Exercise 8 - Adding constraints on contracts

Goal

The goal of this exercise is to continue the leave request process implementation by specifying constraints to the contract for the case instantiation

⚠ It is mandatory to strictly observe the case and syntax of the technical names provided in the instructions. Failing to do so will result in errors.

Instructions overview

Duplicate the process diagram from the previous exercise to create a 4.0.0 version

Add these two constraints on the case instantiation contract:

• leaveStart must be in the future
• dayCount must be strictly greater than zero

Step by step instructions

1. Duplicate the process diagram from the previous exercise to create a 4.0.0 version:

2. Set up the case instantiation contract constraints:

   • Select the process pool
   • Navigate to the Execution / Contract / Constraints tab
   • Add the following constraint:

   Property	Value
   Name	leaveStartIsFuture
   Expression	requestInput.leaveStart.isAfter(java.time.LocalDate.now())
   Error message	Leave start must be in the future

   • Add a second constraint:

   Property	Value
   Name	atLeastOneDay
   Expression	requestInput.dayCount > 0
   Error message	Day count must be greater than zero

   

Note: Two constraints have been automatically created when the contrat is initialized, because the attributes selected in the contract are mandatory

1. Save the process:

   • Click on the Save button from the Studio's top menu bar

2. Run the process to test your contract constraints:

   • Run the process and use the automatically generated forms to test your constraints

Next exercise: add an actor filter