src/java/org/mxchange/pizzaapplication/model/basket/PizzaBasketSessionBean.java

   1 /*
   2  * Copyright (C) 2016 - 2024 Free Software Foundation
   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.model.basket;
  18
  19 import java.text.MessageFormat;
  20 import java.util.GregorianCalendar;
  21 import java.util.List;
  22 import javax.ejb.Stateless;
  23 import javax.persistence.EntityExistsException;
  24 import org.mxchange.jcustomercore.model.customer.Customer;
  25 import org.mxchange.jshopcore.model.basket.AddableBasketItem;
  26 import org.mxchange.jshopcore.model.basket.Basket;
  27 import org.mxchange.jshopcore.model.basket.BasketSessionBeanRemote;
  28 import org.mxchange.jshopcore.model.basket.ShopBasket;
  29 import org.mxchange.jshopcore.model.customer.ShopCustomerUtils;
  30 import org.mxchange.jshopcore.model.order.Orderable;
  31 import org.mxchange.jshopcore.model.order.ShopOrder;
  32 import org.mxchange.pizzaaplication.enterprise.BasePizzaEnterpriseBean;
  33
  34 /**
  35  * A basket for orderable items
  36  * <p>
  37  * @author Roland Häder<roland@mxchange.org>
  38  */
  39 @Stateless (name = "basket", description = "A bean handling persisting baskets of logged-in customers")
  40 public class PizzaBasketSessionBean extends BasePizzaEnterpriseBean implements BasketSessionBeanRemote {
  41
  42         /**
  43          * Serial number
  44          */
  45         private static final long serialVersionUID = 4_384_123_923_163_957L;
  46
  47         /**
  48          * Default constructor
  49          */
  50         public PizzaBasketSessionBean () {
  51                 // Call super constructor
  52                 super();
  53         }
  54
  55         @Override
  56         public void clear () {
  57                 // @TODO Nothing done so far
  58         }
  59
  60         @Override
  61         public Basket<AddableBasketItem> getCurrentBasket () {
  62                 // Trace message
  63                 this.getLoggerBeanLocal().logTrace("getCurrentBasket: CALLED!!"); //NOI18N
  64
  65                 // @TODO For now this method returns only an empty basked until they are persitable
  66                 Basket<AddableBasketItem> basket = new ShopBasket();
  67
  68                 // Trace message
  69                 this.getLoggerBeanLocal().logTrace(MessageFormat.format("getCurrentBasket: basket.size()={0} EXIT!!", basket.size())); //NOI18N
  70
  71                 // Return it
  72                 return basket;
  73         }
  74
  75         @Override
  76         public String registerItems (final Customer customer, final List<AddableBasketItem> orderedItems) {
  77                 // Trace message
  78                 this.getLoggerBeanLocal().logTrace(MessageFormat.format("registerItems: customer={0},itemList={1} - CALLED!", customer, orderedItems)); //NOI18N
  79
  80                 // Init variable for access key
  81                 String accessKey;
  82
  83                 // customer/itemList should not be null
  84                 if (null == customer) {
  85                         // Abort here
  86                         throw new NullPointerException("customer is null"); //NOI18N
  87                 } else if (null == orderedItems) {
  88                         // Abort here
  89                         throw new NullPointerException("itemList is null"); //NOI18N
  90                 } else if (customer.getCustomerId() == null) {
  91                         // null pointer found
  92                         throw new NullPointerException(MessageFormat.format("customer {0} id is null", customer)); //NOI18N
  93                 } else if (customer.getCustomerId() == 0) {
  94                         // id not set
  95                         throw new IllegalArgumentException(MessageFormat.format("customer {0} has no id set", customer)); //NOI18N
  96                 } else if (orderedItems.isEmpty()) {
  97                         // Empty list
  98                         throw new IllegalArgumentException("item list is empty"); //NOI18N
  99                 }
 100
 101                 // First try to register the order (to get an id number from it)
 102                 try {
 103                         // Generate access key
 104                         accessKey = ShopCustomerUtils.generateAccessKey(this.getEntityManager(), customer);
 105
 106                         // Debug message
 107                         this.getLoggerBeanLocal().logDebug(MessageFormat.format("registerItems: accessKey={0}", accessKey)); //NOI18N
 108
 109                         // Create order object
 110                         Orderable order = new ShopOrder();
 111                         order.setCustomer(customer);
 112                         order.setAccessKey(accessKey);
 113                         order.setOrderedItems(orderedItems);
 114                         order.setOrderCreated(new GregorianCalendar());
 115
 116                         // Persist it
 117                         this.getEntityManager().persist(order);
 118                 } catch (final EntityExistsException ex) {
 119                         // Log exception
 120                         this.getLoggerBeanLocal().logException(ex);
 121
 122                         /*
 123                          * Don't return an access key as the exception should never be
 124                          * thrown.
 125                          */
 126                         accessKey = null;
 127                 }
 128
 129                 // Trace message
 130                 this.getLoggerBeanLocal().logTrace(MessageFormat.format("registerItems: accessKey={0} - EXIT!", accessKey)); //NOI18N
 131
 132                 // Return it
 133                 return accessKey;
 134         }
 135
 136 }