Complex classes like Handler 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 Handler, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 26 | class Handler implements BaseLocationHandler |
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| 27 | { |
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| 28 | /** |
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| 29 | * Gateway for handling location data. |
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| 30 | * |
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| 31 | * @var \eZ\Publish\Core\Persistence\Legacy\Content\Location\Gateway |
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| 32 | */ |
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| 33 | protected $locationGateway; |
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| 34 | |||
| 35 | /** |
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| 36 | * Location locationMapper. |
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| 37 | * |
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| 38 | * @var \eZ\Publish\Core\Persistence\Legacy\Content\Location\Mapper |
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| 39 | */ |
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| 40 | protected $locationMapper; |
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| 41 | |||
| 42 | /** |
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| 43 | * Content handler. |
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| 44 | * |
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| 45 | * @var \eZ\Publish\Core\Persistence\Legacy\Content\Handler |
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| 46 | */ |
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| 47 | protected $contentHandler; |
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| 48 | |||
| 49 | /** |
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| 50 | * Object state handler. |
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| 51 | * |
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| 52 | * @var \eZ\Publish\Core\Persistence\Legacy\Content\ObjectState\Handler |
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| 53 | */ |
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| 54 | protected $objectStateHandler; |
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| 55 | |||
| 56 | /** |
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| 57 | * Tree handler. |
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| 58 | * |
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| 59 | * @var \eZ\Publish\Core\Persistence\Legacy\Content\TreeHandler |
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| 60 | */ |
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| 61 | protected $treeHandler; |
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| 62 | |||
| 63 | /** |
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| 64 | * Construct from userGateway. |
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| 65 | * |
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| 66 | * @param \eZ\Publish\Core\Persistence\Legacy\Content\Location\Gateway $locationGateway |
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| 67 | * @param \eZ\Publish\Core\Persistence\Legacy\Content\Location\Mapper $locationMapper |
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| 68 | * @param \eZ\Publish\Core\Persistence\Legacy\Content\Handler $contentHandler |
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| 69 | * @param \eZ\Publish\Core\Persistence\Legacy\Content\ObjectState\Handler $objectStateHandler |
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| 70 | * @param \eZ\Publish\Core\Persistence\Legacy\Content\TreeHandler $treeHandler |
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| 71 | * |
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| 72 | * @return \eZ\Publish\Core\Persistence\Legacy\Content\Location\Handler |
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| 73 | */ |
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| 74 | public function __construct( |
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| 87 | |||
| 88 | /** |
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| 89 | * Returns parent path string for a path string. |
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| 90 | * |
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| 91 | * @param string $pathString |
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| 92 | * |
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| 93 | * @return string |
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| 94 | */ |
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| 95 | protected function getParentPathString($pathString) |
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| 99 | |||
| 100 | /** |
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| 101 | * Loads the data for the location identified by $locationId. |
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| 102 | * |
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| 103 | * @param int $locationId |
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| 104 | * |
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| 105 | * @return \eZ\Publish\SPI\Persistence\Content\Location |
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| 106 | */ |
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| 107 | public function load($locationId) |
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| 111 | |||
| 112 | /** |
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| 113 | * Loads the subtree ids of the location identified by $locationId. |
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| 114 | * |
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| 115 | * @param int $locationId |
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| 116 | * |
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| 117 | * @return array Location ids are in the index, Content ids in the value. |
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| 118 | */ |
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| 119 | public function loadSubtreeIds($locationId) |
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| 123 | |||
| 124 | /** |
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| 125 | * Loads the data for the location identified by $remoteId. |
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| 126 | * |
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| 127 | * @param string $remoteId |
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| 128 | * |
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| 129 | * @throws \eZ\Publish\API\Repository\Exceptions\NotFoundException |
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| 130 | * |
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| 131 | * @return \eZ\Publish\SPI\Persistence\Content\Location |
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| 132 | */ |
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| 133 | public function loadByRemoteId($remoteId) |
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| 139 | |||
| 140 | /** |
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| 141 | * Loads all locations for $contentId, optionally limited to a sub tree |
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| 142 | * identified by $rootLocationId. |
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| 143 | * |
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| 144 | * @param int $contentId |
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| 145 | * @param int $rootLocationId |
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| 146 | * |
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| 147 | * @return \eZ\Publish\SPI\Persistence\Content\Location[] |
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| 148 | */ |
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| 149 | public function loadLocationsByContent($contentId, $rootLocationId = null) |
