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From "Remy Maucherat" <r...@apache.org>
Subject Re: cvs commit: jakarta-tomcat-4.0/jasper/src/bin jasper.bat jasper.sh
Date Mon, 01 Apr 2002 19:09:54 GMT
> > Fine, but your change creates problems (Jasper does not work on JDK 1.4
> > unless you delete common/endorsed/xerces.jar). I don't know why at this
> > time, but it should be fixed ASAP.
> >
> > (Note: I don't care too much about this functionality ... Adding another
CL
> > layer is dangerous and makes CL slower; unless other people think this
is
> > useful I don't think we should add the feature)
> >
> > Remy
> >
> >
> I think I found the problem. In JDK 1.4, the StandardClassLoader's
>
> loadClass() method appears to be unconditionally delegating to its
>
> parent classloader even when setDelegate is set to false. This
> appears to be caused by changes to the URLClassLoader class in JDK
> 1.4.

I had missed that it was attempting to change the delegation model
(apparently, Costin didn't, that's why he was complaining, I suppose ;-)).
I'm -1 for the patch then; please revert it. The use case is clearly not
worth introducing non-compliant behavior; I fully agree with Costin here: if
the ext mechanism is broken, then it's up to the JDK to fix it.

Remy


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