How to use a dynamic attribute?

[SuperCuber]

I'm trying to query an AST created with clojure.tools.analyzer, where nodes look something like

{:op :if
 :children [:condition :then :else]
 :condition {...}
 :then {...}
 :else {...}}

I want to create a child rule, and I tried doing

'[[(child ?e1 ?e2)
   [?e1 :children ?tag]
   [?e1 ?tag ?e2]]]

However this doesn't seem to work - no results from the query. How can I achieve what I want?

[tonsky]

I don’t think there’s a way to do this with collection. If you import it into datascript database, you can certainly do it, kind of like you described. You’ll need to add :db.cardinality/many to schema to :children, otherwise it should work. But it directly on collection, it probably wouldn’t

[SuperCuber]

I see - I was missing the cardinality. I'll try this, thanks.