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:de.iai.ilcd.model.dao.SourceDao.java

private boolean saveDigitalFiles(Source source, PrintWriter out) {
    EntityManager em = PersistenceUtil.getEntityManager();

    File directory = null;//  w  w  w.  jav a 2s.co m
    EntityTransaction t = em.getTransaction();
    try {

        // OK, now let's handle the files if any
        if ((source.getFiles().size() > 0) && (source.getId() > 0)) { // we have files and the source has a valid
            // id
            // first let's check if the source has already a file directory to save binary files
            String directoryPath = source.getFilesDirectory();
            directory = new File(directoryPath);

            if (!directory.exists()) {
                directory.mkdirs(); // OK, create the directory and all parents
            } // OK, now that we verified that we have a directory, let's copy the files to the directory
            for (DigitalFile digitalFile : source.getFiles()) {
                String sourcePath = digitalFile.getFileName();
                logger.info("have to save digital file {}", sourcePath);
                File file = new File(sourcePath);
                if (file.canRead()) {
                    // copy file only if we have a real file and not only a URL
                    File dest = new File(directory, file.getName());
                    if (!file.copyTo(dest)) {
                        if (out != null) {
                            out.println("cannot copy file " + file.getName() + " of source data set "
                                    + source.getName().getDefaultValue() + " to database file firectory");
                        }
                        logger.error("cannot copy digital file {} to source directory {}", file.getName(),
                                directoryPath);
                    }
                    // now, replace name in digitalFile with just the name of the file
                    digitalFile.setFileName(FilenameUtils.getName(sourcePath));
                } else {
                    if (!file.getName().startsWith("http:") || !file.getName().startsWith("https:")) {
                        // there are sometimes URL refs in source which don't have http:// prepended
                        if (!file.getName().matches(".+\\....") && file.getName().contains(".")) {
                            // looks like a URL with no http:// in front; try to fix that
                            digitalFile.setFileName("http://" + file.getName());
                        } else {
                            // we have a file which we cannot find
                            digitalFile.setFileName(FilenameUtils.getName(sourcePath));
                            out.println("warning: digital file " + FilenameUtils.getName(sourcePath)
                                    + " of source data set " + source.getName().getDefaultValue()
                                    + " cannot be found in external_docs directory");
                            logger.warn(
                                    "warning: digital file {} of source data set {} cannot be found in external_docs directory; will be ignored",
                                    file.getName(), source.getName().getDefaultValue());
                        }
                    }
                }
                t.begin();
                em.persist(digitalFile);
                t.commit();
            }
        }
    } catch (Exception e) {
        // OK, let's delete the digital files and rollback the whole transaction to remove database items
        logger.error("cannot save digital file", e);
        if (t.isActive()) {
            t.rollback();
        }
        this.deleteDigitalFiles(source);
        return false;
    }
    return true;
}

From source file:BO.UserHandler.java

public boolean respondFriendRequest(VUser user) {
    EntityManager em;

    EntityManagerFactory emf;/*  ww  w. ja  v a  2  s .  c o  m*/
    emf = Persistence.createEntityManagerFactory(PERSISTENCE_NAME);
    em = emf.createEntityManager();

    try {
        em.getTransaction().begin();
        System.out.println("Receiving friend: " + user.getEmail());
        System.out.println("Sending friend: " + user.getFriendToAdd());

        Friendship f = (Friendship) em
                .createQuery("SELECT f from Friendship f WHERE f.receivingFriend.email LIKE :email1 "
                        + "AND f.sendingFriend.email LIKE :email2")
                .setParameter("email1", user.getEmail()).setParameter("email2", user.getFriendToAdd())
                .getSingleResult();
        f.setDidRespond(true);
        f.setDidAccept(user.isDidAccept());
        em.persist(f);
        em.flush();
        em.getTransaction().commit();
        return true;
    } catch (Exception e) {
        System.out.println(e);
        return false;
    } finally {
        if (em != null) {
            em.close();
        }
        emf.close();
    }
}

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

/**
 * Before test.//from   w w w  .  ja  v  a  2  s  . c  om
 *
 * @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.userdirectory.jpa.JpaUserAndRoleProvider.java

