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 ExceptionConversion 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 ExceptionConversion, and based on these observations, apply Extract Interface, too.
1 | <?php |
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29 | class ExceptionConversion extends Gateway |
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30 | { |
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31 | /** |
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32 | * The wrapped gateway. |
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33 | * |
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34 | * @var Gateway |
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35 | */ |
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36 | protected $innerGateway; |
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37 | |||
38 | /** |
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39 | * Creates a new exception conversion gateway around $innerGateway. |
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40 | * |
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41 | * @param Gateway $innerGateway |
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42 | */ |
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43 | public function __construct(Gateway $innerGateway) |
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47 | |||
48 | /** |
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49 | * Get context definition for external storage layers. |
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50 | * |
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51 | * @return array |
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52 | */ |
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53 | public function getContext() |
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63 | |||
64 | /** |
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65 | * Inserts a new content object. |
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66 | * |
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67 | * @param \eZ\Publish\SPI\Persistence\Content\CreateStruct $struct |
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68 | * @param mixed $currentVersionNo |
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69 | * |
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70 | * @return int ID |
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71 | */ |
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72 | public function insertContentObject(CreateStruct $struct, $currentVersionNo = 1) |
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82 | |||
83 | /** |
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84 | * Inserts a new version. |
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85 | * |
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86 | * @param \eZ\Publish\SPI\Persistence\Content\VersionInfo $versionInfo |
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87 | * @param \eZ\Publish\SPI\Persistence\Content\Field[] $fields |
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88 | * |
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89 | * @return int ID |
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90 | */ |
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91 | public function insertVersion(VersionInfo $versionInfo, array $fields) |
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101 | |||
102 | /** |
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103 | * Updates an existing content identified by $contentId in respect to $struct. |
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104 | * |
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105 | * @param int $contentId |
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106 | * @param \eZ\Publish\SPI\Persistence\Content\MetadataUpdateStruct $struct |
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107 | * @param \eZ\Publish\SPI\Persistence\Content\VersionInfo $prePublishVersionInfo Provided on publish |
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108 | */ |
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109 | public function updateContent($contentId, MetadataUpdateStruct $struct, VersionInfo $prePublishVersionInfo = null) |
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119 | |||
120 | /** |
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121 | * Updates version $versionNo for content identified by $contentId, in respect to $struct. |
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122 | * |
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123 | * @param int $contentId |
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124 | * @param int $versionNo |
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125 | * @param \eZ\Publish\SPI\Persistence\Content\UpdateStruct $struct |
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126 | */ |
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127 | public function updateVersion($contentId, $versionNo, UpdateStruct $struct) |
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137 | |||
138 | /** |
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139 | * Updates "always available" flag for content identified by $contentId, in respect to $alwaysAvailable. |
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140 | * |
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141 | * @param int $contentId |
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142 | * @param bool $newAlwaysAvailable New "always available" value |
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143 | */ |
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144 | public function updateAlwaysAvailableFlag($contentId, $newAlwaysAvailable) |
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154 | |||
155 | /** |
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156 | * Sets the state of object identified by $contentId and $version to $state. |
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157 | * |
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158 | * The $status can be one of STATUS_DRAFT, STATUS_PUBLISHED, STATUS_ARCHIVED |
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159 | * |
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160 | * @param int $contentId |
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161 | * @param int $version |
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162 | * @param int $status |
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163 | * |
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164 | * @return bool |
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165 | */ |
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166 | public function setStatus($contentId, $version, $status) |
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176 | |||
177 | /** |
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178 | * Inserts a new field. |
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179 | * |
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180 | * Only used when a new field is created (i.e. a new object or a field in a |
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181 | * new language!). After that, field IDs need to stay the same, only the |
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182 | * version number changes. |
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183 | * |
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184 | * @param \eZ\Publish\SPI\Persistence\Content $content |
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185 | * @param \eZ\Publish\SPI\Persistence\Content\Field $field |
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186 | * @param \eZ\Publish\Core\Persistence\Legacy\Content\StorageFieldValue $value |
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187 | * |
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188 | * @return int ID |
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189 | */ |
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190 | View Code Duplication | public function insertNewField(Content $content, Field $field, StorageFieldValue $value) |
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200 | |||
201 | /** |
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202 | * Inserts an existing field. |
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203 | * |
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204 | * Used to insert a field with an exsting ID but a new version number. |
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205 | * |
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206 | * @param Content $content |
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207 | * @param Field $field |
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208 | * @param StorageFieldValue $value |
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209 | */ |
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210 | View Code Duplication | public function insertExistingField(Content $content, Field $field, StorageFieldValue $value) |
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220 | |||
221 | /** |
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222 | * Updates an existing field. |
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223 | * |
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224 | * @param Field $field |
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225 | * @param StorageFieldValue $value |
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226 | */ |
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227 | View Code Duplication | public function updateField(Field $field, StorageFieldValue $value) |
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237 | |||
238 | /** |
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239 | * Updates an existing, non-translatable field. |
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240 | * |
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241 | * @param \eZ\Publish\SPI\Persistence\Content\Field $field |
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242 | * @param \eZ\Publish\Core\Persistence\Legacy\Content\StorageFieldValue $value |
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243 | * @param int $contentId |
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244 | */ |
