How a Callactiviti can access the parent process variables?

[purna_cherukuri]

Hi,

I am trying to use CallActiviti in my BPMN2.0 process.  But I found it mandatory to pass the input variables to call Activiti as it runs in a child execution. 
Is there a way to pass whole set of parent execution's variables to Callactiviti without mentioning each and every one in bpmn2.0 xml?  Or is there a way to tell Callactiviti to share the variables from it's parent execution without mentioning all the variable names in my process definition?  

We have a large set of variables to pass through, and I am finding it as a maintanence issue if we hard code the variable names in process definition.  Please suggest me on this.

[midiman]

Hi,
Apologies for the delayed response..been on many projects..

Your solution sounds good, but it has the 'chicken and egg' problem. It's easy to create a JavaDelegate to get/set variables, but any instance of that delegate will be in *either* the parent model or the Call Activity model - there is no bridge between the two (that I can see anyway).
The Java delegate can only read the variables it's given.
If you can provide more detail on your solution, that would be great!

Many thanks,
Peter

[midiman]

t

[javadude]

I needed to be able to get the value of expressions in a delegate used by a sub-process and have any parent process variables mentioned within the expressions replaced with the variable values. (And without specifying every parent process variable as an in parameter.) I found I could do it using the super execution:

protected Expression colourText; // Where colourText = "My ${colour} test string";

public void execute(DelegateExecution currentExecution) {

  // Get parent process execution if there's a parent otherwise use the execution of the current process.

  // This allows the delegate to be used in the root process or a sub-process

  DelegateExecution execution = ((ExecutionEntity)currentExecution).getSuperExecution();
  if (execution == null) {
    execution = currentExecution;
  }

  String text = null;

  Object value = colourText.getValue(execution);

  if (value != null) {
    text = value.toString(); // This will be "My red test string" if the parent process has colour set to red.
  }

}

This worked with Activiti 5.21.0