2 * Copyright (C) 2016 - 2018 Free Software Foundation
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.bean.ejb;
19 import java.io.Serializable;
20 import java.text.MessageFormat;
21 import javax.faces.FacesException;
22 import javax.jms.Connection;
23 import javax.jms.JMSException;
24 import javax.jms.MessageProducer;
25 import javax.jms.ObjectMessage;
26 import javax.jms.Queue;
27 import javax.jms.QueueConnectionFactory;
28 import javax.jms.Session;
29 import javax.naming.Context;
30 import javax.naming.InitialContext;
31 import javax.naming.NamingException;
32 import javax.persistence.EntityManager;
33 import javax.persistence.PersistenceContext;
34 import org.mxchange.jcoreeelogger.beans.local.logger.Log;
35 import org.mxchange.jcoreeelogger.beans.local.logger.LoggerBeanLocal;
38 * A helper class for beans that access the database.
40 * @author Roland Häder<roland@mxchange.org>
42 public abstract class BaseEnterpriseBean implements Serializable {
47 private static final long serialVersionUID = 217_687_175_985_875L;
52 private Connection connection;
58 private EntityManager entityManager;
64 private LoggerBeanLocal loggerBeanLocal;
69 private MessageProducer messageProducer;
72 * Mailer message queue
79 private Session session;
82 * This class' default protected constructor. Please invoke
83 * super("jms/project-queue-factory", "jms/project-email-queue"); if you
84 * need to send emails.
86 protected BaseEnterpriseBean () {
87 // Call super constructor
90 // Init logger instance
91 this.initLoggerInstance();
95 * Constructor with queue factory JNDI and queue JNDI names
97 * @param factoryJndi JNDI name for queue factory
98 * @param queueJndi JNDI name for email queue
100 protected BaseEnterpriseBean (final String factoryJndi, final String queueJndi) {
101 // Call default constructor
106 // Get initial context
107 Context context = new InitialContext();
109 // Get factory from JMS resource
110 QueueConnectionFactory connectionFactory = (QueueConnectionFactory) context.lookup(factoryJndi);
113 this.queue = (Queue) context.lookup(queueJndi);
116 this.connection = connectionFactory.createConnection();
118 // Init session instance
119 this.session = this.connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
121 // And message producer
122 this.messageProducer = this.session.createProducer(this.queue);
123 } catch (final NamingException | JMSException e) {
124 // Continued to throw
125 throw new FacesException(e);
130 * Initializes logger instance
132 private void initLoggerInstance () {
134 // Get initial context
135 Context context = new InitialContext();
138 this.loggerBeanLocal = (LoggerBeanLocal) context.lookup("java:global/jcore-logger-ejb/logger!org.mxchange.jcoreeelogger.beans.local.logger.LoggerBeanLocal"); //NOI18N
139 } catch (final NamingException ex) {
141 throw new RuntimeException(MessageFormat.format("context.lookup() failed: {0}", ex.getMessage()), ex); //NOI18N
146 * Getter for connection instance
148 * @return Connection instance
150 protected EntityManager getEntityManager () {
151 return this.entityManager;
155 * Getter for loggerBeanLocal
157 * @return Logger instance
159 protected LoggerBeanLocal getLoggerBeanLocal () {
160 return this.loggerBeanLocal;
164 * Getter for configured message producer instance
166 * @return Message producer
168 protected MessageProducer getMessageProducer () {
169 return this.messageProducer;
173 * Getter for configured session instance
177 protected Session getSession () {
182 * Sends given message to configured queue
184 * @param message Message to send
186 * @throws JMSException if something went wrong
188 protected void sendMessage (final ObjectMessage message) throws JMSException {
190 this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.sendMessage: message={1} - CALLED!", this.getClass().getSimpleName(), message)); //NOI18N
192 // The parameter should be valid
193 if (null == message) {
195 throw new NullPointerException("message is null"); //NOI18N
196 } else if (this.getMessageProducer() == null) {
198 throw new NullPointerException("this.messageProvider is null"); //NOI18N
202 this.getMessageProducer().send(message);
205 this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.sendMessage: EXIT!", this.getClass().getSimpleName())); //NOI18N