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245 | View Code Duplication | public function updateNonTranslatableField( |
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258 | |||
259 | /** |
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260 | * Loads data for a content object. |
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261 | * |
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262 | * Returns an array with the relevant data. |
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263 | * |
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264 | * @param mixed $contentId |
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265 | * @param mixed $version |
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266 | * @param string[] $translations |
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267 | * |
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268 | * @return array |
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269 | */ |
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270 | public function load($contentId, $version, array $translations = null) |
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280 | |||
281 | /** |
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282 | * Loads data for a content object identified by its remote ID. |
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283 | * |
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284 | * Returns an array with the relevant data. |
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285 | * |
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286 | * @param mixed $remoteId |
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287 | * |
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288 | * @return array |
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289 | */ |
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290 | public function loadContentInfoByRemoteId($remoteId) |
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300 | |||
301 | /** |
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302 | * Loads info for content identified by $contentId. |
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303 | * Will basically return a hash containing all field values for ezcontentobject table plus following keys: |
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304 | * - always_available => Boolean indicating if content's language mask contains alwaysAvailable bit field |
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305 | * - main_language_code => Language code for main (initial) language. E.g. "eng-GB". |
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306 | * |
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307 | * @param int $contentId |
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308 | * |
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309 | * @throws \eZ\Publish\Core\Base\Exceptions\NotFoundException |
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310 | * |
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311 | * @return array |
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312 | */ |
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313 | public function loadContentInfo($contentId) |
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323 | |||
324 | /** |
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325 | * Loads version info for content identified by $contentId and $versionNo. |
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326 | * Will basically return a hash containing all field values from ezcontentobject_version table plus following keys: |
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327 | * - names => Hash of content object names. Key is the language code, value is the name. |
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328 | * - languages => Hash of language ids. Key is the language code (e.g. "eng-GB"), value is the language numeric id without the always available bit. |
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329 | * - initial_language_code => Language code for initial language in this version. |
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330 | * |
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331 | * @param int $contentId |
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332 | * @param int $versionNo |
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333 | * |
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334 | * @return array |
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335 | */ |
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336 | public function loadVersionInfo($contentId, $versionNo) |
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346 | |||
347 | /** |
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348 | * Returns data for all versions with given status created by the given $userId. |
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349 | * |
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350 | * @param int $userId |
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351 | * @param int $status |
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352 | * |
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353 | * @return string[][] |
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354 | */ |
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355 | public function listVersionsForUser($userId, $status = VersionInfo::STATUS_DRAFT) |
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365 | |||
366 | /** |
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367 | * Returns all version data for the given $contentId. |
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368 | * |
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369 | * @param mixed $contentId |
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370 | * |
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371 | * @return string[][] |
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372 | */ |
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373 | public function listVersions($contentId) |
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383 | |||
384 | /** |
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385 | * Returns all version numbers for the given $contentId. |
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386 | * |
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387 | * @param mixed $contentId |
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388 | * |
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389 | * @return int[] |
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390 | */ |
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391 | public function listVersionNumbers($contentId) |
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401 | |||
402 | /** |
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403 | * Returns last version number for content identified by $contentId. |
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404 | * |
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405 | * @param int $contentId |
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406 | * |
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407 | * @return int |
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408 | */ |
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409 | public function getLastVersionNumber($contentId) |
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419 | |||
420 | /** |
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421 | * Returns all IDs for locations that refer to $contentId. |
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422 | * |
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423 | * @param int $contentId |
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424 | * |
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425 | * @return int[] |
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426 | */ |
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427 | public function getAllLocationIds($contentId) |
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437 | |||
438 | /** |
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439 | * Returns all field IDs of $contentId grouped by their type. |
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440 | * If $versionNo is set only field IDs for that version are returned. |
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441 | * |
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442 | * @param int $contentId |
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443 | * @param int|null $versionNo |
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444 | * |
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445 | * @return int[][] |
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446 | */ |
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447 | public function getFieldIdsByType($contentId, $versionNo = null) |
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457 | |||
458 | /** |
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459 | * Deletes relations to and from $contentId. |
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460 | * If $versionNo is set only relations for that version are deleted. |
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461 | * |
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462 | * @param int $contentId |
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463 | * @param int|null $versionNo |
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464 | */ |
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465 | public function deleteRelations($contentId, $versionNo = null) |
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475 | |||
476 | /** |
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477 | * Removes relations to Content with $contentId from Relation and RelationList field type fields. |
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478 | * |
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479 | * @param int $contentId |
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480 | */ |
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481 | public function removeReverseFieldRelations($contentId) |
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491 | |||
492 | /** |
