src/java/org/mxchange/pizzaapplication/beans/checkout/PizzaCheckoutWebSessionBean.java

   1 /*
   2  * Copyright (C) 2016, 2017 Roland Häder
   3  *
   4  * This program is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU Affero General Public License as
   6  * published by the Free Software Foundation, either version 3 of the
   7  * License, or (at your option) any later version.
   8  *
   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 Affero General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Affero General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17 package org.mxchange.pizzaapplication.beans.checkout;
  18
  19 import java.util.List;
  20 import javax.annotation.PostConstruct;
  21 import javax.annotation.PreDestroy;
  22 import javax.enterprise.context.SessionScoped;
  23 import javax.enterprise.event.Event;
  24 import javax.enterprise.inject.Any;
  25 import javax.faces.FacesException;
  26 import javax.inject.Inject;
  27 import javax.inject.Named;
  28 import javax.jms.Connection;
  29 import javax.jms.JMSException;
  30 import javax.jms.MessageProducer;
  31 import javax.jms.ObjectMessage;
  32 import javax.jms.Queue;
  33 import javax.jms.QueueConnectionFactory;
  34 import javax.jms.Session;
  35 import javax.naming.Context;
  36 import javax.naming.InitialContext;
  37 import javax.naming.NamingException;
  38 import org.mxchange.jshopcore.events.ObservableCheckoutCompletedEvent;
  39 import org.mxchange.jshopcore.events.ShopCheckoutCompletedEvent;
  40 import org.mxchange.jshopcore.model.basket.AddableBasketItem;
  41 import org.mxchange.jshopcore.wrapper.CheckoutWrapper;
  42 import org.mxchange.jshopcore.wrapper.WrapableCheckout;
  43 import org.mxchange.pizzaapplication.beans.BasePizzaController;
  44 import org.mxchange.pizzaapplication.beans.basket.PizzaBasketWebSessionController;
  45 import org.mxchange.pizzaapplication.beans.contact.PizzaContactWebSessionController;
  46 import org.mxchange.pizzaapplication.beans.customer.PizzaCustomerWebSessionController;
  47 import org.mxchange.pizzaapplication.beans.helper.PizzaWebRequestHelperController;
  48 import org.mxchange.pizzaapplication.beans.receipt.PizzaReceiptWebSessionController;
  49
  50 /**
  51  * Checkout controller
  52  * <p>
  53  * @author Roland Häder<roland@mxchange.org>
  54  */
  55 @Named ("checkoutController")
  56 @SessionScoped
  57 public class PizzaCheckoutWebSessionBean extends BasePizzaController implements PizzaCheckoutWebSessionController {
  58
  59         /**
  60          * Serial number
  61          */
  62         private static final long serialVersionUID = 51_987_348_347_183L;
  63
  64         ////////////////////// Bean injections ///////////////////////
  65         /**
  66          * Basket bean
  67          */
  68         @Inject
  69         private PizzaBasketWebSessionController basketController;
  70
  71         /**
  72          * Bean helper instance
  73          */
  74         @Inject
  75         private PizzaWebRequestHelperController beanHelper;
  76
  77         /**
  78          * Event fired when a checkout was completed by the user
  79          */
  80         @Inject
  81         @Any
  82         private Event<ObservableCheckoutCompletedEvent> checkoutCompletedEvent;
  83
  84         /**
  85          * Connection
  86          */
  87         private Connection connection;
  88
  89         /**
  90          * Contact controller
  91          */
  92         @Inject
  93         private PizzaContactWebSessionController contactController;
  94
  95         /**
  96          * Customer bean
  97          */
  98         @Inject
  99         private PizzaCustomerWebSessionController customerController;
 100
 101         /**
 102          * Object message
 103          */
 104         private ObjectMessage message;
 105
 106         /**
 107          * Message producer
 108          */
 109         private MessageProducer messageProducer;
 110
 111         /**
 112          * Queue instance
 113          */
 114         private Queue queue;
 115
 116         /**
 117          * Receipt bean
 118          */
 119         @Inject
 120         private PizzaReceiptWebSessionController receiptController;
 121
 122         /**
 123          * Session instance
 124          */
 125         private Session session;
 126
 127         /**
 128          * Destructor
 129          */
 130         @PreDestroy
 131         public void destroy () {
 132                 try {
 133                         // Try to close all
 134                         this.messageProducer.close();
 135                         this.session.close();
 136                         this.connection.close();
 137                 } catch (final JMSException ex) {
 138                         // @TODO: Continue to throw is fine?
 139                         throw new FacesException(ex);
 140                 }
 141         }
 142
 143         @Override
 144         public String doCheckout () {
 145                 // Are the beans set?
 146                 if (null == this.basketController) {
 147                         // Abort here
 148                         throw new NullPointerException("basketController is null"); //NOI18N
 149                 } else if (null == this.customerController) {
 150                         // Abort here
 151                         throw new NullPointerException("customer is null"); //NOI18N
 152                 }
 153
 154                 // Are at least the required fields set?
 155                 if (!this.contactController.isRequiredPersonalDataSet()) {
 156                         // Not set, should not happen
 157                         return "checkout2"; //NOI18N
 158                 } else if (this.basketController.isEmpty()) {
 159                         // Nothing to order
 160                         return "empty_basket"; //NOI18N
 161                 }
 162
 163                 // Create customer instance
 164                 this.setCustomer(this.customerController.createCustomerInstance());
 165
 166                 // Get ordered list
 167                 List<AddableBasketItem> list = this.basketController.allItems();
 168
 169                 // Construct container
 170                 WrapableCheckout wrapper = new CheckoutWrapper();
 171                 wrapper.setCustomer(this.beanHelper.getCustomer());
 172                 wrapper.setList(list);
 173
 174                 try {
 175                         // Construct object message
 176                         this.message.setObject(wrapper);
 177
 178                         // Send message
 179                         this.messageProducer.send(this.message);
 180                 } catch (final JMSException ex) {
 181                         // @TODO: Log exception?
 182                         // Not working
 183                         return "jms_failed"; //NOI18N
 184                 }
 185
 186                 // Fire event
 187                 this.checkoutCompletedEvent.fire(new ShopCheckoutCompletedEvent(wrapper));
 188
 189                 // All fine
 190                 return "checkout_done"; //NOI18N
 191         }
 192
 193         /**
 194          * Initialization of this bean
 195          */
 196         @PostConstruct
 197         public void init () {
 198                 try {
 199                         // Get initial context
 200                         Context context = new InitialContext();
 201
 202                         // Get factory from JMS resource
 203                         QueueConnectionFactory connectionFactory = (QueueConnectionFactory) context.lookup("jms/shopConnectionFactory"); //NOI18N
 204
 205                         // Lookup queue
 206                         this.queue = (Queue) context.lookup("jms/shopCheckoutQueue"); //NOI18N
 207
 208                         // Create connection
 209                         this.connection = connectionFactory.createConnection();
 210
 211                         // Init session instance
 212                         this.session = this.connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
 213
 214                         // And message producer
 215                         this.messageProducer = this.session.createProducer(this.queue);
 216
 217                         // Finally the message instance itself
 218                         this.message = this.session.createObjectMessage();
 219                 } catch (final NamingException | JMSException e) {
 220                         // Continued to throw
 221                         throw new FacesException(e);
 222                 }
 223         }
 224
 225 }