Schema Error with Drools spring xsd
by Mohod, Akash
Hi ,
I am using Drools 5.1 with Srping 3.0 . I am getting these errors working in Eclipse :-
org.xml.sax.SAXParseException: schema_reference.4: Failed to read schema document 'http://anonsvn.jboss.org/repos/labs/labs/jbossrules/trunk/drools-containe...', because 1) could not find the document; 2) the document could not be read; 3) the root element of the document is not <xsd:schema>.
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:195) [na:1.6.0_19]
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.warning(ErrorHandlerWrapper.java:96) [na:1.6.0_19]
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:380) [na:1.6.0_19]
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:318) [na:1.6.0_19]
at com.sun.org.apache.xerces.internal.impl.xs.traversers.XSDHandler.reportSchemaErr(XSDHandler.java:2541) [na:1.6.0_19]
at com.sun.org.apache.xerces.internal.impl.xs.traversers.XSDHandler.reportSchemaWarning(XSDHandler.java:2532) [na:1.6.0_19]
at com.sun.org.apache.xerces.internal.impl.xs.traversers.XSDHandler.getSchemaDocument(XSDHandler.java:1836) [na:1.6.0_19]
at com.sun.org.apache.xerces.internal.impl.xs.traversers.XSDHandler.parseSchema(XSDHandler.java:531) [na:1.6.0_19]
Any help is appreciated.
Regards,
Akash
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15 years, 9 months
Fixing the "Discouraged access" Eclipse warnings makes all org.drools.* import unresolved
by maurizio
Hi all,
within Eclipse I'm getting several warnings like "Discourages access: the
type SessionPseudoClock is not accessible due to restriction on required
library drools-core.jar". I cannot really understand why using
SessionPseudoClock just as explained in the Fusion manual should be
avoided. Anyway in another thread Kris Verlaenen suggested "You can easily
turn them off by doing: Windows - Preferences -> select Drools on the left
and change the Internal rule classes setting to accessible." Unfortunatly by
doing so I only get a lot of "The import org.drools cannot be resolved"
errors : all drools imports are no more resolved.
Any comment and suggestion will be most welcome.
Thanks and Best regards,
Maurizio
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15 years, 9 months
drools quirks
by Matt Young
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Hash: SHA1
I just started using drools and this is my first time implementing a
rules engine. Everything has been pretty smooth but I have some
quirks that I am not sure I can live with.
1) for some reason, if I execute the Knowlege session against an
object, the knowlege session never returns. The only way I can get
the ksession to return is to make IF (obj == null) part of the LHS and
make modify($input){setObj("complete")} part of the RHS
This seems like a deficiency since I have users writing their own
rules, I can see them forgetting this requirement. IS their a way to
get the ksession to firerules only once? If so what does that look like?
2) It seems that any code I want can be executed in the RHS. I could
literally execute something like the following in the RHS.
byte[] b= new byte[10000000000000]; // Really big memory waste
I also could just start a bunch of threads.
The point is that I am intending to let the users write their own
rules but I can't do that if there are no restrictions on how/what can
be done inside the rules. Any suggestions? Are there sandboxes or
filters I can activate to restrict the RHS?
- --
Cheers,
Matt Young
solid(a)youngdev.net
http://youngdev.net
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15 years, 9 months
calling a function from "when"
by Kripa Nathwani
Hello,
I need to know whether it is possible to call a function from within a "when" condition?
I am currently trying with a simple print function just for checking but it is not working.
Best Regards,
Kripa
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15 years, 9 months
Flow Timer causes exception: Caused by: java.util.concurrent.RejectedExecutionException
by Gustavo Tenrreiro
Hi,
I have a flow and a set of rules.
In the flow I have a wait state. If the wait state has a timer, when
the flow reaches the node it blows up with the following exception (
See Below ), if I remove the timer everything works.
