[jboss-jira] [JBoss JIRA] Commented: (JBRULES-2390) AbstractProcessInstanceMarshaller does not hanlde ActionNode instances

Wed May 19 10:36:07 EDT 2010

    [ https://jira.jboss.org/browse/JBRULES-2390?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12531498#action_12531498 ] 

Kris Verlaenen commented on JBRULES-2390:
-----------------------------------------

You should only be saving your process instance at "safe states".  This means that the engine has finished processing the instance so it can be persisted consistently.  ActionNodeInstances are always executed immediately, so should never exist at these safe points.  That's why they are not supported in the marshaller.

You could have this issue if for some reason you are trying to save changes either in the middle of your execution or while another thread is still executing this process instance.  Using a command service consistently should prevent this.

> AbstractProcessInstanceMarshaller does not hanlde ActionNode instances
> ----------------------------------------------------------------------
>
>                 Key: JBRULES-2390
>                 URL: https://jira.jboss.org/browse/JBRULES-2390
>             Project: Drools
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: drools-core (flow)
>    Affects Versions: 5.1.0.M1
>            Reporter: John Barnett
>            Assignee: Kris Verlaenen
>             Fix For: 5.1.0.M2
>
>
> When serializing a rule flow process containing Action nodes the AbstractProcessInstanceMarshaller throws an IllegalArgumentException with the message: "Unknown node instance type: ". 
> Is there a reason why the writeNodeInstanceContent() method does not explicitly handle node instances of type ActionNodeInstance?

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