symfony
diff --git a/‎src/Symfony/Component/Serializer/CHANGELOG.md
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diff --git a/‎src/Symfony/Component/Serializer/Normalizer/AbstractNormalizer.php
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diff --git a/‎src/Symfony/Component/Serializer/Tests/Normalizer/ObjectNormalizerTest.php
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+20Lines changed: 20 additions & 0 deletions b/‎src/Symfony/Component/Serializer/Tests/Normalizer/ObjectNormalizerTest.php
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@@ -6,6 +6,8 @@ CHANGELOG
 
 * added `IncompleteInputDataException` new exception for deserialization failure
   of objects that needs data insertion in constructor
+* added an optional `empty_data` option of context to specify a default data in
+  case the object is not initializable by its constructor because of data missing
 
 4.0.0
 -----
 
@@ -37,6 +37,7 @@ abstract class AbstractNormalizer implements NormalizerInterface, DenormalizerIn
     const GROUPS = 'groups';
     const ATTRIBUTES = 'attributes';
     const ALLOW_EXTRA_ATTRIBUTES = 'allow_extra_attributes';
+    const EMPTY_DATA = 'empty_data';
 
     /**
      * @var int
@@ -358,6 +359,9 @@ protected function instantiateObject(array &$data, $class, array &$context, \Ref
                 } elseif ($constructorParameter->isDefaultValueAvailable()) {
                     $params[] = $constructorParameter->getDefaultValue();
                 } else {
+                    if (isset($context[static::EMPTY_DATA][$class])) {
+                        return $context[static::EMPTY_DATA][$class];
+                    }
                     throw new IncompleteInputDataException(
                         sprintf(
                             'Cannot create an instance of %s from serialized data because its constructor requires parameter "%s" to be present.',
 
@@ -219,6 +219,26 @@ public function testConstructorWithMissingData()
         $normalizer->denormalize($data, DummyValueObject::class);
     }
 
+    public function testFillWithEmptyDataWhenMissingData()
+    {
+        $data = array(
+            'foo' => 10,
+        );
+
+        $normalizer = new ObjectNormalizer();
+        $serializer = new Serializer(array($normalizer));
+        $normalizer->setSerializer($serializer);
+
+        $empty = new DummyValueObject('', '');
+        $result = $normalizer->denormalize($data, DummyValueObject::class, 'json', array(
+            'empty_data' => array(
+                DummyValueObject::class => $empty,
+            ),
+        ));
+
+        $this->assertEquals($empty, $result);
+    }
+
     public function testGroupsNormalize()
     {
         $classMetadataFactory = new ClassMetadataFactory(new AnnotationLoader(new AnnotationReader()));