@PUT
@Path("{username}.json")
@RestQuery(name = "roleupdate", description = "Updates a user's roles", returnDescription = "No content", restParameters = @RestParameter(name = "roles", type = TEXT, isRequired = true, description = "The user roles as a json array"), pathParameters = @RestParameter(name = "username", type = STRING, isRequired = true, description = "The username"), reponses = {
        @RestResponse(responseCode = SC_NO_CONTENT, description = "The user roles have been updated.") })
public Response updateUserFromJson(@PathParam("username") String username, @FormParam("roles") String roles) {
    JSONArray rolesArray = (JSONArray) JSONValue.parse(roles);
    EntityManager em = null;
    EntityTransaction tx = null;//  w  w w . j a  va 2  s.  com
    try {
        em = emf.createEntityManager();
        tx = em.getTransaction();
        tx.begin();
        // Find the existing user
        Query q = em.createNamedQuery("user");
        q.setParameter("u", username);
        q.setParameter("o", securityService.getOrganization().getId());
        JpaUser jpaUser = null;
        try {
            jpaUser = (JpaUser) q.getSingleResult();
            jpaUser.roles.clear();
            for (Object role : rolesArray) {
                jpaUser.roles.add((String) role);
            }
            em.merge(jpaUser);
        } catch (NoResultException e) {
            return null; // this will be translated into a 404
        }
        tx.commit();
        return Response.noContent().build();
    } finally {
        if (tx.isActive()) {
            tx.rollback();
        }
        if (em != null)
            em.close();
    }
}

From source file:in.bookmylab.jpa.JpaDAO.java

public User saveUser(User user, boolean savePassword) {
    EntityManager em = emf.createEntityManager();
    try {//from w  ww .  jav a 2 s  . c o  m
        user.password = Utils.hashPassword(user.password);
        em.getTransaction().begin();
        if (user.userId == null) {
            grantDefaultRoleToUser(em, user);
            em.persist(user);
        } else {
            user = em.merge(user);
            if (savePassword) {
                Query q = em.createNamedQuery("User.setPassword");
                q.setParameter("password", user.password);
                q.setParameter("userId", user.userId);
                q.executeUpdate();
            }
        }
        em.getTransaction().commit();
    } finally {
        em.clear();
        em.close();
    }
    return user;
}

From source file:com.gigglinggnus.controllers.ManageExamsController.java

/**
 *
 * @param request servlet request//from  www  . ja v  a2  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");

    String examId = request.getParameter("examid");
    String status = request.getParameter("status");
    Clock clk = (Clock) (request.getSession().getAttribute("clock"));
    User user = (User) (request.getSession().getAttribute("user"));

    Exam exam = em.find(Exam.class, examId);

    try {
        em.getTransaction().begin();
    } catch (Exception e) {
    }

    try {
        if (status.equals("approved")) {
            user.changeExamStatus(exam, ExamStatus.APPROVED);
            em.persist(exam);
            em.getTransaction().commit();
            request.setAttribute("msg", "Exam APPROVED");
        } else if (status.equals("denied")) {
            user.changeExamStatus(exam, ExamStatus.DENIED);
            em.persist(exam);
            em.getTransaction().commit();
            request.setAttribute("msg", "Exam Denied");
        } else {
            request.setAttribute("msg", "Invalid status");
        }
    } catch (Exception e) {
        em.getTransaction().rollback();
        request.setAttribute("msg", e.toString());
        throw e;
    }

    RequestDispatcher rd = request.getRequestDispatcher("/home.jsp");
    rd.forward(request, response);
}

From source file:BO.UserHandler.java

public boolean addFriend(VUser u) {
    EntityManager em;
    EntityManagerFactory emf;/*  w w  w  .j a va 2s  .co m*/
    emf = Persistence.createEntityManagerFactory(PERSISTENCE_NAME);
    em = emf.createEntityManager();

    try {
        em.getTransaction().begin();
        System.out.println(u.getEmail());
        System.out.println(u.getFriendToAdd());

        try {
            List<Friendship> f = (List<Friendship>) em
                    .createQuery("SELECT f from Friendship f WHERE f.receivingFriend.email LIKE :email1 "
                            + "AND f.sendingFriend.email LIKE :email2")
                    .setParameter("email1", u.getEmail()).setParameter("email2", u.getFriendToAdd())
                    .getResultList();
            if (!f.isEmpty()) {
                return false;
            }
        } catch (Exception e) {

