[jboss-jira] [JBoss JIRA] Commented: (JBPM-165) process instance versioning

Thu May 31 08:17:08 EDT 2007

    [ http://jira.jboss.com/jira/browse/JBPM-165?page=comments#action_12363704 ] 

Bernd Ruecker commented on JBPM-165:
------------------------------------

Hi Tom. Maybe a misunderstanding: I don't create a new process instance, I really change the existing one to point to the new process definition. So I "just" change the references to ProcessDefinition, Nodes, ...

After that, the process instance is running in the new version, which works quite weill for most of the cases where we needed it. But maybe it is not so nice for the log...

> process instance versioning
> ---------------------------
>
>                 Key: JBPM-165
>                 URL: http://jira.jboss.com/jira/browse/JBPM-165
>             Project: JBoss jBPM
>          Issue Type: Feature Request
>          Components: Core Engine
>            Reporter: Tom Baeyens
>         Assigned To: Tom Baeyens
>             Fix For: jBPM jPDL 3.2.2
>
>
> i think jbpm could offer some degree of assistence in process instance versioning.  
> when a new version of a process is deployed, jbpm could do the following conversion for a process instance : 
> * input required: mapping of the nodes from the old to the new definition.
> * cancel the old process instance
> * create a new process instance and copy the runtime (exe) information such as tokens and process variables from the old process instance.  
> * then establish a special link between the 2 process instances to indicate that the new process instance is the continuation of the old process instance.
> this way we can avoid the problematic conversion of logs, while still keeping them in the system.

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