[Validator] fixed the static method loader to not repeat the loading when the static method is in the parent classes

src/Symfony/Component/Validator/Mapping/Loader/StaticMethodLoader.php

@@ -37,6 +37,10 @@ class StaticMethodLoader implements LoaderInterface
                 throw new MappingException(sprintf('The method %s::%s should be static', $reflClass->getName(), $this->methodName));
             }
 
+            if ($reflMethod->getDeclaringClass()->getName() != $reflClass->getName()) {
+                return false;
+            }
+
             $reflMethod->invoke(null, $metadata);
 
             return true;
@@ -44,4 +48,4 @@ class StaticMethodLoader implements LoaderInterface
 
         return false;
     }
-}
+}

tests/Symfony/Tests/Component/Validator/Mapping/Loader/StaticMethodLoaderTest.php

@@ -4,6 +4,7 @@ namespace Symfony\Tests\Component\Validator\Mapping\Loader;
 
 use Symfony\Component\Validator\Mapping\ClassMetadata;
 use Symfony\Component\Validator\Mapping\Loader\StaticMethodLoader;
+use Symfony\Component\Validator\Constraints\NotNull;
 
 class StaticMethodLoaderTest extends \PHPUnit_Framework_TestCase
 {
@@ -32,6 +33,19 @@ class StaticMethodLoaderTest extends \PHPUnit_Framework_TestCase
 
         $this->assertEquals(StaticLoaderEntity::$invokedWith, $metadata);
     }
+
+    public function testLoadClassMetadataDoesNotRepeatLoadWithParentClasses()
+    {
+        $loader = new StaticMethodLoader('loadMetadata');
+        $metadata = new ClassMetadata(__NAMESPACE__.'\StaticLoaderDocument');
+        $loader->loadClassMetadata($metadata);
+        $this->assertSame(0, count($metadata->getConstraints()));
+
+        $loader = new StaticMethodLoader('loadMetadata');
+        $metadata = new ClassMetadata(__NAMESPACE__.'\BaseStaticLoaderDocument');
+        $loader->loadClassMetadata($metadata);
+        $this->assertSame(1, count($metadata->getConstraints()));
+    }
 }
 
 class StaticLoaderEntity
@@ -43,3 +57,15 @@ class StaticLoaderEntity
         self::$invokedWith = $metadata;
     }
 }
+
+class StaticLoaderDocument extends BaseStaticLoaderDocument
+{
+}
+
+class BaseStaticLoaderDocument
+{
+    static public function loadMetadata(ClassMetadata $metadata)
+    {
+        $metadata->addConstraint(new NotNull());
+    }
+}