collection resolver progress

source/orm/query/internal/query_result_impl.cpp

@@ -39,6 +39,16 @@ query_result_impl::on_attribute(const char *id, utils::value &val, const utils::
   reader_->read_value(id, column_index_++, val, attr.size());
 }
 
+bool query_result_impl::fetch(record &rec) {
+  if (auto fetched = reader_->fetch(); !fetched.is_ok() || !*fetched) {
+    return false;
+  }
+
+  column_index_ = reader_->start_column_index();
+  access::process(*this, rec);
+  return true;
+}
+
 const std::vector<object::attribute> &query_result_impl::prototype() const {
   return prototype_;
 }