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<?php |
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/** |
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* Class for exclusion strategies. |
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*/ |
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namespace Graviton\RestBundle\ExclusionStrategy; |
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use JMS\Serializer\Exclusion\ExclusionStrategyInterface; |
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use JMS\Serializer\Metadata\ClassMetadata; |
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use JMS\Serializer\Metadata\PropertyMetadata; |
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use JMS\Serializer\Context; |
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use Symfony\Component\HttpFoundation\RequestStack; |
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use Xiag\Rql\Parser\Query; |
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/** |
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* In this Strategy we skip all properties on first level who are not selected if there is a select in rql. |
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* |
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* @author List of contributors <https://github.com/libgraviton/graviton/graphs/contributors> |
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* @license http://opensource.org/licenses/gpl-license.php GNU Public License |
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* @link http://swisscom.ch |
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*/ |
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class SelectExclusionStrategy implements ExclusionStrategyInterface |
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{ |
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/** |
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* @var Array $selectedFields |
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*/ |
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protected $selectedFields; |
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/** |
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* @var Boolean $isSelect |
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*/ |
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protected $isSelect; |
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/** |
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* Injection of the global request_stack to access the selected Fields via Query-Object |
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* @param RequestStack $requestStack the global request_stack |
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* @return void |
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*/ |
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public function getSelectedFieldsFromRQL(RequestStack $requestStack) |
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{ |
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$currentRequest = $requestStack->getCurrentRequest(); |
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$this->selectedFields = []; |
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$this->isSelect = false; |
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if ($currentRequest) { |
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$rqlQuery = $currentRequest->get('rqlQuery'); |
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if ($rqlQuery && $rqlQuery instanceof Query) { |
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$select = $rqlQuery->getSelect(); |
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if ($select) { |
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$this->isSelect = true; |
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$this->selectedFields = $select->getFields(); |
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// get the nested fields as well |
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$nestedFields = []; |
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foreach ($this->selectedFields as $key => $field) { |
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if (strstr($field, '.')) { |
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$nestedFields=array_merge($nestedFields, explode('.', $field)); |
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unset($this->selectedFields[$key]); |
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} |
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} |
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$this->selectedFields = array_merge($this->selectedFields, $nestedFields); |
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// id is always included in response (bug/feature)? |
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if (! in_array('id', $this->selectedFields)) { |
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$this->selectedFields[] = 'id'; |
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}; |
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} |
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} |
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} |
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} |
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/** |
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* @InheritDoc: Whether the class should be skipped. |
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* @param ClassMetadata $metadata the ClassMetadata for the Class of the property to be serialized |
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* @param Context $navigatorContext the context for serialization |
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* @return boolean |
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*/ |
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public function shouldSkipClass(ClassMetadata $metadata, Context $navigatorContext) |
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{ |
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return false; |
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} |
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/** |
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* @InheritDoc: Whether the property should be skipped. |
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* Skipping properties on first level who are not selected if there is a select in rql. |
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* @param PropertyMetadata $property the property to be serialized |
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* @param Context $context the context for serialization |
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* @return boolean |
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*/ |
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public function shouldSkipProperty(PropertyMetadata $property, Context $context) |
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{ |
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// we are only dealing with the first level of the JSON here |
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if ($context->getDepth() > 1) { |
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return false; |
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} |
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// nothing selected, default serialization |
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if (! $this->isSelect) { |
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return false; |
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} |
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return ! in_array($property->name, $this->selectedFields); |
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} |
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} |
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libgraviton /
graviton
