Program: 144343
Project: 144343
Buggy source:
public String deleteItem(){
  OrderItems orderItemEntity=orderService.findOrderItemByOrderItemId(orderItemIdParam);
  orderService.deleteItem(orderItemEntity);
  Orders orderEntityForm=orderService.findOrdersById(orderItemEntity.getOrderId());
  order=transformToOrderFormBean(orderEntityForm);
  Map sessionAttributes=ActionContext.getContext().getSession();
  customerItems=(List)sessionAttributes.get("String_Node_Str");
  List<OrderItems> orderItemEntityList=orderService.findAllItemByOrderId(orderItemEntity.getOrderId());
  for (  OrderItems orderItemElem : orderItemEntityList) {
    orderItems.add(transformToOrderItemsFormBean(orderItemElem));
  }
  if (orderItemEntityList.size() == 0) {
    orderEntityForm.setOrderStatus("String_Node_Str");
    orderService.updateOrder(orderEntityForm);
  }
  clearErrorsAndMessages();
  addActionMessage("String_Node_Str");
  sessionAttributes.put("String_Node_Str",orderEntityForm.getOrderId());
  return SUCCESS;
}

Fixed version (ground truth):
public String deleteItem(){
  Map sessionAttributes=ActionContext.getContext().getSession();
  OrderItems orderItemEntity=orderService.findOrderItemByOrderItemId(orderItemIdParam);
  List<OrderStatusLogs> statusLogsEntity=orderStatusLogsService.findAllShipmentLogs(orderItemIdParam);
  for (  OrderStatusLogs statusLogsElem : statusLogsEntity) {
    if (statusLogsElem.getStatus().equals("String_Node_Str") || statusLogsElem.getStatus().equals("String_Node_Str")) {
      Orders orderEntityForm=orderService.findOrdersById(orderItemEntity.getOrderId());
      order=transformToOrderFormBean(orderEntityForm);
      Integer contactIdParam=orderEntityForm.getShipperContactId();
      Contacts contactEntity=customerService.findContactById(contactIdParam);
      Customer customerEntity=customerService.findCustomerById(contactEntity.getReferenceId());
      customerItems=customerService.findItemByCustomerId(customerEntity.getCustomerId());
      List<OrderItems> orderItemEntityList=orderService.findAllItemByOrderId((Integer)sessionAttributes.get("String_Node_Str"));
      for (      OrderItems orderItemElem : orderItemEntityList) {
        orderItems.add(transformToOrderItemsFormBean(orderItemElem));
      }
      sessionAttributes.put("String_Node_Str",customerItems);
      clearErrorsAndMessages();
      addActionError("String_Node_Str");
      return "String_Node_Str";
    }
  }
  orderService.deleteItem(orderItemEntity);
  Orders orderEntityForm=orderService.findOrdersById(orderItemEntity.getOrderId());
  order=transformToOrderFormBean(orderEntityForm);
  customerItems=(List)sessionAttributes.get("String_Node_Str");
  List<OrderItems> orderItemEntityList=orderService.findAllItemByOrderId(orderItemEntity.getOrderId());
  for (  OrderItems orderItemElem : orderItemEntityList) {
    orderItems.add(transformToOrderItemsFormBean(orderItemElem));
  }
  if (orderItemEntityList.size() == 0) {
    orderEntityForm.setOrderStatus("String_Node_Str");
    orderService.updateOrder(orderEntityForm);
  }
  clearErrorsAndMessages();
  addActionMessage("String_Node_Str");
  sessionAttributes.put("String_Node_Str",orderEntityForm.getOrderId());
  return SUCCESS;
}