[jboss-jira] [JBoss JIRA] Updated: (JBRULES-3139) NPE in KnowledgeAgentImpl due to missing change set

NPE in KnowledgeAgentImpl due to missing change set --------------------------------------------------- Key: JBRULES-3139 URL: https://issues.jboss.org/browse/JBRULES-3139 Project: Drools Issue Type: Bug Security Level: Public(Everyone can see) Components: drools-core (expert) Reporter: Wolfgang Laun Assignee: Edson Tirelli A missing Change Set causes a NPE in KnowledgeAgentImpl. import java.net.URL; import org.drools.*; import org.drools.agent.*; import org.drools.conf.*; import org.drools.builder.*; import org.drools.io.*; public void setup() throws Exception { KnowledgeBaseConfiguration kBaseConfig = KnowledgeBaseFactory.newKnowledgeBaseConfiguration(); kBaseConfig.setOption(EventProcessingOption.STREAM); // kBaseConfig.setOption( cehOption ); ResourceChangeScannerConfiguration rcsConf = ResourceFactory.getResourceChangeScannerService() .newResourceChangeScannerConfiguration(); rcsConf.setProperty("drools.resource.scanner.interval", "20"); ResourceFactory.getResourceChangeScannerService().configure( rcsConf ); KnowledgeAgentConfiguration kaConf = KnowledgeAgentFactory.newKnowledgeAgentConfiguration(); kaConf.setProperty("drools.agent.scanDirectories", "true"); kaConf.setProperty("drools.agent.scanResources", "true"); kaConf.setProperty("drools.agent.newInstance", "false"); KnowledgeBase kBase = KnowledgeBaseFactory.newKnowledgeBase(kBaseConfig); KnowledgeAgent kAgent = KnowledgeAgentFactory.newKnowledgeAgent( "drools agent", kBase, kaConf); String urlString = "file://tmp/MissingChangeSet.xml"; try { URL url = new URL(urlString); Resource urlResource = ResourceFactory.newUrlResource(url); if( urlResource != null ){ System.out.println( "Resource " + urlResource ); } kAgent.applyChangeSet( urlResource ); } catch (Exception e) { System.out.println("Caught exception: " + e.getMessage()); e.printStackTrace(); } } Caught exception: null java.lang.NullPointerException at org.drools.agent.impl.KnowledgeAgentImpl.processChangeSet(KnowledgeAgentImpl.java:223) at org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:189) at org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:174) at hashcode.Main.setup(Main.java:75)