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 ObjectService 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 ObjectService, and based on these observations, apply Extract Interface, too.
1 | <?php |
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37 | class ObjectService extends AbstractBrowserBindingService implements ObjectServiceInterface |
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38 | { |
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39 | /** |
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40 | * Appends the content stream to the content of the document. |
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41 | * |
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42 | * The stream in contentStream is consumed but not closed by this method. |
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43 | * |
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44 | * @param string $repositoryId the identifier for the repository |
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45 | * @param string $objectId The identifier for the object. The repository might return a different/new object id |
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46 | * @param StreamInterface $contentStream The content stream to append |
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47 | * @param boolean $isLastChunk Indicates if this content stream is the last chunk |
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48 | * @param string|null $changeToken The last change token of this object that the client received. |
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49 | * The repository might return a new change token (default is <code>null</code>) |
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50 | * @param ExtensionDataInterface|null $extension |
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51 | */ |
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52 | public function appendContentStream( |
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62 | |||
63 | /** |
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64 | * Updates properties and secondary types of one or more objects. |
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65 | * |
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66 | * @param string $repositoryId the identifier for the repository |
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67 | * @param BulkUpdateObjectIdAndChangeTokenInterface[] $objectIdsAndChangeTokens |
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68 | * @param PropertiesInterface $properties |
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69 | * @param string[] $addSecondaryTypeIds the secondary types to apply |
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70 | * @param string[] $removeSecondaryTypeIds the secondary types to remove |
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71 | * @param ExtensionDataInterface|null $extension |
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72 | * @return BulkUpdateObjectIdAndChangeTokenInterface[] |
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73 | */ |
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74 | public function bulkUpdateProperties( |
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84 | |||
85 | /** |
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86 | * @param string $action |
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87 | * @param PropertiesInterface $properties |
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88 | * @param string[] $policies |
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89 | * @param AclInterface $addAces |
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90 | * @param AclInterface $removeAces |
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91 | * @param ExtensionDataInterface $extension |
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92 | * @return array |
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93 | */ |
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94 | protected function createQueryArray( |
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126 | |||
127 | /** |
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128 | 3 | * Creates a document object of the specified type (given by the cmis:objectTypeId property) |
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129 | 1 | * in the (optionally) specified location. |
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130 | 1 | * |
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131 | 1 | * @param string $repositoryId the identifier for the repository |
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132 | 1 | * @param PropertiesInterface $properties the property values that must be applied to the newly |
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133 | 1 | * created document object |
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134 | 1 | * @param string|null $folderId if specified, the identifier for the folder that must be the parent |
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135 | * folder for the newly created document object |
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136 | 3 | * @param StreamInterface|null $contentStream the content stream that must be stored for the newly |
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137 | * created document object |
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138 | 3 | * @param VersioningState|null $versioningState specifies what the versioning state of the newly created object |
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139 | 3 | * must be (default is <code>VersioningState::MAJOR</code>) |
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140 | * @param string[] $policies a list of policy IDs that must be applied to the newly created document object |
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141 | 3 | * @param AclInterface|null $addAces a list of ACEs that must be added to the newly created document object, |
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142 | 3 | * either using the ACL from folderId if specified, or being applied if no folderId is specified |
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143 | 3 | * @param AclInterface|null $removeAces a list of ACEs that must be removed from the newly created document object, |
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144 | 3 | * either using the ACL from folderId if specified, or being ignored if no folderId is specified |
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145 | 3 | * @param ExtensionDataInterface|null $extension |
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146 | 2 | * @return string|null Returns the new object id or <code>null</code> if the repository sent an empty |
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147 | 2 | * result (which should not happen) |
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148 | 2 | */ |
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149 | public function createDocument( |
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201 | |||
202 | /** |
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203 | 2 | * Creates a document object as a copy of the given source document in the (optionally) specified location. |
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204 | * |
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205 | * @param string $repositoryId the identifier for the repository |
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206 | 2 | * @param string $sourceId the identifier for the source document |
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207 | * @param PropertiesInterface $properties the property values that must be applied to the newly |
