Example usage for javax.persistence EntityManagerFactory createEntityManager

Introduction

In this page you can find the example usage for javax.persistence EntityManagerFactory createEntityManager.

Prototype

public EntityManager createEntityManager();

Source Link

Document

Create a new application-managed EntityManager.

Usage

From source file:facades.PersonFacadeDB.java

@Override
public String getPerson(Integer id) throws NotFoundException {
    String result = "";
    //get person with this id from DB
    EntityManagerFactory emf = Persistence.createEntityManagerFactory(persistenceFileName);
    EntityManager em = emf.createEntityManager();
    EntityTransaction transaction = em.getTransaction();
    transaction.begin();/*from   w w  w  .  j  av a2 s.com*/
    try {
        Person p = em.find(Person.class, id);

        result = om.writeValueAsString(p);
        //            Query query = em.createNamedQuery("Person.findById").setParameter("id", id);
        //            List<Person> people = query.getResultList();

        //result = gson.toJson(people.get(0));
        //result = om.writeValueAsString(people.get(0));
    } catch (Exception e) {
        throw new NotFoundException("No person exists for the given id");
    } finally {
        em.close();
    }
    return result;
}

---

From source file:facades.PersonFacadeDB.java

@Override
public String getPersons() {

    String result = "";
    EntityManagerFactory emf = Persistence.createEntityManagerFactory(persistenceFileName);
    EntityManager em = emf.createEntityManager();
    EntityTransaction transaction = em.getTransaction();
    transaction.begin();/*  ww  w .  j a v  a2 s. c om*/

    try {
        Query query = em.createNamedQuery("Person.findAll");
        List<Person> people = query.getResultList();

        try {
            result = om.writeValueAsString(people);
        } catch (JsonProcessingException ex) {
            Logger.getLogger(PersonFacadeDB.class.getName()).log(Level.SEVERE, null, ex);
        }

    } finally {
        em.close();
    }
    return result;
}

---

From source file:ro.allevo.fintpws.model.UserEntity.java

@Override
public Collection<? extends GrantedAuthority> getAuthorities() {

    EntityManagerFactory configEntityManagerFactory = Persistence.createEntityManagerFactory("fintpCFG");
    EntityManager emc = configEntityManagerFactory.createEntityManager();

    TypedQuery<RoleEntity> query = emc.createNamedQuery("RoleEntity.findUserAuthorities", RoleEntity.class);
    List<RoleEntity> authorities = query.setParameter("userid", userid).getResultList();
    return authorities;
}

---

From source file:net.sf.ehcache.openjpa.datacache.TestEhCache.java

@Test
public void testPersist() {
    EntityManagerFactory emf = em.getEntityManagerFactory();

    EntityManager em = emf.createEntityManager();
    PObject pc = new PObject("XYZ");
    em.getTransaction().begin();// w w w  .j a va 2s  .  co  m
    em.persist(pc);
    em.getTransaction().commit();
    Object oid = pc.getId();

    em.clear();
    // After clean the instance must not be in L1 cache
    assertFalse(em.contains(pc));
    // But it must be found in L2 cache by its OpenJPA identifier
    assertTrue(getCache(pc.getClass()).contains(getOpenJPAId(pc, oid)));

    PObject pc2 = em.find(PObject.class, oid);
    // After find(), the original instance is not in the L1 cache
    assertFalse(em.contains(pc));
    // After find(), the found instance is in the L1 cache
    assertTrue(em.contains(pc2));
    // The L2 cache must still hold the key   
    assertTrue(getCache(pc.getClass()).contains(getOpenJPAId(pc, oid)));
}

---

From source file:test.unit.be.fedict.eid.applet.beta.PersistenceTest.java

@Before
public void setUp() throws Exception {
    Class.forName("org.hsqldb.jdbcDriver");
    Ejb3Configuration configuration = new Ejb3Configuration();
    configuration.setProperty("hibernate.dialect", "org.hibernate.dialect.HSQLDialect");
    configuration.setProperty("hibernate.connection.driver_class", "org.hsqldb.jdbcDriver");
    configuration.setProperty("hibernate.connection.url", "jdbc:hsqldb:mem:beta");
    configuration.setProperty("hibernate.hbm2ddl.auto", "create");
    configuration.addAnnotatedClass(SessionContextEntity.class);
    configuration.addAnnotatedClass(FeedbackEntity.class);
    configuration.addAnnotatedClass(TestResultEntity.class);
    configuration.addAnnotatedClass(TestReportEntity.class);
    configuration.addAnnotatedClass(AdministratorEntity.class);
    EntityManagerFactory entityManagerFactory = configuration.buildEntityManagerFactory();

    this.entityManager = entityManagerFactory.createEntityManager();
    this.entityManager.getTransaction().begin();
}

---

From source file:org.eclipse.jubula.client.core.persistence.Persistor.java

/**
 * Installs the DB scheme used by Jubula.
 * /*w  ww . jav  a2  s  . co m*/
 * @param entityManagerFactory
 *            The factory to use to create the entity manager in which the
 *            installation will occur.
 * 
 * @return <code>true</code> if the installation was successful. Otherwise,
 *         <code>false</code>.
 * @throws PMDatabaseConfException
 *             if the scheme couldn't be installed
 * @throws JBException
 *             in case of configuration problems
 */
private static boolean installDbScheme(EntityManagerFactory entityManagerFactory)
        throws PMDatabaseConfException, JBException {

