How to get all data in the table with hibernate?

Question

public Service getServiceData(){
    return (Service)ServiceDaoImpl.getSession().get(Service.class, new Integer(1));
}

The get method is getting one. I want to get all data for the jsp page.

Answer 1

Since List<Entity> list = session.createCriteria(Entity.class).list(); was deprecated,

You can use CriteriaBuilder().

        try ( Session session = sessionFactory.openSession()) {
            // Create CriteriaBuilder
            CriteriaBuilder builder = session.getCriteriaBuilder();

            // Create CriteriaQuery
            CriteriaQuery<Entity> criteria = builder.createQuery(Entity.class);

            // Specify criteria root
            criteria.from(Entity.class);

            // Execute query
            List<Entity> entityList = session.createQuery(criteria).getResultList();

            for (Entity e : entityList) {
             // load the data
            }
        }

Click here for the github example.

Answer 2

Try as following to get all rows from table

@SuppressWarnings("unchecked")
    public List<Service> Service getServiceData() {

         return ServiceDaoImpl.getSession().createQuery("from Service").list(); 
    }

Answer 3

With the Hibernate 5 the createCriteria is deprecated use something like this

private static <T> List<T> loadAllData(Class<T> type, Session session) {
    CriteriaBuilder builder = session.getCriteriaBuilder();
    CriteriaQuery<T> criteria = builder.createQuery(type);
    criteria.from(type);
    List<T> data = session.createQuery(criteria).getResultList();
    return data;
  }

usage

Session session = HibernateUtils.getSession();
List<User> users = loadAllData(User.class, session);

Answer 4

Try below piece of code and replace Entity with your Entity class

@SuppressWarnings("unchecked")      
public List<Entity> getAlldata(){       
    try
    {
        return sessionFactory.getCurrentSession().createCriteria(Entity.class).list();
    } catch (Exception e) {
        return new ArrayList<>();
    }
}

Answer 5

public List<Service> getServiceAll(){
     return ServiceDaoImpl.getSession().createCriteria(Service.class).list();
}

Answer 6

Configuration cfg = new Configuration(); cfg.configure("hibernate.cfg.xml");

    SessionFactory factory = cfg.buildSessionFactory();
    Session session = factory.openSession();

    /* Selecting all objects(records) start_______________________ */



    Query qry = session.createQuery("from Product p");

    List l =qry.list();
    System.out.println("Total Number Of Records : "+l.size());
    Iterator it = l.iterator();

    while(it.hasNext())
    {
        Object o = (Object)it.next();
        Product p = (Product)o;
        System.out.println("Product id : "+p.getProductId());
        System.out.println("Product Name : "+p.getProName());
        System.out.println("Product Price : "+p.getPrice());
        System.out.println("----------------------");
    }       

    session.close();
    factory.close();