If you cannot combine the rules into new rules I would suggest looking at rule flow.

From: rules-users-bounces@lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On Behalf Of Chong Minsk Goh
Sent: 04 April 2008 10:57
To: rules-users@lists.jboss.org
Subject: [rules-users] Rules File Design Consideration

Hi,

Any help to the problem below is much appreciated : )

Here is the problem:

I have a set of rules. Intially these rules are evaluated individually. However, now there is a need to fire these rules in groups which is similar to a logic gate AND or OR. And, the results of this "groups of rules" are collected and returned to the user/

For example:

There are 4 rules:

Rule 1

Rule 2

Rule 3

Rule 4

Now, need to evaluate (Rule 1 AND Rule 2 AND Rule 3) OR Rule 4

And I need to know what are the results of Rule 1 to Rule 4 individually.

What is the best way to implement a AND or OR using Drools?

Best regards

Chong Minsk