Re: [rules-users] uninformative rule parsing/compiling error -> org.drools.rule.Rule cannot be cast to org.drools.rule.Query

Op 24/07/2013 14:24, Davide Sottara schreef: > Two clarifications first: > > 1) Which version are you using? I am using version 5.5 > 2) Is TrackerUpdate a static class inside TrackerRemote? > In case, could you post the exact "import" statements you are using? > the TrackerUpdate is not static, but it's a class defined within the TrackerUpdate class. /public class TrackerRemote .... public class TrackerUpdate { public java.util.Date msg_time; public int sensor; public double[] pos; public double[] quat; public TrackerUpdate() { /* compiled code */ } }/ The full imports and rule is: package derooms.be.testRule import derooms.be.server.predefinedtypes.Event; import derooms.be.test.Message; import vrpn.TrackerRemote; / rule "TrackerRemote.TrackerUpdate" when message:TrackerRemote.TrackerUpdate() then System.out.println("Tracker: " + message); end/ Sorry that I didn't sent it earlier, I actually sent this e-mail already but it didn't came through. B > Thanks > Davide > > On 07/24/2013 02:14 PM, De Rooms Brecht wrote: >> Dear rules users, >> >> I am currently writing my own Drools-server since I wanted more >> control than the drools-execution server (and it never worked very >> well here) where I can send rules/facts over JMS/AQMP/STOMP. Rules >> which are sent are saved on the server-side in DRL files that are >> monitored. That way, I can debug easily by changing the sent files. >> However, when I sent the following code, the agent does not provide >> me with an error message at all and hangs: >> / >> //rule "TrackerRemote.TrackerUpdate"// >> // when// >> // message:TrackerRemote.TrackerUpdate()// >> // then// >> // System.out.println("Tracker: " + message);// >> //end/ >> >> at first I thought it was because TrackerRemote.TrackerUpdate is not >> in that package anymore and thus unknown so I tried to send the rule >> listed below which gives me the nice and expected error: >> Unable to resolve ObjectType 'NotExistingType' : [Rule name='Foo'] >> >> /rule "Foo"// >> // when // >> // NotExistingType( bloe == "test")// >> // then// >> // System.out.println("this should not work");// >> //end/ >> >> when I compile the rule myself with a KnowledgeBuilder: >> >> KnowledgeBuilder kbuilder = >> KnowledgeBuilderFactory.newKnowledgeBuilder(); >> InputStream is = new ByteArrayInputStream(drlstring.getBytes()); >> kbuilder.add( >> ResourceFactory.newInputStreamResource(is),ResourceType.DRL ); >> >> I receive the error: >> org.drools.rule.Rule cannot be cast to org.drools.rule.Query >> which I think doesn't tell me anything about the mistake I made in >> my rule, is this a Drools bug and should I post this somewhere? >> >> Kind Regards, >> De Rooms Brecht >> >> >> Full Stack: >> java.lang.ClassCastException: org.drools.rule.Rule cannot be cast to >> org.drools.rule.Query >> at >> org.drools.rule.builder.PatternBuilder.build(PatternBuilder.java:175) >> at >> org.drools.rule.builder.PatternBuilder.build(PatternBuilder.java:118) >> at >> org.drools.rule.builder.GroupElementBuilder.build(GroupElementBuilder.java:67) >> at org.drools.rule.builder.RuleBuilder.build(RuleBuilder.java:84) >> at >> org.drools.compiler.PackageBuilder.addRule(PackageBuilder.java:2706) >> at >> org.drools.compiler.PackageBuilder.compileRules(PackageBuilder.java:930) >> at >> org.drools.compiler.PackageBuilder.compileAllRules(PackageBuilder.java:839) >> at >> org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:831) >> at >> org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:467) >> at >> org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:673) >> at >> org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:45) >> at >> org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:34) >> at >> derooms.be.server.listeners.RulesListener.processMessage(RulesListener.java:33) >> at >> derooms.be.server.listeners.AbstractListener.onMessage(AbstractListener.java:35) >> at >> org.apache.activemq.ActiveMQMessageConsumer.dispatch(ActiveMQMessageConsumer.java:1321) >> at >> org.apache.activemq.ActiveMQSessionExecutor.dispatch(ActiveMQSessionExecutor.java:131) >> at >> org.apache.activemq.ActiveMQSessionExecutor.iterate(ActiveMQSessionExecutor.java:202) >> at >> org.apache.activemq.thread.PooledTaskRunner.runTask(PooledTaskRunner.java:129) >> at >> org.apache.activemq.thread.PooledTaskRunner$1.run(PooledTaskRunner.java:47) >> at >> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) >> at >> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) >> at java.lang.Thread.run(Thread.java:722) >> >> >> _______________________________________________ >> rules-users mailing list >> rules-users(a)lists.jboss.org >> https://lists.jboss.org/mailman/listinfo/rules-users > > > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users