protected void changeObject() {
   UnitOfWork uow = (UnitOfWork) getSession();
   Employee cloneEmployee = (Employee) workingCopy;
   for (int i = 0; i < managedEmployeesToAdd.size(); i++) {
     Employee cloneEmployeeToAdd = (Employee) uow.registerObject(managedEmployeesToAdd.get(i));
     cloneEmployee.addManagedEmployee(cloneEmployeeToAdd);
   }
   for (int i = 0; i < managedEmployeesToRemove.size(); i++) {
     Employee cloneEmployeeToRemove =
         (Employee) uow.registerObject(managedEmployeesToRemove.get(i));
     cloneEmployee.removeManagedEmployee(cloneEmployeeToRemove);
   }
   for (int i = 0; i < phonesToRemove.size(); i++) {
     PhoneNumber clonePhoneToRemove = (PhoneNumber) uow.registerObject(phonesToRemove.get(i));
     cloneEmployee.removePhoneNumber(clonePhoneToRemove);
   }
   for (int i = 0; i < phonesToAdd.size(); i++) {
     PhoneNumber clonePhoneToAdd = (PhoneNumber) uow.registerObject(phonesToAdd.get(i));
     cloneEmployee.addPhoneNumber(clonePhoneToAdd);
   }
 }
    public void test() {
      // setup
      Employee manager = new Employee();
      manager.setFirstName("Manager");
      Employee employee = new Employee();
      employee.setFirstName("Employee");

      UnitOfWork uow = getSession().acquireUnitOfWork();
      uow.registerObject(manager);
      uow.registerObject(employee);
      uow.commit();

      Vector pk = new Vector(1);
      pk.add(manager.getId());

      version[0] =
          ((Long)
                  getSession()
                      .getDescriptor(Employee.class)
                      .getOptimisticLockingPolicy()
                      .getWriteLockValue(manager, pk, getAbstractSession()))
              .longValue();

      // test1 - add managed employee, manager's version should increment.
      uow = getSession().acquireUnitOfWork();
      Employee managerClone = (Employee) uow.registerObject(manager);
      Employee employeeClone = (Employee) uow.registerObject(employee);
      managerClone.addManagedEmployee(employeeClone);
      uow.commit();
      version[1] =
          ((Long)
                  getSession()
                      .getDescriptor(Employee.class)
                      .getOptimisticLockingPolicy()
                      .getWriteLockValue(manager, pk, getAbstractSession()))
              .longValue();

      // test2 - alter managed employee, manager's version should NOT increment.
      uow = getSession().acquireUnitOfWork();
      employeeClone = (Employee) uow.registerObject(employee);
      employeeClone.setFirstName("Altered");
      uow.commit();
      version[2] =
          ((Long)
                  getSession()
                      .getDescriptor(Employee.class)
                      .getOptimisticLockingPolicy()
                      .getWriteLockValue(manager, pk, getAbstractSession()))
              .longValue();

      // test3- remove managed employee, manager's version should increment.
      uow = getSession().acquireUnitOfWork();
      managerClone = (Employee) uow.registerObject(manager);
      employeeClone = (Employee) uow.registerObject(employee);
      managerClone.removeManagedEmployee(employeeClone);
      uow.commit();
      version[3] =
          ((Long)
                  getSession()
                      .getDescriptor(Employee.class)
                      .getOptimisticLockingPolicy()
                      .getWriteLockValue(manager, pk, getAbstractSession()))
              .longValue();

      PhoneNumber phone = new PhoneNumber("home", "613", "1111111");

      // test4 - add phone, manager's version should increment.
      uow = getSession().acquireUnitOfWork();
      managerClone = (Employee) uow.registerObject(manager);
      PhoneNumber phoneClone = (PhoneNumber) uow.registerObject(phone);
      managerClone.addPhoneNumber(phoneClone);
      uow.commit();
      version[4] =
          ((Long)
                  getSession()
                      .getDescriptor(Employee.class)
                      .getOptimisticLockingPolicy()
                      .getWriteLockValue(manager, pk, getAbstractSession()))
              .longValue();

      // test5- alter phone, manager's version should increment.
      uow = getSession().acquireUnitOfWork();
      phoneClone = (PhoneNumber) uow.registerObject(phone);
      phoneClone.setType("work");
      uow.commit();
      version[5] =
          ((Long)
                  getSession()
                      .getDescriptor(Employee.class)
                      .getOptimisticLockingPolicy()
                      .getWriteLockValue(manager, pk, getAbstractSession()))
              .longValue();

      // test6- remove phone, manager's version should increment.
      uow = getSession().acquireUnitOfWork();
      managerClone = (Employee) uow.registerObject(manager);
      phoneClone = (PhoneNumber) uow.registerObject(phone);
      managerClone.removePhoneNumber(phoneClone);
      uow.commit();
      version[6] =
          ((Long)
                  getSession()
                      .getDescriptor(Employee.class)
                      .getOptimisticLockingPolicy()
                      .getWriteLockValue(manager, pk, getAbstractSession()))
              .longValue();
    }