INFO 2010-09-18 16:26:28 [ERROR]
com.kgcontrols.services.raytheon.standardsRequests.workflow.managers.DroolsEventsManager
Could not commit session
java.lang.RuntimeException: Could not commit session
at org.drools.persistence.session.SingleSessionCommandService.execute(SingleSessionCommandService.java:292)
at org.drools.command.impl.CommandBasedStatefulKnowledgeSession.execute(CommandBasedStatefulKnowledgeSession.java:434)
at com.kgcontrols.services.raytheon.standardsRequests.workflow.managers.DroolsEventsManager.sendEvent(DroolsEventsManager.java:43)
at com.kgcontrols.services.raytheon.standardsRequests.workflow.Rule_domainLeadReject_0.defaultConsequence(Rule_domainLeadReject_0.java:10)
at com.kgcontrols.services.raytheon.standardsRequests.workflow.Rule_domainLeadReject_0DefaultConsequenceInvoker.evaluate(Rule_domainLeadReject_0DefaultConsequenceInvoker.java:34)
at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:917)
at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:856)
at org.drools.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1071)
at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:785)
at org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:751)
at org.drools.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:218)
at org.drools.command.runtime.rule.FireAllRulesCommand.execute(FireAllRulesCommand.java:99)
at org.drools.command.runtime.rule.FireAllRulesCommand.execute(FireAllRulesCommand.java:33)
at org.drools.persistence.session.SingleSessionCommandService.execute(SingleSessionCommandService.java:279)
at org.drools.command.impl.CommandBasedStatefulKnowledgeSession.fireAllRules(CommandBasedStatefulKnowledgeSession.java:201)
at com.kgcontrols.services.raytheon.standardsRequests.workflow.listeners.VoteCreatedEventListener.onMessage(VoteCreatedEventListener.java:78)
at org.apache.activemq.ActiveMQMessageConsumer.dispatch(ActiveMQMessageConsumer.java:854)
at org.apache.activemq.ActiveMQSessionExecutor.dispatch(ActiveMQSessionExecutor.java:99)
at org.apache.activemq.ActiveMQSessionExecutor.iterate(ActiveMQSessionExecutor.java:166)
at org.apache.activemq.thread.PooledTaskRunner.runTask(PooledTaskRunner.java:117)
at org.apache.activemq.thread.PooledTaskRunner.access$100(PooledTaskRunner.java:26)
at org.apache.activemq.thread.PooledTaskRunner$1.run(PooledTaskRunner.java:44)
at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.util.concurrent.RejectedExecutionException
at java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(ThreadPoolExecutor.java:1768)
at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:767)
at java.util.concurrent.ScheduledThreadPoolExecutor.delayedExecute(ScheduledThreadPoolExecutor.java:216)
at java.util.concurrent.ScheduledThreadPoolExecutor.schedule(ScheduledThreadPoolExecutor.java:379)
at org.drools.time.impl.JDKTimerService.schedule(JDKTimerService.java:102)
at org.drools.time.impl.JDKTimerService.scheduleJob(JDKTimerService.java:80)
at org.drools.process.instance.timer.TimerManager.registerTimer(TimerManager.java:60)
at org.drools.workflow.instance.node.StateBasedNodeInstance.internalTrigger(StateBasedNodeInstance.java:56)
at org.drools.workflow.instance.node.CompositeNodeInstance.internalTrigger(CompositeNodeInstance.java:86)
at org.drools.workflow.instance.node.StateNodeInstance.internalTrigger(StateNodeInstance.java:48)
at org.drools.workflow.instance.impl.NodeInstanceImpl.trigger(NodeInstanceImpl.java:117)
at org.drools.workflow.instance.impl.NodeInstanceImpl.triggerConnection(NodeInstanceImpl.java:178)
at org.drools.workflow.instance.impl.NodeInstanceImpl.triggerCompleted(NodeInstanceImpl.java:144)
at org.drools.workflow.instance.impl.ExtendedNodeInstanceImpl.triggerCompleted(ExtendedNodeInstanceImpl.java:53)
at org.drools.workflow.instance.node.StateBasedNodeInstance.triggerCompleted(StateBasedNodeInstance.java:117)
at org.drools.workflow.instance.node.StateBasedNodeInstance.triggerCompleted(StateBasedNodeInstance.java:98)
