Model 11 - Events attached to Sub-Processes

Goals of this lesson

• Catching events from sub-processes

How-to

In this model we will catch Cancel Events that are fired in the subprocess model of a subprocess activity. Have a look at Model 11 and Model 11a (the subprocess model).

Therefore we will define a stochastic variable which then will be used for the decision making at the branching exclusive gateway in Model 11. Depending on this variable the subprocess will either finish normally. Or it will throw one of the cancel events, which will fire the respective cancel event attached to the subprocess activity. Each of the two attached cancel events will lead to a respective activity that will be executed to treat the canceling of the subprocess.

Approach

• Define a stochastic variable called x in Model 11a (the subprocess model, see Figure 2 below)
• Pick the Discrete Uniform Distribution with
• A minimum value of 2
• A maximum value of 5
• Also create these conditions at the branching exclusive gateway in Model 11a
• Upper edge: x > 3
• Lower edge: x < 3
• Middle edge: default

Explanation

This means that the subprocess model will only finish with the general end event, if x equals 2. otherwise it will trigger one of the receiving cancel events that are attached to the subprocess activity.