column generator progress

source/orm/query/generator.cpp

@@ -30,7 +30,10 @@ void placeholder_generator::on_revision(const char* /*id*/, uint64_t&) {
   result_.emplace_back(utils::_);
 }
 
+column_value_generator::column_value_generator(column_value_generator_options options)
+: options_(options) {}
+
 void column_value_generator::on_revision(const char* id, uint64_t& x) {
-  result_.emplace_back(id, x);
+  push_back(id, x);
 }
 }