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:it.infn.ct.futuregateway.apiserver.v1.TaskService.java

/**
 * Uploads input files. The method store input files for the specified task.
 * Input files are provided as a <i>multipart form data</i> using the field
 * file. This can contains multiple file using the html input attribute
 * <i>multiple="multiple"</i> which allows to associate multiple files with
 * a single field./*from  w  w w.jav a  2  s. co m*/
 *
 * @param id The task id retrieved from the url path
 * @param lstFiles List of file in the POST body
 */
@Path("/input")
@POST
@Consumes({ MediaType.MULTIPART_FORM_DATA })
public final void setInputFile(@PathParam("id") final String id,
        @FormDataParam("file") final List<FormDataBodyPart> lstFiles) {
    if (lstFiles == null || lstFiles.isEmpty()) {
        throw new BadRequestException("Input not accessible!");
    }
    EntityManager em = getEntityManager();
    Task task = em.find(Task.class, id);
    task.addObserver(new TaskObserver(getEntityManagerFactory(), getSubmissionThreadPool()));
    if (task == null) {
        throw new NotFoundException("Task " + id + " does not exist");
    }
    for (FormDataBodyPart fdbp : lstFiles) {
        final String fName = fdbp.getFormDataContentDisposition().getFileName();
        try {
            Storage store = getStorage();
            store.storeFile(Storage.RESOURCE.TASKS, id, fdbp.getValueAs(InputStream.class), fName);
            EntityTransaction et = em.getTransaction();
            try {
                et.begin();
                task.updateInputFileStatus(fName, TaskFile.FILESTATUS.READY);
                et.commit();
            } catch (RuntimeException re) {
                if (et != null && et.isActive()) {
                    et.rollback();
                }
                log.error(re);
                log.error("Impossible to update the task");
                throw new InternalServerErrorException("Errore to update " + "the task");
            } finally {
                em.close();
            }
        } catch (IOException ex) {
            log.error(ex);
            throw new InternalServerErrorException("Errore to store input " + "files");
        }
    }
    em.close();
}

From source file:com.espirit.moddev.examples.uxbridge.newsdrilldown.jpa.NewsHandler.java

/**
 * Deletes a newsdrilldown from the db./*from   w  ww .j a va  2  s. c  o  m*/
 *
 * @param entity The newsdrilldown to delete
 */
public void delete(UXBEntity entity) throws Exception {

    EntityManager em = null;
    EntityTransaction tx = null;
    try {

        em = emf.createEntityManager();
        tx = em.getTransaction();
        tx.begin();

        Query query = em.createQuery(new StringBuilder()
                .append("FROM news x WHERE x.fs_id = :fs_id AND x.language = :language").toString());
        query.setParameter("fs_id", Long.parseLong(entity.getUuid()));
        query.setParameter("language", entity.getLanguage());

        if (!query.getResultList().isEmpty()) {
            News art = (News) query.getSingleResult();
            // delete file from filesystem
            URL url = new URL(art.getUrl());
            File file = new File(webpath + url.getPath());
            if (file.exists()) {
                // Try acquiring the lock without blocking. This method returns
                // null or throws an exception if the file is already locked.
                try {
                    FileChannel channel = new RandomAccessFile(file, "rw").getChannel();
                    // Try to lock the file
                    FileLock lock = channel.tryLock();
                    // Delete the file
                    file.delete();
                    // Release the lock
                    lock.release();
                    lock.channel().close();
                } catch (OverlappingFileLockException e) {
                    logger.info("File is already locked in this thread or virtual machine");
                } catch (MalformedURLException e) {
                    logger.info("wrong url", e);
                }
            }
            // remove article from content repository

            em.remove(art);
        }
        tx.commit();
    } catch (Exception e) {
        if (tx != null) {
            tx.setRollbackOnly();
        }
        throw e;
    } finally {
        if (tx != null && tx.isActive()) {
            if (tx.getRollbackOnly()) {
                tx.rollback();
            }
        }
        if (em != null) {
            em.close();
        }
    }
}

