updateTypicalAgeRange)  | 
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| 349 | |||
| 350 | /**  | 
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| 351 | * Handle the deletion of typical age range on a place.  | 
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| 352 | * @param AbstractDeleteTypicalAgeRange $deleteTypicalAgeRange  | 
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| 353 | */  | 
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| 354 | public function handleDeleteTypicalAgeRange(AbstractDeleteTypicalAgeRange $deleteTypicalAgeRange)  | 
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| 363 | |||
| 364 | /**  | 
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| 365 | * Handle an update command to update organizer of a place.  | 
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| 366 | * @param AbstractUpdateOrganizer $updateOrganizer  | 
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| 367 | */  | 
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| 368 | public function handleUpdateOrganizer(AbstractUpdateOrganizer $updateOrganizer)  | 
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| 379 | |||
| 380 | /**  | 
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| 381 | * Handle an update command to delete the organizer.  | 
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| 382 | * @param AbstractDeleteOrganizer $deleteOrganizer  | 
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| 383 | */  | 
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| 384 | public function handleDeleteOrganizer(AbstractDeleteOrganizer $deleteOrganizer)  | 
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| 394 | |||
| 395 | /**  | 
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| 396 | * Handle an update command to updated the contact point.  | 
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| 397 | * @param AbstractUpdateContactPoint $updateContactPoint  | 
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| 398 | */  | 
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| 399 | public function handleUpdateContactPoint(AbstractUpdateContactPoint $updateContactPoint)  | 
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| 410 | |||
| 411 | /**  | 
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| 412 | * Handle an update command to updated the booking info.  | 
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| 413 | * @param AbstractUpdateBookingInfo $updateBookingInfo  | 
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| 414 | */  | 
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| 415 | public function handleUpdateBookingInfo(AbstractUpdateBookingInfo $updateBookingInfo)  | 
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| 425 | |||
| 426 | /**  | 
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| 427 | * @param AbstractUpdatePriceInfo $updatePriceInfo  | 
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| 428 | */  | 
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| 429 | private function handleUpdatePriceInfo(AbstractUpdatePriceInfo $updatePriceInfo)  | 
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| 439 | |||
| 440 | /**  | 
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| 441 | * @param AbstractDeleteOffer $deleteOffer  | 
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| 442 | */  | 
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| 443 | private function handleDeleteOffer(AbstractDeleteOffer $deleteOffer)  | 
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| 449 | |||
| 450 | /**  | 
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| 451 | * @param AbstractPublish $publish  | 
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| 452 | */  | 
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| 453 | private function handlePublish(AbstractPublish $publish)  | 
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| 459 | |||
| 460 | /**  | 
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| 461 | * @param AbstractApprove $approve  | 
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| 462 | */  | 
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| 463 | private function handleApprove(AbstractApprove $approve)  | 
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| 469 | |||
| 470 | /**  | 
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| 471 | * @param AbstractReject $reject  | 
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| 472 | */  | 
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| 473 | private function handleReject(AbstractReject $reject)  | 
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| 479 | |||
| 480 | /**  | 
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| 481 | * @param AbstractFlagAsDuplicate $flagAsDuplicate  | 
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| 482 | */  | 
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| 483 | private function handleFlagAsDuplicate(AbstractFlagAsDuplicate $flagAsDuplicate)  | 
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| 489 | |||
| 490 | /**  | 
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| 491 | * @param AbstractFlagAsInappropriate $flagAsInappropriate  | 
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| 492 | */  | 
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| 493 | private function handleFlagAsInappropriate(AbstractFlagAsInappropriate $flagAsInappropriate)  | 
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| 499 | |||
| 500 | /**  | 
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| 501 | * Makes it easier to type-hint to Offer.  | 
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| 502 | *  | 
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| 503 | * @param string $id  | 
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| 504 | * @return Offer  | 
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| 505 | */  | 
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| 506 | private function load($id)  | 
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| 510 | |||
| 511 | /**  | 
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| 512 | * Makes it easier to type-hint to Organizer.  | 
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| 513 | *  | 
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| 514 | * @param string $id  | 
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| 515 | * @return Organizer  | 
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| 516 | */  | 
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| 517 | private function loadOrganizer($id)  | 
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| 522 | }  | 
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| 523 | 
Our type inference engine has found an assignment to a property that is incompatible with the declared type of that property.
Either this assignment is in error or the assigned type should be added to the documentation/type hint for that property..