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 | * L1 cache for objects. Fills with two levels: |
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| 41 | * |
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| 42 | * - First level key is the object ID, path or other singular identifier of object(s) |
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| 43 | * - Second level key is a hash of context arguments used to retrieve the object(s) |
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| 44 | * |
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| 45 | * @var array |
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| 46 | */ |
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| 47 | protected $objectCache = array(); |
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| 48 | |||
| 49 | /** |
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| 50 | * Appends the content stream to the content of the document. |
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| 51 | * |
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| 52 | * The stream in contentStream is consumed but not closed by this method. |
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| 53 | * |
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| 54 | * @param string $repositoryId the identifier for the repository |
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| 55 | * @param string $objectId The identifier for the object. The repository might return a different/new object id |
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| 56 | * @param StreamInterface $contentStream The content stream to append |
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| 57 | * @param boolean $isLastChunk Indicates if this content stream is the last chunk |
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| 58 | * @param string|null $changeToken The last change token of this object that the client received. |
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| 59 | * The repository might return a new change token (default is <code>null</code>) |
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| 60 | * @param ExtensionDataInterface|null $extension |
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| 61 | */ |
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| 62 | public function appendContentStream( |
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| 72 | |||
| 73 | /** |
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| 74 | * Updates properties and secondary types of one or more objects. |
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| 75 | * |
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| 76 | * @param string $repositoryId the identifier for the repository |
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| 77 | * @param BulkUpdateObjectIdAndChangeTokenInterface[] $objectIdsAndChangeTokens |
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| 78 | * @param PropertiesInterface $properties |
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| 79 | * @param string[] $addSecondaryTypeIds the secondary types to apply |
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| 80 | * @param string[] $removeSecondaryTypeIds the secondary types to remove |
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| 81 | * @param ExtensionDataInterface|null $extension |
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| 82 | * @return BulkUpdateObjectIdAndChangeTokenInterface[] |
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| 83 | */ |
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| 84 | public function bulkUpdateProperties( |
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| 94 | |||
| 95 | /** |
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| 96 | * @param string $action |
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| 97 | * @param PropertiesInterface $properties |
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| 98 | * @param string[] $policies |
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| 99 | * @param AclInterface $addAces |
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| 100 | * @param AclInterface $removeAces |
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| 101 | * @param ExtensionDataInterface $extension |
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| 102 | * @return array |
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| 103 | */ |
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| 104 | 9 | protected function createQueryArray( |
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| 136 | |||
| 137 | /** |
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| 138 | * Creates a document object of the specified type (given by the cmis:objectTypeId property) |
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| 139 | * in the (optionally) specified location. |
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| 140 | * |
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| 141 | * @param string $repositoryId the identifier for the repository |
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| 142 | * @param PropertiesInterface $properties the property values that must be applied to the newly |
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| 143 | * created document object |
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| 144 | * @param string|null $folderId if specified, the identifier for the folder that must be the parent |
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| 145 | * folder for the newly created document object |
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| 146 | * @param StreamInterface|null $contentStream the content stream that must be stored for the newly |
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| 147 | * created document object |
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| 148 | * @param VersioningState|null $versioningState specifies what the versioning state of the newly created object |
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| 149 | * must be (default is <code>VersioningState::MAJOR</code>) |
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| 150 | * @param string[] $policies a list of policy IDs that must be applied to the newly created document object |
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| 151 | * @param AclInterface|null $addAces a list of ACEs that must be added to the newly created document object, |
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| 152 | * either using the ACL from folderId if specified, or being applied if no folderId is specified |
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| 153 | * @param AclInterface|null $removeAces a list of ACEs that must be removed from the newly created document object, |
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| 154 | * either using the ACL from folderId if specified, or being ignored if no folderId is specified |
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| 155 | * @param ExtensionDataInterface|null $extension |
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| 156 | * @return string|null Returns the new object id or <code>null</code> if the repository sent an empty |
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| 157 | * result (which should not happen) |
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| 158 | */ |
