[jboss-jira] [JBoss JIRA] (DROOLS-2456) Missing beta node sharing

[Mario Fusco (JIRA)]

Mario Fusco created DROOLS-2456:
-----------------------------------

             Summary: Missing beta node sharing
                 Key: DROOLS-2456
                 URL: https://issues.jboss.org/browse/DROOLS-2456
             Project: Drools
          Issue Type: Bug
          Components: core engine
            Reporter: Mario Fusco
            Assignee: Mario Fusco


The constraints of a beta node are reordered (based on their indexability) only when the node is attached to the rete network. This means that when a second not yet attached node is compared to the former one it is found not equal (and then not shared) because of the different constraints ordering as demonstrated by the following test case

{code}
    @Test
    public void testShareBetaWithConstraintReordering() {
        String str =
                "import " + Person.class.getCanonicalName() + ";" +
                "rule R1 when\n" +
                "  $s : String()\n" +
                "  $p : Person(name != $s, age == $s.length)\n" +
                "then\n" +
                "end\n" +
                "rule R2 when\n" +
                "  $s : String()\n" +
                "  $p : Person(name != $s, age == $s.length)\n" +
                "then\n" +
                "end";

        KieSession ksession = getKieSession( str );

        assertEquals( 1, ReteDumper.collectNodes( ksession ).stream().filter( BetaNode.class::isInstance ).count() );

        EntryPointNode epn = (( InternalKnowledgeBase ) ksession.getKieBase()).getRete().getEntryPointNodes().values().iterator().next();
        ObjectTypeNode otn = epn.getObjectTypeNodes().get( new ClassObjectType( Person.class ) );
        assertEquals( 1, otn.getSinks().length );
    }
{code}



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