Example usage for javax.persistence EntityManager getTransaction

List of usage examples for javax.persistence EntityManager getTransaction

  1. HOME
  2. Java
  3. javax
  4. javax.persistence.*
  5. EntityManager
  6. 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:org.traccar.web.server.model.DataServiceImpl.java

@Override
public User addUser(User user) {
    User currentUser = getSessionUser();
    if (user.getLogin().isEmpty() || user.getPassword().isEmpty()) {
        throw new IllegalArgumentException();
    }//from  w ww  . j av  a 2 s  .c o m
    if (currentUser.getAdmin()) {
        EntityManager entityManager = getSessionEntityManager();
        synchronized (entityManager) {
            entityManager.getTransaction().begin();
            try {
                entityManager.persist(user);
                entityManager.getTransaction().commit();
                return user;
            } catch (RuntimeException e) {
                entityManager.getTransaction().rollback();
                throw e;
            }
        }
    } else {
        throw new SecurityException();
    }
}

From source file:org.traccar.web.server.model.DataServiceImpl.java

@Override
public User updateUser(User user) {
    User currentUser = getSessionUser();
    if (user.getLogin().isEmpty() || user.getPassword().isEmpty()) {
        throw new IllegalArgumentException();
    }/*from   w  w w .  ja v a  2 s  .c  om*/
    if (currentUser.getAdmin() || (currentUser.getId() == user.getId() && !user.getAdmin())) {
        EntityManager entityManager = getSessionEntityManager();
        synchronized (entityManager) {
            entityManager.getTransaction().begin();
            try {
                // TODO: better solution?
                if (currentUser.getId() == user.getId()) {
                    currentUser.setLogin(user.getLogin());
                    currentUser.setPassword(user.getPassword());
                    currentUser.setUserSettings(user.getUserSettings());
                    currentUser.setAdmin(user.getAdmin());
                    entityManager.merge(currentUser);
                    user = currentUser;
                } else {
                    // TODO: handle other users
                }

                entityManager.getTransaction().commit();
                setSessionUser(user);
                return user;
            } catch (RuntimeException e) {
                entityManager.getTransaction().rollback();
                throw e;
            }
        }
    } else {
        throw new SecurityException();
    }
}

From source file:nl.b3p.datastorelinker.gui.stripes.ConvertLargeObjectsAction.java

public void convertLOBS() throws SQLException, NoSuchFieldException, IllegalArgumentException,
        IllegalAccessException, IOException {

    statusArray.put("Opening connection..");
    EntityManager em = JpaUtilServlet.getThreadEntityManager();
    Session session = (Session) em.getDelegate();
    Connection conn = session.connection();
    conn.setAutoCommit(false);//from w w  w . j a  v  a2 s .  c o m
    DatabaseMetaData metadata = conn.getMetaData();
    statusArray.put("Digging deep to retrieve implementation");

    Field f = metadata.getClass().getDeclaredField("inner");

    f.setAccessible(true);
    Object pgconnMetadata = f.get(metadata);
    statusArray.put("Retrieving postgres connection..");
    org.postgresql.PGConnection connection = (org.postgresql.PGConnection) ((org.postgresql.jdbc4.Jdbc4DatabaseMetaData) pgconnMetadata)
            .getConnection();
    statusArray.put("Connection established");
    lom = connection.getLargeObjectAPI();
    statusArray.put("Create LargeObjectManager");
    em.getTransaction().begin();
    statusArray.put("Begin converting LOBs");
    processProcesses(em);
    processProcessesStatusses(em);

    statusArray.put("Converting finished");
    em.getTransaction().commit();
    statusArray.put("Changes saved");
}

From source file:org.traccar.web.server.model.DataServiceImpl.java

@Override
public Device addDevice(Device device) {
    EntityManager entityManager = getSessionEntityManager();
    synchronized (entityManager) {
        User user = getSessionUser();/*from  w w w .  jav  a  2 s  .c  o  m*/
        entityManager.getTransaction().begin();
        try {
            entityManager.persist(device);
            user.getDevices().add(device);
            entityManager.getTransaction().commit();
            return device;
        } catch (RuntimeException e) {
            entityManager.getTransaction().rollback();
            throw e;
        }
    }
}

