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.InfrastructureCollectionService.java

/**
 * Register a new infrastructure./* w w w  .  j  av  a2s . c  om*/
 *
 * @param infra The infrastructure to register
 * @return The registered infrastructure
 */
@POST
@Status(Response.Status.CREATED)
@Consumes({ MediaType.APPLICATION_JSON, Constants.INDIGOMIMETYPE })
@Produces(Constants.INDIGOMIMETYPE)
public final Infrastructure createInfrastructure(final Infrastructure infra) {
    Date now = new Date();
    infra.setDateCreated(now);
    EntityManager em = getEntityManager();
    EntityTransaction et = null;
    try {
        et = em.getTransaction();
        et.begin();
        em.persist(infra);
        et.commit();
        log.debug("New infrastructure registered: " + infra.getId());
    } catch (RuntimeException re) {
        if (et != null && et.isActive()) {
            et.rollback();
        }
        log.error("Impossible to create the infrastructure");
        log.error(re);
    } finally {
        em.close();
    }
    return infra;
}

From source file:it.infn.ct.futuregateway.apiserver.v1.InfrastructureCollectionService.java

/**
 * Retrieve the application list.//from  ww w. ja  va 2 s .  c o m
 * The fields not requested for the list are cleaned.
 * @return The list of applications
 */
private List<Infrastructure> retrieveInfrastructureList() {
    List<Infrastructure> lstInfras;
    EntityManager em = getEntityManager();
    EntityTransaction et = null;
    try {
        et = em.getTransaction();
        et.begin();
        lstInfras = em.createNamedQuery("infrastructures.all", Infrastructure.class).getResultList();
        et.commit();
    } catch (RuntimeException re) {
        if (et != null && et.isActive()) {
            et.rollback();
        }
        log.error("Impossible to retrieve the infrastructure list");
        log.error(re);
        throw new RuntimeException("Impossible to access the " + "infrastructures list");
    } finally {
        em.close();
    }
    if (lstInfras != null) {
        for (Infrastructure in : lstInfras) {
            in.setDescription(null);
            in.setParameters(null);
        }
    }
    return lstInfras;
}

From source file:name.livitski.tools.persista.TransactionalWork.java

/**
 * Performs the {@link #code database operations} provided by
 * the subclass in JPA transactional brackets. If there is currently
 * no active transaction at the entity manager, a new transaction
 * is started.//from  ww  w  . j  a va2  s. c  om
 * If the code finishes normally and does not request the rollback,
 * the transaction is committed if it was started by this method
 * (local transaction).
 * If the implementor's code throws an exception or requests the
 * rollback, the local transaction is rolled back and any ongoing
 * transaction is marked
 * {@link EntityTransaction#setRollbackOnly() rollback-only}.
 * @param db the entity manager the operation will be performed with
 * @return <code>true</code> if the transaction has or may still
 * be committed
 * @throws AbstractStorageException indicates an error during
 * the operation
 * @throws RuntimeException any unchecked implementor's exceptions
 * will be rethrown
 * @see EntityManager#getTransaction()
 */
public boolean exec(final EntityManager db) throws AbstractStorageException {
    final EntityTransaction transaction = db.getTransaction();
    boolean commit = false;
    Exception status = null;
    boolean localTransaction;
    if (transaction.isActive())
        localTransaction = false;
    else {
        transaction.begin();
        localTransaction = true;
    }
    try {
        commit = code(db);
        return commit;
    } catch (AbstractStorageException fault) {
        status = fault;
        throw fault;
    } catch (RuntimeException fault) {
        status = fault;
        throw fault;
    } finally {
        if (!localTransaction) {
            if (commit)
                db.flush();
            else
                transaction.setRollbackOnly();
        } else if (!commit || transaction.getRollbackOnly()) {
            try {
                transaction.rollback();
            } catch (RuntimeException fault) {
                if (null != status)
                    log().error("Transaction rollback failed", fault);
                else
                    throw fault;
            }
        } else // commit local transaction
        {
            try {
                transaction.commit();
            } catch (RuntimeException fault) {
                throw fault;
            }
        }
    }
}