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208 | * created document object |
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209 | 2 | * @param string|null $folderId if specified, the identifier for the folder that must be the parent folder for the |
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210 | * newly created document object |
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211 | 2 | * @param VersioningState|null $versioningState specifies what the versioning state of the newly created object |
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212 | 2 | * must be (default is <code>VersioningState::MAJOR</code>) |
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213 | 2 | * @param string[] $policies a list of policy IDs that must be applied to the newly created document object |
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214 | 2 | * @param AclInterface|null $addAces a list of ACEs that must be added to the newly created document object, |
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215 | 2 | * either using the ACL from folderId if specified, or being applied if no folderId is specified |
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216 | 2 | * @param AclInterface|null $removeAces a list of ACEs that must be removed from the newly created document object, |
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217 | 2 | * either using the ACL from folderId if specified, or being ignored if no folderId is specified |
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218 | 2 | * @param ExtensionDataInterface|null $extension |
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219 | 1 | * @return string|null Returns the new object id or <code>null</code> if the repository sent an empty |
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220 | 1 | * result (which should not happen) |
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221 | 1 | */ |
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222 | public function createDocumentFromSource( |
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257 | |||
258 | /** |
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259 | * Creates a folder object of the specified type (given by the cmis:objectTypeId property) in |
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260 | 2 | * the specified location. |
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261 | * |
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262 | * @param string $repositoryId the identifier for the repository |
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263 | * @param PropertiesInterface $properties the property values that must be applied to the newly |
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264 | * created document object |
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265 | * @param string $folderId if specified, the identifier for the folder that must be the parent folder for the |
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266 | * newly created document object |
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267 | * @param string[] $policies a list of policy IDs that must be applied to the newly created document object |
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268 | * @param AclInterface|null $addAces a list of ACEs that must be added to the newly created document object, |
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269 | 2 | * either using the ACL from folderId if specified, or being applied if no folderId is specified |
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270 | 2 | * @param AclInterface|null $removeAces a list of ACEs that must be removed from the newly created document object, |
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271 | * either using the ACL from folderId if specified, or being ignored if no folderId is specified |
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272 | 2 | * @param ExtensionDataInterface|null $extension |
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273 | 2 | * @return string|null Returns the new object id or <code>null</code> if the repository sent an empty |
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274 | 2 | * result (which should not happen) |
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275 | 2 | */ |
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276 | View Code Duplication | public function createFolder( |
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301 | |||
302 | /** |
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303 | * Creates an item object of the specified type (given by the cmis:objectTypeId property). |
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304 | * |
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305 | * @param string $repositoryId The identifier for the repository |
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306 | * @param PropertiesInterface $properties The property values that must be applied to the newly |
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307 | 2 | * created document object |
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308 | * @param string|null $folderId If specified, the identifier for the folder that must be the parent folder for the |
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309 | * newly created document object |
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310 | * @param string[] $policies A list of policy IDs that must be applied to the newly created document object |
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311 | * @param AclInterface|null $addAces A list of ACEs that must be added to the newly created document object, |
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312 | * either using the ACL from folderId if specified, or being applied if no folderId is specified |
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313 | * @param AclInterface|null $removeAces A list of ACEs that must be removed from the newly created document object, |
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314 | * either using the ACL from folderId if specified, or being ignored if no folderId is specified |
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315 | * @param ExtensionDataInterface|null $extension |
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316 | 2 | * @return string|null Returns the new item id or <code>null</code> if the repository sent an empty |
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317 | * result (which should not happen) |
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318 | */ |
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319 | 2 | public function createItem( |
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349 | |||
350 | /** |
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351 | * Creates a policy object of the specified type (given by the cmis:objectTypeId property). |
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352 | * |
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353 | * @param string $repositoryId The identifier for the repository |
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354 | * @param PropertiesInterface $properties The property values that must be applied to the newly |
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355 | * created document object |
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356 | * @param string|null $folderId If specified, the identifier for the folder that must be the parent folder for the |
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357 | * newly created document object |
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358 | * @param string[] $policies A list of policy IDs that must be applied to the newly created document object |