From source file:com.espirit.moddev.examples.uxbridge.newsdrilldown.jpa.NewsHandler.java

/**
 * Deletes every item older than the creationTime of the UXBEntity.
 *
 * @param entity Entity containing the expireDate (= createTime of the entity)
 *///from w  ww.jav  a 2 s .  co m
public void cleanup(UXBEntity entity) throws Exception {

    EntityManager em = null;
    EntityTransaction tx = null;
    try {

        em = emf.createEntityManager();
        tx = em.getTransaction();
        tx.begin();

        // Remove old newsdrilldown
        Query query = em.createQuery(new StringBuilder()
                .append("SELECT x FROM news x WHERE x.lastmodified<:expiredate ").toString());
        query.setParameter("expiredate", entity.getCreateTime());

        if (!query.getResultList().isEmpty()) {
            for (Object obj : query.getResultList()) {
                News art = (News) obj;
                em.remove(art);
            }
        }

        // Remove old newsCategories
        query = em.createQuery(new StringBuilder()
                .append("SELECT x FROM category x WHERE x.lastmodified<:expiredate ").toString());
        query.setParameter("expiredate", entity.getCreateTime());

        if (!query.getResultList().isEmpty()) {
            for (Object obj : query.getResultList()) {
                NewsCategory art = (NewsCategory) obj;
                em.remove(art);
            }
        }

        // Remove old newsMetaCategories
        query = em.createQuery(new StringBuilder()
                .append("SELECT x FROM metaCategory x WHERE x.lastmodified<:expiredate ").toString());
        query.setParameter("expiredate", entity.getCreateTime());

        if (!query.getResultList().isEmpty()) {
            for (Object obj : query.getResultList()) {
                NewsMetaCategory art = (NewsMetaCategory) obj;
                em.remove(art);
            }
        }

        tx.commit();
    } catch (Exception e) {
        if (tx != null && tx.isActive()) {
            tx.setRollbackOnly();
        }
        logger.error("Failure while deleting from the database", e);
        throw e;
    } finally {
        if (tx != null && tx.isActive()) {
            if (tx.getRollbackOnly()) {
                tx.rollback();
            }
        }
        if (em != null) {
            em.close();
        }
    }
}

From source file:nl.b3p.kaartenbalie.service.servlet.CallScriptingServlet.java

/**
 * Processes the incoming request and calls the various methods to create
 * the right output stream.//from  w  ww .j  a va2  s.c o  m
 *
 * @param request servlet request
 * @param response servlet response
 *
 * @throws ServletException
 * @throws IOException
 */
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    long startTime = System.currentTimeMillis();

    DataWrapper data = new DataWrapper(request, response);

    Object identity = null;
    EntityManager em;
    EntityTransaction tx = null;

    try {
        /*
         * Check IP lock
         */
        checkRemoteIP(request);

        identity = MyEMFDatabase.createEntityManager(MyEMFDatabase.MAIN_EM);
        log.debug("Getting entity manager ......");
        em = MyEMFDatabase.getEntityManager(MyEMFDatabase.MAIN_EM);
        tx = em.getTransaction();
        tx.begin();

        DataMonitoring rr = new DataMonitoring();
        data.setRequestReporting(rr);

        String serviceName = OGCConstants.WMS_SERVICE_WMS;

        try {
            OGCScriptingRequest ogcrequest = calcOGCScriptingRequest(request);

            if (!ogcrequest.containsParameter(OGCScriptingRequest.COMMAND)) {
                throw new Exception("Bad request");
            }

            data.setOgcrequest(ogcrequest);

            String serviceParam = ogcrequest.getParameter(OGCConstants.SERVICE);
            if (serviceParam != null || !"".equals(serviceParam)) {
                serviceName = serviceParam;
            }