From source file:com.epam.training.taranovski.web.project.repository.implementation.BasicSkillRepositoryImplementation.java

@Override
public List<BasicSkill> getSkillsNotInEmployee(Employee employee) {
    EntityManager em = entityManagerFactory.createEntityManager();
    List<BasicSkill> list = new LinkedList<>();
    try {/*w w w. j  a va 2s .  c  o  m*/
        em.getTransaction().begin();

        TypedQuery<BasicSkill> query = em.createNamedQuery("BasicSkill.findSkillsNotInEmployee",
                BasicSkill.class);
        query.setParameter("employee", employee);
        list = query.getResultList();

        em.getTransaction().commit();
    } catch (RuntimeException e) {
        Logger.getLogger(BasicSkillRepositoryImplementation.class.getName()).info(e);
    } finally {
        if (em.getTransaction().isActive()) {
            em.getTransaction().rollback();
        }
        em.close();
    }

    return list;
}

From source file:com.epam.training.taranovski.web.project.repository.implementation.BasicSkillRepositoryImplementation.java

@Override
public List<BasicSkill> getSkillsNotInVacancy(Vacancy vacancy) {
    EntityManager em = entityManagerFactory.createEntityManager();
    List<BasicSkill> list = new LinkedList<>();
    try {//from   www . ja  v a2 s.  co m
        em.getTransaction().begin();

        TypedQuery<BasicSkill> query = em.createNamedQuery("BasicSkill.findSkillsNotInVacancy",
                BasicSkill.class);
        query.setParameter("vacancy", vacancy);
        list = query.getResultList();

        em.getTransaction().commit();
    } catch (RuntimeException e) {
        Logger.getLogger(BasicSkillRepositoryImplementation.class.getName()).info(e);
    } finally {
        if (em.getTransaction().isActive()) {
            em.getTransaction().rollback();
        }
        em.close();
    }

    return list;
}

From source file:org.SRV.testServlet.java

@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    double value1 = Double.parseDouble(request.getParameter("val1"));
    double value2 = Double.parseDouble(request.getParameter("val2"));

    UserDetails user = (UserDetails) SecurityContextHolder.getContext().getAuthentication().getPrincipal();
    String username = user.getUsername();
    //com.seostella_springsecuritybasics_war_1.0.0-BUILD-SNAPSHOTPU
    entityManagerFactory = Persistence.createEntityManagerFactory("org.SRV_war_1.0.0-BUILD-SNAPSHOTPU");

    double result = 0;
    switch (request.getParameter("operation").charAt(0)) {
    case '+':
        result = value1 + value2;/*w w  w .j  a v  a  2 s  .  c o m*/
        break;
    case '-':
        result = value1 - value2;
        break;
    case '*':
        result = value1 * value2;
        break;
    case '/':
        result = value1 / value2;
        break;
    default:
        break;
    }

    EntityManager entityManager = entityManagerFactory.createEntityManager();
    entityManager.getTransaction().begin();
    Date date = new Date();
    Essence essence = new Essence();
    essence.setLogin(username);
    essence.setDate(date);
    essence.setValue1(Double.toString(value1));
    essence.setValue2(Double.toString(value2));
    essence.setOperation(request.getParameter("operation"));
    essence.setResult(Double.toString(result));
    entityManager.persist(essence);
    entityManager.getTransaction().commit();
    entityManager.clear();
    entityManager.close();
    entityManagerFactory.close();
    JSONObject obj;
    obj = new JSONObject();
    obj.put("result", result);
    //response.getOutputStream().print(obj.toString());
    response.getWriter().write(obj.toString());
}

From source file:com.epam.training.taranovski.web.project.repository.implementation.EmployerRepositoryImplementation.java

@Override
public boolean update(Employer employer) {
    EntityManager em = entityManagerFactory.createEntityManager();
    boolean success = true;
    try {/*w ww  .j ava  2 s .c om*/
        em.getTransaction().begin();

        em.merge(employer);
        em.flush();

        em.getTransaction().commit();
        success = true;
    } catch (RuntimeException e) {
        Logger.getLogger(BasicSkillRepositoryImplementation.class.getName()).info(e);
    } finally {
        if (em.getTransaction().isActive()) {
            em.getTransaction().rollback();
            success = false;
        }
        em.close();
    }

    return success;
}

From source file:com.epam.training.taranovski.spring.repository.oracle.AdminRepositoryOracle.java

