CDI BusinessProcessEvent @Observer, detecting ProcessInstance start

[mason]

Hello all.  I am using the Activiti-CDI module, a CDI observer, @Observes BusinessProcessEvent businessProcessEvent.  All of that is working perfectly.  I would like to be able to run some code when a ProcessInstance is started or before it's destroyed.  I've been trying to figure out a way to see what node type the BusinessProcessEvent is at, for example a Start Event or an End Event, but have been unable to do so.  Any pointers on how I can do that?

Thanks,
Mason

[mason]

I tried to inject the Task, as per the manual, using @Inject Task task, to see if I could get the current node from that,  Now I get the error
<code>
Servlet.service() for servlet Faces Servlet threw exception: org.activiti.cdi.ActivitiCdiException: Cannot work with tasks in an activiti command.
at org.activiti.cdi.impl.context.DefaultContextAssociationManager.getTask(DefaultContextAssociationManager.java:235) [activiti-cdi-5.13.jar:]
at org.activiti.cdi.BusinessProcess.getTask(BusinessProcess.java:467) [activiti-cdi-5.13.jar:]
at org.activiti.cdi.CurrentProcessInstance.getTask(CurrentProcessInstance.java:99) [activiti-cdi-5.13.jar:]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.6.0_32]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) [rt.jar:1.6.0_32]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) [rt.jar:1.6.0_32]
</code>

[mason]

I found a way to do it, but it's a bit messy.  Please let me know if there is a cleaner way to do this.  Thanks!

<code>
public void onProcessEvent(@Observes BusinessProcessEvent businessProcessEvent, ProcessInstance pi) {
  ExecutionEntity ee = (ExecutionEntity) pi;
   if (null != ee) {
     ActivityImpl ai = ee.getActivity();
   if ("start".equals(businessProcessEvent.getType().getTypeName()) && ai.getActivityBehavior().getClass().equals(NoneStartEventActivityBehavior.class))
    createProcessInstance(businessProcessEvent, pi);
   if ("end".equals(businessProcessEvent.getType().getTypeName()) && ai.getActivityBehavior().getClass().equals(NoneEndEventActivityBehavior.class))
    endProcessInstance(businessProcessEvent, pi);
   }
}
</code>

[paulo1]

Does it work for tomcat7?