Re: [rules-users] About for and inheritance

Hi I stumbled upon this problem last week. I see this is a very old post, and I was wondering if a "solution" has been implemented? It seems logical to me, that "from" only matches if an element in the list matches the required subclass. This means the classcast exception is catched and causes the rule not to match. rule "likes french cheese" when $person : Person () FrenchCheese( smell == "good" ) from $person.getLikes() then System.out.println("likes french cheese"); end This rule should only match FrenchCheese, even if other subclasses of Cheese are present in the set of Cheeses (getLikes()). They way I avoid it now is using an Enum containing each Cheese class (since I can't get it working with reflection). rule "likes french cheese" when $person : Person () $cheese : Cheese( cheeseType == CheeseTypes.FrenchCheese ) from $person.getLikes() FrenchCheese( smell == "good" ) from $cheese then System.out.println("likes french cheese"); end A bit awkward in my opinion. It would be nice if drools provided for the matching itself. So again, has this "problem" evolved since 2007? Greetz Evert -- View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/About-for-and-inherit... Sent from the Drools - User mailing list archive at Nabble.com.