Hi,
 
I also managed to successfully get ruby scripting up and running with BSF and 
OSGi ... that was another riddle WRT class loaders... I'm using ruby 1.3.0, 
BTW...  Turns out, it's a similar trick to log4j... Ruby's JavaSupport.class is 
essentially hard set to use the context class loader... So. I basically play 
the "take away and put back" game... I swap out the context class loader for my 
own custom class loader -- which has a copy of the original context class 
loader anyway; When the script is complete, I simply put the original back -- 
in it's own thread, of course... This "trick" also didn't "break" groovy...  
I'm not doing any other scripting engines at the moment, but apparently each 
engine has it's own "quirkiness"...
 
Between ruby and groovy, I prefer groovy... the **feel** is a bit closer to 
java... Of course, I'm no guru...
 
For what it's worth, Craig Phillips, Praxis

________________________________

From: [EMAIL PROTECTED] on behalf of Craig Phillips
Sent: Fri 10/17/2008 8:34 AM
To: [email protected]
Subject: [equinox-dev] BSF, Groovy, class/OSGi resolution


Hi,
 
Update to a former post (of which I deleted) on the same subject -- I did 
manage to get bsf/groovy working in an OSGi container and do class 
resolution...  I was on the right track, thanks to and appreciate of support 
from J. Ervin as well as postings around the net -- to write and plug in a 
custom class loader...
 
My problem was that I did not implement all the methods and method signature 
variants... I blame that on Sun because: Classloader should be an interface, 
not something you extend;
 
When using BSF/groovy in an OSGi container, you want to write a custom class 
loader (be sure to implement findClass() as well as loadClass() -- bsf uses 
loadClass() while groovy uses findClass() -- go figure) that will search 
through the registered bundles in the OSGi container for a class, noting that 
Bundle has a method called loadClass() [what, no findClass() ??? LOL];
 
Anyway, you register your custom class loader to bsf and groovy a la:  
BsfManager.setClassLoader()...
 
BTW - be sure to consult the context class loader as well -- useful for core 
classes as well as when junit testing....
 
Lastly, I did not implement getResource() and variations thereof -- Bundle does 
not, IIRC, have anything equivalent [and, I think that makes sense]...
 
For what it's worth, Craig Phillips, Praxis
 

<<winmail.dat>>

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