Hey Guillaume, 2013/11/14 Guillaume SCHEIBEL <guillaume.scheibel(a)gmail.com&gt; That's a very interesting topic. I haven't yet really looked into the aggregation framework. Just from a very quick look it might be helpful for mapping certain query constructs (group by). It may be a possible first step to run aggregations as "native queries". Do you have any particular use case or scenario in mind where an integration would be useful and which kind of support you have in mind? What would such a DSL do? Would it be for building aggregation operations in a safe manner?