Example usage for javax.persistence EntityManager getTransaction

List of usage examples for javax.persistence EntityManager getTransaction

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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:com.adeptj.modules.data.jpa.core.AbstractJpaRepository.java

/**
 * {@inheritDoc}/*  w  w w.  j  a  v  a  2s  .c  om*/
 */
@Override
public <T extends BaseEntity> void delete(Class<T> entity, Object primaryKey) {
    EntityManager em = JpaUtil.createEntityManager(this.getEntityManagerFactory());
    try {
        em.getTransaction().begin();
        T entityToDelete = em.find(entity, primaryKey);
        if (entityToDelete == null) {
            LOGGER.warn("Entity couldn't be deleted as it doesn't exists in DB: [{}]", entity);
        } else {
            em.remove(entityToDelete);
            em.getTransaction().commit();
        }
    } catch (Exception ex) { // NOSONAR
        Transactions.markRollback(em);
        throw new JpaException(ex);
    } finally {
        Transactions.rollback(em);
        JpaUtil.closeEntityManager(em);
    }
}

From source file:com.adeptj.modules.data.jpa.core.AbstractJpaRepository.java

@Override
public <T extends BaseEntity> void batchInsert(List<T> entities, int batchSize) {
    Validate.isTrue(entities != null && !entities.isEmpty() && batchSize > 1, "Invalid inputs!!");
    EntityManager em = JpaUtil.createEntityManager(this.getEntityManagerFactory());
    try {/*from  www  .j av a 2 s.c o m*/
        em.getTransaction().begin();
        for (int index = 0; index < entities.size(); index++) {
            if (index > 0 && index % batchSize == 0) {
                em.getTransaction().commit();
                em.getTransaction().begin();
                em.clear();
            }
            em.persist(entities.get(index));
        }
        em.getTransaction().commit();
    } catch (Exception ex) { // NOSONAR
        Transactions.markRollback(em);
        throw new JpaException(ex);
    } finally {
        Transactions.rollback(em);
        JpaUtil.closeEntityManager(em);
    }
}

From source file:com.adeptj.modules.data.jpa.core.AbstractJpaRepository.java

/**
 * {@inheritDoc}//from   w ww .  j  a  v  a 2  s.c  om
 */
@Override
public <T extends BaseEntity> int deleteByCriteria(DeleteCriteria<T> criteria) {
    EntityManager em = JpaUtil.createEntityManager(this.getEntityManagerFactory());
    try {
        em.getTransaction().begin();
        CriteriaBuilder cb = em.getCriteriaBuilder();
        CriteriaDelete<T> cd = cb.createCriteriaDelete(criteria.getEntity());
        Root<T> root = cd.from(criteria.getEntity());
        int rowsDeleted = em
                .createQuery(cd.where(cb.and(Predicates.from(criteria.getCriteriaAttributes(), cb, root))))
                .executeUpdate();
        em.getTransaction().commit();
        LOGGER.debug("deleteByCriteria: No. of rows deleted: [{}]", rowsDeleted);
        return rowsDeleted;
    } catch (Exception ex) { // NOSONAR
        Transactions.markRollback(em);
        throw new JpaException(ex);
    } finally {
        Transactions.rollback(em);
        JpaUtil.closeEntityManager(em);
    }
}

From source file:com.adeptj.modules.data.jpa.core.AbstractJpaRepository.java

/**
 * {@inheritDoc}/*from  w ww  . ja v a 2  s .  c om*/
 */
@Override
public <T extends BaseEntity> int updateByCriteria(UpdateCriteria<T> criteria) {
    EntityManager em = JpaUtil.createEntityManager(this.getEntityManagerFactory());
    try {
        em.getTransaction().begin();
        CriteriaBuilder cb = em.getCriteriaBuilder();
        CriteriaUpdate<T> cu = cb.createCriteriaUpdate(criteria.getEntity());
        criteria.getUpdateAttributes().forEach(cu::set);
        Root<T> root = cu.from(criteria.getEntity());
        int rowsUpdated = em
                .createQuery(cu.where(cb.and(Predicates.from(criteria.getCriteriaAttributes(), cb, root))))
                .executeUpdate();
        em.getTransaction().commit();
        LOGGER.debug("No. of rows updated: {}", rowsUpdated);
        return rowsUpdated;
    } catch (Exception ex) { // NOSONAR
        Transactions.markRollback(em);
        throw new JpaException(ex);
    } finally {
        Transactions.rollback(em);
        JpaUtil.closeEntityManager(em);
    }
}

From source file:com.jada.admin.customAttribute.CustomAttributeGroupMaintAction.java

public ActionForward remove(ActionMapping actionMapping, ActionForm actionForm, HttpServletRequest request,
        HttpServletResponse response) throws Throwable {

    Site site = getAdminBean(request).getSite();
    EntityManager em = JpaConnection.getInstance().getCurrentEntityManager();
    CustomAttributeGroupMaintActionForm form = (CustomAttributeGroupMaintActionForm) actionForm;
    try {//w w w .j  a va2s  .  com
        CustomAttributeGroup customAttributeGroup = CustomAttributeGroupDAO.load(site.getSiteId(),
                Format.getLong(form.getCustomAttribGroupId()));
        em.remove(customAttributeGroup);
        em.getTransaction().commit();
    } catch (Exception e) {
        if (Utility.isConstraintViolation(e)) {
            ActionMessages errors = new ActionMessages();
            errors.add("error", new ActionMessage("error.remove.customAttributeGroup.constraint"));
            saveMessages(request, errors);
            return actionMapping.findForward("error");
        }
        throw e;
    }