/**
 *
 * @param id/* w ww  .  j  a  v a2 s .  c  o m*/
 * @return
 */
@Override
public Admin getById(int id) {
    EntityManager em = emf.createEntityManager();
    Admin admin;
    try {
        em.getTransaction().begin();
        admin = em.find(Admin.class, id);
        em.getTransaction().commit();
    } finally {
        if (em.getTransaction().isActive()) {
            em.getTransaction().rollback();
        }
        em.close();
    }

    return admin;
}

From source file:it.infn.ct.futuregateway.apiserver.v1.ApplicationCollectionService.java

/**
 * Retrieve the application list./*from   w  w  w .ja v  a2  s . co m*/
 * The fields not requested for the list are cleaned.
 * @return The list of applications
 */
private List<Application> retrieveApplicationList() {
    List<Application> lstApps;
    EntityManager em = getEntityManager();
    EntityTransaction et = null;
    try {
        et = em.getTransaction();
        et.begin();
        lstApps = em.createNamedQuery("applications.all", Application.class).getResultList();
        et.commit();
    } catch (RuntimeException re) {
        if (et != null && et.isActive()) {
            et.rollback();
        }
        log.error("Impossible to retrieve the Application list");
        log.error(re);
        throw new RuntimeException("Impossible to access the " + "application list");
    } finally {
        em.close();
    }
    if (lstApps != null) {
        for (Application ap : lstApps) {
            ap.setDescription(null);
            ap.setParameters(null);
        }
    }
    return lstApps;
}

From source file:nl.b3p.kaartenbalie.service.SecurityRealm.java

/** Checks wether an user, given his username and password, is allowed to use the system.
 *
 * @param username String representing the username.
 * @param password String representing the password.
 *
 * @return a principal object containing the user if he has been found as a registered user. Otherwise this object wil be empty (null).
 */// www.j a va 2s. com
@Override
public Principal authenticate(String username, String password) {

    String encpw = null;
    try {
        encpw = KBCrypter.encryptText(password);
    } catch (Exception ex) {
        log.error("error encrypting password: ", ex);
    }
    Object identity = null;
    EntityTransaction tx = null;
    try {
        identity = MyEMFDatabase.createEntityManager(MyEMFDatabase.REALM_EM);
        EntityManager em = MyEMFDatabase.getEntityManager(MyEMFDatabase.REALM_EM);
        tx = em.getTransaction();
        tx.begin();
        try {
            User user = (User) em
                    .createQuery("from User u where " + "u.timeout > :nu "
                            + "and lower(u.username) = lower(:username) " + "and u.password = :password")
                    .setParameter("nu", new Date()).setParameter("username", username)
                    .setParameter("password", encpw).getSingleResult();
            // if we get a result, this means successful login
            // set lastloginstatus to null to indicate success
            user.setLastLoginStatus(null);

            return user;
        } catch (NoResultException nre) {
            log.debug("No results using encrypted password");
        }
        // if login not succesful, set userstate to LOGIN_STATE_WRONG_PASSW
        User wrong_password_user = (User) em
                .createQuery(
                        "from User u where " + "u.timeout > :nu " + "and lower(u.username) = lower(:username) ")
                .setParameter("nu", new Date()).setParameter("username", username).getSingleResult();
        wrong_password_user.setLastLoginStatus(User.LOGIN_STATE_WRONG_PASSW_OR_ACCOUNT_EXPIRED);
        em.flush();
        log.warn("Login failure for username " + username);
    } catch (Exception e) {
        log.error("Exception checking user credentails", e);
        if (tx != null && tx.isActive()) {
            tx.rollback();
        }
    } finally {
        if (tx != null && tx.isActive() && !tx.getRollbackOnly()) {
            tx.commit();
        }
        MyEMFDatabase.closeEntityManager(identity, MyEMFDatabase.REALM_EM);
    }

    return null;
}