Re: [rules-users] NullPointerException when using RuleAgent

Hi, Thank you for your response... So i have 2 methods readKnowledgeBase() and the main method. Both are provided below. When i run the main method i get "Unable to parse ChangeSet" error and java.io.FileNotFoundException the url specified in the change-set.xml file. I am not able to understand how to fix changeSet error. i have place the package url in the change-set.xml. do i need to save this file somewhere??? Please Help!!! public static void main(String[] args) { try { KnowledgeBase kbase = readKnowledgeBase(); StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession(); Driver d = new Driver("Isha", 18, null, "lets try it" ); ksession.insert(d); ksession.fireAllRules(); } catch (Throwable t) { t.printStackTrace(); } } private static KnowledgeBase readKnowledgeBase() throws Exception { ResourceChangeNotifier notifier = ResourceFactory.getResourceChangeNotifierService(); ResourceChangeScanner scannerService = ResourceFactory.getResourceChangeScannerService(); notifier.start(); scannerService.start(); KnowledgeAgentConfiguration kaconf = KnowledgeAgentFactory.newKnowledgeAgentConfiguration(); kaconf.setProperty("drools.agent.scanDirectories", "false"); KnowledgeAgent kagent = KnowledgeAgentFactory.newKnowledgeAgent("MyAgent", kaconf); kagent.applyChangeSet(ResourceFactory.newUrlResource("http://localhost:8080/guvnor-5.5.0.Final-jboss-as-7.0/org.drools-guvnor/org.drools.guvnor.Guvnor/package/TestIsha/LATEST")); KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase(); return kbase; } -- View this message in context: http://drools.46999.n3.nabble.com/NullPointerException-when-using-RuleAge... Sent from the Drools: User forum mailing list archive at Nabble.com.