Example usage for javax.persistence EntityManager getDelegate

Introduction

In this page you can find the example usage for javax.persistence EntityManager getDelegate.

Prototype

public Object getDelegate();

Source Link

Document

Return the underlying provider object for the EntityManager, if available.

Usage

From source file:org.artificer.repository.hibernate.HibernateUtil.java

private static void initDDL(EntityManager entityManager, Map<String, Object> properties) throws Exception {
    // If the DDL is not already installed in the DB, automatically do it on first use.
    SessionImplementor session = (SessionImplementor) entityManager.getDelegate();
    Connection connection = session.connection();

    if (!hasTables(connection)) {
        // our tables don't exist -- create them
        String dialect = (String) properties.get("hibernate.dialect");
        if (dialect != null) {
            String ddlFile;//from  w ww  .  ja v a 2  s.co  m
            if (dialect.contains("PostgreSQL")) {
                ddlFile = "postgres9.sql";
            } else if (dialect.contains("MySQL")) {
                ddlFile = "mysql5.sql";
            } else if (dialect.contains("Oracle")) {
                ddlFile = "oracle10.sql";
            } else if (dialect.contains("SQLServer")) {
                ddlFile = "mssql2012.sql";
            } else if (dialect.contains("DB2")) {
                ddlFile = "db2.sql";
            } else {
                ddlFile = "h2.sql";
            }

            Statement statement = null;
            try {
                URL url = HibernateUtil.class.getClassLoader().getResource("ddl/" + ddlFile);
                String ddl = IOUtils.toString(url);

                statement = connection.createStatement();
                statement.executeUpdate(ddl);
            } finally {
                if (statement != null) {
                    statement.close();
                }
                // do *not* close the connection -- it will still be used by this instance of the EntityManager
            }
        }
    }
}

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From source file:org.compass.gps.device.jpa.extractor.NativeJpaHelper.java

public static EntityManager extractNativeJpa(EntityManager em) {
    if (extractors.length == 0) {
        return em;
    }/*from  w w w  .ja  v a 2  s. com*/
    EntityManager nativeEm = em;
    do {
        while (true) {
            // even though getDelegate should return the actual underlying implementation (Hibernate Session for example)
            // some app servers that wrap the EM, actually return the wrapped EM, and not the wrapped EM # getDelegate()
            Object delegate = nativeEm.getDelegate();
            if (delegate == nativeEm) {
                break;
            }
            if (delegate instanceof EntityManager) {
                nativeEm = (EntityManager) delegate;
            } else {
                break;
            }
        }
        em = nativeEm;
        for (NativeJpaExtractor extractor : extractors) {
            nativeEm = extractor.extractNative(nativeEm);
        }
    } while (nativeEm != em);

    return nativeEm;
}

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From source file:org.rhq.core.domain.server.PersistenceUtility.java

public static Session getHibernateSession(EntityManager entityManager) {
    Session session;/*w  w  w  . j  a  va  2s .c o  m*/
    if (entityManager.getDelegate() instanceof EntityManagerImpl) {
        EntityManagerImpl entityManagerImpl = (EntityManagerImpl) entityManager.getDelegate();
        session = entityManagerImpl.getSession();
    } else {
        session = (Session) entityManager.getDelegate();
    }

    return session;
}

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From source file:com.webbfontaine.valuewebb.action.rimm.CacheCleaner.java

public Object clean() {

    if (StringUtils.trimToNull(entityClass) != null) {

        EntityManager entityManager = Utils.getEntityManager();
        SessionFactory sf = ((Session) entityManager.getDelegate()).getSessionFactory();
        EntityPersister classMetadata = (EntityPersister) sf.getClassMetadata(entityClass);
        if (classMetadata != null && classMetadata.hasCache()) {
            LOGGER.info("Evicting cache for {0}", entityClass);
            sf.evictEntity(entityClass);
            sf.evictQueries();/*from  w w w  .j a  va 2  s . com*/
            InfoHandling.getInstance().setInfoList("Cache evicted");
        } else {
            ErrorHandling.addFacesMessageError(null, "Entity is not cached");
        }
    }
    return "";
}

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From source file:org.isatools.isatab.ISATABUnloader.java

public void unload() {
    List<Study> studies = new LinkedList<Study>();

    EntityManager emgr = daoFactory.getEntityManager();
    Session session = (Session) emgr.getDelegate();
    EntityTransaction ts = emgr.getTransaction();

    if (studyAcc != null) {
        StudyDAO dao = daoFactory.getStudyDAO();
        Study study = dao.getByAcc(studyAcc);
        if (study == null) {
            log.warn("Study with accession '" + studyAcc + "' not found, no undeletion performed.");
            return;
        }/* www  . ja va  2s . c om*/
        studies.add(study);

        unloadMgr = new UnloadManager(daoFactory, study.getSubmissionTs());
        StudyUnloader unloader = (StudyUnloader) unloadMgr.getUnloader(Study.class);
        unloader.queueByAcc(studyAcc);
    } else {
        studies.addAll(daoFactory.getStudyDAO().getBySubmissionTs(unloadMgr.getSubmissionTs()));
        unloadMgr.queueAll(studies);
    }

    try {
        if (!ts.isActive()) {
            ts.begin();
        }
        unloadMgr.delete();
        ts.commit();
    } catch (HibernateException e) {
        if (ts.isActive()) {
            ts.rollback();
        }
        throw new TabInternalErrorException("Error while performing the unloading:" + e.getMessage());
    } finally {
        session.flush();
    }

