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From: Martin Gainty <mgainty@hotmail.com>
To: Tomcat Users List <users@tomcat.apache.org>
Subject: RE: Loading Jar files in a particular order on Tomcat 6
Date: Sun, 4 Oct 2009 08:57:30 -0400
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Larsen

Keeping more than one version of the same package and class will cause exce=
ssive Administrative work
Maven Build Environments will allow you to deploy a specific package/class =
and version to a profile
maven allows you to compile/install and deploy the same package/class with =
a different version for Development=2C QA and Production profiles

http://maven.apache.org
Martin Gainty=20
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> Date: Sun=2C 4 Oct 2009 13:02:39 +0200
> Subject: Re: Loading Jar files in a particular order on Tomcat 6
> From: kolibriasdf@gmail.com
> To: users@tomcat.apache.org
>=20
> 2009/10/4 Leon Rosenberg <rosenberg.leon@googlemail.com>:
> > On Sun=2C Oct 4=2C 2009 at 1:00 AM=2C Eric B. <ebenze@hotmail.com> wrot=
e:
> >> "Caldarale=2C Charles R" <Chuck.Caldarale@unisys.com> wrote in message
> > Back to the original post=2C
> > why don't you simply patch (maybe automatically with ant) the jar file
> > containing the 'old' version of the class and remove it?
>=20
> The jar files are provided and signed by an external vendor.
>=20
> > You won't be able to keep two different versions of a class in the
> > same classloader anyway.
>=20
> I want to use the newest version only=2C of course. Normally=2C I would
> simply place the jar with the newest versions first in the classpath.
> But the tomcat server has no such control=2C instead it just loads jar
> files from the WEB-INF/lib directory=2C which means that the order is
> based on the OS filesystem.
>=20
> Apparently=2C there is no easy way to control the classpath for web
> applications in Tomcat=2C so instead I have to make a custom classloader
> that does loads classes from the jar files in a controlled order.
>=20
>  - Rasmus
>=20
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