- Merge latest commits and added virtual closures too

src/Repository/RelationBuilder.php

@@ -45,11 +45,27 @@ class RelationBuilder
                 return $dataset;
             }
 
-            return $this->resolveRelation($name);
+            return $this->resolveRelation($name) ?: $this->resolveVirtual($name);
+        }
+        else {
+            return $this->instanciateEmptyObject($name, $this->resolver->searchFieldAnnotation($name, new Relation() ));
         }
     }
 
-    protected function resolveRelation(string $name) /* : object|EntityCollection */
+    protected function resolveVirtual(string $name) /* : bool|object|EntityCollection */
+    {
+        if (null !== ($virtual = $this->resolver->searchFieldAnnotation($name, new Annotation\Property\Virtual()))) {
+            if ($virtual->closure ?? false) {
+                return call_user_func_array($virtual->closure, [ $this->entity ]);
+            }
+
+            return call_user_func_array([ $this->entity, $virtual->method ], [ $this->entity ]);
+        }
+
+        return false;
+    }
+
+    protected function resolveRelation(string $name) /* : bool|object|EntityCollection */
     {
         if ( null !== ( $relation = $this->resolver->searchFieldAnnotation($name, new Relation() ) ) ) {
             $this->orders = $this->resolver->searchFieldAnnotationList($name, new OrderBy() );
@@ -139,6 +155,25 @@ class RelationBuilder
         return new $class();
     }
 
+
+    protected function instanciateEmptyObject(string $name, Relation $relation) : object
+    {
+        switch( true ) {
+            case $relation->isOneToOne():
+                return $this->instanciateEmptyEntity($name, $relation);
+
+            case $relation->isOneToMany():
+                return ($relation->entity ?? $this->resolver->properties[$name]['type'])::entityCollection();
+
+            case $relation->isManyToMany():
+                extract($this->relationAnnotations($name, $relation));
+
+                return $relation->bridgeField ?? false ? $relation->bridge::entityCollection() : $relationRelation->entity::entityCollection();
+        }
+
+        return new $class();
+    }
+
     protected function fetchFromDataset($name, ? array $data = null) /* object|bool */
     {
         $annotation = $this->resolver->searchFieldAnnotation($name, new Annotation\Property\Join) ?: