Re: [rules-users] uninformative rule parsing/compiling error - org.drools.rule.Rule cannot be cast to org.drools.rule.Query
I could not reproduce the issue..
could you submit a self-contained, obfuscated test case (DRL + classes)?
I suspect you are leaving out some detail which is the real cause of the
error
Thanks
Davide
p.s. I used this mock class:
package vrpn;
public class TrackerRemote {
public TrackerUpdate getUpdate() {
return new TrackerUpdate();
}
public class TrackerUpdate {
}
}
and your rule, removing the message from the RHS
On 07/30/2013 01:51 AM, De Rooms Brecht wrote:
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
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)
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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?
Version 5.4.0.Final
2) Is TrackerUpdate a static class inside TrackerRemote?
In case, could you post the exact import statements you are using?
It is a normal class inside TrackerRemote.
public class TrackerRemote extends vrpn.VRPNDevice implements
java.lang.Runnable {
public class TrackerUpdate {...
I imported:
import vrpn.TrackerRemote;
and used it as follows:
rule TrackerRemote.TrackerUpdate
when
message:TrackerRemote.TrackerUpdate()
then
System.out.println(Tracker: + message);
end
Extra information:
I have been trying to add type declarations in one file and import them
in another and I get exactly the same error message. There I did this:
package derooms.be.testRule
declare TestEvent
@typesafe(false)
number : int
message : String
end
and then a rule:
package derooms.be.testRule
rule TestEvent
when
event:TestEvent(message == doesDynamicEventTypeWork?)
then
System.out.println(Got Event: + event.data);
end
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Re: [rules-users] uninformative rule parsing/compiling error - org.drools.rule.Rule cannot be cast to org.drools.rule.Query
Two clarifications first: 1) Which version are you using? 2) Is TrackerUpdate a static class inside TrackerRemote? In case, could you post the exact import statements you are using? 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@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