    DataFilesDispatcher fileDispatcher = new DataFilesDispatcher(daoFactory.getEntityManager());
    fileDispatcher.undispatch(studies);
}

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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 va  2  s .co  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");
}

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From source file:pl.com.bottega.testutils.HibernateExtendedJpaDialect.java

/**
 * This method is overridden to set custom isolation levels on the connection
 * @param entityManager/*www.j av  a 2s  . c  om*/
 * @param definition
 * @return
 * @throws PersistenceException
 * @throws SQLException
 * @throws TransactionException
 */
@Override
public Object beginTransaction(final EntityManager entityManager, final TransactionDefinition definition)
        throws PersistenceException, SQLException, TransactionException {
    Session session = (Session) entityManager.getDelegate();
    if (definition.getTimeout() != TransactionDefinition.TIMEOUT_DEFAULT) {
        getSession(entityManager).getTransaction().setTimeout(definition.getTimeout());
    }

    entityManager.getTransaction().begin();
    logger.debug("Transaction started");

    session.doWork(new Work() {

        public void execute(Connection connection) throws SQLException {
            logger.debug("The connection instance is {}", connection);
            logger.debug(
                    "The isolation level of the connection is {} and the isolation level set on the transaction is {}",
                    connection.getTransactionIsolation(), definition.getIsolationLevel());
            DataSourceUtils.prepareConnectionForTransaction(connection, definition);
        }
    });

    return prepareTransaction(entityManager, definition.isReadOnly(), definition.getName());
}

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From source file:org.spring.data.gemfire.app.dao.vendor.SQLFireJpaUserDao.java

@Override
protected EntityManager prepare(final EntityManager entityManager) {
    Assert.notNull(entityManager, "The JPA EntityManager must not be null!");
    Assert.state(entityManager.isOpen(), "The EntityManager is closed!");

    if (entityManager.getDelegate() instanceof Session) {
        Session session = (Session) entityManager.getDelegate();

        if (session instanceof SessionImpl) {
            try {
                ((SessionImpl) session).connection()
                        .setTransactionIsolation(Connection.TRANSACTION_READ_COMMITTED);
                //((SessionImpl) session).connection().setTransactionIsolation(Connection.TRANSACTION_READ_UNCOMMITTED);
                //((SessionImpl) session).connection().setTransactionIsolation(Connection.TRANSACTION_REPEATABLE_READ);
                //((SessionImpl) session).connection().setTransactionIsolation(Connection.TRANSACTION_SERIALIZABLE);
                //((SessionImpl) session).connection().setTransactionIsolation(Connection.TRANSACTION_NONE);
            } catch (SQLException e) {
                //System.err.printf("Failed to set the JDBC Connection Transaction Isolation Level to (READ_COMMITTED)!%n%1$s%n", e);
                throw new PersistenceException(
                        "Failed to set the JDBC Connection Transaction Isolation-level to (READ_COMMITTED)!",
                        e);/*w w w.  jav a2  s. co m*/
            }
        }
    }

    return entityManager;
}

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From source file:org.giwi.finistjug.camel.demo.processor.ListOfSessionsProcessor.java

@SuppressWarnings("unchecked")
@Override//www  . jav  a 2s. c om
public void process(final Exchange exchange) throws Exception {
    final List<JUGSession> listOfSessions = new ArrayList<JUGSession>();
    exchange.getIn().setBody(null);

    // Rcupration de l'entityManager
    final EntityManager em = EntityManagerUtil.getEntityManager();
    final ExpressionBuilder builder = new ExpressionBuilder();
    final ReadAllQuery databaseQuery = new ReadAllQuery(Jugpresentation.class, builder);
    final Query query = ((JpaEntityManager) em.getDelegate()).createQuery(databaseQuery);
    // excution de la requte
    try {
        final List<Jugpresentation> jugPres = query.getResultList();
        final DozerBeanMapper mapper = exchange.getContext().getRegistry().lookup("mapper",
                DozerBeanMapper.class);
        for (final Jugpresentation jugP : jugPres) {
            em.refresh(jugP);
            // mapping Dozer
            listOfSessions.add(mapper.map(jugP, JUGSession.class));
        }
    } catch (final NoResultException e) {
        // pas de rsultat trouv, c'est pas bien grave
        if (LOG.isInfoEnabled()) {
            LOG.info(e);
        }
    }
    final ListeDesSessionsResponse resp = new ListeDesSessionsResponse();
    resp.setListeDesSessions(listOfSessions);
    exchange.getIn().setBody(resp);
}

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From source file:com.impetus.client.couchdb.crud.CouchDBClientTest.java

@Test
@PerfTest(invocations = 10)/*w w  w  .j  a v  a2  s . co  m*/
public void testCRUD() {
    logger.info("On testInsert");
    EntityManager em = emf.createEntityManager();
    Map<String, Client> clients = (Map<String, Client>) em.getDelegate();
    CouchDBClient client = (CouchDBClient) clients.get(_PU);
    onInsert(client);
    onUpdate(client);
    onDelete(client);
    em.close();
}

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