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| 159 | 3 | public function createDocument( |
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| 211 | |||
| 212 | /** |
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| 213 | * Creates a document object as a copy of the given source document in the (optionally) specified location. |
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| 214 | * |
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| 215 | * @param string $repositoryId the identifier for the repository |
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| 216 | * @param string $sourceId the identifier for the source document |
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| 217 | * @param PropertiesInterface $properties the property values that must be applied to the newly |
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| 218 | * created document object |
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| 219 | * @param string|null $folderId if specified, the identifier for the folder that must be the parent folder for the |
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| 220 | * newly created document object |
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| 221 | * @param VersioningState|null $versioningState specifies what the versioning state of the newly created object |
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| 222 | * must be (default is <code>VersioningState::MAJOR</code>) |
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| 223 | * @param string[] $policies a list of policy IDs that must be applied to the newly created document object |
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| 224 | * @param AclInterface|null $addAces a list of ACEs that must be added to the newly created document object, |
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| 225 | * either using the ACL from folderId if specified, or being applied if no folderId is specified |
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| 226 | * @param AclInterface|null $removeAces a list of ACEs that must be removed from the newly created document object, |
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| 227 | * either using the ACL from folderId if specified, or being ignored if no folderId is specified |
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| 228 | * @param ExtensionDataInterface|null $extension |
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| 229 | * @return string|null Returns the new object id or <code>null</code> if the repository sent an empty |
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| 230 | * result (which should not happen) |
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| 231 | */ |
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| 232 | 2 | public function createDocumentFromSource( |
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| 267 | |||
| 268 | /** |
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| 269 | * Creates a folder object of the specified type (given by the cmis:objectTypeId property) in |
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| 270 | * the specified location. |
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| 271 | * |
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| 272 | * @param string $repositoryId the identifier for the repository |
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| 273 | * @param PropertiesInterface $properties the property values that must be applied to the newly |
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| 274 | * created document object |
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| 275 | * @param string $folderId if specified, the identifier for the folder that must be the parent folder for the |
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| 276 | * newly created document object |
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| 277 | * @param string[] $policies a list of policy IDs that must be applied to the newly created document object |
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| 278 | * @param AclInterface|null $addAces a list of ACEs that must be added to the newly created document object, |
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| 279 | * either using the ACL from folderId if specified, or being applied if no folderId is specified |
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| 280 | * @param AclInterface|null $removeAces a list of ACEs that must be removed from the newly created document object, |
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| 281 | * either using the ACL from folderId if specified, or being ignored if no folderId is specified |
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| 282 | * @param ExtensionDataInterface|null $extension |
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| 283 | * @return string|null Returns the new object id or <code>null</code> if the repository sent an empty |
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| 284 | * result (which should not happen) |
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| 285 | */ |
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| 286 | 2 | View Code Duplication | public function createFolder( |
| 311 | |||
| 312 | /** |
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| 313 | * Creates an item object of the specified type (given by the cmis:objectTypeId property). |
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| 314 | * |
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| 315 | * @param string $repositoryId The identifier for the repository |
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| 316 | * @param PropertiesInterface $properties The property values that must be applied to the newly |
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| 317 | * created document object |
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| 318 | * @param string|null $folderId If specified, the identifier for the folder that must be the parent folder for the |
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| 319 | * newly created document object |
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| 320 | * @param string[] $policies A list of policy IDs that must be applied to the newly created document object |
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| 321 | * @param AclInterface|null $addAces A list of ACEs that must be added to the newly created document object, |
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| 322 | * either using the ACL from folderId if specified, or being applied if no folderId is specified |
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| 323 | * @param AclInterface|null $removeAces A list of ACEs that must be removed from the newly created document object, |
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| 324 | * either using the ACL from folderId if specified, or being ignored if no folderId is specified |
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| 325 | * @param ExtensionDataInterface|null $extension |
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| 326 | * @return string|null Returns the new item id or <code>null</code> if the repository sent an empty |
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| 327 | * result (which should not happen) |
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| 328 | */ |
