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Hello,

I'm trying to write a drools rule for the following situation:

I have a user profile object containing a list of Strings representing the roles this user has been granted.

I need a drools rule pattern that matches true if there is an intersection between the user's roles and a list of given roles.

In Java the rule logic would be:

     ArrayList<String> okRoles = new ArrayList<String>();

     okRoles.add("Internal");

     okRoles.add("Admin");

     Profile profile = // get profile from wherever...contains list of user's roles: {"User","Internal"}

     if( okRoles.retainAll( profile.getRoles() ) == false ) {

          // successful match

     }

How can I do similar match logic in Drools?  Here's where I'm at so far:

rule "Test1"

    when

        Profile(roles in ("Internal","Admin"))

    then

        System.out.println("Found role match!");

end

This rule actually runs w/o crashing, but fails to match...presumably because getRoles() returns a list of roles and the list is not in ("ROLE_BUYER").

Any hints how I can accomplish this?

Thanks!

Greg