fix compatibility with Doctrine ORM 4

Author: xabbuh

Tests/Validator/Constraints/UniqueEntityValidatorTest.php

@@ -16,6 +16,7 @@
 use Doctrine\ORM\EntityRepository;
 use Doctrine\ORM\Mapping\ClassMetadata;
 use Doctrine\ORM\Mapping\ClassMetadataInfo;
+use Doctrine\ORM\Mapping\PropertyAccessors\RawValuePropertyAccessor;
 use Doctrine\ORM\Tools\SchemaTool;
 use Doctrine\Persistence\ManagerRegistry;
 use Doctrine\Persistence\ObjectManager;
@@ -115,11 +116,21 @@ class_exists(ClassMetadataInfo::class) ? ClassMetadataInfo::class : ClassMetadat
             ->willReturn(true)
         ;
         $refl = $this->createMock(\ReflectionProperty::class);
+        $refl
+            ->method('getName')
+            ->willReturn('name')
+        ;
         $refl
             ->method('getValue')
             ->willReturn(true)
         ;
-        $classMetadata->reflFields = ['name' => $refl];
+
+        if (property_exists(ClassMetadata::class, 'propertyAccessors')) {
+            $classMetadata->propertyAccessors['name'] = RawValuePropertyAccessor::fromReflectionProperty($refl);
+        } else {
+            $classMetadata->reflFields = ['name' => $refl];
+        }
+
         $em->expects($this->any())
             ->method('getClassMetadata')
             ->willReturn($classMetadata)

Validator/Constraints/UniqueEntityValidator.php

@@ -11,6 +11,7 @@
 
 namespace Symfony\Bridge\Doctrine\Validator\Constraints;
 
+use Doctrine\ORM\Mapping\ClassMetadata as OrmClassMetadata;
 use Doctrine\Persistence\ManagerRegistry;
 use Doctrine\Persistence\Mapping\ClassMetadata;
 use Doctrine\Persistence\ObjectManager;
@@ -92,7 +93,11 @@ public function validate(mixed $entity, Constraint $constraint)
                 throw new ConstraintDefinitionException(sprintf('The field "%s" is not mapped by Doctrine, so it cannot be validated for uniqueness.', $fieldName));
             }
 
-            $fieldValue = $class->reflFields[$fieldName]->getValue($entity);
+            if (property_exists(OrmClassMetadata::class, 'propertyAccessors')) {
+                $fieldValue = $class->propertyAccessors[$fieldName]->getValue($entity);
+            } else {
+                $fieldValue = $class->reflFields[$fieldName]->getValue($entity);
+            }
 
             if (null === $fieldValue && $this->ignoreNullForField($constraint, $fieldName)) {
                 $hasIgnorableNullValue = true;