What is a good design to execute the methods based on boolean values in Database in Java?

Question

We have few rules, which are Implemented as methods in Java. But sometimes we need to bypass the rules. So for each rule, we have a boolean Indicator to indicate whether to execute or not. What can be a good design to map the methods to boolean values in Database and execute methods based on the boolean values.

Below is sample template

1 Rule1 true
2 Rule2 false
3 Rule3 true
4 Rule4 true

So, now I need to execute method1(), method3() and method4() respectively.

One Simple way can be using If(rulee == true) executeMethod();

Second is using a Switch to execute the cases (method calls)

Note: We may need to execute the methods in different locations(methods). So please dont consider that all the methods will be called from a single method.

Can I make use of AOP by any chance?

Answer 1

You could define the basic interface as

public interface Rule {
  boolean canExecute();
  void execute();
}

and convert the methods into Rule interface implementations. The boolean value in the database would map to canExecute() return value.

This would be a good idea if methods are becoming complex, there's more than a few of them and the parent class is starting to look like a God Object.