On Dec 2, 12:12 pm, Chouser <[EMAIL PROTECTED]> wrote:
> On Tue, Dec 2, 2008 at 10:24 AM, Rich Hickey <[EMAIL PROTECTED]> wrote:
>
> > Proxy generation was the last runtime code-gen/classloader
> > requirement. So the path is clear for building Clojure apps without
> > runtime codegen, for delivery in those environments that preclude it
> > (e.g. Android, unsigned applets). Looking forward to feedback from
> > people trying to reach those targets.
>
> You asked for it. :-)
>
> Here's a minimal applet .clj:
>
> (ns net.n01se.Tree
> (:gen-class
> :extends java.applet.Applet))
>
> Since it's missing a main fn, I would expect an exception like the this:
> java.lang.UnsupportedOperationException: net.n01se.Tree/-main not
> defined (NO_SOURCE_FILE:0)
When and why?
The mappings are dynamic, you'll get an error if you try to call it,
and you could define that later somehow.
>
> Using svn 1136 I can compile and get the above exception from a normal
> Clojure REPL, but if I try to use it as an applet:
>
> $ appletviewer test.html
> java.lang.ExceptionInInitializerError
> at clojure.lang.Namespace.<init>(Namespace.java:31)
> at clojure.lang.Namespace.findOrCreate(Namespace.java:116)
> at clojure.lang.Var.internPrivate(Var.java:95)
> at net.n01se.Tree.<clinit>(Unknown Source)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
> Method)
> at
> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
> at
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
> at java.lang.reflect.Constructor.newInstance(Constructor.java:532)
> at java.lang.Class.newInstance0(Class.java:372)
> at java.lang.Class.newInstance(Class.java:325)
> at sun.applet.AppletPanel.createApplet(AppletPanel.java:798)
> at sun.applet.AppletPanel.runLoader(AppletPanel.java:727)
> at sun.applet.AppletPanel.run(AppletPanel.java:380)
> at java.lang.Thread.run(Thread.java:636)
> Caused by: java.security.AccessControlException: access denied
> (java.lang.RuntimePermission createClassLoader)
> You can see it found my class okay, but it looks like there may be
> some dynamic classloader stuff still going on?
>
Thanks, that's useful.
Yes, the dynamic loader is still there, just won't be used, but it
looks like the security check is on creation. Getting it completely
out is another project...
Rich
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