From source file:org.traccar.web.server.model.DataServiceImpl.java

@Override
public Device removeDevice(Device device) {
    EntityManager entityManager = getSessionEntityManager();
    synchronized (entityManager) {
        User user = getSessionUser();/*from   ww  w  .j  a v  a  2  s  .co m*/
        entityManager.getTransaction().begin();
        try {
            device = entityManager.merge(device);
            user.getDevices().remove(device);
            device.setLatestPosition(null);
            entityManager.flush();
            Query query = entityManager.createQuery("DELETE FROM Position x WHERE x.device = :device");
            query.setParameter("device", device);
            query.executeUpdate();
            entityManager.remove(device);
            entityManager.getTransaction().commit();
            return device;
        } catch (RuntimeException e) {
            entityManager.getTransaction().rollback();
            throw e;
        }
    }
}

From source file:de.zib.gndms.infra.system.GNDMSystem.java

/**
 * Checks if a commit can be done on the database
 *
 * @throws RuntimeException if an error occured while commiting on the database
 *///w  ww .  j a v  a  2 s.  c  om
private void tryTxExecution() throws RuntimeException {
    final EntityManager em = emf.createEntityManager();
    try {
        em.getTransaction().begin();
        em.getTransaction().commit();
    } catch (RuntimeException re) {
        em.getTransaction().rollback();
        em.close();
        throw re;
    } finally {
        em.close();
    }
}

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

@POST
@Consumes(MediaType.APPLICATION_JSON)/*from  w  w  w.  ja va  2s.c o m*/
public Response subscribeFeed(@Context SecurityContext context, FeedSubscriptionData data) {
    FeedCategory fc = null;
    EntityManager em;
    EntityTransaction tx;
    User user;
    FeedData feedData;
    Feed f;
    boolean createdNewFD = false;

    if (data.getUrl() == null) {
        return Response.status(Response.Status.BAD_REQUEST).entity(new ErrorDescription("Feed URL missing"))
                .build();
    }

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

    try {
        if (data.getCategoryId() != 0) {
            try {
                fc = (FeedCategory) em
                        .createQuery("select fc from FeedCategory fc where fc.id = :id", FeedCategory.class)
                        .setParameter("id", data.getCategoryId()).getSingleResult();
            } catch (NoResultException e) {
                return Response.status(Response.Status.NOT_FOUND)
                        .entity(new ErrorDescription("Feed category not found")).build();
            }

            if (!fc.getUser().equals(user)) {
                return Response.status(Response.Status.FORBIDDEN)
                        .entity(new ErrorDescription("Feed category not owned by user")).build();
            }
        }

        // Try to look up existing FeedData
        try {
            feedData = (FeedData) em.createNamedQuery("FeedData.getByUrl").setParameter("url", data.getUrl())
                    .getSingleResult();
        } catch (NoResultException e) {
            feedData = new FeedData();
            feedData.setUrl(data.getUrl());

            try {
                loadFeedDetails(feedData);
            } catch (Exception ex) {
                e.printStackTrace();
                return Response.status(Response.Status.BAD_GATEWAY)
                        .entity(new ErrorDescription("Cannot fetch the feed")).build();
            }

            em.persist(feedData);
            createdNewFD = true;
        }

        f = new Feed();
        f.setUser(user);
        f.setFeedCategory(fc);
        f.setData(feedData);
        f.setName(feedData.getTitle());

        em.persist(f);

        tx.commit();

        if (createdNewFD)
            FeedsEngine.getInstance().submitFeedRefresh(feedData);

