[jboss-jira] [JBoss JIRA] (DROOLS-930) ClassCastException after segment split during incremental compilation

[Mario Fusco (JIRA)]

Mario Fusco created DROOLS-930:
----------------------------------

             Summary: ClassCastException after segment split during incremental compilation
                 Key: DROOLS-930
                 URL: https://issues.jboss.org/browse/DROOLS-930
             Project: Drools
          Issue Type: Bug
            Reporter: Mario Fusco
            Assignee: Mario Fusco


A segment split during an incremental compilation as in the following test case 

{code}
    @Test
    public void testSegmentSplitOnIncrementalCompilation() throws Exception {
        String drl =
                "import " + Person.class.getCanonicalName() + "\n" +
                "rule R1 when\n" +
                "  $s : String()" +
                "  Person( name == $s ) \n" +
                "then\n" +
                "  System.out.println(\"Triggered: R1\");\n" +
                "end\n" +
                "rule R2 when\n" +
                "  $s : String()" +
                "  Person( name == $s ) \n" +
                "then\n" +
                "  System.out.println(\"Triggered: R2\");\n" +
                "end\n" +
                "rule R3 when\n" +
                "  $s : String()" +
                "  Person( name != $s ) \n" +
                "then\n" +
                "  System.out.println(\"Triggered: R3\");\n" +
                "end\n";

        KieServices ks = KieServices.Factory.get();

        ReleaseId releaseId1 = ks.newReleaseId("org.kie", "test-upgrade", "1.1.1");
        KieModule km = createAndDeployJar(ks, releaseId1);

        KieContainer kc = ks.newKieContainer(km.getReleaseId());
        KieSession ksession = kc.newKieSession();

        kc.updateToVersion(releaseId1);
        ksession.insert(new Person("John", 26));
        ksession.insert( "John" );
        ksession.fireAllRules();

        ReleaseId releaseId2 = ks.newReleaseId("org.kie", "test-upgrade", "1.1.2");
        km = createAndDeployJar(ks, releaseId2, drl);

        kc.updateToVersion(releaseId2);
        ksession.fireAllRules();
    }
{code}

may cause the following ClassCastException during the subsequent network evaluation

{code}
java.lang.ClassCastException: org.drools.core.reteoo.RuleTerminalNode cannot be cast to org.drools.core.reteoo.LeftInputAdapterNode
	at org.drools.core.phreak.RuleNetworkEvaluator.evaluateNetwork(RuleNetworkEvaluator.java:99)
	at org.drools.core.phreak.RuleExecutor.reEvaluateNetwork(RuleExecutor.java:194)
	at org.drools.core.phreak.RuleExecutor.evaluateNetworkAndFire(RuleExecutor.java:73)
	at org.drools.core.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:978)
	at org.drools.core.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1292)
	at org.drools.core.impl.StatefulKnowledgeSessionImpl.internalFireAllRules(StatefulKnowledgeSessionImpl.java:1294)
	at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1281)
	at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1260)
	at org.drools.compiler.integrationtests.IncrementalCompilationTest.testSegmentSplit(IncrementalCompilationTest.java:2001)
{code}



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