Mailing-List: contact tomcat-dev-help@jakarta.apache.org; run by ezmlm
From: "Ken X Horn" <horn_ken@jpmorgan.com>
To: tomcat-dev@jakarta.apache.org
Message-ID: <852568F1.004C4FB1.00@nyc-ntgw-n01.ny.jpmorgan.com>
Date: Thu, 1 Jun 2000 14:52:54 +0100
Subject: WebApps / ClassLoaders / AdaptiveClassLoader
Mime-Version: 1.0
Content-type: text/plain; charset=us-ascii
Content-Disposition: inline

Hi,

Our application needs to load a bunch of classes at runtime (based on a config
in a db). I wanted to use an instance of AdaptiveClassLoader (ACL), but couldn't
because the classes to be loaded, need to reference the classes loaded by the
web app class loader, but the ACL does not support the parent method of
ClassLoader. I tried subclassing ACL but this makes the code messy, and overly
complicated. In the end I cloned it as a workaround. The code change is minimal
(extra constructor and a change to loadClass).

Is there a reason ACL doesn't support parent class loaders?

Anybody want the patch?

Also, the ACL throws an exception if one of the File's passed doesn't exist --
was thinking of making it just remove it from the repository, in order to
emulate the system CLASSPATH behaviour more. Opinions?

Ken.


This communication is for informational purposes only.  It is not intended as
an offer or solicitation for the purchase or sale of any financial instrument
or as an official confirmation of any transaction. All market prices, data
and other information are not warranted as to completeness or accuracy and
are subject to change without notice. Any comments or statements made herein
do not necessarily reflect those of J.P. Morgan & Co. Incorporated, its
subsidiaries and affiliates.