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

From source file:de.zib.gndms.logic.model.TaskAction.java

/**
 * Initializes a TaskAction by denoting an EntityManager and primary key
 *
 * Retrieves the model (an AbstractTask), managed by the EntityManager, sets it as the model of {@code this} and
 * makes a backup of it./*  w  ww . ja va  2  s. c om*/
 *
 * The AbstractTask is select by the primary key {@code pk}. The EntityManager {@code em}
 * will be set as EntityManager for {@code this}, using {@link #setOwnEntityManager(javax.persistence.EntityManager)}.
 *
 * @param em an EntityManager, storing AbstractTasks
 * @param pk the primary key a of specific AbstractTask, which is managed by the EntityManager
 */
public void initFromPk(final EntityManager em, final String pk) {
    boolean wasActive = em.getTransaction().isActive();
    if (!wasActive)
        em.getTransaction().begin();
    try {
        final AbstractTask model = em.find(getTaskClass(), pk);
        if (model == null)
            throw new IllegalArgumentException("Model not found for pk: " + pk);
        if (!wasActive)
            em.getTransaction().commit();
        setOwnEntityManager(em);
        setModelAndBackup(model);
    } finally {
        if (em.getTransaction().isActive()) {
            em.getTransaction().rollback();
        }
    }
}

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

/**
 *
 * @param request servlet request/*from ww  w  .  j  av  a2 s.  co 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 {
    String msg = request.getParameter("msg");
    EntityManager em = (EntityManager) request.getSession().getAttribute("em");
    Clock clk = (Clock) (request.getSession().getAttribute("clock"));
    Term term = Term.getTermforInstant(em, Instant.now(clk));
    if (msg.equals("get_appointments")) {
        String userId = request.getParameter("username");
        User user = em.find(User.class, userId);

        JSONArray json = getAppointments(user, term, clk);
        response.getWriter().write(json.toString());
    } else if (msg.equals("do_checkin")) {
        String userId = request.getParameter("username");
        String examId = request.getParameter("examid");
        User admin = (User) (request.getSession().getAttribute("user"));
        User student = em.find(User.class, userId);
        Exam exam = em.find(Exam.class, examId);

        Appointment appt = student.getAppointmentByExam(exam);
        em.getTransaction().begin();
        admin.checkInStudent(appt);
        em.persist(appt);
        em.persist(student);
        em.getTransaction().commit();

        JSONArray json = getAppointments(student, term, clk);
        response.getWriter().write(json.toString());
    } else {
        JSONObject json = new JSONObject();
        json.put("error", msg);
        response.getWriter().write(json.toString());
    }
}

From source file:nl.b3p.viewer.admin.stripes.GeoServiceRegistryActionBean.java

public Resolution addSubcategory() throws JSONException {
    EntityManager em = Stripersist.getEntityManager();

    JSONObject json = new JSONObject();

    json.put("success", Boolean.FALSE);

    String error = checkCategoryAndNameError();

    if (error == null) {
        for (Category child : category.getChildren()) {
            if (name.equals(child.getName())) {
                error = "Categorie met dezelfde naam bestaat al";
            }//from   w  w  w. jav  a  2s.co m
        }
    }

    if (error == null) {
        try {
            Category c = new Category();
            c.setName(name);
            c.setParent(category);
            category.getChildren().add(c);

            em.persist(c);
            em.getTransaction().commit();

            JSONObject node = new JSONObject();
            node.put("id", "c" + c.getId());
            node.put("name", c.getName());
            node.put("type", "category");
            node.put("isLeaf", true);
            node.put("parentid", nodeId);
            json.put("node", node);

            json.put("success", Boolean.TRUE);
        } catch (Exception e) {
            log.error("Fout bij toevoegen categorie", e);
            error = "Kan categorie niet toevoegen: " + e;
            Throwable t = e;
            while (t.getCause() != null) {
                t = t.getCause();
                error += "; " + t;
            }
        }
    }

    if (error != null) {
        json.put("error", error);
    }
    return new StreamingResolution("application/json", new StringReader(json.toString()));
}