Hi Yoshinori,
after (unsuccessfully) struggling with Clojure dynamic ClassLoaders in
clojure-1.4, I ended up with the 'brute force' solution--just add URL
entries to the Java system classloader. Here is a simple example on how to
do it from clojure:
(defn add-system-classpath
"Add an url path to the system class loader"
[url-string]
(let [field (aget (.getDeclaredFields java.net.URLClassLoader) 0)]
(.setAccessible field true)
(let [ucp (.get field (ClassLoader/getSystemClassLoader))]
(.addURL ucp (java.net.URL. url-string)))))
(add-system-classpath "file:/some/clojure/root/")
(load "some/clojure/file") ;; load the some/clojure/file.clj from the
/some/clojure/root/ catalog
(add-system-classpath "file:/some/java/classes/")
some.java.MyClass ;; use the some.java.MyClass in the /some/java/classes/
catalog
Regards,
Vladimir
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