Example usage for javax.persistence EntityTransaction begin

Introduction

In this page you can find the example usage for javax.persistence EntityTransaction begin.

Prototype

public void begin();

Source Link

Document

Start a resource transaction.

Usage

From source file:org.apache.juddi.replication.ReplicationNotifier.java

@Deprecated
private Node getNode(String messageSender) {
    EntityManager em = PersistenceManager.getEntityManager();
    EntityTransaction tx = null;
    try {/*from www. j av a  2  s  .  c  o m*/
        tx = em.getTransaction();
        tx.begin();
        Node api = new Node();
        org.apache.juddi.model.Node find = em.find(org.apache.juddi.model.Node.class, messageSender);
        if (find != null) {
            MappingModelToApi.mapNode(find, api);
        }
        tx.commit();
        return api;
    } catch (Exception ex) {
        log.error("error", ex);
        if (tx != null && tx.isActive()) {
            tx.rollback();
        }
    } finally {
        em.close();
    }
    return null;
}

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From source file:de.iai.ilcd.model.dao.SourceDao.java

/**
 * Concrete implementation required for saving of digital files
 *//*  www  . ja v a 2 s  .c o m*/
@Override
public boolean checkAndPersist(Source source, PersistType pType, PrintWriter out) {
    EntityManager em = PersistenceUtil.getEntityManager();

    Source existingSource = this.getByUuid(source.getUuid().getUuid());
    if (existingSource != null) {
        if (pType == PersistType.ONLYNEW) {
            out.println(
                    "Warning: source data set with this uuid already exists in database; will ignore this data set");
            return false;
        }
    }

    EntityTransaction t = em.getTransaction();
    try {
        t.begin();
        if (existingSource != null && (pType == PersistType.MERGE)) {
            // delete first the existing one, we will use the new one
            if (out != null) {
                out.println(
                        "Notice: source data set with this uuid already exists in database; will merge this data set");
            }
            em.remove(existingSource);
            this.deleteDigitalFiles(source);
        }

        em.persist(source);

        t.commit();

        if (!super.setMostRecentVersionFlags(source.getUuidAsString())) {
            return false;
        }

        if (source != null && source.getId() != null) {
            if (!this.saveDigitalFiles(source, out)) {
                if (out != null) {
                    out.println(
                            "Warning: couldn't save all files of this source data set into database file directory: see messages above");
                }
            }
        }
        return true;

    } catch (Exception e) {
        if (out != null) {
            out.println("Can't save source data file to database because of: " + e.getMessage());
        }
        t.rollback();
        return false;
    }
}

---

From source file:org.apache.juddi.replication.ReplicationNotifier.java

/**
 * Note: this is for locally originated changes only, see null null null         {@link org.apache.juddi.api.impl.UDDIReplicationImpl.PullTimerTask#PersistChangeRecord PersistChangeRecord
 * } for how remote changes are processed
 *
 * @param j must be one of the UDDI save APIs
 *
 *///from   ww  w  . j a  v  a2  s .  c  om
protected void ProcessChangeRecord(org.apache.juddi.model.ChangeRecord j) {
    //store and convert the changes to database model

    //TODO need a switch to send the notification without persisting the record
    //this is to support multihop notifications
    EntityManager em = PersistenceManager.getEntityManager();
    EntityTransaction tx = null;
    try {
        tx = em.getTransaction();
        tx.begin();
        j.setIsAppliedLocally(true);
        em.persist(j);
        j.setOriginatingUSN(j.getId());
        em.merge(j);
        log.info("CR saved locally, it was from " + j.getNodeID() + " USN:" + j.getOriginatingUSN() + " Type:"
                + j.getRecordType().name() + " Key:" + j.getEntityKey() + " Local id:" + j.getId());
        tx.commit();
    } catch (Exception ex) {
        log.fatal("unable to store local change record locally!!", ex);
        if (tx != null && tx.isActive()) {
            tx.rollback();
        }
        JAXB.marshal(MappingModelToApi.mapChangeRecord(j), System.out);
    } finally {
        em.close();
    }

    log.debug("ChangeRecord: " + j.getId() + "," + j.getEntityKey() + "," + j.getNodeID() + ","
            + j.getOriginatingUSN() + "," + j.getRecordType().toString());
    SendNotifications(j.getId(), j.getNodeID(), false);

