Filter clauses fail on `Cons` expressions

[quoll]

Filters are expected as PersistentLists, and fail otherwise.

With a list:

(let [fclause (list '= '?v 5)]
  (f/format-query {:prefixes {:ex "<http://ex.com/>"}
                   :select '[?e]
                   :where ['[?e :ex/value ?v]
                           [:filter fclause]]}))

Returns: "PREFIX ex: <http://ex.com/> SELECT ?e WHERE { ?e ex:value ?v . FILTER (?v = 5) }"

---

With a cons seq:

(let [fclause (cons '= '(?v 5))]
  (f/format-query {:prefixes {:ex "<http://ex.com/>"}
                   :select '[?e]
                   :where ['[?e :ex/value ?v]
                           [:filter fclause]]}))

Comes back with:

Execution error (ExceptionInfo) at com.yetanalytics.flint/conform-sparql (flint.cljc:44).
Syntax errors exist in the WHERE clause!

[milt]

We're doing a predicate check that is too narrow I'd wager like list?

[milt]

Yeah, looks like here: https://github.com/yetanalytics/flint/blob/main/src/main/com/yetanalytics/flint/spec/expr.cljc#L333-L341 I don't think that would pass on the result of cons.

[milt]

This should also be resolved in v0.3.1. Thanks again!