Designing Processes › Process Loops and Iterations › Loop a Series of Operators › The Logical Sequence of a Loop Operator

The Logical Sequence of a Loop Operator

A Pre-execution code and Post-execution code field are available in the Loop operator properties. You can enter JavaScript code in these fields to run with each iteration of the loop. CA Process Automation runs any pre and post execution code for a Loop operator for each iteration of the loop.

Note: In content developed before an upgrade to CA Process Automation 4.0, loop operators will have empty Pre-execution code and Post-execution code fields.

The processing sequence of any Pre and Post conditions depends on the type of loop.

While Loop Operators:

1. Run Pre condition.
2. Check while loop condition as indicated by the Repeat Count field.
   • If the loop condition succeeds:
     1. Reset the operators inside the Loop operator.
     2. Execute the operators inside the Loop operator.
     3. Execute the Post Condition at the end of the Loop iteration.
     4. Loop back to step 1.
   • If the loop condition fails:

     Get out of the Loop operator without executing the Post condition then execute the next operator after the loop operator.

Do While Loop Operators:

1. Reset the operators inside the Loop operator.
2. Execute Pre condition.
3. Execute the operators inside the Loop operator.
4. Execute Post condition.
5. Check do while loop condition as indicated by the Repeat Count field.
   • If the loop condition succeeds, loop back to step 1.
   • If the loop condition fails, get out of the Loop operator then execute the next operator after the Loop operator.