feat: add doctrine/orm v3 compatibility

Author: bpolaszek

composer.json

@@ -29,7 +29,7 @@
   },
   "require-dev": {
     "doctrine/annotations": "^2.0",
-    "doctrine/orm": "^2.9",
+    "doctrine/orm": "^2.9|^3.0",
     "matthiasnoback/symfony-dependency-injection-test": "^4.3 || ^5.0",
     "nyholm/psr7": "^1.5.1",
     "php-cs-fixer/shim": "^3.14",

src/Services/MeilisearchService.php

@@ -4,7 +4,7 @@
 
 namespace Meilisearch\Bundle\Services;
 
-use Doctrine\Common\Util\ClassUtils;
+use Doctrine\ORM\Proxy\DefaultProxyClassNameResolver;
 use Doctrine\Persistence\ObjectManager;
 use Meilisearch\Bundle\Collection;
 use Meilisearch\Bundle\Engine;
@@ -18,6 +18,8 @@
 use Symfony\Component\PropertyAccess\PropertyAccessorInterface;
 use Symfony\Component\Serializer\Normalizer\NormalizerInterface;
 
+use function class_exists;
+
 final class MeilisearchService implements SearchService
 {
     private NormalizerInterface $normalizer;
@@ -236,7 +238,7 @@ private function getBaseClassName($objectOrClass): string
         }
 
         if (is_object($objectOrClass)) {
-            return ClassUtils::getClass($objectOrClass);
+            return self::resolveClass($objectOrClass);
         }
 
         return $objectOrClass;
@@ -306,7 +308,7 @@ private function getAggregatorsFromEntities(ObjectManager $objectManager, array
         $aggregators = [];
 
         foreach ($entities as $entity) {
-            $entityClassName = ClassUtils::getClass($entity);
+            $entityClassName = self::resolveClass($entity);
             if (array_key_exists($entityClassName, $this->entitiesAggregators)) {
                 foreach ($this->entitiesAggregators[$entityClassName] as $aggregator) {
                     $aggregators[] = new $aggregator(
@@ -367,4 +369,22 @@ private function assertIsSearchable(string $className): void
             throw new Exception('Class '.$className.' is not searchable.');
         }
     }
+
+    private static function resolveClass(object $object): string
+    {
+        static $resolver;
+
+        $resolver ??= (function () {
+
+            // Doctrine ORM v3+ compatibility
+            if (class_exists(DefaultProxyClassNameResolver::class)) {
+                return fn (object $object) => DefaultProxyClassNameResolver::getClass($object);
+            }
+
+            // Legacy Doctrine ORM compatibility
+            return fn (object $object) => \Doctrine\Common\Util\ClassUtils::getClass($object);
+        })();
+
+        return $resolver($object);
+    }
 }