[jboss-dev-forums] [Design of JBoss jBPM] - PD versioning and classloader scoping

[bill.burke@jboss.com]

This post goes along with the .bpm archives feature talked about here:

http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4051925#4051925

When deploying a .bpm archive, you will also be able to include action, handler, and other utility classes within this archive.  You will also be able to classloader scope these classes so that when the process instance is being executed on, it will run inside the configured classloader.  

How I/we will do this is still a mystery to me at the moment.  At the Command Service layer, this is pretty straight forward.  Just have some association someplace with the process definition and a classloader and push/pop the classloader when a message comes in.  Referencing the process definitions, instances, tasks, tokens, etc... from standard JBPM APIs and being able to run with the correct classloader is a different problem and will need to be thought out more.


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