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| 329 | 2 | public function createItem( |
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| 359 | |||
| 360 | /** |
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| 361 | * Creates a policy object of the specified type (given by the cmis:objectTypeId property). |
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| 362 | * |
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| 363 | * @param string $repositoryId The identifier for the repository |
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| 364 | * @param PropertiesInterface $properties The property values that must be applied to the newly |
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| 365 | * created document object |
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| 366 | * @param string|null $folderId If specified, the identifier for the folder that must be the parent folder for the |
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| 367 | * newly created document object |
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| 368 | * @param string[] $policies A list of policy IDs that must be applied to the newly created document object |
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| 369 | * @param AclInterface|null $addAces A list of ACEs that must be added to the newly created document object, |
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| 370 | * either using the ACL from folderId if specified, or being applied if no folderId is specified |
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| 371 | * @param AclInterface|null $removeAces A list of ACEs that must be removed from the newly created document object, |
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| 372 | * either using the ACL from folderId if specified, or being ignored if no folderId is specified |
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| 373 | * @param ExtensionDataInterface|null $extension |
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| 374 | * @return string The id of the newly-created policy. |
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| 375 | */ |
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| 376 | public function createPolicy( |
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| 387 | |||
| 388 | /** |
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| 389 | * Creates a relationship object of the specified type (given by the cmis:objectTypeId property). |
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| 390 | * |
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| 391 | * @param string $repositoryId the identifier for the repository |
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| 392 | * @param PropertiesInterface $properties the property values that must be applied to the newly |
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| 393 | * created document object |
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| 394 | * @param string[] $policies a list of policy IDs that must be applied to the newly created document object |
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| 395 | * @param AclInterface|null $addAces a list of ACEs that must be added to the newly created document object, |
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| 396 | * either using the ACL from folderId if specified, or being applied if no folderId is specified |
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| 397 | * @param AclInterface|null $removeAces a list of ACEs that must be removed from the newly created document object, |
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| 398 | * either using the ACL from folderId if specified, or being ignored if no folderId is specified |
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| 399 | * @param ExtensionDataInterface|null $extension |
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| 400 | * @return string|null Returns the new item id of the relationship object or <code>null</code> if the repository |
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| 401 | * sent an empty result (which should not happen) |
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| 402 | */ |
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| 403 | View Code Duplication | public function createRelationship( |
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| 428 | |||
| 429 | /** |
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| 430 | * Deletes the content stream for the specified document object. |
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| 431 | * |
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| 432 | * @param string $repositoryId the identifier for the repository |
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| 433 | * @param string $objectId the identifier for the object. The repository might return a different/new object id |
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| 434 | * @param string|null $changeToken the last change token of this object that the client received. |
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| 435 | * The repository might return a new change token (default is <code>null</code>) |
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| 436 | * @param ExtensionDataInterface|null $extension |
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| 437 | * @throws CmisInvalidArgumentException If $objectId is empty |
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| 438 | */ |
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| 439 | 3 | public function deleteContentStream( |
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| 479 | |||
| 480 | /** |
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| 481 | * Deletes the specified object. |
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| 482 | * |
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| 483 | * @param string $repositoryId the identifier for the repository |
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| 484 | * @param string $objectId the identifier for the object |
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| 485 | * @param boolean $allVersions If <code>true</code> then delete all versions of the document, otherwise delete only |
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| 486 | * the document object specified (default is <code>true</code>) |
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| 487 | * @param ExtensionDataInterface|null $extension |
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| 488 | */ |
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| 489 | 2 | public function deleteObject( |
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| 506 | |||
| 507 | /** |
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| 508 | * Deletes the specified folder object and all of its child- and descendant-objects. |
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| 509 | * |
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| 510 | * @param string $repositoryId the identifier for the repository |
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| 511 | * @param string $folderId the identifier for the folder |
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| 512 | * @param boolean $allVersions If <code>true</code> then delete all versions of the document, otherwise delete only |
