Yes, Dao Saves is properly. I just found that the Key will be generated on
EntityManager.flush()
I modified the code, and now it works fine.
public void testPkGeneration() {
Profile p1 = new Profile();
p1.setAge(20);
p1.setDob(new Date());
EntityManager em = EMF.get().createEntityManager();
EntityTransaction tx = em.getTransaction();
dao.setEntityManager(em);
tx.begin();
dao.save(p1);
em.flush();
tx.commit();
List<Profile> profiles = dao.getAll();
assertNotNull(profiles.get(0));
assertNotNull(p1.getId());
}
On Wed, Apr 21, 2010 at 1:25 AM, Ikai L (Google) <[email protected]> wrote:
> Are you sure that the entity is being saved?
>
> Can you post your ProfileDAO?
>
> On Mon, Apr 19, 2010 at 9:52 AM, Sudhir Ramanandi <[email protected]>wrote:
>
>> I have just started with GAE+JPA. However I find it difficult to grasp the
>> primary key things.
>> I have created a very simple entity and a test to verify that the primary
>> key is generated automatically.
>>
>> Entity
>>
>> import java.util.Date;
>>
>> import javax.persistence.Basic;
>> import javax.persistence.Entity;
>> import javax.persistence.GeneratedValue;
>> import javax.persistence.GenerationType;
>> import javax.persistence.Id;
>> import javax.persistence.Temporal;
>> import javax.persistence.TemporalType;
>>
>> import com.google.appengine.api.datastore.Key;
>> import com.szczytowski.genericdao.api.IEntity;
>>
>> @Entity
>> public class Profile implements IEntity<Key> {
>>
>> @Id
>> @GeneratedValue(strategy=GenerationType.IDENTITY)
>> private Key _id;
>>
>> @Basic
>> private int _age;
>>
>> @Basic
>> @Temporal(TemporalType.DATE)
>> private Date _dob;
>>
>> public Profile() {
>> }
>>
>> public Key getId() {
>> return _id;
>> }
>>
>> public void setId(Key id) {
>> _id = id;
>> }
>>
>> public int getAge() {
>> return _age;
>> }
>>
>> public void setAge(int age) {
>> _age = age;
>> }
>>
>> public Date getDob() {
>> return _dob;
>> }
>>
>> public void setDob(Date dob) {
>> _dob = dob;
>> }
>> }
>>
>>
>> Test Class
>>
>> import java.util.Date;
>>
>> import junit.framework.TestCase;
>>
>> import org.junit.After;
>> import org.junit.Before;
>> import org.junit.Test;
>> import org.ramanandi.matri.infrastructure.jpa.EMF;
>>
>> import
>> com.google.appengine.tools.development.testing.LocalDatastoreServiceTestConfig;
>> import
>> com.google.appengine.tools.development.testing.LocalServiceTestHelper;
>>
>> public class ProfileDaoTest extends TestCase {
>>
>> private final LocalServiceTestHelper helper = new
>> LocalServiceTestHelper(new LocalDatastoreServiceTestConfig());
>> private ProfileDao dao = new ProfileDao();
>>
>>
>> @Before
>> public void setUp() {
>> helper.setUp();
>> }
>>
>> @After
>> public void tearDown() {
>> helper.tearDown();
>> }
>> private void doTest() {
>> dao.setEntityManager(EMF.get().createEntityManager());
>> Profile p = new Profile();
>> p.setAge(20);
>> p.setDob(new Date());
>> dao.save(p);
>> assertNotNull(p.getId());
>>
>>
>> }
>>
>> @Test
>> public void testInsert1() {
>> doTest();
>> }
>>
>> }
>>
>> But assertNotNull(p.getId()); fails. Why the primary key is not
>> generated automatically? What's wrong.
>>
>> Thanks
>> SN
>>
>> --
>> You received this message because you are subscribed to the Google Groups
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>> To post to this group, send email to
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>> .
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>> http://groups.google.com/group/google-appengine-java?hl=en.
>>
>
>
>
> --
> Ikai Lan
> Developer Relations, Google App Engine
> Twitter: http://twitter.com/ikai
> Delicious: http://delicious.com/ikailan
>
> ----------------
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