java/nekurak.net-ejb/src/java/cz/frantovo/nekurak/dao/PodnikDAO.java
author František Kučera <franta-hg@frantovo.cz>
Fri, 26 Feb 2010 23:45:43 +0100
changeset 48 86bd44cebe8f
parent 40 67d332d48562
child 49 9b2a597cc862
permissions -rw-r--r--
Odstraněno zapomenuté rozhraní EJB.
     1 package cz.frantovo.nekurak.dao;
     2 
     3 import cz.frantovo.nekurak.dto.Podnik;
     4 import java.util.Collection;
     5 import javax.ejb.LocalBean;
     6 import javax.ejb.Stateless;
     7 import javax.persistence.EntityManager;
     8 import javax.persistence.PersistenceContext;
     9 import javax.persistence.Query;
    10 
    11 /**
    12  *
    13  * @author fiki
    14  */
    15 @Stateless
    16 @LocalBean
    17 public class PodnikDAO {
    18 
    19     private static final String PU = "nekurak.net-PU";
    20     @PersistenceContext(unitName = PU)
    21     private EntityManager em;
    22 
    23     public Collection<Podnik> getPodniky() {
    24 	Query dotaz = em.createQuery("FROM " + t(Podnik.class) + " o ORDER BY datum DESC");
    25 	return dotaz.getResultList();
    26     }
    27 
    28     public void uloz(Podnik p) {
    29 	em.persist(p);
    30     }
    31 
    32     private static String t(Class trida) {
    33 	return trida.getSimpleName();
    34     }
    35 }