如何在 hibernate 中编写查询

Question

I have one table, User , and in that table, I have 3 columns:

• id
• name
• email

I want to retrieve a name for a particular email by passing the email id; how would I write that hibernate query?

Answer 1

Using a criteria query:

Criteria criteria = getSession().createCriteria(User.class);
criteria = criteria.add(Restrictions.eq("email", email));
List<User> results = (List<User>) criteria.list();

Using hql:

String hql = "from User where email = :email";
Query query = getSession().createQuery(hql);
query.setParameter("email", email);
List<User> results = (List<User>) query.list();