将hibernate 3迁移到hibernate 5. getHibernateTemplate（）和HibernateCallback的替代方式

Question

以下代码是由hibernate 3开发的。我想将其迁移到hibernate 5. getHibernateTemplate（）和HibernateCallback显示错误如何修复此错误。

public List<Employee> getAllSalaryPersons () {
    List<Employee> empSalList= super.getHibernateTemplate().execute(new HibernateCallback<List<Employee>>(){
        public List<Employee> doInHibernate(Session session) throws HibernateException  {

            Criteria criteria  = session.createCriteria(Salary.class, "sclass")
                    .createAlias("salary", "salary")
                    .add(Restrictions.le("sclass.salary", 25000))
                    .add(Restrictions.gt("sclass.salary", 99000))
                    .setProjection(
                            Projections.projectionList().addOrder( Order.asc("sclass.experiance") );

            criteria.setResultTransformer( new AliasToBeanResultTransformer(Employee.class));

            return criteria.list();
        }
    });
    return empSalList;
}

Answer 1

我会完全避免HibernateTemplate（其包名称随每个主要的Hibernate版本而变化）而是使用SessionFactory。

这样，当您最终升级到Hibernate 6或7时，您不必再次更改代码......

@Autowired
private SessionFactory sessionFactory;

public List<Employee> getAllSalaryPersons () {
    Criteria criteria  = sessionFactory.getCurrentSession().createCriteria(Salary.class, "sclass")
            .createAlias("salary", "salary")
            .add(Restrictions.le("sclass.salary", 25000))
            .add(Restrictions.gt("sclass.salary", 99000))
            .setProjection(Projections.projectionList())
            .addOrder(Order.asc("sclass.experiance")) ;
    criteria.setResultTransformer( new AliasToBeanResultTransformer(Employee.class));
    return criteria.list();        
}