I am trying to construct java object and assign it's fields from a map.
That is given Java object of class Something { long id; String name; }
and Clojure map {:id 12, :name "Impostor"}
I would like to set fields of java object to respective values from map.
Now, this works
(let [o (Something.)]
(set! (. o :id) 12)
(set! (. o :name) "Impostor")
o)
But as soon as I use some value to get field expression compiler
starts complaining "Invalid assignment target".
that is
(let [o (Something.)
ff :id]
(set! (. o ff) 12)
o)
I do not understand why this problem occurs. Any variations that I
tried to made it work do not do the trick.
Including weird (or ridiculous) ones like (set! (. o (symbol (str ":"
(name ff))) 12)
I suspect that this has something to do with compiler that needs field
names at compile time but Clojure could use reflection for this...
Can anyone point to what is wrong here?
By the way is there already some function that allows to set fields of
an object from a map?
--
Petr Gladkikh
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