Hibernate get List from database

Question

In the following code I am trying to get a List of Products which contains all the products in the database:

public List getAllProducts() throws          


        

Answer 1

For example you have code:

Session session = getSessionFactory().openSession();
Transaction transaction = null;
try {
SQLQuery sqlQuery = session.createSQLQuery("SELECT * FROM schema.yourtable WHERE param = :param");
            sqlQuery.setString("param", "someParam");

And if your next step will be:

List list = sqlQuery.list();

You will receive list with Rows. You can see your Entity.class parameters in debug, but cat cast to List with your Entities:

List list = (List) sqlQuery.list();

In this point will be ClassCastException!

And if you need received List with your Entities you must add entity type to sql query:

List list = (List)sqlQuery.addEntity(Entity.class).list();

That's all. I hope someone will help.