deleted my m2, same problem. when checking netstat, i do not see the datomic ports in use... however i can still do (get-database-names "...") . some part of transactor is just not happening 😞

ClassNotFound definitely suggests class

A classpath issue

The get-database-names call doesn't require communication with the transactor

I'd look at the transactor logs, possible you may find underlying issue there

@georgek ditto ^ do you see anything in transactor logs?

@robert-stuttaford #uri complains RuntimeException No reader function for tag uri clojure.lang.LispReader$CtorReader.readTagged

@jaret (java.net.URI. ") works from datomic REPL, but 500 for curl ;(

BTW: is there a way to get more meaningfull errors than 500 to anything that is wrong with REST service? it is rather annoying 😐

coulda sworn there was one for java.net.URI

will check quickly how about curling #uri

nope, 500 😞

@robert-stuttaford i tried #uri from datomic repl

maybe it is available in a full env...

but i need to use REST endpoint, at least for now….

also found Stuart Halloway mentioning that URI is a memory hog… so maybe best practice is to actually avoid that and use strings?

we use strings

🙂

that was my first instinct when modelling, but then noticed that uri type and hey! looks cool 🙂

so i was baited into it 😆

strings then. But still i do consider it to be actually a real PITA that docs do not mention that one can not insert URI datatype using rest. OR if one can, how to do it. 😞

a short-coming, to be sure

Is there a simple way to get datomic to return me all the attributes under a certain ns? user/### or do I have to get all the attribute idents and do some pattern matching on them 🙂

Is a where clause like [?e :entity/status _] equivalent to not adding it at all?

I just tried and the attribute must exist.

It should match on any entity has that attribute but any value @yonatanel

@mbutler Thanks. I wanted to parameterize the query with the desired status or not checking status at all, but without concat.

Sorry, not sure I 100% follow, is your problem solved? Or are you saying you want it to match on either a status value you pass in or ignore it? Code example might help 🙂

@mbutler Well, I use concat to build the query according to some parameter. I either include a clause for the status or not include it at all (matching either on a value or ignoring it). I wanted to avoid concat but not sure it's possible or if there's any benefit to it like the query will somehow be optimized.

when you dont include it do you want it to match on any value of :entity/status or match even if there isn’t an :entity/status attribute on that entity

I want to match even if the attribute is missing

Maybe [(get-else $ ?e :entity/status :none) _]

That should work

An or should work as well

Actually the whole thing is pointless since I need to alter the query according to some variable. Never mind.

No problem 🙂

Good luck 🙂

For anyone curious here is the query I ended up with to find all attributes of a certain ns

(d/q '[:find ?ident
         :in $ ?input-ns
         :where
         [?e :db/cardinality _]
         [?e :db/ident ?ident]
         [(namespace ?ident) ?ns]
         [(= ?ns ?input-ns)]] database input-ns)