Jean-Baptiste BRIAUD -- Novlog wrote:
>
> Did you try GenerationType.IDENTITY ?
> @GeneratedValue(strategy = GenerationType.IDENTITY)
>
> I think it should work with int but I prefer long instead.
>
GenerationType.IDENTITY appears to make no difference. However, suprisingly
(to me anyway)
@Test
public void getPlatformById() {
Platform platform = (Platform) em.find(Platform.class, 8);
assertNotNull(platform);
}
works and returns the correct platform entity although platform.getId()
still returns 0.
@Test
public void getPlatformByQueryById() {
String jpql = "Select c from Platform c where c.id = '8'";
Platform platform = (Platform)
em.createQuery(jpql).getSingleResult();
assertNotNull(platform);
}
This fails with a no instance found exception from OpenJPA
Regards
On Sep 8, 2009, at 10:56 , B.L. Zeebub wrote:
>
> Hi
>
> I have attached my entity definition below. This was created over a
> pre-existing database. I create the EntityManagerFactory to obtain the
> entitymanager (em) as normal and execute the code;
>
> String jpql = "select c from Platform c";
> em.getTransaction().begin();
> entities = (List) em.createQuery(jpql).getResultList();
> em.getTransaction().commit();
>
> I get the list of Platform entities as expected. Looping through the
> list,
> getPlatformName() returns the text as expected, but getId() always
> returns 0
> (zero) for all members of the list. Any ideas as to what I've missed.
>
> Regards
>
> @Entity
> @Table(name="Platform")
> public class Platform implements Serializable {
> private static final long serialVersionUID = 1L;
>
> @Id
> @GeneratedValue(strategy=GenerationType.AUTO)
> @Column(name="id", unique=true, nullable=false)
> private int id;
>
> @Column(name="PlatformName", length=32)
> private String platformName;
>
> //bi-directional many-to-one association to PEcu
> @OneToMany(mappedBy="platform")
> private Set<PEcu> pecus;
>
> public Platform() {
> }
>
> public int getId() {
> //TODO: Remove
> System.out.println("Platform.getId() called - " + this.id);
> return this.id;
> }
>
> public void setId(int id) {
> this.id = id;
> }
>
> public String getPlatformName() {
> //TODO: Remove
> System.out.println("Platform.getPlatform() called - " +
> this.platformName);
> return this.platformName;
> }
>
> public void setPlatformName(String platformName) {
> this.platformName = platformName;
> }
>
> public Set<PEcu> getPecus() {
> return this.pecus;
> }
>
> public void setPecus(Set<PEcu> pecus) {
> this.pecus = pecus;
> }
>
> }
> --
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> Sent from the OpenJPA Users mailing list archive at Nabble.com.
>
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