Re: dynamic-environment class path issues

OK, here's an update.

I looked more closely (was blind earlier), and there's more detail in the
NoClassDefFoundError. It says "(wrong name:
com/company/department/something/Entity)"
- this means that it is actually finding the class, but it thinks it is in a
different package than the one it finds it in...

Any one else ever face something like this?

On 5/2/07, Amit Rathore <[email protected]> wrote:
>
> Hi
>
> I will look into sixx, I did look at Kawa, but it seemed weird to me as
> well.
>
> Meanwhile, the issue I'm having is that the external classpath is not
> getting reflected inside of the SISC classloader(?). I'm running using
> Eclipse, and everything works in general - except for code that does
> something with SISC. Setting an external CLASSPATH works fine for everything
> in general, except when SISC comes into play.
>
> At least, I think this is what is going on... I'm not sure. The trouble,
> for instance is, that SISC is able to find the java class which has the
> method I'm calling using S2J - but from within that class, the method calls
> Class.forName, and THAT is failing.
>
> Something SISC is doing is causing the class-loader to lose it's
> class-path...
>
> On 5/2/07, Kjetil S. Matheussen <[email protected]> wrote:
> >
> >
> >
> > On Wed, 2 May 2007, Amit Rathore wrote:
> >
> > > Hi folks,
> > >
> > > This is my first post to this mailing group. I recently started using
> > SISC
> > > in my project because between SISC, ABCL, Jatha, and JScheme - I felt
> > that
> > > SISC was the most usable and active. However, I've run into an issue
> > almost
> > > immediately - and I'd be very grateful for any help.
> > >
> >
> > Out of interest. Why did you give up on JScheme? (I recently jumped to
> > sisc as well, and wondered whether I should try jscheme or sisc. I
> > landed
> > on sisc since a short test showed that jscheme's macroexpand was just a
> > macroexpand-1, and that fault scared me off a bit. Perhaps I should have
> >
> > looked more at it.)
> >
> > Also, have you looked at kawa and sixx? I tried kawa a lot, and finally
> > gave up because its too weird. Sixx seems _very_ nice though, but it
> > doesn't provide very much.
> >
> >
> >
> > > Basically, what's happening is this. I'm using S2J to make a call into
> > a
> > > Java class method. The method takes a string which represents a
> > class-name
> > > (eg. com.company.department.something.Entity ) and uses Class.forNameto load
> > > it. This is throwing a ClassDefNotFound exception.
> > >
> > > I know the code works because I also have a different solution that
> > uses
> > > JRuby, and this same code works fine in that usage. I think the error
> > has to
> > > do with the fact that the SISC library is somehow changing the
> > classpath...
> > > I tried looking into this using the DynamicEnvironment class, and the
> > > classpath returned by the getClassPath method is an empty array.
> > >
> >
> > For me, just setting the CLASSPATH environment variable before starting
> > sisc works fine.
> >
> >
> > > Any insight would be greatly appreciated... I could continue down the
> > JRuby
> > > road, but that would be sub-optimal... :(
> > >
> >
> > I don't quite understand what you are trying to do. But I have written a
> > nice interface to the s2j module:
> > http://www.notam02.no/~kjetism/javaoo.tar.gz
> > <http://www.notam02.no/%7Ekjetism/javaoo.tar.gz>
> >
> > With it you can do things like this:
> >
> > (define entity (new <com.company.department.something.Entity>))
> > (-> entity methodname "class-name")
> >
> >
>
>
> --
> Regards,
> Amit Rathore
> --------------------------------------------
> http://epistemologic.com




-- 
Regards,
Amit Rathore
--------------------------------------------
http://epistemologic.com

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