在hibernate查询执行时，是否将空值赋给基本类型的属性？

Question

i have below code snippet in dao

 String GET_CUSTOMER="SELECT * from customer where custName=:custName"
  Session session = getHibernateUtil().getSession();
  SQLQuery query = session.createSQLQuery(GET_CUSTOMER);

    query.setParameter("custName", custName);
    query.setResultTransformer(Transformers
        .aliasToBean(Customer.class));

    Customer custData = (Customer) query
        .uniqueResult();//line

Customer table has some int columns for which some values as null. Now at line1 i get error Null value was assigned to a property of primitive type setter of Customer.Address

Is there a way in hibernate/query/Transformer to convert the null values to 0 automatically? I have just mentioned one table ie customer but there are various joined table which contains int value as null in various columns so i do not want to handle in query for each table.

UPDATE:- Customer is not Hibernate entity. It pojo with instance fields of int type

Answer 1

Customer table has some int columns for which some values as null.

In that case I'd recommend making them Integer fields instead. While you could probably get Hibernate to coalesce NULL to 0 (although possibly not in an easy global manner), it's not really mapping your data effectively - why would you want to lose information like that?

Answer 2

I don't know about Hibernate transformers, but I have a different idea. Can you change the database? You could make the column not nullable and with default value 0. That way all possible values you can store in the database can be mapped to the int primitive.