    EntityManager em = null;
    try {
        em = entityManagerFactory.createEntityManager();
        SchemaManager schemaManager = new SchemaManager(em.unwrap(ServerSession.class));
        schemaManager.replaceDefaultTables();

        createOrUpdateDBVersion(em);
        createOrUpdateDBGuard(em);
        return true;
    } catch (PersistenceException e) {
        Throwable rootCause = ExceptionUtils.getRootCause(e);
        if (rootCause instanceof SQLException) {
            if (("08001").equals(((SQLException) rootCause).getSQLState())) { //$NON-NLS-1$
                log.error(Messages.TheDBAllreadyUseAnotherProcess, e);
                throw new JBException(rootCause.getMessage(), MessageIDs.E_DB_IN_USE);
            }
            log.error(Messages.NoOrWrongUsernameOrPassword, e);
            throw new JBException(e.getMessage(), MessageIDs.E_NO_DB_CONNECTION);
        }
        final String msg = Messages.ProblemInstallingDBScheme + StringConstants.DOT;
        log.error(msg);
        throw new PMDatabaseConfException(msg, MessageIDs.E_NO_DB_SCHEME);
    } finally {
        if (em != null) {
            try {
                em.close();
            } catch (Throwable e) {
                // ignore
            }
        }
    }
}

---

From source file:proyectodavid.Negocio.Pregunta.SA.SAPreguntaImp.java

public SAPreguntaImp() {

    EntityManagerFactory entityManagerFactory = Persistence.createEntityManagerFactory("ProyectoDavidPU");

    this.entityManager = entityManagerFactory.createEntityManager();

}

---

From source file:edu.harvard.i2b2.fhirserver.ejb.AccessTokenBean.java

@PostConstruct
public void init() {
    try {//  www . jav  a  2  s .  c  o m
        EntityManagerFactory factory = Persistence.createEntityManagerFactory("testPer");
        em = factory.createEntityManager();
        Random r = new Random();
        // createAccessToken("clientId232" + r.nextInt());
        // deleteAllAccessTokens();
        if (Config.openAccessToken != null) {
            createIfNotExistsDemoAccessToken();
        }
    } catch (Exception ex) {

        logger.error("", ex);
    }
}

---

From source file:facades.PersonFacadeDB.java

@Override
public RoleSchool addRole(String json, Integer id) throws NotFoundException {
    Person p = gson.fromJson(getPerson(id), Person.class);
    HashMap<String, String> map = new Gson().fromJson(json, new TypeToken<HashMap<String, String>>() {
    }.getType());//from  www . ja  va 2 s.co m

    String roleName = map.get("roleName");
    RoleSchool role;

    switch (roleName) {
    case "Teacher Assistant":
        //Create role
        RoleSchool ta = new TeacherAssistant();
        ta.setPerson(p);
        role = ta;
        break;
    case "Teacher":

        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");

        String dateInString = map.get("date");
        Date date = new Date();

        try {
            date = formatter.parse(dateInString);
        } catch (ParseException e) {
            e.printStackTrace(System.out);
        }

        RoleSchool t = new Teacher(date, map.get("degree"));
        t.setPerson(p);
        role = t;
        break;
    case "Student":
        RoleSchool s = new Student(map.get("semester"));
        s.setPerson(p);
        role = s;
        break;
    default:
        throw new IllegalArgumentException("no such role");
    }
    //save this info
    EntityManagerFactory emf = Persistence.createEntityManagerFactory(persistenceFileName);
    EntityManager em = emf.createEntityManager();
    EntityTransaction transaction = em.getTransaction();
    transaction.begin();

    try {
        em.persist(role);
        transaction.commit();
        em.getEntityManagerFactory().getCache().evictAll();
    } catch (Exception e) {
        throw new NotFoundException("Couldnt add role");
    } finally {
        em.close();
    }

    return role;

}

---

From source file:com.ge.apm.service.data.DataService.java

public Object postDirectData(String tablename, List<Map> list) {
    if (tablename == null)
        return "{\"code\":\"1\",\"msg\":\"please input table_name\"}";
    if (list == null || list.isEmpty())
        return "{\"code\":\"1\",\"msg\":\"no data post\"}";
    String tableName = tablename.toLowerCase();
    String talbeClassName = "com.ge.apm.domain." + tabelNameToClassName(tableName);
    Class<?> table = getDao(talbeClassName);
    Map<String, String> fields = getFields(table);

    EntityManagerFactory emf = WebUtil.getBean(EntityManagerFactory.class);
    EntityManager em = emf.createEntityManager();
    int fortimes = list.size() / 50 + 1;//
    for (int j = 0; j < fortimes; j++) {
        List<Map> subList = list.subList(j * 50, (j + 1) * 50 < list.size() ? (j + 1) * 50 : list.size());

        em.getTransaction().begin();/*from  ww  w .  j  av  a 2 s . co  m*/
        Query query = null;
        for (int i = 0; i < subList.size(); i++) {
            Map<String, Object> map = subList.get(i);
            String outColumnStr = "insert into " + tableName + " (";
            String outValueStr = ") values(";
            String[] strs = insertColumn(fields, map);
            outColumnStr += strs[0];
            outValueStr += strs[1];
            String sql = outColumnStr + outValueStr + ")";
            query = em.createNativeQuery(sql);
            query.executeUpdate();
        }
        try {
            em.getTransaction().commit();
        } catch (Exception ex) {
            em.getTransaction().rollback();
            Logger.getLogger(DataGetAndPushController.class.getName()).log(Level.SEVERE, null, ex);
            em.close();
            return "{\"code\":\"1\",\"msg\":\"save failed\"}";//
        }
    }
    if (em != null) {
        em.close();
    }
    return "{\"code\":\"0\",\"msg\":\"save success\"}";//?
}

---

• «
• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• 9
• 10
• 11
• 12
• 13
• 14
• 15
• 16
• 17
• 18
• 19
• 20
• 21
• 22
• »