Error in ContentBasedRouting

[spamujula]

Im getting a following exception when Im using ContentBasedRouter. Attached are the .drl and .esb files for your reference.

Also below is the message body if it would help.

Any help would be appreciated.


2009-12-08 15:41:48,125 DEBUG [org.jboss.soa.esb.listeners.message.ActionProcessingPipeline] Unexpected exception caught while processing the action pipeline: header: [ To: InVMEpr [ PortReference < <wsa:Address invm://4f7261636c6541515f45534224242424242424242424242453696d706c654c697374656e6572/false?false#10000/>, <wsa:ReferenceProperties jbossesb:passByValue : false/>, <wsa:ReferenceProperties jbossesb:type : urn:jboss/esb/epr/type/invm/> > ] MessageID: 2d950609-53f2-4d4d-ae08-37d26b76c849 ]
org.jboss.soa.esb.actions.ActionProcessingException: org.jboss.soa.esb.services.routing.MessageRouterException
at org.jboss.soa.esb.actions.ContentBasedWiretap.process(ContentBasedWiretap.java:159)
at org.jboss.soa.esb.actions.ContentBasedRouter.process(ContentBasedRouter.java:58)
at org.jboss.soa.esb.listeners.message.ActionProcessingPipeline.processPipeline(ActionProcessingPipeline.java:634)
at org.jboss.soa.esb.listeners.message.ActionProcessingPipeline.processPipeline(ActionProcessingPipeline.java:586)
at org.jboss.soa.esb.listeners.message.ActionProcessingPipeline.process(ActionProcessingPipeline.java:420)
at org.jboss.soa.esb.listeners.message.MessageAwareListener$TransactionalRunner.run(MessageAwareListener.java:545)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)
Caused by: org.jboss.soa.esb.services.routing.MessageRouterException
at org.jboss.internal.soa.esb.services.routing.cbr.JBossRulesRouter.route(JBossRulesRouter.java:128)
at org.jboss.soa.esb.actions.ContentBasedWiretap.executeRules(ContentBasedWiretap.java:171)
at org.jboss.soa.esb.actions.ContentBasedWiretap.process(ContentBasedWiretap.java:143)
... 8 more
Caused by: org.jboss.internal.soa.esb.services.rules.RuleServiceException
at org.jboss.internal.soa.esb.services.rules.DroolsRuleBaseHelper.getNewRuleBaseWithPackage(DroolsRuleBaseHelper.java:272)
at org.jboss.internal.soa.esb.services.rules.DroolsRuleBaseHelper.createRuleBaseFromRuleFiles(DroolsRuleBaseHelper.java:134)
at org.jboss.internal.soa.esb.services.rules.DroolsRuleService.getRuleBaseForFileBasedRules(DroolsRuleService.java:546)
at org.jboss.internal.soa.esb.services.rules.DroolsRuleService.executeStatelessRules(DroolsRuleService.java:133)
at org.jboss.internal.soa.esb.services.rules.RuleServiceCallHelper.executeRulesService(RuleServiceCallHelper.java:150)
at org.jboss.internal.soa.esb.services.rules.RuleServiceCallHelper.executeRulesService(RuleServiceCallHelper.java:65)
at org.jboss.internal.soa.esb.services.routing.cbr.JBossRulesRouter.route(JBossRulesRouter.java:123)
... 10 more
Caused by: java.lang.NullPointerException
at org.drools.common.AbstractRuleBase.addPackages(AbstractRuleBase.java:434)
at org.drools.reteoo.ReteooRuleBase.addPackage(ReteooRuleBase.java:388)
at org.jboss.internal.soa.esb.services.rules.DroolsRuleBaseHelper.getNewRuleBaseWithPackage(DroolsRuleBaseHelper.java:267)
... 16 mor

[spamujula]

