I started using one-jar to package my clojure code as a single
executable jar and ran into a problem right away with loading of
classes. I have a very simple project at g...@github.com:fgx3prak/
bug.git that crashes in the same manner as my real code base and think
that the underlying problem is the same.
The source looks like this:
(use 'clojure.http.client)
(ns bug
(:use clojure.http.client))
In short, mvn compile works fine the first time but fails after that.
If I have only one of "use" or "ns", there is no error. I believe that
the combination of "use" and "ns" represents the condition under which
the bug manifests itself in the real code.
I haven't been able to figure out the cause of this problem. I have
already looked at verbose:class output and AFAIK clojure.http.client
class is getting loaded completely. Is there any way to get a trace of
clojure class loading?
Any help/hints greatly appreciated! Thanks!
Exception in thread "main" java.lang.ExceptionInInitializerError
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:247)
at clojure.lang.RT.loadClassForName(RT.java:1578)
at clojure.lang.RT.load(RT.java:399)
at clojure.lang.RT.load(RT.java:381)
at clojure.core$load$fn__4506.invoke(core.clj:4893)
at clojure.core$load.doInvoke(core.clj:4892)
at clojure.lang.RestFn.invoke(RestFn.java:409)
at clojure.core$load_one.invoke(core.clj:4717)
at clojure.core$compile$fn__4511.invoke(core.clj:4904)
at clojure.core$compile.invoke(core.clj:4903)
at clojure.lang.Var.invoke(Var.java:365)
at clojure.lang.Compile.main(Compile.java:56)
Caused by: java.lang.NullPointerException
at clojure.core$refer.doInvoke(core.clj:3276)
at clojure.lang.RestFn.invoke(RestFn.java:411)
at clojure.lang.AFn.applyToHelper(AFn.java:163)
at clojure.lang.RestFn.applyTo(RestFn.java:133)
at clojure.core$apply.invoke(core.clj:542)
at clojure.core$load_lib.doInvoke(core.clj:4769)
at clojure.lang.RestFn.applyTo(RestFn.java:143)
at clojure.core$apply.invoke(core.clj:542)
at clojure.core$load_libs.doInvoke(core.clj:4788)
at clojure.lang.RestFn.applyTo(RestFn.java:138)
at clojure.core$apply.invoke(core.clj:544)
at clojure.core$use.doInvoke(core.clj:4868)
at clojure.lang.RestFn.invoke(RestFn.java:409)
at bug__init.load(Unknown Source)
at bug__init.<clinit>(Unknown Source)
... 13 more
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