001/* 
002 * JKNIV, whinstone one contract to access your database.
003 * 
004 * Copyright (C) 2017, the original author or authors.
005 *
006 * This library is free software; you can redistribute it and/or
007 * modify it under the terms of the GNU Lesser General Public
008 * License as published by the Free Software Foundation; either
009 * version 2.1 of the License.
010 * 
011 * This library is distributed in the hope that it will be useful,
012 * but WITHOUT ANY WARRANTY; without even the implied warranty of
013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014 * Lesser General Public License for more details.
015 * 
016 * You should have received a copy of the GNU Lesser General Public
017 * License along with this library; if not, write to the Free Software Foundation, Inc., 
018 * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
019 */
020package net.sf.jkniv.whinstone.jpa2;
021
022import javax.persistence.EntityManager;
023
024import net.sf.jkniv.whinstone.transaction.Transactional;
025
026public interface JpaEmFactory
027{
028    
029    EntityManager createEntityManager();
030    
031    /**
032     * Retrieve the transaction in progress from thread.
033     * @throws IllegalStateException if the entity manager is container-managed
034     * @return Transaction from thread 
035     */
036    Transactional getTransaction();
037    
038    boolean isActive();
039    
040    boolean close(EntityManager em);
041    
042    boolean close();
043}