Example usage for javax.persistence EntityManager getTransaction

Introduction

In this page you can find the example usage for javax.persistence EntityManager getTransaction.

Prototype

public EntityTransaction getTransaction();

Source Link

Document

Return the resource-level EntityTransaction object.

Usage

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();
    em.persist(pc);/*  www.java  2  s  .c  o  m*/
    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:com.sun.socialsite.business.impl.JPAPersistenceStrategy.java

/**
 * Release database session, rolls back any uncommitted changes.
 *///from   w w  w.  j  a va 2s .  c o  m
public void release() {
    EntityManager em = getEntityManager(false);
    if (isTransactionActive(em)) {
        em.getTransaction().rollback();
    }
    em.close();
    setThreadLocalEntityManager(null);
}

From source file:com.sun.socialsite.business.impl.JPAPersistenceStrategy.java

/**
 * Return true if a transaction is active on the current EntityManager.
 * @param em the persistence manager/*  w  w w. j a v a  2 s .c  o  m*/
 * @return true if the persistence manager is not null and has an active
 *         transaction
 */
private boolean isTransactionActive(EntityManager em) {
    if (em == null) {
        return false;
    }
    return em.getTransaction().isActive();
}

From source file:cz.fi.muni.pa165.dto.BookDAOTest.java

@Test
public void testDelete() {
    EntityManager em = emf.createEntityManager();
    BookDAOImpl bdao = new BookDAOImpl();
    bdao.setManager(em);/*from w  ww  .  j  a v a2s. c  o  m*/
    Book b = new Book();
    b.setIdBook(1);
    em.getTransaction().begin();
    b = bdao.find(b);
    bdao.delete(b);
    em.getTransaction().commit();

    List<Book> books = em.createQuery("SELECT b FROM Book b", Book.class).getResultList();
    em.close();
    assertEquals(books.size(), 0);
}

From source file:com.edsoft.teknosaproject.bean.ReportBean.java

@Override
public void documentListener() {
    Menus menus;/* w w  w  . j  av  a2  s  .  com*/
    documentMenu.clear();
    path = Paths.get(DIR, "AnaDepo", family, type, brand);
    //path = Paths.get("D:", "Teknosa", family, type, brand);
    fileList = path.toFile().listFiles();
    EntityManager em = Persistence.createEntityManagerFactory("teknosa").createEntityManager();
    em.getTransaction().begin();
    Query query = em.createNamedQuery("Menus.findByValued");
    documentMenu.add(new SelectItem("", "Seiniz"));
    for (File file : fileList) {
        if (file.isDirectory()) {
            query.setParameter("valued", file.getName());
            menus = (Menus) query.getResultList().get(0);
            menus.setLabel(menus.getLabel1());
            menus.setValue(menus.getValued());
            documentMenu.add(menus);
        }
    }
    em.getTransaction().commit();
    em.close();
}

From source file:fr.xebia.demo.wicket.blog.service.GenericService.java

public void save(T entity) throws ServiceException {
    try {/*from  w  ww.ja  v a2 s .  c o m*/
        EntityManager entityManager = currentEntityManager();
        entityManager.getTransaction().begin();

        entityManager.persist(entity);

        commitTransaction();
    } catch (PersistenceException e) {
        logger.error(e.getCause(), e);
        rollbackTransaction();
        throw new ServiceException("Can't update object", e);
    } finally {
        closeEntityManager();
    }
}

From source file:com.edsoft.teknosaproject.bean.ReportBean.java

@Override
public void brandListener() {
    Menus menus;/*from  ww  w .j a va 2s .c  o  m*/
    brandMenu.clear();
    documentMenu.clear();
    path = Paths.get(DIR, "AnaDepo", family, type);
    //path = Paths.get("D:", "Teknosa", family, type);
    fileList = path.toFile().listFiles();
    EntityManager em = Persistence.createEntityManagerFactory("teknosa").createEntityManager();
    em.getTransaction().begin();
    Query query = em.createNamedQuery("Menus.findByValued");
    brandMenu.add(new SelectItem("", "Seiniz"));
    for (File file : fileList) {
        if (file.isDirectory()) {
            query.setParameter("valued", file.getName());
            menus = (Menus) query.getResultList().get(0);
            menus.setLabel(menus.getLabel1());
            menus.setValue(menus.getValued());
            brandMenu.add(menus);
        }
    }
    em.getTransaction().commit();
    em.close();
}

From source file:fr.xebia.demo.wicket.blog.service.GenericService.java

public T update(T entity) throws ServiceException {
    try {/*from w  ww  .  ja v a 2 s . c o  m*/
        EntityManager entityManager = currentEntityManager();
        entityManager.getTransaction().begin();
        T loadedObject = entityManager.find(getObjectClass(), getObjectId(entity));
        T mergedEntity = merge(loadedObject, entity);
        T updatedEntity = entityManager.merge(mergedEntity);
        commitTransaction();
        return updatedEntity;
    } catch (PersistenceException e) {
        logger.error(e.getCause(), e);
        rollbackTransaction();
        throw new ServiceException("Can't update object", e);
    } finally {
        closeEntityManager();
    }
}

From source file:eu.optimis.trustedinstance.DBStorage.java

@SuppressWarnings("finally")
public boolean delete(String resourceKey) throws Exception {

    boolean result = true;
    EntityManager em = emf.createEntityManager();

    try {/*from  w w w . jav a  2 s . c om*/
        String jpql = "delete from DBStorageEntry se where se.key=\"" + resourceKey + "\"";
        em.getTransaction().begin();
        Query query = em.createQuery(jpql);
        int row = query.executeUpdate();
        em.getTransaction().commit();
        if (row == 0) {
            result = false;
        }
    } catch (Exception e) {
        result = false;
        throw e;
    } finally {
        em.close();
        return result;
    }
}

From source file:fr.xebia.demo.wicket.blog.service.GenericService.java

public void deleteById(Serializable id) throws ServiceException {
    try {/*from   w  w w.j  ava2 s. c om*/
        EntityManager entityManager = currentEntityManager();
        entityManager.getTransaction().begin();
        Object loadedEntity = entityManager.find(getObjectClass(), id);
        if (loadedEntity == null) {
            throw new ServiceException("Entity referenced by id " + id + " does not exist");
        }
        entityManager.remove(loadedEntity);
        commitTransaction();
    } catch (PersistenceException e) {
        logger.error(e.getCause(), e);
        rollbackTransaction();
        throw new ServiceException("Can't delete object", e);
    } finally {
        closeEntityManager();
    }
}