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From Gianny Damour <>
Subject Re: Question about deployer classloaders/plan hierarchy.
Date Fri, 12 Nov 2004 02:16:42 GMT
On 12/11/2004 8:38 AM, David Jencks wrote:

> <snip>
> However, I think the original goal was to have the builder modules not 
> actually directly use classes from the runtime modules, but allow such 
> classes to be loaded from the configuration's classloader only.  At 
> the moment we cannot achieve this goal because there are several 
> classes that are used both in deployment and runtime.  In particular, 
> there is a POJO model in security and a few classes in connector.  I 
> believe that if we decided to approach the goal of completely 
> independent classloader hierarchies we would need another set of 
> modules for shared classes, or we would have to eliminate these shared 
> classes.

I assume so. However, even if a new set of modules are created for those 
shared classes, it will still be possible to "deploy" successfully a 
module and not be able to "run" it if the configuration associated to 
j2ee-server-plan is not one of the ancestor of the module being deployed.

I do not know if this is possible; yet, it seems that if we were able to 
update dynamically the parent configuration corresponding to 
j2ee-server-deployer-plan and set it to the parent configuration of the 
module being deployed, then we will not have this problem: if you can 
"deploy", then you are sure that you can "run" the module.

In such a case, one does not need to have this new set of modules for 
the classes shared by the various builders and their associated runtime 


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