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<?php |
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namespace alsvanzelf\jsonapi\objects; |
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use alsvanzelf\jsonapi\exceptions\Exception; |
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use alsvanzelf\jsonapi\exceptions\DuplicateException; |
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use alsvanzelf\jsonapi\helpers\AtMemberManager; |
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use alsvanzelf\jsonapi\helpers\Validator; |
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use alsvanzelf\jsonapi\interfaces\ObjectInterface; |
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use alsvanzelf\jsonapi\interfaces\ResourceInterface; |
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use alsvanzelf\jsonapi\objects\MetaObject; |
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class ResourceIdentifierObject implements ObjectInterface, ResourceInterface { |
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use AtMemberManager; |
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/** @var string */ |
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protected $type; |
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/** @var string */ |
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protected $id; |
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/** @var string */ |
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protected $lid; |
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/** @var MetaObject */ |
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protected $meta; |
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/** @var Validator */ |
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protected $validator; |
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/** |
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* @note $type and $id are optional to pass during construction |
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* however they are required for a valid ResourceIdentifierObject |
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* so use ->setType() and ->setId() if not passing them during construction |
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* |
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* @param string $type optional |
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* @param string|int $id optional |
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*/ |
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public function __construct($type=null, $id=null) { |
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$this->validator = new Validator(); |
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if ($type !== null) { |
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$this->setType($type); |
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} |
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if ($id !== null) { |
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$this->setId($id); |
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} |
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// always mark as used, as these keys are reserved |
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$this->validator->claimUsedFields($fieldNames=['type'], Validator::OBJECT_CONTAINER_TYPE); |
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$this->validator->claimUsedFields($fieldNames=['id'], Validator::OBJECT_CONTAINER_ID); |
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$this->validator->claimUsedFields($fieldNames=['lid'], Validator::OBJECT_CONTAINER_LID); |
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} |
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/** |
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* human api |
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*/ |
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/** |
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* @param string $key |
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* @param mixed $value |
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*/ |
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public function addMeta($key, $value) { |
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if ($this->meta === null) { |
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$this->setMetaObject(new MetaObject()); |
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} |
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$this->meta->add($key, $value); |
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} |
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/** |
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* spec api |
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*/ |
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/** |
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* @param string $type |
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*/ |
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public function setType($type) { |
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$this->type = $type; |
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} |
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/** |
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* @param string|int $id will be casted to a string |
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* |
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* @throws DuplicateException if localId is already set |
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*/ |
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public function setId($id) { |
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if ($this->lid !== null) { |
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throw new DuplicateException('id is not allowed when localId is already set'); |
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} |
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$this->id = (string) $id; |
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} |
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/** |
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* set a local id to connect resources to each other when created on the client |
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* |
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* @note this should not be used to send back from the server to the client |
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* |
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* @param string|int $localId will be casted to a string |
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* |
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* @throws DuplicateException if normal id is already set |
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*/ |
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public function setLocalId($localId) { |
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if ($this->id !== null) { |
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throw new DuplicateException('localId is not allowed when id is already set'); |
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} |
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$this->lid = (string) $localId; |
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} |
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/** |
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* @param MetaObject $metaObject |
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*/ |
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public function setMetaObject(MetaObject $metaObject) { |
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$this->meta = $metaObject; |
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} |
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/** |
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* internal api |
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*/ |
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/** |
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* @internal |
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* |
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* @param ResourceObject $resourceObject |
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* @return ResourceIdentifierObject |
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*/ |
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public static function fromResourceObject(ResourceObject $resourceObject) { |
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$resourceIdentifierObject = new self($resourceObject->type, $resourceObject->primaryId()); |
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if ($resourceObject->meta !== null) { |
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$resourceIdentifierObject->setMetaObject($resourceObject->meta); |
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} |
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return $resourceIdentifierObject; |
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} |
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/** |
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* @internal |
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* |
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* @param ResourceInterface $resource |
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* @return boolean |
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* |
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* @throws Exception if one or both are missing identification |
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*/ |
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public function equals(ResourceInterface $resource) { |
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if ($this->hasIdentification() === false || $resource->getResource()->hasIdentification() === false) { |
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throw new Exception('can not compare resources if identification is missing'); |
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} |
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return ($this->getIdentificationKey() === $resource->getResource()->getIdentificationKey()); |
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} |
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/** |
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* @internal |
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* |
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* @return boolean |
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*/ |
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public function hasIdentification() { |
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return ($this->type !== null && $this->primaryId() !== null); |
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} |
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/** |
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* get a key to uniquely define this resource |
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* |
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* @internal |
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* |
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* @return string |
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* |
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* @throws Exception if type or id is not set yet |
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*/ |
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public function getIdentificationKey() { |
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if ($this->hasIdentification() === false) { |
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throw new Exception('resource has no identification yet'); |
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} |
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return $this->type.'|'.$this->primaryId(); |
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} |
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/** |
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* ObjectInterface |
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*/ |
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/** |
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* @inheritDoc |
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*/ |
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public function isEmpty() { |
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if ($this->type !== null || $this->primaryId() !== null) { |
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return false; |
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} |
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if ($this->meta !== null && $this->meta->isEmpty() === false) { |
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return false; |
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} |
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if ($this->hasAtMembers()) { |
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return false; |
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} |
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return true; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function toArray() { |
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$array = $this->getAtMembers(); |
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$array['type'] = $this->type; |
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if ($this->id !== null) { |
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$array['id'] = $this->id; |
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} |
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elseif ($this->lid !== null) { |
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$array['lid'] = $this->lid; |
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} |
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if ($this->meta !== null && $this->meta->isEmpty() === false) { |
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$array['meta'] = $this->meta->toArray(); |
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} |
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return $array; |
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} |
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/** |
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* ResourceInterface |
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*/ |
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/** |
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* @inheritDoc |
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*/ |
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public function getResource($identifierOnly=false) { |
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return $this; |
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} |
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/** |
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* @internal |
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*/ |
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private function primaryId() { |
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if ($this->lid !== null) { |
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return $this->lid; |
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} |
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return $this->id; |
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} |
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} |
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