@Test
  public void testPersistenceRuleSet() {
    KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
    kbuilder.add(new ClassPathResource("RuleSetProcess.rf"), ResourceType.DRF);
    kbuilder.add(new ClassPathResource("RuleSetRules.drl"), ResourceType.DRL);
    KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
    kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());

    StatefulKnowledgeSession ksession =
        JPAKnowledgeService.newStatefulKnowledgeSession(kbase, null, env);
    int id = ksession.getId();

    ksession.insert(new ArrayList<Object>());

    ksession = JPAKnowledgeService.loadStatefulKnowledgeSession(id, kbase, null, env);
    ProcessInstance processInstance = ksession.startProcess("org.drools.test.TestProcess");

    ksession = JPAKnowledgeService.loadStatefulKnowledgeSession(id, kbase, null, env);
    processInstance = ksession.getProcessInstance(processInstance.getId());
    assertNotNull(processInstance);

    ksession = JPAKnowledgeService.loadStatefulKnowledgeSession(id, kbase, null, env);
    ksession.fireAllRules();
    processInstance = ksession.getProcessInstance(processInstance.getId());
    assertNull(processInstance);
  }
  @Test
  public void testPersistenceWorkItems() {
    KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
    kbuilder.add(new ClassPathResource("WorkItemsProcess.rf"), ResourceType.DRF);
    KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
    kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());

    StatefulKnowledgeSession ksession =
        JPAKnowledgeService.newStatefulKnowledgeSession(kbase, null, env);
    int origNumObjects = ksession.getObjects().size();
    int id = ksession.getId();

    ProcessInstance processInstance = ksession.startProcess("org.drools.test.TestProcess");
    ksession.insert("TestString");
    logger.debug("Started process instance {}", processInstance.getId());

    TestWorkItemHandler handler = TestWorkItemHandler.getInstance();
    WorkItem workItem = handler.getWorkItem();
    assertNotNull(workItem);

    ksession = JPAKnowledgeService.loadStatefulKnowledgeSession(id, kbase, null, env);
    processInstance = ksession.getProcessInstance(processInstance.getId());
    assertNotNull(processInstance);

    ksession = JPAKnowledgeService.loadStatefulKnowledgeSession(id, kbase, null, env);
    ksession.getWorkItemManager().completeWorkItem(workItem.getId(), null);

    workItem = handler.getWorkItem();
    assertNotNull(workItem);

    ksession = JPAKnowledgeService.loadStatefulKnowledgeSession(id, kbase, null, env);
    processInstance = ksession.getProcessInstance(processInstance.getId());
    assertNotNull(processInstance);

    ksession = JPAKnowledgeService.loadStatefulKnowledgeSession(id, kbase, null, env);
    ksession.getWorkItemManager().completeWorkItem(workItem.getId(), null);

    workItem = handler.getWorkItem();
    assertNotNull(workItem);

    ksession = JPAKnowledgeService.loadStatefulKnowledgeSession(id, kbase, null, env);
    processInstance = ksession.getProcessInstance(processInstance.getId());
    assertNotNull(processInstance);

    ksession = JPAKnowledgeService.loadStatefulKnowledgeSession(id, kbase, null, env);
    ksession.getWorkItemManager().completeWorkItem(workItem.getId(), null);

    workItem = handler.getWorkItem();
    assertNull(workItem);

    ksession = JPAKnowledgeService.loadStatefulKnowledgeSession(id, kbase, null, env);
    processInstance = ksession.getProcessInstance(processInstance.getId());
    assertEquals(origNumObjects + 1, ksession.getObjects().size());
    for (Object o : ksession.getObjects()) {
      logger.debug(o.toString());
    }
    assertNull(processInstance);
  }
  @Test
  public void testPersistenceVariables() {
    KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
    kbuilder.add(new ClassPathResource("VariablesProcess.rf"), ResourceType.DRF);
    for (KnowledgeBuilderError error : kbuilder.getErrors()) {
      logger.debug(error.toString());
    }
    KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
    kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());

    StatefulKnowledgeSession ksession =
        JPAKnowledgeService.newStatefulKnowledgeSession(kbase, null, env);
    int id = ksession.getId();

    Map<String, Object> parameters = new HashMap<String, Object>();
    parameters.put("name", "John Doe");
    ProcessInstance processInstance =
        ksession.startProcess("org.drools.test.TestProcess", parameters);