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359 | * @param AclInterface|null $addAces A list of ACEs that must be added to the newly created document object, |
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360 | * either using the ACL from folderId if specified, or being applied if no folderId is specified |
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361 | * @param AclInterface|null $removeAces A list of ACEs that must be removed from the newly created document object, |
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362 | * either using the ACL from folderId if specified, or being ignored if no folderId is specified |
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363 | * @param ExtensionDataInterface|null $extension |
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364 | * @return string The id of the newly-created policy. |
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365 | */ |
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366 | public function createPolicy( |
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377 | |||
378 | /** |
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379 | * Creates a relationship object of the specified type (given by the cmis:objectTypeId property). |
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380 | * |
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381 | * @param string $repositoryId the identifier for the repository |
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382 | * @param PropertiesInterface $properties the property values that must be applied to the newly |
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383 | * created document object |
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384 | * @param string[] $policies a list of policy IDs that must be applied to the newly created document object |
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385 | * @param AclInterface|null $addAces a list of ACEs that must be added to the newly created document object, |
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386 | * either using the ACL from folderId if specified, or being applied if no folderId is specified |
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387 | * @param AclInterface|null $removeAces a list of ACEs that must be removed from the newly created document object, |
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388 | * either using the ACL from folderId if specified, or being ignored if no folderId is specified |
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389 | * @param ExtensionDataInterface|null $extension |
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390 | * @return string|null Returns the new item id of the relationship object or <code>null</code> if the repository |
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391 | * sent an empty result (which should not happen) |
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392 | */ |
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393 | View Code Duplication | public function createRelationship( |
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418 | |||
419 | /** |
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420 | * Deletes the content stream for the specified document object. |
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421 | * |
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422 | * @param string $repositoryId the identifier for the repository |
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423 | * @param string $objectId the identifier for the object. The repository might return a different/new object id |
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424 | 3 | * @param string|null $changeToken the last change token of this object that the client received. |
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425 | * The repository might return a new change token (default is <code>null</code>) |
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426 | * @param ExtensionDataInterface|null $extension |
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427 | * @throws CmisInvalidArgumentException If $objectId is empty |
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428 | */ |
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429 | public function deleteContentStream( |
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467 | |||
468 | /** |
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469 | * Deletes the specified object. |
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470 | * |
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471 | * @param string $repositoryId the identifier for the repository |
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472 | 2 | * @param string $objectId the identifier for the object |
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473 | * @param boolean $allVersions If <code>true</code> then delete all versions of the document, otherwise delete only |
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474 | * the document object specified (default is <code>true</code>) |
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475 | * @param ExtensionDataInterface|null $extension |
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476 | */ |
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477 | public function deleteObject( |
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493 | |||
494 | /** |
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495 | * Deletes the specified folder object and all of its child- and descendant-objects. |
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496 | * |
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497 | * @param string $repositoryId the identifier for the repository |
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498 | * @param string $folderId the identifier for the folder |
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499 | * @param boolean $allVersions If <code>true</code> then delete all versions of the document, otherwise delete only |
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500 | * the document object specified (default is <code>true</code>) |
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501 | * @param UnfileObject|null $unfileObjects defines how the repository must process file-able child- or |
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502 | * descendant-objects (default is <code>UnfileObject::DELETE</code>) |
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503 | * @param boolean $continueOnFailure If <code>true</code>, then the repository should continue attempting to |
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504 | 4 | * perform this operation even if deletion of a child- or descendant-object in the specified folder cannot |
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505 | * be deleted |
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506 | * @param ExtensionDataInterface|null $extension |
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507 | * @return FailedToDeleteDataInterface Returns a list of object ids that could not be deleted |
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508 | */ |
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509 | public function deleteTree( |
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535 | |||
536 | /** |
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537 | * Gets the list of allowable actions for an object. |
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538 | * |
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539 | * @param string $repositoryId the identifier for the repository |
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540 | * @param string $objectId the identifier for the object |
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541 | * @param ExtensionDataInterface|null $extension |
