Ok found where the problem was...
In order to get unboxed ints I used (vector-of :int ...) which returns a
clojure.core.Vec object. That object is not serializable (I looked at
the source) and therefore I am getting this exception...Is there a
reason why these objects are not serializable?
Jim
On 20/08/13 20:17, Jim - FooBar(); wrote:
Hi all,
I've a rather strange problem...I know that all clojure collections
implement Serializable but when I try to use standard Java
serialization on a vector of records I get this exception:
/NotSerializableException clojure.core.Vec
java.io.ObjectOutputStream.writeObject0 (ObjectOutputStream.java:1180)/
observe this:
Clondie24.games.chess=> (ut/serialize! @current-chessItems "DELETE")
*
**NotSerializableException clojure.core.Vec
java.io.ObjectOutputStream.writeObject0 (ObjectOutputStream.java:1180)*
Clondie24.games.chess=> (class @current-chessItems)
clojure.lang.PersistentVector
Clondie24.games.chess=> (ut/serialize! [:A :B :C :D] "DELETE") *;;SUCCESS*
nil
Clondie24.games.chess=> (first @current-chessItems)
#Clondie24.games.chess.ChessPiece{:image
#<chess$starting_chessItems$fn__12387$fn__12388
Clondie24.games.chess$starting_chessItems$fn__12387$fn__12388@2a6446c9>,
:position [0 0], :rank rook, :value 5, :direction 1}
Clondie24.games.chess=> (ut/serialize! *1 "DELETE2")
NotSerializableException clojure.core.Vec
java.io.ObjectOutputStream.writeObject0 (ObjectOutputStream.java:1180)
Clondie24.games.chess=> (ut/serialize! (dissoc *1 :image) "DELETE3")
;;MAYBE THE FUNCTION IS TO BLAME
NotSerializableException clojure.core.Vec
java.io.ObjectOutputStream.writeObject0 (ObjectOutputStream.java:1180)
Clondie24.games.chess=> *1
#Clondie24.games.chess.ChessPiece{:image
#<chess$starting_chessItems$fn__12387$fn__12388
Clondie24.games.chess$starting_chessItems$fn__12387$fn__12388@2a6446c9>,
:position [0 0], :rank rook, :value 5, :direction 1}
Clondie24.games.chess=> (ut/serialize! (dissoc *1 :position)
"DELETE3") *;;SUCCESS*
nil
Clondie24.games.chess=> (class (get *2 :position))
clojure.core.Vec
it seems to me that the [:position [0 0]] slot in the record is
causing the problems because it is a Vec and not a Vector...but then
this is my defrecord definition:
(defrecord ChessPiece [ image ;;not really an image but a fn that
fetches the image
^clojure.lang.PersistentVector position
rank ^long value direction]
core/Piece
...
... )
any ideas? should I not have type hinted the record?
thanks in advance for your time :)
Jim
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