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493 | * Deletes the field with the given $fieldId. |
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494 | * |
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495 | * @param int $fieldId |
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496 | */ |
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497 | public function deleteField($fieldId) |
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507 | |||
508 | /** |
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509 | * Deletes all fields of $contentId in all versions. |
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510 | * If $versionNo is set only fields for that version are deleted. |
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511 | * |
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512 | * @param int $contentId |
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513 | * @param int|null $versionNo |
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514 | */ |
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515 | public function deleteFields($contentId, $versionNo = null) |
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525 | |||
526 | /** |
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527 | * Deletes all versions of $contentId. |
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528 | * If $versionNo is set only that version is deleted. |
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529 | * |
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530 | * @param int $contentId |
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531 | * @param int|null $versionNo |
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532 | */ |
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533 | public function deleteVersions($contentId, $versionNo = null) |
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543 | |||
544 | /** |
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545 | * Deletes all names of $contentId. |
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546 | * If $versionNo is set only names for that version are deleted. |
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547 | * |
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548 | * @param int $contentId |
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549 | * @param int|null $versionNo |
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550 | */ |
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551 | public function deleteNames($contentId, $versionNo = null) |
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561 | |||
562 | /** |
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563 | * Sets the content object name. |
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564 | * |
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565 | * @param int $contentId |
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566 | * @param int $version |
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567 | * @param string $name |
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568 | * @param string $language |
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569 | */ |
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570 | public function setName($contentId, $version, $name, $language) |
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580 | |||
581 | /** |
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582 | * Deletes the actual content object referred to by $contentId. |
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583 | * |
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584 | * @param int $contentId |
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585 | */ |
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586 | public function deleteContent($contentId) |
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596 | |||
597 | /** |
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598 | * Loads data of related to/from $contentId. |
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599 | * |
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600 | * @param int $contentId |
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601 | * @param int $contentVersionNo |
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602 | * @param int $relationType |
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603 | * |
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604 | * @return mixed[][] Content data, array structured like {@see \eZ\Publish\Core\Persistence\Legacy\Content\Gateway::load()} |
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605 | */ |
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606 | public function loadRelations($contentId, $contentVersionNo = null, $relationType = null) |
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616 | |||
617 | /** |
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618 | * Loads data of related to/from $contentId. |
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619 | * |
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620 | * @param int $contentId |
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621 | * @param bool $reverse Reverse relation, default false |
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622 | * @param int $contentVersionNo |
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623 | * @param int $relationType |
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624 | * |
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625 | * @return mixed[][] Content data, array structured like {@see \eZ\Publish\Core\Persistence\Legacy\Content\Gateway::load()} |
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626 | */ |
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627 | public function loadReverseRelations($contentId, $relationType = null) |
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637 | |||
638 | /** |
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639 | * Deletes the relation with the given $relationId. |
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640 | * |
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641 | * @param int $relationId |
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642 | * @param int $type {@see \eZ\Publish\API\Repository\Values\Content\Relation::COMMON, |
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643 | * \eZ\Publish\API\Repository\Values\Content\Relation::EMBED, |
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644 | * \eZ\Publish\API\Repository\Values\Content\Relation::LINK, |
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645 | * \eZ\Publish\API\Repository\Values\Content\Relation::FIELD} |
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646 | */ |
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647 | public function deleteRelation($relationId, $type) |
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657 | |||
658 | /** |
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659 | * Inserts a new relation database record. |
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660 | * |
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661 | * @param \eZ\Publish\SPI\Persistence\Content\Relation\CreateStruct $createStruct |
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662 | * |
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663 | * @return int ID the inserted ID |
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664 | */ |
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665 | public function insertRelation(RelationCreateStruct $struct) |
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675 | |||
676 | /** |
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677 | * Returns all Content IDs for a given $contentTypeId. |
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678 | * |
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679 | * @param int $contentTypeId |
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680 | * |
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681 | * @return int[] |
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682 | */ |
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683 | public function getContentIdsByContentTypeId($contentTypeId) |
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693 | |||
694 | /** |
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695 | * Load name data for set of content id's and corresponding version number. |
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696 | * |
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697 | * @param array[] $rows array of hashes with 'id' and 'version' to load names for |
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698 | * |
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699 | * @return array |
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700 | */ |
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701 | public function loadVersionedNameData($rows) |
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711 | |||
712 | /** |
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713 | * Batch method for copying all relation meta data for copied Content object. |
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714 | * |
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715 | * {@inheritdoc} |
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716 | * |
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717 | * @param int $originalContentId |
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718 | * @param int $copiedContentId |
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719 | * @param int|null $versionNo If specified only copy for a given version number, otherwise all. |
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720 | */ |
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721 | View Code Duplication | public function copyRelations($originalContentId, $copiedContentId, $versionNo = null) |
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731 | } |
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732 |
This check looks for PHPDoc comments describing methods or function parameters that do not exist on the corresponding method or function.
Consider the following example. The parameter
$italy
is not defined by the methodfinale(...)
.The most likely cause is that the parameter was removed, but the annotation was not.