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taoensso / nippy

The fastest serialization library for Clojure
https://www.taoensso.com/nippy
Eclipse Public License 1.0
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Problem using writeUTF #71

Closed crossapple closed 8 years ago

crossapple commented 9 years ago

Hi I have been using nippy to output a complete datastructure which is a very large map based on ctries. Sadly the .writeUTF that you use in the example for handling customer types is failing as there is a maximum number of characters allowed by writeUTF. Do you have any suggestions as to how I might overcome this issue. I am a fairly new clojure user.

ptaoussanis commented 9 years ago

Hi there,

Here's that example rewritten to allow (much) larger strings:

(defrecord MyType [data])

(nippy/extend-freeze MyType :my-type/foo ; A unique (namespaced) type identifier
  [x data-output]
  (nippy/write-utf8 data-output (:data x)))

(nippy/extend-thaw :my-type/foo ; Same type id
  [data-input]
  (->MyType (String. (nippy/read-utf8 data-input))))

(nippy/thaw (nippy/freeze (->MyType "Joe")))

Is there a reason you're using a custom freeze though if your data is just a large map? I'd generally recommend avoiding extend-freeze/extend-thaw if you can.