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<?php |
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declare(strict_types=1); |
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namespace JMS\Serializer\Handler; |
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use JMS\Serializer\Context; |
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use JMS\Serializer\DeserializationContext; |
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use JMS\Serializer\Exception\NonVisitableTypeException; |
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use JMS\Serializer\Exception\RuntimeException; |
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use JMS\Serializer\GraphNavigatorInterface; |
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use JMS\Serializer\SerializationContext; |
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use JMS\Serializer\Visitor\DeserializationVisitorInterface; |
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use JMS\Serializer\Visitor\SerializationVisitorInterface; |
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final class UnionHandler implements SubscribingHandlerInterface |
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{ |
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private static $aliases = ['boolean' => 'bool', 'integer' => 'int', 'double' => 'float']; |
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/** |
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* {@inheritdoc} |
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*/ |
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public static function getSubscribingMethods() |
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{ |
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$methods = []; |
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$formats = ['json', 'xml']; |
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foreach ($formats as $format) { |
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$methods[] = [ |
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'type' => 'union', |
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'format' => $format, |
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'direction' => GraphNavigatorInterface::DIRECTION_DESERIALIZATION, |
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'method' => 'deserializeUnion', |
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]; |
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$methods[] = [ |
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'type' => 'union', |
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'format' => $format, |
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'direction' => GraphNavigatorInterface::DIRECTION_SERIALIZATION, |
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'method' => 'serializeUnion', |
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]; |
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} |
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return $methods; |
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} |
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public function serializeUnion( |
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SerializationVisitorInterface $visitor, |
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mixed $data, |
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array $type, |
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SerializationContext $context |
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): mixed { |
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if ($this->isPrimitiveType(gettype($data))) { |
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return $this->matchSimpleType($data, $type, $context); |
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} else { |
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$resolvedType = [ |
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'name' => get_class($data), |
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'params' => [], |
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]; |
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return $context->getNavigator()->accept($data, $resolvedType); |
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} |
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} |
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public function deserializeUnion(DeserializationVisitorInterface $visitor, mixed $data, array $type, DeserializationContext $context): mixed |
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{ |
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if ($data instanceof \SimpleXMLElement) { |
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throw new RuntimeException('XML deserialisation into union types is not supported yet.'); |
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} |
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if (3 === count($type['params'])) { |
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$lookupField = $type['params'][1]; |
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if (empty($data[$lookupField])) { |
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throw new NonVisitableTypeException(sprintf('Union Discriminator Field "%s" not found in data', $lookupField)); |
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} |
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$unionMap = $type['params'][2]; |
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$lookupValue = $data[$lookupField]; |
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if (empty($unionMap[$lookupValue])) { |
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throw new NonVisitableTypeException(sprintf('Union Discriminator Map does not contain key "%s"', $lookupValue)); |
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} |
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$finalType = [ |
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'name' => $unionMap[$lookupValue], |
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'params' => [], |
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]; |
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return $context->getNavigator()->accept($data, $finalType); |
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} |
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foreach ($type['params'][0] as $possibleType) { |
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if ($this->isPrimitiveType($possibleType['name']) && $this->testPrimitive($data, $possibleType['name'], $context->getFormat())) { |
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return $context->getNavigator()->accept($data, $possibleType); |
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} |
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} |
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return null; |
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} |
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private function matchSimpleType(mixed $data, array $type, Context $context): mixed |
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{ |
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foreach ($type['params'][0] as $possibleType) { |
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if ($this->isPrimitiveType($possibleType['name']) && !$this->testPrimitive($data, $possibleType['name'], $context->getFormat())) { |
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continue; |
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} |
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try { |
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return $context->getNavigator()->accept($data, $possibleType); |
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} catch (NonVisitableTypeException $e) { |
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continue; |
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} |
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} |
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return null; |
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} |
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private function isPrimitiveType(string $type): bool |
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{ |
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return in_array($type, ['int', 'integer', 'float', 'double', 'bool', 'boolean', 'string'], true); |
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} |
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private function testPrimitive(mixed $data, string $type, string $format): bool |
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{ |
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switch ($type) { |
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case 'integer': |
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case 'int': |
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return (string) (int) $data === (string) $data; |
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case 'double': |
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case 'float': |
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return (string) (float) $data === (string) $data; |
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case 'bool': |
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case 'boolean': |
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return (string) (bool) $data === (string) $data; |
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case 'string': |
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return (string) $data === (string) $data; |
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} |
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return false; |
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} |
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} |
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schmittjoh /
serializer
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