relation_completer progress

source/core/object/relation_endpoint.cpp

@@ -32,4 +32,12 @@ bool relation_endpoint::is_has_many() const {
 bool relation_endpoint::is_belongs_to() const {
   return type_ == relation_type::BELONGS_TO;
 }
+
+std::shared_ptr<relation_endpoint> relation_endpoint::foreign_endpoint() const {
+    return foreign_endpoint_;
+}
+
+void relation_endpoint::link_foreign_endpoint( const std::shared_ptr<relation_endpoint>& endpoint ) {
+    foreign_endpoint_ = endpoint;
+}
 }