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542 | * @return AllowableActionsInterface |
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543 | */ |
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544 | public function getAllowableActions($repositoryId, $objectId, ExtensionDataInterface $extension = null) |
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548 | |||
549 | /** |
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550 | * Gets the content stream for the specified document object, or gets a rendition stream for |
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551 | * a specified rendition of a document or folder object. |
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552 | * |
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553 | * @param string $repositoryId the identifier for the repository |
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554 | * @param string $objectId the identifier for the object |
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555 | * @param string|null $streamId The identifier for the rendition stream, when used to get a rendition stream. |
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556 | * For documents, if not provided then this method returns the content stream. For folders, |
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557 | * it MUST be provided. |
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558 | * @param integer|null $offset |
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559 | 3 | * @param integer|null $length |
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560 | * @param ExtensionDataInterface|null $extension |
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561 | * @return StreamInterface|null |
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562 | * @throws CmisInvalidArgumentException If object id is empty |
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563 | */ |
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564 | public function getContentStream( |
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596 | |||
597 | /** |
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598 | * Gets the specified information for the object specified by id. |
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599 | * |
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600 | * @param string $repositoryId the identifier for the repository |
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601 | * @param string $objectId the identifier for the object |
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602 | * @param string|null $filter a comma-separated list of query names that defines which properties must be |
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603 | * returned by the repository (default is repository specific) |
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604 | * @param boolean $includeAllowableActions if <code>true</code>, then the repository must return the allowable |
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605 | * actions for the object (default is <code>false</code>) |
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606 | * @param IncludeRelationships|null $includeRelationships indicates what relationships in which the objects |
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607 | * participate must be returned (default is <code>IncludeRelationships::NONE</code>) |
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608 | * @param string $renditionFilter indicates what set of renditions the repository must return whose kind |
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609 | * matches this filter (default is "cmis:none") |
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610 | * @param boolean $includePolicyIds if <code>true</code>, then the repository must return the policy ids for |
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611 | * the object (default is <code>false</code>) |
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612 | * @param boolean $includeAcl if <code>true</code>, then the repository must return the ACL for the object |
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613 | 3 | * (default is <code>false</code>) |
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614 | * @param ExtensionDataInterface|null $extension |
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615 | * @return ObjectDataInterface|null Returns object of type ObjectDataInterface or <code>null</code> |
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616 | * if the repository response was empty |
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617 | */ |
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618 | View Code Duplication | public function getObject( |
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654 | |||
655 | /** |
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656 | * Gets the specified information for the object specified by path. |
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657 | * |
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658 | * @param string $repositoryId the identifier for the repository |
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659 | * @param string $path the path to the object |
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660 | * @param string|null $filter a comma-separated list of query names that defines which properties must be |
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661 | * returned by the repository (default is repository specific) |
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662 | * @param boolean $includeAllowableActions if <code>true</code>, then the repository must return the allowable |
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663 | * actions for the object (default is <code>false</code>) |
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664 | * @param IncludeRelationships|null $includeRelationships indicates what relationships in which the objects |
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665 | * participate must be returned (default is <code>IncludeRelationships::NONE</code>) |
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666 | * @param string $renditionFilter indicates what set of renditions the repository must return whose kind |
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667 | * matches this filter (default is "cmis:none") |
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668 | * @param boolean $includePolicyIds if <code>true</code>, then the repository must return the policy ids for |
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669 | * the object (default is <code>false</code>) |
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670 | * @param boolean $includeAcl if <code>true</code>, then the repository must return the ACL for the object |
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671 | 3 | * (default is <code>false</code>) |
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672 | * @param ExtensionDataInterface|null $extension |
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673 | * @return ObjectDataInterface|null Returns object of type <code>ObjectDataInterface</code> or <code>null</code> |
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674 | * if the repository response was empty |
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675 | */ |
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676 | View Code Duplication | public function getObjectByPath( |
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712 | |||
713 | /** |
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714 | * Gets the list of properties for an object. |
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715 | * |
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716 | * @param string $repositoryId the identifier for the repository |