    TestWorkItemHandler handler = TestWorkItemHandler.getInstance();
    WorkItem workItem = handler.getWorkItem();
    assertNotNull(workItem);
    assertEquals("John Doe", workItem.getParameter("name"));

    ksession = JPAKnowledgeService.loadStatefulKnowledgeSession(id, kbase, null, env);
    processInstance = ksession.getProcessInstance(processInstance.getId());
    assertNotNull(processInstance);

    ksession = JPAKnowledgeService.loadStatefulKnowledgeSession(id, kbase, null, env);
    ksession.getWorkItemManager().completeWorkItem(workItem.getId(), null);

    workItem = handler.getWorkItem();
    assertNotNull(workItem);
    assertEquals("John Doe", workItem.getParameter("text"));

    ksession = JPAKnowledgeService.loadStatefulKnowledgeSession(id, kbase, null, env);
    processInstance = ksession.getProcessInstance(processInstance.getId());
    assertNotNull(processInstance);

    ksession = JPAKnowledgeService.loadStatefulKnowledgeSession(id, kbase, null, env);
    ksession.getWorkItemManager().completeWorkItem(workItem.getId(), null);

    workItem = handler.getWorkItem();
    assertNull(workItem);

    ksession = JPAKnowledgeService.loadStatefulKnowledgeSession(id, kbase, null, env);
    processInstance = ksession.getProcessInstance(processInstance.getId());
    assertNull(processInstance);
  }
  @Test
  public void testPersistenceSubProcess() {
    KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
    kbuilder.add(new ClassPathResource("SuperProcess.rf"), ResourceType.DRF);
    kbuilder.add(new ClassPathResource("SubProcess.rf"), ResourceType.DRF);
    KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
    kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());

    StatefulKnowledgeSession ksession =
        JPAKnowledgeService.newStatefulKnowledgeSession(kbase, null, env);
    int id = ksession.getId();

    ProcessInstance processInstance = ksession.startProcess("com.sample.SuperProcess");
    logger.debug("Started process instance {}", processInstance.getId());

    TestWorkItemHandler handler = TestWorkItemHandler.getInstance();
    WorkItem workItem = handler.getWorkItem();
    assertNotNull(workItem);

    ksession = JPAKnowledgeService.loadStatefulKnowledgeSession(id, kbase, null, env);
    processInstance = ksession.getProcessInstance(processInstance.getId());
    assertNotNull(processInstance);

    ksession = JPAKnowledgeService.loadStatefulKnowledgeSession(id, kbase, null, env);
    ksession.getWorkItemManager().completeWorkItem(workItem.getId(), null);

    workItem = handler.getWorkItem();
    assertNotNull(workItem);

    ksession = JPAKnowledgeService.loadStatefulKnowledgeSession(id, kbase, null, env);
    processInstance = ksession.getProcessInstance(processInstance.getId());
    assertNotNull(processInstance);

    ksession = JPAKnowledgeService.loadStatefulKnowledgeSession(id, kbase, null, env);
    ksession.getWorkItemManager().completeWorkItem(workItem.getId(), null);

    workItem = handler.getWorkItem();
    assertNull(workItem);

    ksession = JPAKnowledgeService.loadStatefulKnowledgeSession(id, kbase, null, env);
    processInstance = ksession.getProcessInstance(processInstance.getId());
    assertNull("Process did not complete.", processInstance);
  }
  @Test
  public void testUserTransactions() throws Exception {
    KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
    kbuilder.add(ResourceFactory.newByteArrayResource(ruleString.getBytes()), ResourceType.DRL);

    KieBaseConfiguration kBaseConf = KnowledgeBaseFactory.newKnowledgeBaseConfiguration();
    //        ((RuleBaseConfiguration)kBaseConf).setPhreakEnabled(false);

    KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase(kBaseConf);

    if (kbuilder.hasErrors()) {
      fail(kbuilder.getErrors().toString());
    }

    kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());

    UserTransaction ut = (UserTransaction) new InitialContext().lookup("java:comp/UserTransaction");
    ut.begin();
    StatefulKnowledgeSession ksession =
        JPAKnowledgeService.newStatefulKnowledgeSession(kbase, null, env);
    ut.commit();

    List<?> list = new ArrayList<Object>();

    // insert and commit
    ut = (UserTransaction) new InitialContext().lookup("java:comp/UserTransaction");
    ut.begin();
    ksession.setGlobal("list", list);
    ksession.insert(1);
    ksession.insert(2);
    ut.commit();

    // insert and rollback
    ut = (UserTransaction) new InitialContext().lookup("java:comp/UserTransaction");
    ut.begin();
    ksession.insert(3);
    ut.rollback();

    // check we rolled back the state changes from the 3rd insert
    ut = (UserTransaction) new InitialContext().lookup("java:comp/UserTransaction");
    ut.begin();
    ksession.fireAllRules();
    ut.commit();
    assertEquals(2, list.size());

    // insert and commit
    ut = (UserTransaction) new InitialContext().lookup("java:comp/UserTransaction");
    ut.begin();
    ksession.insert(3);
    ksession.insert(4);
    ut.commit();

    // rollback again, this is testing that we can do consecutive rollbacks and commits without
    // issue
    ut = (UserTransaction) new InitialContext().lookup("java:comp/UserTransaction");
    ut.begin();
    ksession.insert(5);
    ksession.insert(6);
    ut.rollback();

    ksession.fireAllRules();

    assertEquals(4, list.size());

    // now load the ksession
    ksession = JPAKnowledgeService.loadStatefulKnowledgeSession(ksession.getId(), kbase, null, env);

    ut = (UserTransaction) new InitialContext().lookup("java:comp/UserTransaction");
    ut.begin();
    ksession.insert(7);
    ksession.insert(8);
    ut.commit();

    ksession.fireAllRules();

    assertEquals(6, list.size());
  }