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| 513 | * the document object specified (default is <code>true</code>) |
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| 514 | * @param UnfileObject|null $unfileObjects defines how the repository must process file-able child- or |
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| 515 | * descendant-objects (default is <code>UnfileObject::DELETE</code>) |
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| 516 | * @param boolean $continueOnFailure If <code>true</code>, then the repository should continue attempting to |
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| 517 | * perform this operation even if deletion of a child- or descendant-object in the specified folder cannot |
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| 518 | * be deleted |
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| 519 | * @param ExtensionDataInterface|null $extension |
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| 520 | * @return FailedToDeleteDataInterface Returns a list of object ids that could not be deleted |
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| 521 | */ |
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| 522 | 4 | public function deleteTree( |
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| 548 | |||
| 549 | /** |
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| 550 | * Gets the list of allowable actions for an object. |
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| 551 | * |
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| 552 | * @param string $repositoryId the identifier for the repository |
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| 553 | * @param string $objectId the identifier for the object |
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| 554 | * @param ExtensionDataInterface|null $extension |
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| 555 | * @return AllowableActionsInterface |
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| 556 | */ |
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| 557 | public function getAllowableActions($repositoryId, $objectId, ExtensionDataInterface $extension = null) |
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| 561 | |||
| 562 | /** |
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| 563 | * Gets the content stream for the specified document object, or gets a rendition stream for |
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| 564 | * a specified rendition of a document or folder object. |
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| 565 | * |
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| 566 | * @param string $repositoryId the identifier for the repository |
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| 567 | * @param string $objectId the identifier for the object |
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| 568 | * @param string|null $streamId The identifier for the rendition stream, when used to get a rendition stream. |
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| 569 | * For documents, if not provided then this method returns the content stream. For folders, |
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| 570 | * it MUST be provided. |
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| 571 | * @param integer|null $offset |
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| 572 | * @param integer|null $length |
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| 573 | * @param ExtensionDataInterface|null $extension |
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| 574 | * @return StreamInterface|null |
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| 575 | * @throws CmisInvalidArgumentException If object id is empty |
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| 576 | */ |
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| 577 | 3 | public function getContentStream( |
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| 609 | |||
| 610 | /** |
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| 611 | * Gets the specified information for the object specified by id. |
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| 612 | * |
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| 613 | * @param string $repositoryId the identifier for the repository |
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| 614 | * @param string $objectId the identifier for the object |
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| 615 | * @param string|null $filter a comma-separated list of query names that defines which properties must be |
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| 616 | * returned by the repository (default is repository specific) |
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| 617 | * @param boolean $includeAllowableActions if <code>true</code>, then the repository must return the allowable |
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| 618 | * actions for the object (default is <code>false</code>) |
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| 619 | * @param IncludeRelationships|null $includeRelationships indicates what relationships in which the objects |
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| 620 | * participate must be returned (default is <code>IncludeRelationships::NONE</code>) |
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| 621 | * @param string $renditionFilter indicates what set of renditions the repository must return whose kind |
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| 622 | * matches this filter (default is "cmis:none") |
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| 623 | * @param boolean $includePolicyIds if <code>true</code>, then the repository must return the policy ids for |
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| 624 | * the object (default is <code>false</code>) |
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| 625 | * @param boolean $includeAcl if <code>true</code>, then the repository must return the ACL for the object |
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| 626 | * (default is <code>false</code>) |
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| 627 | * @param ExtensionDataInterface|null $extension |
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| 628 | * @return ObjectDataInterface|null Returns object of type ObjectDataInterface or <code>null</code> |
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| 629 | * if the repository response was empty |
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| 630 | */ |
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| 631 | 3 | View Code Duplication | public function getObject( |
| 686 | |||
| 687 | /** |
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| 688 | * Gets the specified information for the object specified by path. |
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| 689 | * |
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| 690 | * @param string $repositoryId the identifier for the repository |
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| 691 | * @param string $path the path to the object |
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| 692 | * @param string|null $filter a comma-separated list of query names that defines which properties must be |