        }

        try {

            List<Friendship> f = (List<Friendship>) em
                    .createQuery("SELECT f from Friendship f WHERE f.sendingFriend.email LIKE :email1 "
                            + "AND f.receivingFriend.email LIKE :email2")
                    .setParameter("email1", u.getEmail()).setParameter("email2", u.getFriendToAdd())
                    .getResultList();
            if (!f.isEmpty()) {
                return false;
            }
        } catch (Exception e) {

        }

        User sender = getUserByEmail(u.getEmail());
        User receiver = getUserByEmail(u.getFriendToAdd());

        Friendship friendship = new Friendship(sender, receiver);
        em.persist(friendship);
        em.flush();
        em.getTransaction().commit();
        return true;
    } catch (Exception e) {
        return false;
    } finally {
        if (em != null) {
            em.close();
        }
        emf.close();
    }
}

From source file:BO.UserHandler.java

public int sendChallengeRequest(VUser user) {
    EntityManager em;

    EntityManagerFactory emf;//from  w  w w  .  j  av  a2s  .com
    emf = Persistence.createEntityManagerFactory(PERSISTENCE_NAME);
    em = emf.createEntityManager();

    try {
        em.getTransaction().begin();
        System.out.println("Challenged by: " + user.getEmail());
        System.out.println("Challenged friend: " + user.getFriendToAdd());

        User friend = getUserByEmail(user.getFriendToAdd());

        GameServerCommunicator gameComm = new GameServerCommunicator();
        ArrayList<String> playerNames = new ArrayList<>();
        playerNames.add(user.getEmail());
        playerNames.add(user.getFriendToAdd());
        int gameId = gameComm.requestNewGame(playerNames);
        if (gameId == -1) {
            //if something went wrong
            return -1;
        }

        //Send cloud message to friend
        JSONObject notificationObj = new JSONObject();
        notificationObj.put("body", "CHALLENGE " + user.getEmail() + " " + GameInfo.getInstance().getIp() + " "
                + GameInfo.getInstance().getClientPort() + " " + gameId);
        notificationObj.put("title", "A Challenge");

        JSONObject messageObj = new JSONObject();
        messageObj.put("token", friend.getDeviceToken());
        messageObj.put("notification", notificationObj);

        JSONObject mainObject = new JSONObject();
        mainObject.put("message", messageObj);

        HttpPost url = getHttpURL();
        url.setEntity(new StringEntity(mainObject.toString()));

        HttpClient client = new DefaultHttpClient();
        HttpResponse response = client.execute(url);
        System.out.println("Response:");
        HttpEntity entity = response.getEntity();
        String responseString = EntityUtils.toString(entity, "UTF-8");
        System.out.println(responseString);
        em.flush();
        em.getTransaction().commit();
        return gameId;
    } catch (Exception e) {
        System.out.println(e);
        return -1;
    } finally {
        if (em != null) {
            em.close();
        }
        emf.close();
    }
}

From source file:com.enioka.jqm.tools.JqmEngine.java

@Override
public void pause() {
    EntityManager em = Helpers.getNewEm();
    em.getTransaction().begin();
    em.createQuery("UPDATE Node n SET n.enabled = false WHERE n.id = :id").setParameter("id", node.getId())
            .executeUpdate();/*from   ww w  .  ja  v  a  2s  . c o  m*/
    em.getTransaction().commit();
    em.close();
    refreshConfiguration();
}

From source file:com.enioka.jqm.tools.JqmEngine.java

@Override
public void resume() {
    EntityManager em = Helpers.getNewEm();
    em.getTransaction().begin();
    em.createQuery("UPDATE Node n SET n.enabled = true WHERE n.id = :id").setParameter("id", node.getId())
            .executeUpdate();//  www . j  a  v  a 2s  .  c  o m
    em.getTransaction().commit();
    em.close();
    refreshConfiguration();
}