    ActionForward actionForward = actionMapping.findForward("removeSuccess");
    return actionForward;
}

From source file:com.sun.socialsite.userapi.UserManagerImpl.java

private UserRole getOrCreateRole(String roleName) throws PersistenceException {
    UserRole role = null;//www.  ja  va 2s .c o  m
    try {
        Query query = getNamedQuery("UserRole.findByRoleName");
        query.setParameter("roleName", roleName);
        role = (UserRole) query.getSingleResult();
    } catch (NoResultException nre) {
        // create the role in database
        EntityManager em2 = null;
        try {
            em2 = getEmf().createEntityManager();
            em2.getTransaction().begin();
            UserRole newRole = new UserRole();
            newRole.setRoleName(roleName);
            em2.persist(newRole);
            em2.flush();
            em2.getTransaction().commit();
        } catch (PersistenceException pe) {
            if (em2 == null) {
                // If we couldn't even create an EntityManager, something is clearly wrong
                throw pe;
            } else {
                // Otherwise, ignore exception for now; the role may have been created in another thread
                if (em2.getTransaction().isActive())
                    em2.getTransaction().rollback();
            }
        } finally {
            if (em2 != null)
                em2.close();
        }
    }

    // If role is null, try again (since it _should_ now exist in the DB).
    if (role == null) {
        Query query = getNamedQuery("UserRole.findByRoleName");
        query.setParameter("roleName", roleName);
        role = (UserRole) query.getSingleResult();
    }

    return role;
}

From source file:info.dolezel.jarss.rest.v1.FeedsService.java

@POST
@Path("{id}/markAllRead")
public Response markAllRead(@Context SecurityContext context, @PathParam("id") int feedId,
        @QueryParam("allBefore") long timeMillis) {
    EntityManager em;
    EntityTransaction tx;/*from   w ww. ja  v a2s  .  c  om*/
    User user;
    Feed feed;
    Date newDate;

    user = (User) context.getUserPrincipal();
    em = HibernateUtil.getEntityManager();
    tx = em.getTransaction();

    tx.begin();

    try {
        feed = em.find(Feed.class, feedId);
        if (feed == null) {
            return Response.status(Response.Status.NOT_FOUND)
                    .entity(new ErrorDescription("Feed does not exist")).build();
        }
        if (!feed.getUser().equals(user)) {
            return Response.status(Response.Status.FORBIDDEN)
                    .entity(new ErrorDescription("Feed not owned by user")).build();
        }

        newDate = new Date(timeMillis);
        if (feed.getReadAllBefore() == null || feed.getReadAllBefore().before(newDate)) {
            feed.setReadAllBefore(newDate);
            em.persist(feed);
        }

        em.createQuery(
                "delete from FeedItem fi where fi.feed = :feed and fi.data.date < :date and not fi.starred and not fi.exported and size(fi.tags) = 0")
                .setParameter("feed", feed).setParameter("date", newDate).executeUpdate();

        tx.commit();

        return Response.noContent().build();
    } finally {
        if (tx.isActive())
            tx.rollback();
        em.close();
    }
}

From source file:com.thruzero.domain.jpa.transaction.JpaDatabaseTransactionMgr.java

protected EntityManager doGetCurrentPersistenceManager(boolean autoCreateTransaction) {
    JpaTransactionState txState = localTransactionState.get();
    EntityManager currentEntityManager = txState.getEntityManager();

    if (autoCreateTransaction && !isTransactionActive()) {
        if (currentEntityManager != null && currentEntityManager.isOpen()) {
            transactionMgrLogHelper.logEntityManagerNotClosedWarning();
            currentEntityManager.close();
        }// www  . j  a v  a2 s .  c  o  m

        // begins a transaction if not currently active
        currentEntityManager = createEntityManager();
        if (!isTransactionActive()) {
            currentEntityManager.getTransaction().begin();
        }

        txState.setEntityManager(currentEntityManager);
    }

    return currentEntityManager;
}

From source file:mil.navy.med.dzreg.dao.RegistriesManagerDAO.java

private boolean unregister(DzRegPK registryKey, Timestamp today) {
    EntityManager em = null;
    PersistentServiceFactory psf = null;

    try {/*from   www  . ja  v  a 2  s  .  co m*/
        psf = PersistentServiceFactory.getInstance(REGISTRY_MANAGER_PU);
        em = psf.getEntityManager();

        em.getTransaction().begin();
        DzReg r = em.find(DzReg.class, registryKey);
        r.setActive(_INACTIVE);
        r.setInsertedDt(today);
        em.getTransaction().commit();

        return true;
    } catch (javax.persistence.NoResultException nre) {
        em.getTransaction().rollback();
        log.error(registryKey + " not found!");
        return false;
    } catch (Exception ex) {
        em.getTransaction().rollback();
        return false;
    } finally {
        em.close();
    }
}

From source file:BO.UserHandler.java

public boolean login(VUser u) {

    EntityManager em;
    EntityManagerFactory emf;//ww  w  .  j  av  a2  s . com
    emf = Persistence.createEntityManagerFactory(PERSISTENCE_NAME);
    em = emf.createEntityManager();

    try {

        Query q = em.createQuery("SELECT u FROM User u WHERE u.email LIKE :email");
        q.setParameter("email", u.getEmail());
        q.setMaxResults(1);
        q.getSingleResult();
        return true;
    } catch (NoResultException e) {
        em.getTransaction().begin();
        User userToInsert = new User(u.getEmail());
        em.persist(userToInsert);
        em.flush();
        em.getTransaction().commit();
        return true;
    } finally {
        if (em != null) {
            em.close();
        }
        emf.close();
    }
}