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<?php |
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declare(strict_types=1); |
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namespace LibraryCatalog\Transformer; |
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use LibraryCatalog\Transformer\Encoder\EncoderInterface; |
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use LibraryCatalog\Transformer\Serializer\Exception; |
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use LibraryCatalog\Transformer\Serializer\HydrateException; |
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class Serializer |
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{ |
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/** @var EncoderInterface */ |
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protected $encoder; |
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/** |
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* Serializer constructor. |
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* @param EncoderInterface $encoder |
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*/ |
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public function __construct(EncoderInterface $encoder) |
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{ |
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$this->encoder = $encoder; |
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} |
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/** |
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* @param $data |
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* @return string |
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* @throws Encoder\Exception |
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* @throws HydrateException |
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*/ |
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public function serialize($data): string |
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{ |
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if (!is_object($data)) { |
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throw new HydrateException(); |
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} |
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return $this->encoder->encode($this->normalizeObject($data)); |
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} |
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/** |
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* @param string $value |
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* @param string $classname |
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* @return object |
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* @throws Encoder\Exception |
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* @throws Exception |
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* @throws HydrateException |
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*/ |
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public function deserialize(string $value, string $classname = ''): object |
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{ |
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$data = $this->encoder->decode($value); |
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if (!is_array($data)) { |
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throw new Exception("Not valid input data"); |
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} |
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return $this->hydrate($data, $classname); |
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} |
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/** |
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* Extract all public fields (but not arrays and objects). |
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* |
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* @param object $object |
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* @return array |
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*/ |
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public function extractFields(object $object): array |
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{ |
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$res = get_object_vars($object); |
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foreach ($res as $key => $value) { |
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if (is_array($value) || is_object($value)) { |
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unset($res[$key]); |
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} |
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} |
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return $res; |
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} |
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/** |
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* @param array $data |
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* @param string $classname |
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* @return mixed |
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* @throws HydrateException |
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*/ |
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public function hydrate(array $data, string $classname = '') |
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{ |
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try { |
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if ($classname != '') { |
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$object = new $classname(); |
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} elseif (isset($data['__cn'])) { |
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$object = new $data['__cn'](); |
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} else { |
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$object = []; |
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} |
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} catch (\Error $e) { |
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throw new HydrateException($e->getMessage()); |
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} |
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if (isset($data['__cn'])) { |
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unset($data['__cn']); |
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} |
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foreach ($data as $key => $value) { |
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if (is_array($value)) { |
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if (is_array($object)) { |
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$object[$key] = $this->hydrate($value, ''); |
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} else { |
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$object->{$key} = $this->hydrate($value, ''); |
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} |
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} else { |
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$object->{$key} = $value; |
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} |
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} |
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return $object; |
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} |
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/** |
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* @param $data |
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* @return mixed |
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*/ |
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protected function normalizeObject($data) |
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{ |
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if (is_object($data)) { |
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$data->__cn = get_class($data); |
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foreach ($data as $key => $value) { |
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if (is_object($value)) { |
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$data->{$key} = $this->normalizeObject($value); |
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} elseif (is_array($value)) { |
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$data->{$key} = []; |
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foreach ($value as $keyIn => $valueIn) { |
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$data->{$key}[$keyIn] = $this->normalizeObject($valueIn); |
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} |
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} |
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} |
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} |
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return $data; |
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} |
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} |
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alex-foleon /
service-library-catalog-php
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