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| 693 | * returned by the repository (default is repository specific) |
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| 694 | * @param boolean $includeAllowableActions if <code>true</code>, then the repository must return the allowable |
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| 695 | * actions for the object (default is <code>false</code>) |
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| 696 | * @param IncludeRelationships|null $includeRelationships indicates what relationships in which the objects |
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| 697 | * participate must be returned (default is <code>IncludeRelationships::NONE</code>) |
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| 698 | * @param string $renditionFilter indicates what set of renditions the repository must return whose kind |
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| 699 | * matches this filter (default is "cmis:none") |
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| 700 | * @param boolean $includePolicyIds if <code>true</code>, then the repository must return the policy ids for |
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| 701 | * the object (default is <code>false</code>) |
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| 702 | * @param boolean $includeAcl if <code>true</code>, then the repository must return the ACL for the object |
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| 703 | * (default is <code>false</code>) |
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| 704 | * @param ExtensionDataInterface|null $extension |
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| 705 | * @return ObjectDataInterface|null Returns object of type <code>ObjectDataInterface</code> or <code>null</code> |
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| 706 | * if the repository response was empty |
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| 707 | */ |
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| 708 | 3 | View Code Duplication | public function getObjectByPath( |
| 764 | |||
| 765 | /** |
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| 766 | * Gets the list of properties for an object. |
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| 767 | * |
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| 768 | * @param string $repositoryId the identifier for the repository |
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| 769 | * @param string $objectId the identifier for the object |
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| 770 | * @param string|null $filter a comma-separated list of query names that defines which properties must be |
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| 771 | * returned by the repository (default is repository specific) |
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| 772 | * @param ExtensionDataInterface|null $extension |
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| 773 | * @return PropertiesInterface |
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| 774 | */ |
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| 775 | 2 | public function getProperties( |
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| 820 | |||
| 821 | /** |
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| 822 | * Gets the list of associated renditions for the specified object. |
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| 823 | * Only rendition attributes are returned, not rendition stream. |
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| 824 | * |
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| 825 | * @param string $repositoryId the identifier for the repository |
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| 826 | * @param string $objectId the identifier for the object |
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| 827 | * @param string $renditionFilter indicates what set of renditions the repository must return whose kind |
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| 828 | * matches this filter (default is "cmis:none") |
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| 829 | * @param integer|null $maxItems the maximum number of items to return in a response |
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| 830 | * (default is repository specific) |
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| 831 | * @param integer $skipCount number of potential results that the repository MUST skip/page over before |
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| 832 | * returning any results (default is 0) |
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| 833 | * @param ExtensionDataInterface|null $extension |
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| 834 | * @return RenditionDataInterface[] |
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| 835 | * @throws CmisInvalidArgumentException If object id is empty or skip count not of type integer |
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| 836 | */ |
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| 837 | 2 | public function getRenditions( |
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| 869 | |||
| 870 | /** |
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| 871 | * Moves the specified file-able object from one folder to another. |
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| 872 | * |
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| 873 | * @param string $repositoryId the identifier for the repository |
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| 874 | * @param string $objectId the identifier for the object. The repository might return a different/new object id |
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| 875 | * @param string $targetFolderId the identifier for the target folder |
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| 876 | * @param string $sourceFolderId the identifier for the source folder |
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| 877 | * @param ExtensionDataInterface|null $extension |
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| 878 | * @return ObjectDataInterface|null Returns object of type ObjectDataInterface or <code>null</code> |
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| 879 | * if the repository response was empty |
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| 880 | */ |
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| 881 | 1 | public function moveObject( |
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| 908 | |||
| 909 | /** |
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| 910 | * Sets the content stream for the specified document object. |
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| 911 | * |
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| 912 | * @param string $repositoryId The identifier for the repository |
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| 913 | * @param string $objectId The identifier for the object. The repository might return a different/new object id |
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| 914 | * @param StreamInterface $contentStream The content stream |
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| 915 | * @param boolean $overwriteFlag If <code>true</code>, then the repository must replace the existing content stream |