}

---

From source file:org.eclipse.smila.recordstorage.impl.RecordStorageImpl.java

/**
 * {@inheritDoc}//from  w  w w.j a  va  2s.c  o m
 */
@Override
public void removeRecord(final String id) throws RecordStorageException {
    if (id == null) {
        throw new RecordStorageException("parameter id is null");
    }
    _lock.readLock().lock();
    try {
        final EntityManager em = createEntityManager();
        try {
            final RecordDao dao = findRecordDao(em, id);
            if (dao != null) {
                final EntityTransaction transaction = em.getTransaction();
                try {
                    transaction.begin();
                    em.remove(dao);
                    transaction.commit();
                } catch (final Exception e) {
                    if (transaction.isActive()) {
                        transaction.rollback();
                    }
                    throw new RecordStorageException(e, "error removing record id: " + id);
                }
            } else {
                if (_log.isDebugEnabled()) {
                    _log.debug("could not remove record id: " + id + ". no record with this id exists.");
                }
            }
        } finally {
            closeEntityManager(em);
        }
    } finally {
        _lock.readLock().unlock();
    }
}

---

From source file:org.eclipse.smila.binarystorage.persistence.jpa.JPABinaryPersistence.java

/**
 * Stores the given BinaryStorageDao, updating an existing one or creating a new one.
 *
 * @param dao//from  w w w.ja  v a 2s.c o  m
 *          the BinaryStorageDao to store
 * @throws BinaryStorageException
 *           if any error occurs
 */
// TODO: don't know if this synchronize is good, was needed to pass the JUNit test TestConcurrentBSSAccessJPA
private synchronized void store(final BinaryStorageDao dao) throws BinaryStorageException {
    _lock.readLock().lock();
    try {
        final EntityManager em = createEntityManager();
        final EntityTransaction transaction = em.getTransaction();
        try {
            transaction.begin();
            if (findBinaryStorageDao(em, dao.getId()) == null) {
                em.persist(dao);
            } else {
                em.merge(dao);
            }
            transaction.commit();
            if (_log.isTraceEnabled()) {
                _log.trace("stored content of id:" + dao.getId());
            }
        } catch (final Exception e) {
            if (transaction.isActive()) {
                transaction.rollback();
            }
            throw new BinaryStorageException(e, "error storing record id: " + dao.getId());
        } finally {
            closeEntityManager(em);
        }
    } finally {
        _lock.readLock().unlock();
    }
}

---

From source file:com.espirit.moddev.examples.uxbridge.newsdrilldown.test.CommandITCase.java

public void printMetaCats() throws Exception {
    System.out.println("\n\n\n");
    EntityManager em = emf.createEntityManager();
    try {/*from  w  w w  .  ja  v a2 s  .c om*/
        EntityTransaction et = em.getTransaction();
        et.begin();
        Query query = em.createQuery(new StringBuilder().append("SELECT x FROM metaCategory x").toString());
        List<NewsMetaCategory> metaList = query.getResultList();
        for (NewsMetaCategory temp : metaList) {
            System.out.println("META: " + temp.getName() + " / " + temp.getLastmodified());
        }
        et.commit();
    } finally {
        em.close();
    }
    System.out.println("\n\n\n");

}

---

From source file:com.espirit.moddev.examples.uxbridge.newsdrilldown.test.CommandITCase.java

/**
 * Before test.//  w  w  w. j  av a 2  s.c  o  m
 *
 * @throws Exception the exception
 */
@Before
public void beforeTest() throws Exception {
    EntityManager em = emf.createEntityManager();
    try {
        EntityTransaction et = em.getTransaction();
        et.begin();
        Query query = em.createQuery(new StringBuilder().append("SELECT x FROM news x").toString());
        List<News> newsList = query.getResultList();
        for (News news : newsList) {
            em.remove(news);
        }

        query = em.createQuery(new StringBuilder().append("SELECT x FROM category x").toString());
        List<NewsCategory> catList = query.getResultList();
        for (NewsCategory temp : catList) {
            em.remove(temp);
        }

        query = em.createQuery(new StringBuilder().append("SELECT x FROM metaCategory x").toString());
        List<NewsMetaCategory> metaList = query.getResultList();
        for (NewsMetaCategory temp : metaList) {
            em.remove(temp);
        }
        et.commit();
    } finally {
        em.close();
    }

