Allow JDBCDataStore to work against a generic GroupByVisitor

Description

Right now GroupByVisitor allows to compute and group on generic expressions, but JDCBDataStore does not really work unless they are property names, with the occasional exception for functions, but only on the computation side.
Make things simpler and linear instead, if the filter capabilties support an expressionm, whatever its contents are, use it, instead.

Environment

None

Assignee

Andrea Aime

Reporter

Andrea Aime

Triage

None

Components

Fix versions

Priority

Medium
Configure