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| 916 | * for the object (if any) with the input content stream. If <code>false</code>, then the repository must |
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| 917 | * only set the input content stream for the object if the object currently does not have a content stream |
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| 918 | * (default is <code>true</code>) |
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| 919 | * @param string|null $changeToken The last change token of this object that the client received. |
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| 920 | * The repository might return a new change token (default is <code>null</code>) |
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| 921 | * @param ExtensionDataInterface|null $extension |
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| 922 | * @throws CmisInvalidArgumentException If object id is empty |
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| 923 | */ |
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| 924 | 3 | public function setContentStream( |
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| 971 | |||
| 972 | /** |
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| 973 | * Updates properties of the specified object. |
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| 974 | * |
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| 975 | * @param string $repositoryId The identifier for the repository |
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| 976 | * @param string $objectId The identifier for the object. The repository might return a different/new object id |
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| 977 | * @param PropertiesInterface $properties The updated property values that must be applied to the object |
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| 978 | * @param string|null $changeToken The last change token of this object that the client received. |
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| 979 | * The repository might return a new change token (default is <code>null</code>) |
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| 980 | * @param ExtensionDataInterface|null $extension |
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| 981 | * @throws CmisInvalidArgumentException If $objectId is empty |
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| 982 | */ |
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| 983 | 3 | public function updateProperties( |
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| 1020 | |||
| 1021 | /** |
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| 1022 | * @param string $identifier |
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| 1023 | * @param mixed $additionalHashValues |
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| 1024 | * @return array |
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| 1025 | */ |
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| 1026 | 8 | protected function createCacheKey($identifier, $additionalHashValues) |
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| 1033 | |||
| 1034 | /** |
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| 1035 | * Returns TRUE if an object with cache key $identifier is currently cached. |
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| 1036 | * |
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| 1037 | * @param array $identifier |
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| 1038 | * @return boolean |
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| 1039 | */ |
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| 1040 | 8 | protected function isCached(array $identifier) |
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| 1044 | |||
| 1045 | /** |
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| 1046 | * Gets the cached object with cache key $identifier. |
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| 1047 | * |
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| 1048 | * @param string $identifier |
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| 1049 | * @return mixed |
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| 1050 | */ |
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| 1051 | protected function getCached(array $identifier) |
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| 1058 | |||
| 1059 | /** |
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| 1060 | * Gets the cached object with cache key $identifier. |
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| 1061 | * |
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| 1062 | * @param string $identifier |
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| 1063 | * @param mixed $object |
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| 1064 | * @return mixed |
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| 1065 | */ |
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| 1066 | 8 | protected function cache(array $identifier, $object) |
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| 1071 | |||
| 1072 | /** |
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| 1073 | * Flushes all cached entries. This is implemented as a flush-all with |
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| 1074 | * no way to flush individual entries due to the way CMIS object data |
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| 1075 | * gets returned from CMIS. Two widely different object data sets may |
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| 1076 | * contain a reference to the same item and even with extensive cross |
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| 1077 | * referencing it would be technically unfeasible to selectively clear |
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| 1078 | * or reload an object by identifier. Such flushing would be inevitably |
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| 1079 | * flawed with edge cases of incomplete flushing or become so complex |
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| 1080 | * that it defeats the purpose of caching in the first place. |
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| 1081 | * |
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| 1082 | * Note that cache flushing only happens when modifying the repository |
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| 1083 | * contents - which should limit the negative impact. The cache is also |
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| 1084 | * not persistent and will only affect the current request. As such, it |
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| 1085 | * is implemented to optimise requests where the same object, type, |
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| 1086 | * policy etc. gets accessed multiple times. |
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| 1087 | * |
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| 1088 | * @return void |
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| 1089 | */ |
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| 1090 | 12 | protected function flushCached() |
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| 1094 | } |
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| 1095 |
This check looks for
@paramannotations 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.