Re: What could cause spec_directories_from_classpath / org.jruby.rack.RackInitializationException ?

> On Sat, Jun 20, 2009 at 11:53 PM, Chris Collins<xoptop@...> wrote:
>> Hi All,
>>
>> Could anyone throw out a wild unsubstantiated guess as to what might cause
>> this exception when I try to start an AppEngine/Rails app.
>>
>> It seems to be related to my spec directories/classpath but I have no idea
>> what kinds of issues would trigger this or where to look for more info.
>
> Wow that's an interesting one. It looks like some logic for walking
> paths in CLASSPATH expects that the object returned will always be a
> Java Enumerable, which has a hasMoreElements method. In this case, it
> seems like the result is *not* an Enumerable.
>
> You'd probably be able to look into that file
> (lib/ruby/site_ruby/1.8/rubygems/defaults/jruby.rb:86) and see how
> it's doing the CLASSPATH walking. My guess is that on whatever JVM/JDK
> version you have, what it's walking isn't guaranteed to be an
> Enumerable, and we'll have to clean up the code a bit for that
> potential.
>
> - Charlie
>