Inheritance of events does not work as one would expect when using working memory entry-points ---------------------------------------------------------------------------------------------- Key: JBRULES-2436 URL: https://jira.jboss.org/jira/browse/JBRULES-2436 Project: Drools Issue Type: Bug Security Level: Public (Everyone can see) Components: drools-core (fusion) Reporter: Jerome Bernard Assignee: Mark Proctor When using working memory entry-points, I have a different behaviour than when I use the session. Here is a test illustrating this: package org.drools.test; import org.drools.KnowledgeBase; import org.drools.KnowledgeBaseConfiguration; import org.drools.KnowledgeBaseFactory; import org.drools.builder.KnowledgeBuilder; import org.drools.builder.KnowledgeBuilderFactory; import org.drools.builder.ResourceType; import org.drools.conf.EventProcessingOption; import org.drools.io.ResourceFactory; import org.drools.logger.KnowledgeRuntimeLoggerFactory; import org.drools.runtime.StatefulKnowledgeSession; import org.drools.runtime.rule.WorkingMemoryEntryPoint; import org.junit.After; import org.junit.Before; import org.junit.Test; import java.io.StringReader; public class DroolsFusionInheritanceBugsTest { private StatefulKnowledgeSession session; private WorkingMemoryEntryPoint stream; private final static String drl = "package org.drools.test;\n" + "declare A\n" + " @role(event)\n" + "end\n" + "\n" + "rule \"myrule\"\n" + "when\n" + " $a : A() from entry-point \"mystream\"\n" + "then\n" + " System.out.println(\"fired!\");\n" + "end\n"; @Test public void testOkWithEventsInheritance() { session.insert(new A()); session.insert(new B()); session.fireAllRules(); } @Test public void testFailsWithEventsInheritanceThroughWorkingMemoryEntryPoint() { stream.insert(new A()); stream.insert(new B()); session.fireAllRules(); } @Before public void setupDrools() { KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder(); System.out.println("DRL is:\n" + drl); kbuilder.add(ResourceFactory.newReaderResource(new StringReader(drl)), ResourceType.DRL); KnowledgeBaseConfiguration conf = KnowledgeBaseFactory.newKnowledgeBaseConfiguration(); conf.setOption(EventProcessingOption.STREAM); KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase(conf); kbase.addKnowledgePackages(kbuilder.getKnowledgePackages()); session = kbase.newStatefulKnowledgeSession(); assert session != null; KnowledgeRuntimeLoggerFactory.newConsoleLogger(session); stream = session.getWorkingMemoryEntryPoint("mystream"); assert stream != null : "Could not find working memory entry-point 'mystream'"; } @After public void releaseDroolsSession() { if (session != null) session.dispose(); } } class A {} class B extends A { } When using working memory entry-points, the insert of a B instances fails with a: java.lang.ClassCastException: org.drools.common.DefaultFactHandle cannot be cast to org.drools.common.EventFactHandle -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira