Hi folks, just a quick reminder that James and I are running this presentation on v2 and live REPL session in a few hours' time (in case you were interested to join previously and now find yourself available!) :) https://clojurians.slack.com/archives/CG3AM2F7V/p1702647335864769

Hey there, I’m running the docker image from

(with-open [node (xtc/start-client "")]
              (xt/submit-tx node
                            (xt/put :companies {:company/name "Test" :xt/id 1})))

14:30:08 | WARN  xtdb.server | response error
clojure.lang.ExceptionInfo: Request coercion failed: #reitit.coercion.CoercionError{:spec #Spec{:form (clojure.spec.alpha/keys :req-un [:xtdb.server/tx-ops] :opt-un [:xtdb.server/opts]), :type :map, :leaf? false}, :problems {:clojure.spec.alpha/problems ({:path [:tx-ops], :pred clojure.core/vector?, :val #xt.tx/put {:table-name :companies, :doc {:company/name "Test", :xt/id 1}, :valid-from nil, :valid-to nil}, :via [:xtdb.server/tx-ops], :in [:tx-ops]}), :clojure.spec.alpha/spec #Spec{:form (clojure.spec.alpha/keys :req-un [:xtdb.server/tx-ops] :opt-un [:xtdb.server/opts]), :type :map, :leaf? false}, :clojure.spec.alpha/value {:opts {}, :tx-ops #xt.tx/put {:table-name :companies, :doc {:company/name "Test", :xt/id 1}, :valid-from nil, :valid-to nil}}}}

Another noob question if you don’t mind:

(with-open [node (xtc/start-client "")]
  (xt/submit-tx node
                [(xt/put :companies {:company/name "Test" :xt/id 1})])
  (xt/q node '(from :companies [:company/name])))

[{}]

[{:company/name "Test}]

With the XTQL, I am slightly puzzled by the threaded forms using the from function. If you build up a set of functions that in effect make up the parts of the query, does this rely on a lazy model to know what to pass down the threaded functions. It looks rather strange when compared with a sub query as in that case the sub query probably fires first and then the outer query, but in the threaded forms I have seen it does not seem to apply that way, or am I missing something?

Just doing final sound checks, and then we'll be kicking off - see you soon!

A document containing a map with string key

(with-open [node (xtc/start-client "")]
    (xt/submit-tx node
                  [(xt/put :companies {:company/name {:foo {"123" :bar}} :xt/id 1})])
    (xt/q node '(from :companies [company/name])))

15:44:24 | WARN  xtdb.server | response error
java.lang.UnsupportedOperationException: Arrow maps currently not supported
	at xtdb.vector.writer$eval11557$fn__11558.invoke(writer.clj:716)
	at xtdb.vector.writer$eval11002$fn__11027$G__10991__11032.invoke(writer.clj:36)
	at xtdb.vector.writer$eval11557$fn__11562.invoke(writer.clj:741)
	at xtdb.vector.writer$eval11002$fn__11014$G__10993__11021.invoke(writer.clj:36)
	at xtdb.vector.writer$eval11557$fn__11562.invoke(writer.clj:742)