at org.drools.workflow.instance.node.WorkItemNodeInstance.triggerCompleted(WorkItemNodeInstance.java:201)
at org.drools.workflow.instance.node.WorkItemNodeInstance.workItemCompleted(WorkItemNodeInstance.java:258)
at org.drools.workflow.instance.node.WorkItemNodeInstance.signalEvent(WorkItemNodeInstance.java:234)
at org.drools.workflow.instance.impl.WorkflowProcessInstanceImpl.signalEvent(WorkflowProcessInstanceImpl.java:337)
at org.drools.persistence.processinstance.JPAWorkItemManager.completeWorkItem(JPAWorkItemManager.java:99)
at org.drools.process.workitem.email.EmailWorkItemHandler.executeWorkItem(EmailWorkItemHandler.java:104)
at org.drools.persistence.processinstance.JPAWorkItemManager.internalExecuteWorkItem(JPAWorkItemManager.java:45)
at org.drools.workflow.instance.node.WorkItemNodeInstance.internalTrigger(WorkItemNodeInstance.java:101)
at org.drools.workflow.instance.impl.NodeInstanceImpl.trigger(NodeInstanceImpl.java:117)
at org.drools.workflow.instance.impl.NodeInstanceImpl.triggerConnection(NodeInstanceImpl.java:178)
at org.drools.workflow.instance.node.SplitInstance.internalTrigger(SplitInstance.java:94)
at org.drools.workflow.instance.impl.NodeInstanceImpl.trigger(NodeInstanceImpl.java:117)
at org.drools.workflow.instance.impl.NodeInstanceImpl.triggerConnection(NodeInstanceImpl.java:178)
at org.drools.workflow.instance.impl.NodeInstanceImpl.triggerCompleted(NodeInstanceImpl.java:144)
at org.drools.workflow.instance.node.JoinInstance.triggerCompleted(JoinInstance.java:152)
at org.drools.workflow.instance.node.JoinInstance.internalTrigger(JoinInstance.java:52)
at org.drools.workflow.instance.impl.NodeInstanceImpl.trigger(NodeInstanceImpl.java:117)
at org.drools.workflow.instance.impl.NodeInstanceImpl.triggerConnection(NodeInstanceImpl.java:178)
at org.drools.workflow.instance.impl.NodeInstanceImpl.triggerCompleted(NodeInstanceImpl.java:144)
at org.drools.workflow.instance.node.EventNodeInstance.triggerCompleted(EventNodeInstance.java:66)
at org.drools.workflow.instance.node.EventNodeInstance.signalEvent(EventNodeInstance.java:50)
at org.drools.workflow.instance.impl.WorkflowProcessInstanceImpl.signalEvent(WorkflowProcessInstanceImpl.java:351)
at org.drools.command.runtime.process.SignalEventCommand.execute(SignalEventCommand.java:95)
at org.drools.impl.StatefulKnowledgeSessionImpl.execute(StatefulKnowledgeSessionImpl.java:879)
at org.drools.impl.StatefulKnowledgeSessionImpl.execute(StatefulKnowledgeSessionImpl.java:862)
at org.drools.command.ExecuteCommand.execute(ExecuteCommand.java:50)
at org.drools.command.ExecuteCommand.execute(ExecuteCommand.java:31)
at org.drools.persistence.session.SingleSessionCommandService.execute(SingleSessionCommandService.java:279)
... 24 more
INFO 2010-09-18 16:26:28 [ERROR]
com.kgcontrols.services.raytheon.standardsRequests.workflow.listeners.VoteCreatedEventListener
Unable to consume Vote created event: Could not commit session or
rollback
java.lang.RuntimeException: Could not commit session or rollback
at org.drools.persistence.session.SingleSessionCommandService.execute(SingleSessionCommandService.java:289)
at org.drools.command.impl.CommandBasedStatefulKnowledgeSession.fireAllRules(CommandBasedStatefulKnowledgeSession.java:201)
at com.kgcontrols.services.raytheon.standardsRequests.workflow.listeners.VoteCreatedEventListener.onMessage(VoteCreatedEventListener.java:78)
at org.apache.activemq.ActiveMQMessageConsumer.dispatch(ActiveMQMessageConsumer.java:854)
at org.apache.activemq.ActiveMQSessionExecutor.dispatch(ActiveMQSessionExecutor.java:99)
at org.apache.activemq.ActiveMQSessionExecutor.iterate(ActiveMQSessionExecutor.java:166)
at org.apache.activemq.thread.PooledTaskRunner.runTask(PooledTaskRunner.java:117)
at org.apache.activemq.thread.PooledTaskRunner.access$100(PooledTaskRunner.java:26)
at org.apache.activemq.thread.PooledTaskRunner$1.run(PooledTaskRunner.java:44)