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| 155 | |||
| 156 | /** |
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| 157 | * @see \eZ\Publish\SPI\Persistence\Content\Location\Handler::loadParentLocationsForDraftContent |
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| 158 | */ |
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| 159 | public function loadParentLocationsForDraftContent($contentId) |
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| 165 | |||
| 166 | /** |
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| 167 | * Returns an array of default content states with content state group id as key. |
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| 168 | * |
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| 169 | * @return \eZ\Publish\SPI\Persistence\Content\ObjectState[] |
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| 170 | */ |
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| 171 | protected function getDefaultContentStates() |
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| 185 | |||
| 186 | /** |
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| 187 | * @param Content $content |
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| 188 | * @param \eZ\Publish\SPI\Persistence\Content\ObjectState[] $contentStates |
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| 189 | */ |
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| 190 | protected function setContentStates(Content $content, array $contentStates) |
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| 200 | |||
| 201 | /** |
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| 202 | * Copy location object identified by $sourceId, into destination identified by $destinationParentId. |
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| 203 | * |
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| 204 | * Performs a deep copy of the location identified by $sourceId and all of |
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| 205 | * its child locations, copying the most recent published content object |
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| 206 | * for each location to a new content object without any additional version |
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| 207 | * information. Relations are not copied. URLs are not touched at all. |
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| 208 | * |
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| 209 | * @todo Either move to async/batch or find ways toward optimizing away operations per object. |
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| 210 | * @todo Optionally retain dates and set creator |
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| 211 | * |
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| 212 | * @param mixed $sourceId |
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| 213 | * @param mixed $destinationParentId |
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| 214 | * @param int|null $newOwnerId |
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| 215 | * |
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| 216 | * @return Location the newly created Location. |
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| 217 | * @throws \eZ\Publish\API\Repository\Exceptions\NotFoundException |
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| 218 | */ |
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| 219 | public function copySubtree($sourceId, $destinationParentId, $newOwnerId = null) |
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| 321 | |||
| 322 | /** |
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| 323 | * Retrieves section ID of the location's content. |
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| 324 | * |
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| 325 | * @param int $locationId |
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| 326 | * |
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| 327 | * @return int |
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| 328 | */ |
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| 329 | private function getSectionId($locationId) |
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| 336 | |||
| 337 | /** |
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| 338 | * If the location is the main location for its content, updates subtree section. |
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| 339 | * |
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| 340 | * @param Location $location |
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| 341 | * @param int $sectionId |
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| 342 | */ |
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| 343 | private function updateSubtreeSectionIfNecessary(Location $location, $sectionId) |
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| 349 | |||
| 350 | /** |
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| 351 | * Checks if the location is the main location for its content. |
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| 352 | * |
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| 353 | * @param Location $location |
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| 354 | * |
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| 355 | * @return bool |
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| 356 | */ |
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| 357 | private function isMainLocation(Location $location) |
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| 363 | |||
| 364 | /** |
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| 365 | * Moves location identified by $sourceId into new parent identified by $destinationParentId. |
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| 366 | * |
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| 367 | * Performs a full move of the location identified by $sourceId to a new |
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| 368 | * destination, identified by $destinationParentId. Relations do not need |
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| 369 | * to be updated, since they refer to Content. URLs are not touched. |
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| 370 | * |
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| 371 | * @param mixed $sourceId |
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| 372 | * @param mixed $destinationParentId |
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| 373 | * |
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| 374 | * @return bool |
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| 375 | */ |
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| 376 | public function move($sourceId, $destinationParentId) |
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| 397 | |||
| 398 | /** |
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| 399 | * Marks the given nodes and all ancestors as modified. |
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| 400 | * |
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| 401 | * Optionally a time stamp with the modification date may be specified, |
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| 402 | * otherwise the current time is used. |
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| 403 | * |
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| 404 | * @param int|string $locationId |
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| 405 | * @param int $timestamp |
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| 406 | */ |
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| 407 | public function markSubtreeModified($locationId, $timestamp = null) |
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| 413 | |||
| 414 | /** |
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| 415 | * Sets a location to be hidden, and it self + all children to invisible. |
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| 416 | * |
