Examples of org.hibernate.Session.merge()

org.hibernate.Session.merge()
Copy the state of the given object onto the persistent object with the same identifier. If there is no persistent instance currently associated with the session, it will be loaded. Return the persistent instance. If the given instance is unsaved, save a copy of and return it as a newly persistent instance. The given instance does not become associated with the session. This operation cascades to associated instances if the association is mapped with cascade="merge".

The semantics of this method are defined by JSR-220. @param object a detached instance with state to be copied @return an updated persistent instance

  public Object saveOrUpdate(Object feature) throws LayerException {
    // force the srid value
    enforceSrid(feature);
    Session session = getSessionFactory().getCurrentSession();
    // using merge to allow detached objects, although Geomajas avoids them
    return session.merge(feature);
  }


  public void delete(String featureId) throws LayerException {
    Session session = getSessionFactory().getCurrentSession();
    session.delete(getFeature(featureId));

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    final Session session = sessions.openSession();
    Transaction transaction = session.beginTransaction();


    // when updating the golf player
    GolfPlayer ben = new GolfPlayer( 1L, "Ben", 0.2 );
    session.merge( ben );


    transaction.commit();
    session.close();


    // then expect one (batched) insert with the configured write concern

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    Session session = sessions.openSession();
    Transaction transaction = session.beginTransaction();


    // when associating the golf course to the player
    GolfPlayer ben = new GolfPlayer( 1L, "Ben", 0.1, new GolfCourse( 1L, "Bepple Peach" ) );
    session.merge( ben );


    transaction.commit();
    session.close();


    // then expect one update using the configured write concern for adding the row

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    Session session = sessions.openSession();
    Transaction transaction = session.beginTransaction();


    // when merging the player with two associated courses
    GolfPlayer ben = new GolfPlayer( 1L, "Ben", 0.1, new GolfCourse( 1L, "Bepple Peach" ), new GolfCourse( 2L, "Ant Sandrews" ) );
    session.merge( ben );


    transaction.commit();
    session.close();


    // then expect updates to the player document using the configured write concern

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    Session session = sessions.openSession();
    Transaction transaction = session.beginTransaction();


    // when merging the player with two associated courses
    GolfPlayer ben = new GolfPlayer( 1L, "Ben", 0.1, new GolfCourse( 1L, "Bepple Peach" ), new GolfCourse( 2L, "Ant Sandrews" ) );
    session.merge( ben );


    transaction.commit();
    session.close();


    // then expect one update to the association collection

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    Session session = sessions.openSession();
    Transaction transaction = session.beginTransaction();


    // when removing the association
    GolfPlayer ben = new GolfPlayer( 1L, "Ben", 0.1 );
    session.merge( ben );


    transaction.commit();
    session.close();


    // then expect one call to update using the configured write concern

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    Session session = sessions.openSession();
    Transaction transaction = session.beginTransaction();


    // when removing the association
    GolfPlayer ben = new GolfPlayer( 1L, "Ben", 0.1 );
    session.merge( ben );


    transaction.commit();
    session.close();


    // then expect one call to remove with the configured write concern

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    session.clear();


    transaction = session.beginTransaction();
    loadedHyp.setDescription( "P != NP");
    session.merge( loadedHyp );
    transaction.commit();


    session.clear();


    transaction = session.beginTransaction();

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   }


   public Object save(Object obj) throws Exception
   {
      Session session = openSession();
      session.merge(obj);
      session.flush();
      return obj;
   }


   public Object remove(Object obj) throws Exception

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                    .list();
            if (workspaces.size() == 0) {
                throw new LumifyException("Could not find workspace with id: " + workspaceId);
            }
            sqlUser.setCurrentWorkspace(workspaces.get(0));
            session.merge(sqlUser);
            transaction.commit();
        } catch (HibernateException e) {
            if (transaction != null) {
                transaction.rollback();
            }

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