--- /dev/null
+/*
+ * Copyright (C) 2016 - 2018 Free Software Foundation
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.mxchange.jcoreee.bean.ejb;
+
+import java.io.Serializable;
+import java.text.MessageFormat;
+import javax.faces.FacesException;
+import javax.jms.Connection;
+import javax.jms.JMSException;
+import javax.jms.MessageProducer;
+import javax.jms.ObjectMessage;
+import javax.jms.Queue;
+import javax.jms.QueueConnectionFactory;
+import javax.jms.Session;
+import javax.naming.Context;
+import javax.naming.InitialContext;
+import javax.naming.NamingException;
+import javax.persistence.EntityManager;
+import javax.persistence.PersistenceContext;
+import org.mxchange.jcoreeelogger.beans.local.logger.Log;
+import org.mxchange.jcoreeelogger.beans.local.logger.LoggerBeanLocal;
+
+/**
+ * A helper class for beans that access the database.
+ * <p>
+ * @author Roland Häder<roland@mxchange.org>
+ */
+public abstract class BaseEnterpriseBean implements Serializable {
+
+ /**
+ * Serial number
+ */
+ private static final long serialVersionUID = 217_687_175_985_875L;
+
+ /**
+ * Connection
+ */
+ private Connection connection;
+
+ /**
+ * Entity manager
+ */
+ @PersistenceContext
+ private EntityManager entityManager;
+
+ /**
+ * Logger instance
+ */
+ @Log
+ private LoggerBeanLocal loggerBeanLocal;
+
+ /**
+ * Message producer
+ */
+ private MessageProducer messageProducer;
+
+ /**
+ * Mailer message queue
+ */
+ private Queue queue;
+
+ /**
+ * Session instance
+ */
+ private Session session;
+
+ /**
+ * This class' default protected constructor. Please invoke
+ * super("jms/project-queue-factory", "jms/project-email-queue"); if you
+ * need to send emails.
+ */
+ protected BaseEnterpriseBean () {
+ // Call super constructor
+ super();
+
+ // Init logger instance
+ this.initLoggerInstance();
+ }
+
+ /**
+ * Constructor with queue factory JNDI and queue JNDI names
+ * <p>
+ * @param factoryJndi JNDI name for queue factory
+ * @param queueJndi JNDI name for email queue
+ */
+ protected BaseEnterpriseBean (final String factoryJndi, final String queueJndi) {
+ // Call default constructor
+ this();
+
+ // Try it out
+ try {
+ // Get initial context
+ Context context = new InitialContext();
+
+ // Get factory from JMS resource
+ QueueConnectionFactory connectionFactory = (QueueConnectionFactory) context.lookup(factoryJndi);
+
+ // Lookup queue
+ this.queue = (Queue) context.lookup(queueJndi);
+
+ // Create connection
+ this.connection = connectionFactory.createConnection();
+
+ // Init session instance
+ this.session = this.connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
+
+ // And message producer
+ this.messageProducer = this.session.createProducer(this.queue);
+ } catch (final NamingException | JMSException e) {
+ // Continued to throw
+ throw new FacesException(e);
+ }
+ }
+
+ /**
+ * Initializes logger instance
+ */
+ private void initLoggerInstance () {
+ try {
+ // Get initial context
+ Context context = new InitialContext();
+
+ // Lookup logger
+ this.loggerBeanLocal = (LoggerBeanLocal) context.lookup("java:global/jcore-logger-ejb/logger!org.mxchange.jcoreeelogger.beans.local.logger.LoggerBeanLocal"); //NOI18N
+ } catch (final NamingException ex) {
+ // Continue to throw
+ throw new RuntimeException(MessageFormat.format("context.lookup() failed: {0}", ex.getMessage()), ex); //NOI18N
+ }
+ }
+
+ /**
+ * Getter for connection instance
+ * <p>
+ * @return Connection instance
+ */
+ protected EntityManager getEntityManager () {
+ return this.entityManager;
+ }
+
+ /**
+ * Getter for loggerBeanLocal
+ * <p>
+ * @return Logger instance
+ */
+ protected LoggerBeanLocal getLoggerBeanLocal () {
+ return this.loggerBeanLocal;
+ }
+
+ /**
+ * Getter for configured message producer instance
+ * <p>
+ * @return Message producer
+ */
+ protected MessageProducer getMessageProducer () {
+ return this.messageProducer;
+ }
+
+ /**
+ * Getter for configured session instance
+ * <p>
+ * @return Session
+ */
+ protected Session getSession () {
+ return this.session;
+ }
+
+ /**
+ * Sends given message to configured queue
+ * <p>
+ * @param message Message to send
+ * <p>
+ * @throws JMSException if something went wrong
+ */
+ protected void sendMessage (final ObjectMessage message) throws JMSException {
+ // Trace message
+ this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.sendMessage: message={1} - CALLED!", this.getClass().getSimpleName(), message)); //NOI18N
+
+ // The parameter should be valid
+ if (null == message) {
+ // Throw NPE
+ throw new NullPointerException("message is null"); //NOI18N
+ } else if (this.getMessageProducer() == null) {
+ // Throw NPE again
+ throw new NullPointerException("this.messageProvider is null"); //NOI18N
+ }
+
+ // Send it
+ this.getMessageProducer().send(message);
+
+ // Trace message
+ this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.sendMessage: EXIT!", this.getClass().getSimpleName())); //NOI18N
+ }
+
+}
projects / jcore-utils.git / blobdiff