[rules-users] Iterating string objects inside Arraylist

[Ganesh R.]

I am a novice in Drools, sorry if this question is trivial and has already been discussed. I couldn't find the direct method for implementing the below behavior.

I have a class like this.

public class Account {
        public int balance;
        public String id;
        public List<String> types;
// getter setters
}

I am trying to check the following:
Accounts having balance greater than $100 and types containing both Savings and Checking.

// Creating sample Facts in Java main
        Account account = new Account();
        account.setBalance(100);
        account.setId("A1");
        List<String> temp = new ArrayList<String>();
        temp.add("Savings");
        temp.add("Checking");
        account.setTypes(temp);

// Creating rules

rule "Sample"

    when
                bat : Account(balance == 100)
    then
       if (bat.getTypes().contains("Savings") && bat.getTypes().contains("Checking")){
        System.out.println("I got this");
       }
end

Is there more proficient ways to do this?? like checking the contents of the arraylist (types as per the above example) in rule i.e. in "when" instead of doing it in "then" ??

Much appreciate your answers.
Thank you!


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