Examples of javax.persistence.EntityManager.merge()

javax.persistence.EntityManager.merge()
Merge the state of the given entity into the current persistence context. @param entity @return the instance that the state was merged to @throws IllegalStateException if this EntityManager has been closed @throws IllegalArgumentException if instance is not anentity or is a removed entity @throws TransactionRequiredException if invoked on acontainer-managed entity manager of type PersistenceContextType.TRANSACTION and there is no transaction.

      tx.begin();
      if (fId.getFlvRecordingId() == 0) {
        session.persist(fId);
          } else {
            if (!session.contains(fId)) {
              session.merge(fId);
          }
      }
      session.flush();
      tx.commit();
      PersistenceSessionUtil.closeSession(idf);

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      rtype.setDeleted("false");
      Object idf = PersistenceSessionUtil.createSession();
      EntityManager session = PersistenceSessionUtil.getSession();
      EntityTransaction tx = session.getTransaction();
      tx.begin();
      rtype = session.merge(rtype);
      session.flush();
      long returnId = rtype.getRoomtypes_id();
      tx.commit();
      PersistenceSessionUtil.closeSession(idf);
      return returnId;

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      try {
        Object idf = PersistenceSessionUtil.createSession();
        EntityManager session = PersistenceSessionUtil.getSession();
        EntityTransaction tx = session.getTransaction();
        tx.begin();
        configuration = session.merge(configuration);
        session.flush();
        session.refresh(configuration);
        tx.commit();
        PersistenceSessionUtil.closeSession(idf);
        ret = "Erfolgreich";

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      room.setStarttime(new Date());
      Object idf = PersistenceSessionUtil.createSession();
      EntityManager session = PersistenceSessionUtil.getSession();
      EntityTransaction tx = session.getTransaction();
      tx.begin();
      room = session.merge(room);
      long returnId = room.getRooms_id();
      tx.commit();
      PersistenceSessionUtil.closeSession(idf);
      return returnId;
    } catch (Exception ex2) {

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    try {
      Object idf = PersistenceSessionUtil.createSession();
      EntityManager session = PersistenceSessionUtil.getSession();
      EntityTransaction tx = session.getTransaction();
      tx.begin();
      conf = session.merge(conf);
      Long configuration_id = conf.getConfiguration_id(); 
      tx.commit();
      PersistenceSessionUtil.closeSession(idf);
      return configuration_id;
    } catch (Exception ex2) {

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      Object idf = PersistenceSessionUtil.createSession();
      EntityManager session = PersistenceSessionUtil.getSession();
      EntityTransaction tx = session.getTransaction();
      tx.begin();
      
      ap = session.merge(ap);
      session.flush();
      Long appointment_id = ap.getAppointmentId();


      tx.commit();
      PersistenceSessionUtil.closeSession(idf);

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      tx.begin();
      if (conf.getConfiguration_id() == null) {
        session.persist(conf);
          } else {
            if (!session.contains(conf)) {
              conf = session.merge(conf);
          }
      }
      tx.commit();
      PersistenceSessionUtil.closeSession(idf);
      return conf.getConfiguration_id();

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      Object idf = PersistenceSessionUtil.createSession();
      EntityManager session = PersistenceSessionUtil.getSession();
      EntityTransaction tx = session.getTransaction();
      tx.begin();
      
      ap = session.merge(ap);
      session.flush();
      Long appointment_id = ap.getAppointmentId();


      tx.commit();
      PersistenceSessionUtil.closeSession(idf);

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        tx.begin();
        if (appointment.getAppointmentId() == null) {
          session.persist(appointment);
            } else {
              if (!session.contains(appointment)) {
                session.merge(appointment);
            }
        }
        tx.commit();
        PersistenceSessionUtil.closeSession(idf);
        return appointment.getAppointmentId();

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          ap.setUpdatetime(new Date());
          if (ap.getAppointmentId() == null) {
            session.persist(ap);
              } else {
                if (!session.contains(ap)) {
                  session.merge(ap);
              }
          }
          
        }

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