Advanced DRL rules in VS Code and Business Central
When we first introduced business rules in Chapter 1, we used a slightly formal when …. then format – when something is true, then do this action. The rule in our Red Piranha example in Figure 12.11 follows this format exactly:
- When a Cell object is marked as unmodified
- Then update the status flag to modified/print a message to the console
So, the basic format is simple and very human-readable. There is a lot of power available when writing individual rules this way, and DRL files can be mixed and matched with the decision models that we’ve been using for most of this book.
Each line in a decision table is equivalent to one DRL rule
We described decision tables as having columns equivalent to when (conditions) and columns that activate when matched (then, on the right-hand side of a decision table). So, you can think of each line of a decision table as being equivalent to one rule in a...