            String iUrl = ogcrequest.getUrl();
            String pcode = ogcrequest.getPersonalCode();
            rr.startClientRequest(iUrl, iUrl.getBytes().length, startTime, request.getRemoteAddr(),
                    request.getMethod());

            User user = checkLogin(request, em, pcode);

            if (ogcrequest != null) {
                ogcrequest.checkRequestURL();
            }

            rr.setUserAndOrganization(user, user.getMainOrganization());
            data.setHeader("X-Kaartenbalie-User", user.getUsername());

            this.httpRequest = request;

            if (ogcrequest.getParameter(OGCScriptingRequest.COMMAND)
                    .equalsIgnoreCase(OGCScriptingRequest.GET_GROUP_XML)) {
                GroupParser groupParser = new GroupParser();

                groupParser.getGroupsAsXML(response, data.getOutputStream());
            } else {
                parseRequestAndData(data, user);
            }

        } catch (AccessDeniedException adex) {
            log.error("Access denied: " + adex.getLocalizedMessage());
            rr.setClientRequestException(adex);
            response.addHeader("WWW-Authenticate", "Basic realm=\"Kaartenbalie login\"");
            response.sendError(HttpServletResponse.SC_UNAUTHORIZED, "Access denied to Kaartenbalie");
        } catch (Exception ex) {
            log.error("Error while handling request: ", ex);
            rr.setClientRequestException(ex);
            response.sendError(400, "Bad Request. See API documentation");
        } finally {
            rr.endClientRequest(serviceName, data.getOperation(), data.getContentLength(),
                    System.currentTimeMillis() - startTime);
        }
        tx.commit();
    } catch (Exception ex) {
        log.error("Error creating EntityManager: ", ex);
        try {
            tx.rollback();
        } catch (Exception ex2) {
            log.error("Error trying to rollback: ", ex2);
        }
    } finally {
        //log.debug("Closing entity manager .....");
        MyEMFDatabase.closeEntityManager(identity, MyEMFDatabase.MAIN_EM);
    }
}

From source file:com.espirit.moddev.examples.uxbridge.newsdrilldown.jpa.NewsHandler.java

/**
 * saves or updates a newscategory./*  w ww . j  a  v  a2 s  .co  m*/
 *
 * @param category the category
 * @return the category with the new id
 * @throws Exception the exception
 */
private NewsCategory saveNewsCategory(NewsCategory category) throws Exception {

    EntityManager em = null;
    EntityTransaction tx = null;
    try {
        em = emf.createEntityManager();
        tx = em.getTransaction();
        tx.begin();
        // try loading the category for the firstspirit id
        NewsCategory cat = getNewsCategory(category.getFs_id(), category.getLanguage(), em);

        if (cat != null) {

            List<NewsMetaCategory> metaCats = category.getMetaCategories();

            // the already persistent categories
            List<NewsMetaCategory> original_metaCats = cat.getMetaCategories();

            // update existing category
            cat.setMetaCategories(new ArrayList<NewsMetaCategory>());

            for (NewsMetaCategory metaCat : metaCats) {
                metaCat = saveNewsMetaCategory(metaCat, em);
                cat.getMetaCategories().add(metaCat);

                original_metaCats.remove(metaCat);
            }
            for (NewsMetaCategory mc : original_metaCats) {
                mc.setLastmodified(category.getLastmodified());
            }
            cat.getMetaCategories().addAll(original_metaCats);

            cat.setFs_id(category.getFs_id());
            cat.setLanguage(category.getLanguage());
            cat.setName(category.getName());
            cat.setVersion(category.getVersion());
            cat.setLastmodified(category.getLastmodified());

            // update
            category = em.merge(cat);
        } else {
            updateMetaCategories(category, em);
            // save to db
            em.persist(category);
        }

        tx.commit();

        return category;

