I'm new to Hibernate.
I'm trying to get a list of first name and last name of all administrators.
There are two warnings in my following code. I already tried to search a lot online.
1) Query is a raw type. References to generic type Query should be parameterized.
2) The method list() from the type Query is deprecated.
public List<Object> loadAllAdmins() {
List<Object> allAdmins = new ArrayList<Object>();
try {
HibernateUtil.beginTransaction();
Query q = currentSession.createQuery("SELECT admin.firstName, admin.lastName from AdminBean admin");
allAdmins= q.list();
HibernateUtil.commitTransaction();
} catch (HibernateException ex) {
System.out.println("List<AdminBean> loadAllPersons: HibernateException");
}
return allAdmins;
}
But I see sample code like this all over the web. How should I solve these two problems?
Update
I just tried to use Criteria as suggested. It also says the list() method is deprecate for Criteria... It seems that a lot of methods are deprecate for both Query and Criteria, including uniqueResult() and others... Any suggestion how I should replace them?
public List<Admin> getAdmins() {
List<Admin> AdminList = new ArrayList<Admin>();
Session session = factory.openSession();
for (Object oneObject : session.createQuery("FROM Admin").getResultList()) {
AdminList.add((Admin)oneObject);
}
session.close();
return AdminList;
}
The warnings came from "Type Inference".
I had the similar problem. However, I found a solution without "SuppressWarnings".
Recently, I found out a shorter way to code the same things without type inference.
public List<Admin> getAdmins() {
Session session = factory.openSession();
TypedQuery<Admin> query = session.createQuery("FROM Admin");
List<Admin> result = query.getResultList();
session.close();
return result;
}
Hope it helps.