implemented lazy loading for object_ptr and belongs_to

backends/postgres/src/postgres_connection.cpp

@@ -109,7 +109,9 @@ utils::result<std::unique_ptr<sql::query_result_impl>, utils::error> postgres_co
     prototype.at(i).change_type(type);
   }
 
-  return utils::ok(std::make_unique<sql::query_result_impl>(std::make_unique<postgres_result_reader>(res), prototype));
+  return utils::ok(std::make_unique<sql::query_result_impl>(std::make_unique<postgres_result_reader>(res),
+                                                                    std::move(prototype),
+                                                                    context.resolver_factory));
 }
 
 std::string postgres_connection::generate_statement_name(const sql::query_context &query) {

backends/postgres/src/postgres_statement.cpp

@@ -60,7 +60,7 @@ utils::result<std::unique_ptr<sql::query_result_impl>, utils::error> postgres_st
     return utils::failure(make_error(sql::error_code::FETCH_FAILED, res, db_, "Failed to fetch statement", query_.sql));
   }
 
-  return utils::ok(std::make_unique<sql::query_result_impl>(std::make_unique<postgres_result_reader>(res), query_.prototype));
+  return utils::ok(std::make_unique<sql::query_result_impl>(std::make_unique<postgres_result_reader>(res), query_.prototype, query_.resolver_factory));
 }
 
 std::unique_ptr<utils::attribute_writer> postgres_statement::create_binder() const {