Milestone workflow pattern using AMX BPM

WHAT?

 The Milestone workflow pattern is a BPM Process behaviour in which an activity is only enebled when the process instance is reached in specific state (milestone), in case process instance progresses beyond this state, then the task is no more enabled.

 An interesting graphical animation, simulating the behaviour of such use case can be found here.

WHY?

 There are lot of real life industry use cases which needs to have this pattern implemented in TIBCO AMX BPM, which is preferred BPM Product by many clients today. We can consider an example BPM Process use case in Aviation Industry which has to do with Flight Management. 

 In this use case there is requirement that check-in's are allowed only during specific time, i.e. once a process instance reached certain milestone, check-in's should be allowed and prior to 45 minutes of closing of gates

HOW?

 AMX BPM Provides lot of implementation alternatives to implement this use case using TIBCO Business Studio. However to make this use case and its implementation understandable, I will try keep the suggested solution as simple as possible.

 In the simplest approach as shown below in the Diagram:

1. A signal can be thrown to start check-ins.
2. As soon this signal is caught before allowing check-ins a Time comparison should be done if check-ins should be allowed are not. Based on the results process instances continues execution. 

Note: In case if you are intrested in actual sample implementation or you have a problem implementing or even you feel there is better approach for the beginners then it would be helpful if you can drop a message. 

We strongly believe that collaboration makes internet better place.