dsl seems to parse a thing :exists
as an operator, but it's not documented. This sounds like a missing feature we've wanted... is it true?
Good catch on the missing docs. There was some discussion on the list when it was implemented, see https://github.com/cerner/clara-rules/issues/130 for details.
good find on the relevant issue
@claudius.nicolae We are going to start heavily using clara-eav, and we have three big pieces of functionality to contribute back.
Will you be at Clojure/conj?