Hi, I've been exploring some of the calcite code -- in particular, the mongo-adapter -- and I cannot seem to figure out where the translation from a sql-like query to a mongo pipeline is actually taking place (in the mongo adapter test code). I've tracked the untranslated sql through the CalciteAssert code and can't figure out where the conversion is actually happening. I can see how the relational algebra gets used to build up the mongo pipeline, but I don't see where code that constructs the pipeline is active in the test code.
Following up on the above, (1a) What would be the best way to do sql->mongo translation using existing code? (1b) If (1a) is not a sensible approach and the mongo-adapter pipeline-building capability cannot be factored out, what would be the most sensible approach to hand-rolling sql->mongo translation? Thanks, Jack