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| 417 | * @param mixed $id Location ID |
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| 418 | */ |
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| 419 | public function hide($id) |
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| 425 | |||
| 426 | /** |
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| 427 | * Sets a location to be unhidden, and self + children to visible unless a parent is hiding the tree. |
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| 428 | * If not make sure only children down to first hidden node is marked visible. |
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| 429 | * |
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| 430 | * @param mixed $id |
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| 431 | */ |
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| 432 | public function unHide($id) |
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| 438 | |||
| 439 | /** |
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| 440 | * Swaps the content object being pointed to by a location object. |
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| 441 | * |
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| 442 | * Make the location identified by $locationId1 refer to the Content |
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| 443 | * referred to by $locationId2 and vice versa. |
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| 444 | * |
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| 445 | * @param mixed $locationId1 |
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| 446 | * @param mixed $locationId2 |
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| 447 | * |
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| 448 | * @return bool |
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| 449 | */ |
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| 450 | public function swap($locationId1, $locationId2) |
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| 454 | |||
| 455 | /** |
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| 456 | * Updates an existing location. |
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| 457 | * |
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| 458 | * @param \eZ\Publish\SPI\Persistence\Content\Location\UpdateStruct $location |
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| 459 | * @param int $locationId |
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| 460 | */ |
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| 461 | public function update(UpdateStruct $location, $locationId) |
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| 465 | |||
| 466 | /** |
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| 467 | * Creates a new location rooted at $location->parentId. |
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| 468 | * |
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| 469 | * @param \eZ\Publish\SPI\Persistence\Content\Location\CreateStruct $createStruct |
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| 470 | * |
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| 471 | * @return \eZ\Publish\SPI\Persistence\Content\Location |
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| 472 | */ |
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| 473 | public function create(CreateStruct $createStruct) |
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| 485 | |||
| 486 | /** |
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| 487 | * Removes all Locations under and including $locationId. |
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| 488 | * |
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| 489 | * Performs a recursive delete on the location identified by $locationId, |
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| 490 | * including all of its child locations. Content which is not referred to |
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| 491 | * by any other location is automatically removed. Content which looses its |
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| 492 | * main Location will get the first of its other Locations assigned as the |
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| 493 | * new main Location. |
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| 494 | * |
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| 495 | * @param mixed $locationId |
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| 496 | * |
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| 497 | * @return bool |
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| 498 | */ |
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| 499 | public function removeSubtree($locationId) |
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| 503 | |||
| 504 | /** |
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| 505 | * Set section on all content objects in the subtree. |
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| 506 | * |
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| 507 | * @param mixed $locationId |
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| 508 | * @param mixed $sectionId |
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| 509 | */ |
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| 510 | public function setSectionForSubtree($locationId, $sectionId) |
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| 514 | |||
| 515 | /** |
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| 516 | * Changes main location of content identified by given $contentId to location identified by given $locationId. |
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| 517 | * |
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| 518 | * Updates ezcontentobject_tree and eznode_assignment tables (eznode_assignment for content current version number). |
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| 519 | * |
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| 520 | * @param mixed $contentId |
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| 521 | * @param mixed $locationId |
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| 522 | */ |
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| 523 | public function changeMainLocation($contentId, $locationId) |
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| 527 | |||
| 528 | /** |
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| 529 | * Get the total number of all existing Locations. Can be combined with loadAllLocations. |
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| 530 | * |
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| 531 | * @return int |
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| 532 | */ |
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| 533 | public function countAllLocations() |
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| 537 | |||
| 538 | /** |
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| 539 | * Bulk-load all existing Locations, constrained by $limit and $offset to paginate results. |
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| 540 | * |
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| 541 | * @param int $offset |
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| 542 | * @param int $limit |
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| 543 | * |
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| 544 | * @return \eZ\Publish\SPI\Persistence\Content\Location[] |
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| 545 | */ |
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| 546 | public function loadAllLocations($offset, $limit) |
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| 552 | } |
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| 553 |
Adding a
@returnannotation to a constructor is not recommended, since a constructor does not have a meaningful return value.Please refer to the PHP core documentation on constructors.