[rules-users] Error in MVEL execution (optimization?)

I hardly got any viewers (and no responses) when I posted this just as "MVEL Optimization" ... so I have changed the subject and re-posted (my apologies if I just broke protocol). I'm not sure how to explain this, other than it appears that MVEL is trying to optimize the When conditions in my rules. I have a utility class, Test, with a number of methods on it (including null protected versions of Drools "in" and "matches"). Note that the valueInList method can return null (e.g. if the product code is null), and the getAgeAsInt method can also return null (if the age is null). I don't like having to test if the result of the method is true, but I kept running into null pointer errors in the Drools expression evaluation code and had to adopt this convention. Here are two example rules (one in Java dialect and one in MVEL dialect). I realize that a list of one is a degenerate case for using 'inList', but it should still work. rule "Term 15Plus Max Age - Washington" dialect "java" when $ea : EasyApp( Test.valueInList($ea.getEaProductCode(), "L15P")==true && Test.valueInList($ea.getEaIssueState(), "WA")==true && $ea.getPriIns_xmPerson().getAgeAsInt() > 65 ) then $ea.addError(drools.getRule().getName()); end rule "Term 20 Max Age - New Jersey" when $ea : EasyApp( Test.valueInList(eaProductCode, "L20")==true && Test.valueInList(eaIssueState, "NJ")==true && priIns_xmPerson.ageAsInt > 64 ) then $ea.addError(drools.getRule().getName()); end I have approximately 30 different rules similar to those above. When I have the rules written in MVEL, it appears to be only be evaluating one rule per EasyApp injection (I have a log message when ever valueInList is called), and I get bogus results. However, when I shift to java dialect then it appears that the methods are called for each rule I have defined (as I would have expected). Can anyone tell me if I am doing something wrong, and explain why Drools is behaving as it is? Thanks -- View this message in context: http://drools.46999.n3.nabble.com/Error-in-MVEL-execution-optimization-tp... Sent from the Drools: User forum mailing list archive at Nabble.com.