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<?php |
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/** |
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* HashHandler class file |
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*/ |
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namespace Graviton\DocumentBundle\Serializer\Handler; |
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use JMS\Serializer\Context; |
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use JMS\Serializer\JsonDeserializationVisitor; |
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use JMS\Serializer\JsonSerializationVisitor; |
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use Graviton\DocumentBundle\Entity\Hash; |
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use Symfony\Component\HttpFoundation\RequestStack; |
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/** |
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* Hash handler for JMS serializer |
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* |
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* @author List of contributors <https://github.com/libgraviton/graviton/graphs/contributors> |
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* @license https://opensource.org/licenses/MIT MIT License |
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* @link http://swisscom.ch |
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*/ |
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class HashHandler |
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{ |
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/** |
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* @var RequestStack |
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*/ |
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private $requestStack; |
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/** |
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* @var array |
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*/ |
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private $seenCounter = []; |
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/** |
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* @var null|object |
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*/ |
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private $currentRequestContent = null; |
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/** |
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* HashHandler constructor. |
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* |
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* @param RequestStack $requestStack request stack |
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*/ |
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public function __construct(RequestStack $requestStack) |
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{ |
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$this->requestStack = $requestStack; |
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} |
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/** |
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* Serialize Hash object |
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* |
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* @param JsonSerializationVisitor $visitor Visitor |
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* @param Hash $data Data |
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* @param array $type Type |
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* @param Context $context Context |
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* @return Hash |
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*/ |
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public function serializeHashToJson( |
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JsonSerializationVisitor $visitor, |
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Hash $data, |
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array $type, |
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Context $context |
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) { |
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return new Hash($data); |
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} |
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/** |
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* Deserialize Hash object |
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* |
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* @param JsonDeserializationVisitor $visitor Visitor |
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* @param array $data Data |
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* @param array $type Type |
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* @param Context $context Context |
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* @return Hash |
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*/ |
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public function deserializeHashFromJson( |
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JsonDeserializationVisitor $visitor, |
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array $data, |
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array $type, |
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Context $context |
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) { |
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$currentPath = $context->getCurrentPath(); |
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$currentRequestContent = $this->getCurrentRequestContent(); |
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$dataObj = null; |
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if (!is_null($currentRequestContent)) { |
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$dataObj = $currentRequestContent; |
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foreach ($currentPath as $pathElement) { |
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if (isset($dataObj->{$pathElement})) { |
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$dataObj = $dataObj->{$pathElement}; |
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} else { |
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$dataObj = null; |
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break; |
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} |
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} |
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} |
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if (!is_null($dataObj)) { |
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if ($this->isSequentialArrayCase($dataObj, $data)) { |
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$dataObj = $dataObj[$this->getLocationCounter($currentPath)]; |
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} |
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$data = $dataObj; |
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} |
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return new Hash($visitor->visitArray((array) $data, $type, $context)); |
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} |
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/** |
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* returns the json_decoded content of the current request. if there is no request, it |
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* will return null |
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* |
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* @return mixed|null|object the json_decoded request content |
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*/ |
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private function getCurrentRequestContent() |
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{ |
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$currentRequest = $this->requestStack->getCurrentRequest(); |
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if (!is_null($currentRequest)) { |
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$this->currentRequestContent = json_decode($currentRequest->getContent()); |
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} |
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return $this->currentRequestContent; |
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} |
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/** |
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* this checks for a special case which this new approach is really flawed. if this |
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* handler is used to deserialize an array, we are not aware of the current index in the iteration. |
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* so we record for what we have been called how many times ($this->seenCounter) and |
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* if this function here returns true, we only return the index specified by the seencounter. |
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* |
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* we assume that we are in this special case when the userData (the one parsed from the request) |
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* has sequential keys *and* they are different from the keys that the serializer data gives us. |
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* |
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* @param array $userArr data from users request |
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* @param array $serializerArr data from the serializer |
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* |
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* @return bool true if yes, false otherwise |
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*/ |
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private function isSequentialArrayCase($userArr, $serializerArr) |
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{ |
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return ( |
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is_array($userArr) && |
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(array_keys($userArr) == range(0, count($userArr) - 1)) && |
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array_keys($userArr) != array_keys($serializerArr) |
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); |
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} |
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/** |
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* convenience function for the location counting for the "sequential array case" as described above. |
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* |
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* @param array $location the current path from the serializer |
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* |
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* @return int the counter |
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*/ |
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private function getLocationCounter($location) |
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{ |
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$locationHash = md5(implode(',', $location)); |
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if (!isset($this->seenCounter[$locationHash])) { |
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$this->seenCounter[$locationHash] = 0; |
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} else { |
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$this->seenCounter[$locationHash]++; |
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} |
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return $this->seenCounter[$locationHash]; |
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} |
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} |
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libgraviton /
graviton
