Greetings. I am using Drools 5.1.1's KnowledgeAgent ChangeSet functionality and have come across an issue. here is the use case: Fire up the application with a valid DRL file. Works as designed. Update the DRL file. ChangeSet senses updated file, KnowledgeBase is updated with updated rules, yadda, yadda. Works as designed. Update the DRL file and introduce errors in the LHS of the rule. For example, I changed Sensor to Sccensor in the example below and $masterId is not defined. The following is reported as expected: KnowledgeAgent rebuilding KnowledgeBase using ChangeSet [2010:11:308 09:11:515:info] KnowledgeAgent performing an incremental build of the ChangeSet [2010:11:308 09:11:843:debug] KnowledgeAgent has KnowledgeBuilder errors object=Unable to resolve ObjectType 'Sccensor' : [Rule name='18) sensorCount derived variable'] Rule Compilation error : [Rule name='18) sensorCount derived variable'] bass/enrichment/Rule_18__sensorCount_derived_variable_0.java (7:590) : $masterID cannot be resolved bass/enrichment/Rule_18__sensorCount_derived_variable_0.java (8:624) : $masterID cannot be resolved bass/enrichment/Rule_18__sensorCount_derived_variable_0.java (9:769) : $masterID cannot be resolved Update the DRL file to the previously working version. The ChangeSet never senses that the file has been updated. It just runs along checking every x seconds. Has anyone experienced this? Is there a listener that should be firing somewhere? Thanks is advance. - Eric _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

Jason, Your's sound slightly different in that you have not been able to successfully fire up your KnowledgeBase at all. Mine works, but fails once an invalid DRL file is read. In any case, I am not use PKG for my ChangeSet resources: <change-set xmlns='http://drools.org/drools-5.0/change-set' xmlns:xs='http://www.w3.org/2001/XMLSchema-instance' xs:schemaLocation='http://drools.org/drools-5.0/change-set.xsd' > <add> <resource source='file:C:/Transformations.drl' type='DRL' /> <!--resource source='classpath:bass/enrichment/rules/Transformations.drl' type='DRL' /--> </add> </change-set> I am creating the KA as follows: KnowledgeAgentConfiguration agentConfig = KnowledgeAgentFactory.newKnowledgeAgentConfiguration(); agentConfig.setProperty("drools.agent.newInstance", "false"); agent = KnowledgeAgentFactory.newKnowledgeAgent("MyAgent", agentConfig); kaListener = new KnowledgeAgentEventListenerImpl(); agent.addEventListener(kaListener); agent.applyChangeSet(ResourceFactory.newClassPathResource("rules/ChangeSet.xml")); agent.monitorResourceChangeEvents(true); ResourceChangeScannerConfiguration scannerConfig = ResourceFactory.getResourceChangeScannerService().newResourceChangeScannerConfiguration(); scannerConfig.setProperty("drools.resource.scanner.interval", "5"); ResourceFactory.getResourceChangeScannerService().configure(scannerConfig); ResourceFactory.getResourceChangeNotifierService().start(); ResourceFactory.getResourceChangeScannerService().start(); I'll keep you posted if I hear anything. - Eric -- View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/KnowledgeAgent-Change... Sent from the Drools - User mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users