[jboss-jira] [JBoss JIRA] (DROOLS-1361) Infinite loop when updating a fact inside a shared subnetwork

[Alessandro Lazarotti (JIRA)]

Alessandro Lazarotti created DROOLS-1361:
--------------------------------------------

             Summary: Infinite loop when updating a fact inside a shared subnetwork
                 Key: DROOLS-1361
                 URL: https://issues.jboss.org/browse/DROOLS-1361
             Project: Drools
          Issue Type: Bug
          Components: core engine
            Reporter: Alessandro Lazarotti
            Assignee: Mario Fusco
            Priority: Critical


Updating a fact evaluated inside a shared subnetwork may cause an infinite loop as demonstrated by the following unit test:

{code}
    @Test(timeout = 10000L)
    public void testUpdateOnSharedSubnetwork() {
        String drl =
                "import " + AtomicInteger.class.getCanonicalName() + ";\n" +
                "global java.util.List list;\n" +
                "rule R1y when\n" +
                "    AtomicInteger() \n" +
                "    Number() from accumulate ( AtomicInteger( ) and $s : String( ) ; count($s) )" +
                "    eval(false)\n" +
                "then\n" +
                "end\n" +
                "\n" +
                "rule R2 when\n" +
                "    $i : AtomicInteger( get() < 3 )\n" +
                "then\n" +
                "    $i.incrementAndGet();" +
                "    insert(\"test\" + $i.get());" +
                "    update($i);" +
                "end\n" +
                "\n" +
                "rule R1x when\n" +
                "    AtomicInteger() \n" +
                "    $c : Number() from accumulate ( AtomicInteger( ) and $s : String( ) ; count($s) )\n" +
                "    eval(true)\n" +
                "then\n" +
                "    list.add($c);" +
                "end\n";

        KieSession kieSession = new KieHelper().addContent( drl, ResourceType.DRL )
                                               .build().newKieSession();

        List<Number> list = new ArrayList<Number>();
        kieSession.setGlobal( "list", list );

        kieSession.insert( new AtomicInteger( 0 ) );
        kieSession.insert( "test" );

        kieSession.fireAllRules();

        assertEquals(1, list.size());
        assertEquals(4, list.get(0).intValue());
    }
{code}



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