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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Serializer\Mapping;
use Symfony\Component\Serializer\Mapping\Factory\ClassMetadataFactoryInterface;
/**
* @author Samuel Roze <samuel.roze@gmail.com>
*/
class ClassDiscriminatorFromClassMetadata implements ClassDiscriminatorResolverInterface
{
/**
* @var ClassMetadataFactoryInterface
*/
private $classMetadataFactory;
private $mappingForMappedObjectCache = [];
public function __construct(ClassMetadataFactoryInterface $classMetadataFactory)
{
$this->classMetadataFactory = $classMetadataFactory;
}
/**
* {@inheritdoc}
*/
public function getMappingForClass(string $class): ?ClassDiscriminatorMapping
{
if ($this->classMetadataFactory->hasMetadataFor($class)) {
return $this->classMetadataFactory->getMetadataFor($class)->getClassDiscriminatorMapping();
}
return null;
}
/**
* {@inheritdoc}
*/
public function getMappingForMappedObject($object): ?ClassDiscriminatorMapping
{
if ($this->classMetadataFactory->hasMetadataFor($object)) {
$metadata = $this->classMetadataFactory->getMetadataFor($object);
if (null !== $metadata->getClassDiscriminatorMapping()) {
return $metadata->getClassDiscriminatorMapping();
}
}
$cacheKey = \is_object($object) ? \get_class($object) : $object;
if (!\array_key_exists($cacheKey, $this->mappingForMappedObjectCache)) {
$this->mappingForMappedObjectCache[$cacheKey] = $this->resolveMappingForMappedObject($object);
}
return $this->mappingForMappedObjectCache[$cacheKey];
}
/**
* {@inheritdoc}
*/
public function getTypeForMappedObject($object): ?string
{
if (null === $mapping = $this->getMappingForMappedObject($object)) {
return null;
}
return $mapping->getMappedObjectType($object);
}
private function resolveMappingForMappedObject($object)
{
$reflectionClass = new \ReflectionClass($object);
if ($parentClass = $reflectionClass->getParentClass()) {
return $this->getMappingForMappedObject($parentClass->getName());
}
foreach ($reflectionClass->getInterfaceNames() as $interfaceName) {
if (null !== ($interfaceMapping = $this->getMappingForMappedObject($interfaceName))) {
return $interfaceMapping;
}
}
return null;
}
}
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