}

---

From source file:org.opencastproject.comments.events.persistence.EventCommentDatabaseServiceImpl.java

@Override
public void deleteComment(String eventId, long commentId)
        throws NotFoundException, EventCommentDatabaseException {
    EntityManager em = emf.createEntityManager();
    EntityTransaction tx = em.getTransaction();
    try {/*from w  ww  . ja  v a 2 s.c o m*/
        tx.begin();
        EventCommentDto event = getEventComment(eventId, commentId, em);
        if (event == null)
            throw new NotFoundException(
                    "Event comment with ID " + eventId + " and " + commentId + " does not exist");

        em.remove(event);
        tx.commit();
        sendMessageUpdate(eventId);
    } catch (NotFoundException e) {
        throw e;
    } catch (Exception e) {
        logger.error("Could not delete event comment: {}", ExceptionUtils.getStackTrace(e));
        if (tx.isActive())
            tx.rollback();

        throw new EventCommentDatabaseException(e);
    } finally {
        if (em != null)
            em.close();
    }
}

---

From source file:org.sigmah.server.schedule.export.AutoDeleteJob.java

public void execute(JobExecutionContext executionContext) throws JobExecutionException {
    final JobDataMap dataMap = executionContext.getJobDetail().getJobDataMap();
    final EntityManager em = (EntityManager) dataMap.get("em");
    final Log log = (Log) dataMap.get("log");
    final Injector injector = (Injector) dataMap.get("injector");
    EntityTransaction tx = null;

    try {/*from   w w  w  .  j  a v a2  s. c om*/

        // Open transaction
        /*
         *  NOTE: it is impossible to use @Transactional for this method
         *  The reason is link{TransactionalInterceptor} gets EntityManager 
         *  from the injector; this is server thread, so, EM is out of scope 
         */
        tx = em.getTransaction();
        tx.begin();

        final GlobalExportDAO exportDAO = new GlobalExportHibernateDAO(em);

        final List<GlobalExportSettings> settings = exportDAO.getGlobalExportSettings();
        for (final GlobalExportSettings setting : settings) {

            /*
             * Check for auto delete schedule 
             */

            //skip if no delete schedule is specified
            if (setting.getAutoDeleteFrequency() == null || setting.getAutoDeleteFrequency() < 1)
                continue;

            final Calendar scheduledCalendar = Calendar.getInstance();
            // subtract months from current date 
            scheduledCalendar.add(Calendar.MONTH, 0 - setting.getAutoDeleteFrequency().intValue());

            // get older exports
            List<GlobalExport> exports = exportDAO.getOlderExports(scheduledCalendar.getTime(),
                    setting.getOrganization());
            //delete exports and their contents
            for (final GlobalExport export : exports) {
                final List<GlobalExportContent> contents = export.getContents();
                for (GlobalExportContent content : contents) {
                    em.remove(content);
                }
                em.remove(export);
            }

        }
        tx.commit();

        log.info("Scheduled DELETE of global exports fired");

    } catch (Exception ex) {
        if (tx != null && tx.isActive())
            tx.rollback();
        log.error("Scheduled global export job failed : " + ex.getMessage());
        ex.printStackTrace();
    }
}

---

From source file:org.opencastproject.comments.events.persistence.EventCommentDatabaseServiceImpl.java

@Override
public Comment updateComment(String eventId, Comment comment) throws EventCommentDatabaseException {
    EntityManager em = emf.createEntityManager();
    EntityTransaction tx = em.getTransaction();
    try {/*from   w  ww .jav a  2  s .c  o  m*/
        tx.begin();
        CommentDto updatedComment = CommentDatabaseUtils.mergeComment(comment, em);

        EventCommentDto dto = getEventComment(eventId, updatedComment.getId(), em);
        if (dto == null) {
            dto = new EventCommentDto(eventId, updatedComment, securityService.getOrganization().getId());
            em.persist(dto);
        } else {
            dto.setComment(updatedComment);
            em.merge(dto);
        }
        tx.commit();
        comment = updatedComment.toComment(userDirectoryService);
        sendMessageUpdate(eventId);
        return comment;
    } catch (Exception e) {
        logger.error("Could not update or store comment: {}", ExceptionUtils.getStackTrace(e));
        if (tx.isActive())
            tx.rollback();

        throw new EventCommentDatabaseException(e);
    } finally {
        if (em != null)
            em.close();
    }
}

---

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