Hi all, Suppose I implement the comparable interface to my objects and overwrite the compareTo method. This would allow me to use the common operators to evaluate my objects in LHS of a rule. But does this also allow the rule engine to index the results or is it just translated behind the scenes to an eval statement? Would there be any theoretical performance improvement? Thanks a lot. Regards, Frank -- View this message in context: http://drools.46999.n3.nabble.com/Indexing-possible-when-implementing-com... Sent from the Drools: User forum mailing list archive at Nabble.com.