Hi, I am also getting same error when trying to a call rule stored in guvnor. Following error I am getting: Exception in thread "main" java.lang.ClassCastException: [Lorg.drools.rule.Package; cannot be cast to org.drools.rule.Package at org.drools.agent.HttpClientImpl.fetchPackage(HttpClientImpl.java:82) at org.drools.agent.URLScanner.readPackage(URLScanner.java:171) at org.drools.agent.URLScanner.getChangeSet(URLScanner.java:143) at org.drools.agent.URLScanner.loadPackageChanges(URLScanner.java:119) at org.drools.agent.RuleAgent.checkForChanges(RuleAgent.java:427) at org.drools.agent.RuleAgent.refreshRuleBase(RuleAgent.java:379) at org.drools.agent.RuleAgent.configure(RuleAgent.java:364) at org.drools.agent.RuleAgent.init(RuleAgent.java:264) at org.drools.agent.RuleAgent.newRuleAgent(RuleAgent.java:204) at org.drools.agent.RuleAgent.newRuleAgent(RuleAgent.java:164) at org.drools.agent.RuleAgent.newRuleAgent(RuleAgent.java:273) I am using Drools 5.4 version. The error is coming when trying to get the RuleAgent: RuleAgent agent = RuleAgent.newRuleAgent("/com/model/drools.properties"); drools.properties contains: url = http://localhost:8080/guvnor/org.drools.guvnor.Guvnor/package/FeltKnapRes... name=guvnorAgent enableBasicAuthentication=True username=admin password=admin FeltKnapRestriktionerKundeMedAnl is the package name I have created in guvnor ,and I want to call one of the rule in this package. Thanks, Manasi -- View this message in context: http://drools.46999.n3.nabble.com/java-lang-ClassCastException-Lorg-drool... Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

Your's is a different issue. You either have an incorrect class path, with mixed versions. Or your client and your server are using different versions. Or you didn't tell Guvnor to recompile all it's packages, when you changed jar versions. Also your try/catch would result in no actual consequence happening - which would be pointless. Mark On 22 Jul 2013, at 11:17, Ganesh <ganeshneelekani(a)gmail.com&gt; wrote: > Hi David, > > > Thanks for response, > Exacts exception is "java.lang.ClassCastException: > [Lorg.drools.rule.Package; cannot be cast to org.drools.rule.Package " > > > And I am not handing exception in any java code .. > I am just handling it in rule part. > > ex. > > dialect "java" > no-loop > ruleflow-group "Apply Buy Discount" > > when > /*removed*/ > then > > try{ > > > System.out.println("=================================="); > System.out.println("Apply Buy Discount"); > System.out.println($discountPercent); > System.out.println($advAdditional); > System.out.println("=================================="); > $lql.setEndUserUnitPrice(applyDiscount($lql.getEndUserUnitPrice(),$discountPercent+$advAdditional)); > $lql.setTotalCost(applyDiscount($lql.getTotalCost(),$discountPercent)); > // update($lql); > > } > catch(Exception e) > { > > System.out.println(e.toString()); > > } > > Let me know if any issue. > > > Regards > Ganesh Neelekani > India > > > > > > -- > View this message in context: http://drools.46999.n3.nabble.com/java-lang-ClassCastException-Lorg-drool... > Sent from the Drools: User forum mailing list archive at Nabble.com. > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users