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From "Bill Barker" <wbar...@wilshire.com>
Subject Re: TC 3.3.2-dev and endorsed lib
Date Mon, 13 Oct 2003 09:38:37 GMT

----- Original Message ----- 
From: "Henri Gomez" <hgomez@apache.org>
To: "Tomcat Developers List" <tomcat-dev@jakarta.apache.org>
Sent: Monday, October 13, 2003 2:09 AM
Subject: Re: TC 3.3.2-dev and endorsed lib


> Bill Barker a écrit :
>
> > ----- Original Message ----- 
> > From: "Henri Gomez" <hgomez@apache.org>
> > To: "Tomcat Developers List" <tomcat-dev@jakarta.apache.org>
> > Sent: Monday, October 13, 2003 1:28 AM
> > Subject: TC 3.3.2-dev and endorsed lib
> >
> >
> >
> >>In TC 4.1.x and 5.0.x there is support for endorsed lib but
> >>nothing like this in tc 3.3.2-dev.
> >>
> >>Since we may have people (including myself), who will have
> >>to use SDK 1.4.x with Tomcat 3.3.2, I like to add such feature
> >>to Tomcat 3.3.2-dev.
> >>
> >
> >
> > It's not really necessary for 3.3.x, since the XML parsing requirements
for
> > Tomcat are pretty limited (without looking, we are currently shipping
with a
> > jaxp1.x version I believe).
> >
> >
> >>I was thinking put the endorsed in lib/endorsed, ie next
> >>to lib/common, lib/apps and lib/container.
> >>
> >
> >
> > I'm +0 as long as the lib/endorsed directory is empty in the default
> > install.  Otherwise, I'm -1.
> >
> >
> >
> >>I'll modify run scripts and build for such feature.
> >>
> >>If a classloader specialist could see if something is
> >>required (from TC 4.1 it seems yes).
> >
> >
> > The Tomcat 3.3 ClassLoaders are all delegating loaders (so it is much
> > simpler than the 4.x/5.x case).  If you are using a 1.4.x JVM, Tomcat
3.3
> > will always grap the XML parser from the System ClassLoader (either the
one
> > that ships-with, or the endorsed).
>
> Even if we set -Djava.endorsed and fill the directory with the jars we
> want it to use ?
>

That should work much like it does for 4.1.x/5.0.x (but I haven't tried it
:).  Once you get out of the WebappClassLoader, the 4.1.x/5.0.x ClassLoaders
are delegating CLs.  Again, I'm +0 to set the -Djava.endorsed.dir to an
empty directory (that the user can copy their favorite xerces version to),
and -1 to populate it by default.

>
>
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