2 * Copyright (C) 2016, 2017 Roland Häder
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
17 package org.mxchange.jcoreee.database;
19 import javax.persistence.EntityManager;
20 import javax.persistence.PersistenceContext;
21 import org.mxchange.jcoreee.bean.BaseBean;
24 * A helper class for beans that access the database.
26 * @author Roland Häder<roland@mxchange.org>
28 public abstract class BaseDatabaseBean extends BaseBean {
33 private static final long serialVersionUID = 217_687_175_985_875L;
39 private EntityManager entityManager;
42 * This class' default protected constructor. Please call
43 * super("jms/project-queue-factory", "jms/project-email-queue"); if you
44 * need to send emails.
46 protected BaseDatabaseBean () {
47 // Call super constructor
52 * Constructor with queue factory JNDI and email-queue JNDI names
54 * @param factoryJndi JNDI name for queue factory
55 * @param emailQueueJndi JNDI name for email queue
57 protected BaseDatabaseBean (final String factoryJndi, final String emailQueueJndi) {
58 // Call super constructor
59 super(factoryJndi, emailQueueJndi);
63 * Getter for connection instance
65 * @return Connection instance
67 protected EntityManager getEntityManager () {
68 return this.entityManager;