I can't say for sure whether it would help since I don't know how all the rules for the different *EventType classes are related, but you might have a look at the "template" feature. Version 5.0 has an additional feature which will let you create bunches of similar rules from a template, inserting parameters from a collection of objects. Using this, the BizLocation rule could be easily produced in triplicate, once for each EventType.
-W On Thu, May 14, 2009 at 12:35 PM, Christoph Kramer <[email protected]> wrote: > Hi all, > i've some problems with a ClassCastException when using the > "or"-conditional element. > I have different Java-Beans which all have some string-values. Now I want > to create one rule which is able to handle every type of my classes because > it would be a lot of work to create one rule for every class. > Depending on the type of beans in the working memory the programm is > crashing with an ClassCastException. > > Here is a snippet of my drl-file with the "crashing-rule": > > rule "BizLocation" > when > $epc : EPC() > QuantityEventType(epcClass == $epc.value ,$bizLoc: bizLocation !=null > ) or AggregationEventType(childEPCs.epc contains $epc, $bizLoc : bizLocation > != null) or ObjectEventType(epcList.epc contains $epc, $bizLoc : > bizLocation != null) > then > System.out.println("BizLocation: " +$bizLoc.getId()); > end > > > There are some EPC's in the working memory and some Events (which might be > of type QuantityEventType, AggregationEventType or ObjectEventType). When > there are only ObjectEventType in the working memory, everything works fine, > but wenn there is an QuantityEventType this rule crashes with > "org.fosstrak.epcis.model.QuantityEventType cannot be cast to > org.fosstrak.epcis.model.ObjectEventType". > I've lot of other, similar rules some of them crashing, others don't. > > > Can anyone give me a hint where is the error? > > Thanks, > Christoph > > PS: Sorry for the bad english :( > _______________________________________________ > rules-users mailing list > [email protected] > https://lists.jboss.org/mailman/listinfo/rules-users >
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