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an exception that carries a map as a payload
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Data-Carrying Exception

An exception for carrying data. Based on clojure.contrib.condition.

Differs from c.c.condition in a few ways:

  • the exception is a descendant of RuntimeException rather than direct Throwable
  • the exception may be treated as a Clojure map itself (rather than its metadata)
  • catch clauses may be interspersed with handle causes.


(defn asplode [problem type]
  (dce.Exception/toss :message (str "Oh no! " problem") :type type))

(handler-case :type
  (when-not (success?)
    (asplode "failed!" :failure))
  (handle :failure e
    (log/warn e "stuff failed, dude: " (:message e)))
  (handle :catastrophic-failure e
    (System/exit (:exit-code e))))


Copyright (C) 2011 Kevin Downey, Stephen Gilardi, and Phil Hagelberg

Distributed under the Eclipse Public License, the same as Clojure.

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