at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.RuntimeException: Unable to rollback transaction
at org.drools.persistence.session.JtaTransactionManager.rollback(JtaTransactionManager.java:181)
at org.drools.persistence.session.SingleSessionCommandService.execute(SingleSessionCommandService.java:287)
... 11 more
Caused by: java.lang.IllegalStateException: no transaction started on
this thread
at bitronix.tm.BitronixTransactionManager.rollback(BitronixTransactionManager.java:111)
at org.drools.persistence.session.JtaTransactionManager.rollback(JtaTransactionManager.java:178)
... 12 more
Can someone point me in the right direction.
Thanks
15 years, 9 months
LHS compare two lists
by lnguyen
Hi,
I'm trying to determine if a user has the required certifications for a
position. So I'm comparing the list of required certifications to the list
of User Certifications but I'm throwing a nullPointerException even though I
check to make sure the list are not null on their respective objects. How do
I iterate between both list?
rule "Determine if the user has the required certifications"
dialect 'mvel'
no-loop true
salience 80
when
$user : User()
$profile : UserProfile($userCertifications : userCertifications,
eval(userCertifications != null)) from $user.userProfile
$position : Position($certifications : requiredCertifications,
eval(requiredCertifications != null))
exists ($certification: Certification() from $certifications and
UserCertification(certification == $certification) from $userCertifications)
then
System.out.println("The user has the required certifications");
end
public UserProfile
{
List<UserCertification> userCertifications;
//more fields
}
public Position
{
List<Certification> requiredCertifications;
//more fields
}
public Certification
{
Long id;
String name;
//more fields
}
public UserCertification
{
Long id;
Date certificationDate;
Certification certification;
//more fields
}
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15 years, 9 months
Drools flow and BPEL (Drools 5.1)
by tim
Hello,
I am studying how to integrate Drools 5.1 into our product. And we will need
a BPEL engine embedded in Drools. I read from the "Drools Flow User Guide"
that "the Drools Flow engine is based on a generic process engine that
allows the definition and execution of different types of process languages,
like for example our RuleFlow language, WS-BPEL ..." But I can't find any
documentation or examples available for using BPEL in Drools. If you have
done something similar, please let me know. Any suggestion will be helpful!
Thanks in advarce!
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15 years, 9 months
drools syntax highlighting editor
by Matt Young
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Hash: SHA1
is there a drools syntax highlighting widget along the lines of
tinymce for regular html pages. I'm certain there is a seam or JSF
component but my application is a JSP based springmvc application and
I would like to not have to migrate to something else, just to
provided a good rules editor in my application.
- --
Cheers,
Matt Young
solid(a)youngdev.net
http://youngdev.net
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15 years, 9 months
Re: [rules-users] Welcome to the "rules-users" mailing list
by Aman
Hello,
I can see Drools 5.1 is going to add support for Spring integration.
How about Seams, I think it is already integrated, because in all
presentations, I haven't seen anyone referring to Seam.
Thanks
-----Original Message-----
From: rules-users-bounces(a)lists.jboss.org
[mailto:rules-users-bounces@lists.jboss.org] On Behalf Of
rules-users-request(a)lists.jboss.org
Sent: Saturday, September 18, 2010 2:25 PM
To: boy18nj(a)gmail.com
Subject: Welcome to the "rules-users" mailing list
Welcome to the rules-users(a)lists.jboss.org mailing list!
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15 years, 9 months