Following is the .drl file

#created on: Dec 8, 2009
package com.jboss.soa.esb.routing.cbr

#list any import classes here.
import org.jboss.soa.esb.message.Message;
import org.jboss.soa.esb.message.format.MessageType;

expander XPathLanguage.dsl

#declare any global variables here
global java.util.List destinations;

rule "Routing Rule using XPATH"

when
xpathEquals "command_type", "INSERT"
then
System.out.println("Filtered INSERT Message");
Destination : "pocInsert";

end

rule "Routing Rule using XPATH"
when
xpathEquals "command_type", "UPDATE"
then
System.out.println("Filtered UPDATE Message");
Destination : "pocUpdate";
end


Following is the .esb file

<?xml version = "1.0" encoding = "UTF-8"?>



<jms-provider name="JBossMQ" connection-factory="QueueConnectionFactory">








<jms-bus busid="AQGwChannel">
<jms-message-filter dest-type="QUEUE" dest-name="MY_JQUEUE" />
</jms-bus>
</jms-provider>
<jms-provider name="JBossMQ" connection-factory="ConnectionFactory">
<jms-bus busid="AQEsbChannel">
<jms-message-filter dest-type="QUEUE" dest-name="queue/EventQueue" />
</jms-bus>
</jms-provider>





<jms-listener name="JMS-Gateway" busidref="AQGwChannel"
is-gateway="true" />
<jms-listener name="JMS-ESBListener" busidref="AQEsbChannel" />


<!-- Display the RAW message from AQ -->



<!-- Publish the message from AQ on pocTopic -->










<!-- Transform the RAW message from AQ into BusinessEvent -->








<!-- Perform Content based routing -->





<!-- If the message is for INSERTs publish on pocInsert Topic -->
<route-to destination-name="pocInsert" service-category="InsertMessage" service-name="pocInsertService"/>
<!-- If the message is for UPDATEs publish on pocUpdate Topic -->
<route-to destination-name="pocUpdate" service-category="UpdateMessage" service-name="pocUpdateService"/>




<!-- Insert Messages -->














<!-- Update Messages -->

[spamujula]

<?xml version = "1.0" encoding = "UTF-8"?>



<jms-provider name="JBossMQ" connection-factory="QueueConnectionFactory">








<jms-bus busid="AQGwChannel">
<jms-message-filter dest-type="QUEUE" dest-name="MY_JQUEUE" />
</jms-bus>
</jms-provider>
<jms-provider name="JBossMQ" connection-factory="ConnectionFactory">
<jms-bus busid="AQEsbChannel">
<jms-message-filter dest-type="QUEUE" dest-name="queue/EventQueue" />
</jms-bus>
</jms-provider>





<jms-listener name="JMS-Gateway" busidref="AQGwChannel"
is-gateway="true" />
<jms-listener name="JMS-ESBListener" busidref="AQEsbChannel" />


<!-- Display the RAW message from AQ -->



<!-- Publish the message from AQ on pocTopic -->










<!-- Transform the RAW message from AQ into BusinessEvent -->








<!-- Perform Content based routing -->





<!-- If the message is for INSERTs publish on pocInsert Topic -->
<route-to destination-name="pocInsert" service-category="InsertMessage" service-name="pocInsertService"/>
<!-- If the message is for UPDATEs publish on pocUpdate Topic -->
<route-to destination-name="pocUpdate" service-category="UpdateMessage" service-name="pocUpdateService"/>




<!-- Insert Messages -->














<!-- Update Messages -->

[mvecera]

Hello,
could you please provide more details, like ESB version, and a working example - you commented out too much information (e.g. CBR router definition)...

[spamujula]

Martin - I sent you an email on the info you requested. Somehow I can't attach files to the ticket.

[mvecera]

Try omitting the DSL reference from the DRL file.

The exception is about the package. Try removing the package definition or using a different package.

Please note that those are just blind shots...

[spamujula]

martin -
I removed the package definition in the .drl file, but I still get the same error.

[spamujula]

I got it working. The prefix for the namespace was missing. This caused drools rules to fail.