refsets for composite keys

[weavejester]

refsets for composite keys

[weavejester]

Sorry, I don't understand. In what way are refsets for composite keys not already supported?

[RickMoynihan]

Well I tried and it didn't seem to work, and I don't see it documented anywhere. Though I realise now that my issue is pretty ambiguous. Essentially I'd like an ig/refset to return all instances of the key they compose; without having to derive sub-keys.

e.g. semantically something like:

{[:app/component :instance/one] {}
  [:app/component :instance/two] {}

  :app/components {:components #ig/refset :app/component}
}

[weavejester]

It should work. I just tested it right now:

user=> (require '[integrant.core :as ig])
nil

user=> (defmethod ig/init-key :app/component [_ v] v)
#object[clojure.lang.MultiFn 0x3792163 "clojure.lang.MultiFn@3792163"]

user=> (defmethod ig/init-key :app/components [_ v] v)
#object[clojure.lang.MultiFn 0x3792163 "clojure.lang.MultiFn@3792163"]

user=> (ig/init {[:app/component :instance/one] {:inst 1}
                 [:app/component :instance/two] {:inst 2}
                 :app/components {:components (ig/refset :app/component)}})

{[:app/component :instance/one] {:inst 1}
 [:app/component :instance/two] {:inst 2}
 :app/components                {:components #{{:inst 1} {:inst 2}}}}

[RickMoynihan]

Ahh many thanks, I can confirm this does indeed work.

It looks like when I tried I'd mistyped and used a non-namespaced keyword as the instance key.