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717 | * @param string $objectId the identifier for the object |
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718 | 2 | * @param string|null $filter a comma-separated list of query names that defines which properties must be |
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719 | * returned by the repository (default is repository specific) |
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720 | * @param ExtensionDataInterface|null $extension |
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721 | * @return PropertiesInterface |
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722 | */ |
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723 | public function getProperties( |
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750 | |||
751 | /** |
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752 | * Gets the list of associated renditions for the specified object. |
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753 | * Only rendition attributes are returned, not rendition stream. |
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754 | * |
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755 | * @param string $repositoryId the identifier for the repository |
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756 | * @param string $objectId the identifier for the object |
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757 | * @param string $renditionFilter indicates what set of renditions the repository must return whose kind |
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758 | * matches this filter (default is "cmis:none") |
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759 | * @param integer|null $maxItems the maximum number of items to return in a response |
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760 | * (default is repository specific) |
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761 | * @param integer $skipCount number of potential results that the repository MUST skip/page over before |
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762 | 2 | * returning any results (default is 0) |
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763 | * @param ExtensionDataInterface|null $extension |
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764 | * @return RenditionDataInterface[] |
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765 | * @throws CmisInvalidArgumentException If object id is empty or skip count not of type integer |
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766 | */ |
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767 | public function getRenditions( |
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799 | |||
800 | /** |
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801 | * Moves the specified file-able object from one folder to another. |
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802 | * |
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803 | * @param string $repositoryId the identifier for the repository |
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804 | * @param string $objectId the identifier for the object. The repository might return a different/new object id |
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805 | * @param string $targetFolderId the identifier for the target folder |
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806 | 1 | * @param string $sourceFolderId the identifier for the source folder |
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807 | * @param ExtensionDataInterface|null $extension |
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808 | * @return ObjectDataInterface|null Returns object of type ObjectDataInterface or <code>null</code> |
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809 | * if the repository response was empty |
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810 | */ |
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811 | public function moveObject( |
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836 | |||
837 | /** |
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838 | * Sets the content stream for the specified document object. |
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839 | * |
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840 | * @param string $repositoryId The identifier for the repository |
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841 | * @param string $objectId The identifier for the object. The repository might return a different/new object id |
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842 | * @param StreamInterface $contentStream The content stream |
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843 | * @param boolean $overwriteFlag If <code>true</code>, then the repository must replace the existing content stream |
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844 | * for the object (if any) with the input content stream. If <code>false</code>, then the repository must |
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845 | * only set the input content stream for the object if the object currently does not have a content stream |
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846 | * (default is <code>true</code>) |
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847 | 3 | * @param string|null $changeToken The last change token of this object that the client received. |
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848 | * The repository might return a new change token (default is <code>null</code>) |
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849 | * @param ExtensionDataInterface|null $extension |
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850 | * @throws CmisInvalidArgumentException If object id is empty |
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851 | */ |
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852 | public function setContentStream( |
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897 | |||
898 | /** |
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899 | * Updates properties of the specified object. |
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900 | * |
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901 | * @param string $repositoryId The identifier for the repository |
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902 | * @param string $objectId The identifier for the object. The repository might return a different/new object id |
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903 | * @param PropertiesInterface $properties The updated property values that must be applied to the object |
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904 | 3 | * @param string|null $changeToken The last change token of this object that the client received. |
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905 | * The repository might return a new change token (default is <code>null</code>) |
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906 | * @param ExtensionDataInterface|null $extension |
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907 | * @throws CmisInvalidArgumentException If $objectId is empty |
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908 | */ |
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909 | public function updateProperties( |
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944 | } |
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945 |
This check looks for
@param
annotations where the type inferred by our type inference engine differs from the declared type.It makes a suggestion as to what type it considers more descriptive.
Most often this is a case of a parameter that can be null in addition to its declared types.