Send process variables as local variable to event sub process

[Giovanni Roos]

Hi

 

I have a process (process-P) that contains an event sub process. The event (event-A) that starts this event sub process is 'invoked' from a variety of other process instances (with other process definitions). I am using a REST call (/message) to invoke event-A. The method signature in my rest client:

 

public boolean sendMessage(String messageName, String businessKey, Map<String, String> processVariables, Map<String, String> correlationKeys);

 

My problem is that the process instances that fire event-A override each other’s process variables that they send to process-P when starting the event sub process. Is it possible to send the process variables as LOCAL scoped variables to the event sub process with the /message REST call to the event sub process?

 

Thank you

Giovanni

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[thorben....@camunda.com]

Hi Giovanni,

According to the BPMN specification, an event subprocess does not define a new scope (i.e. it shares the scope it is defined in, which is the process instance in your case), that's why this cannot be done. Why did you choose to go with an event subprocess and not move the event subprocess to an independent process definition such that messages always create a new process instance (and therefore scope?).
If I understand your scenario correctly, then you always have at most one instance of process-P with your current design. I would like to understand your reasoning behind this.

Cheers,
Thorben

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[giovan...@gmail.com]

Hi Thorben
Thank you for the quick response. The main reason was to have only a single process with lower overhead in terms of maintenance but I did not realize the side effect of this decision. What you say make sense and I will implement as you suggested.

Thanks!
Giovanni