    } catch (Exception e) {
        if (tx != null && tx.isActive()) {
            tx.setRollbackOnly();
        }
        logger.error("", e);
        throw e;
    } finally {
        if (tx != null && tx.isActive()) {
            if (tx.getRollbackOnly()) {
                tx.rollback();
            }
        }
        if (em != null) {
            em.close();
        }
    }
}

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

/**
 * Concrete implementation required for saving of digital files
 */// ww w. ja v  a  2s .  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:com.gigglinggnus.controllers.ModifyAppointmentController.java

/**
 *
 * @param request servlet request/*from  ww  w  . j ava 2  s.  c o m*/
 * @param response servlet response
 * @throws ServletException if a servlet-specific error occurs
 * @throws IOException if an I/O error occurs
 */
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    EntityManager em = (EntityManager) request.getSession().getAttribute("em");
    Clock clk = (Clock) (request.getSession().getAttribute("clock"));

    boolean modified = false;
    String userId = request.getParameter("userid");
    User user = em.find(User.class, userId);
    String examId = request.getParameter("examid");
    Exam exam = em.find(Exam.class, examId);
    Appointment appt = user.getAppointmentByExam(exam);
    String startTime = request.getParameter("startTime");
    String seatZone = request.getParameter("seatingZone");
    String seatNum = request.getParameter("seatNum");
    String cancel = request.getParameter("cancel");
    try {
        em.getTransaction().begin();
        if (startTime != "") {
            appt.changeStartTime(Instant.parse(startTime), clk);
            em.persist(appt);
            modified = true;
        }
        if (seatZone != "") {
            appt.setSeatingZone(Seating.parse(seatZone));
            em.persist(appt);
            modified = true;
        }
        if (seatNum != "") {
            appt.setSeatNum(Integer.parseInt(seatNum));
            em.persist(appt);
            modified = true;
        }
        em.getTransaction().commit();
    } catch (Exception e) {
        em.getTransaction().rollback();
        request.setAttribute("msg", e);
        RequestDispatcher rd = request.getRequestDispatcher("/home.jsp");
        rd.forward(request, response);
    }
    if (cancel != null) {

        request.setAttribute("msg", "Appointment cancelled");
        RequestDispatcher rd = request.getRequestDispatcher("/home.jsp");
        rd.forward(request, response);
    }
    if (modified == true) {
        request.setAttribute("msg", "Appointment modified");
        RequestDispatcher rd = request.getRequestDispatcher("/home.jsp");
        rd.forward(request, response);
    } else {
        request.setAttribute("msg", "Appointment unchanged");
        RequestDispatcher rd = request.getRequestDispatcher("/home.jsp");
        rd.forward(request, response);
    }
}

From source file:gr.upatras.ece.nam.baker.impl.BakerJpaController.java

public InstalledBun updateInstalledBun(InstalledBun is) {
    EntityManager entityManager = entityManagerFactory.createEntityManager();

    EntityTransaction entityTransaction = entityManager.getTransaction();

    entityTransaction.begin();/* w ww  . j a  v a  2 s .  c  o m*/
    InstalledBun resis = entityManager.merge(is);
    entityTransaction.commit();

    return resis;
}

From source file:gr.upatras.ece.nam.baker.impl.BakerJpaController.java

public void deleteInstalledBun(final InstalledBun message) {
    EntityManager entityManager = entityManagerFactory.createEntityManager();

    EntityTransaction entityTransaction = entityManager.getTransaction();

    entityTransaction.begin();/*from  ww  w.  ja v  a2 s  .  c  om*/

    entityManager.remove(message);

    entityTransaction.commit();
}

From source file:gr.upatras.ece.nam.baker.impl.BakerJpaController.java

public BakerUser updateBakerUser(BakerUser bu) {
    EntityManager entityManager = entityManagerFactory.createEntityManager();

    EntityTransaction entityTransaction = entityManager.getTransaction();

    entityTransaction.begin();/*from ww w.java  2s.  c o  m*/
    BakerUser resis = entityManager.merge(bu);
    entityTransaction.commit();

    return resis;
}