src/java/org/mxchange/pizzaapplication/model/customer/PizzaAdminCustomerSessionBean.java

   1 /*
   2  * Copyright (C) 2016 Roland Haeder
   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.customer;
  18
  19 import java.text.MessageFormat;
  20 import java.util.GregorianCalendar;
  21 import java.util.List;
  22 import javax.ejb.EJB;
  23 import javax.ejb.Stateless;
  24 import javax.persistence.NoResultException;
  25 import javax.persistence.Query;
  26 import org.mxchange.jcontacts.contact.Contact;
  27 import org.mxchange.jcontacts.contact.ContactSessionBeanRemote;
  28 import org.mxchange.jcustomercore.model.customer.Customer;
  29 import org.mxchange.jcustomercore.utils.CustomerUtils;
  30 import org.mxchange.pizzaaplication.database.BasePizzaDatabaseBean;
  31
  32 /**
  33  * A stateless administrative customer session bean (EJB)
  34  * <p>
  35  * @author Roland Haeder<roland@mxchange.org>
  36  */
  37 @Stateless (name = "admincustomer", description = "Administrative bean handling customer data")
  38 public class PizzaAdminCustomerSessionBean extends BasePizzaDatabaseBean implements PizzaAdminCustomerSessionBeanRemote {
  39
  40         /**
  41          * Serial number
  42          */
  43         private static final long serialVersionUID = 19_845_893_648_175_427L;
  44
  45         /**
  46          * Contact instance
  47          */
  48         @EJB
  49         private ContactSessionBeanRemote customerBean;
  50
  51         @Override
  52         public Customer addCustomer (final Customer customer) {
  53                 // Trace message
  54                 this.getLoggerBeanLocal().logTrace(MessageFormat.format("addCustomer: customer={0} - CALLED!", customer)); //NOI18N
  55
  56                 // Paramerter customer should be valid
  57                 if (null == customer) {
  58                         // Throw NPE
  59                         throw new NullPointerException("customer is null"); //NOI18N
  60                 } else if (customer.getCustomerId() > 0) {
  61                         // Not allowed
  62                         throw new IllegalArgumentException(MessageFormat.format("customer.customerId={0} is not allowed here.", customer.getCustomerId())); //NOI18N
  63                 } else if (customer.getCustomerContact() == null) {
  64                         // Throw NPE again
  65                         throw new NullPointerException("customer.customerContact is null"); //NOI18N
  66                 } else if (customer.getCustomerNumber() == null) {
  67                         // Customer numbers should be set, at least generate one with CustomerUtils
  68                         throw new NullPointerException("customer.customerNumber is null"); //NOI18N
  69                 } else if (customer.getCustomerNumber().length() < RateCalcAdminCustomerSessionBeanRemote.CUSTOMER_NUMBER_LENGTH) {
  70                         // To short number
  71                         throw new IllegalArgumentException(MessageFormat.format("customer.customerNumber.length={0} is shorter than expected: {1}", customer.getCustomerNumber().length(), RateCalcAdminCustomerSessionBeanRemote.CUSTOMER_NUMBER_LENGTH)); //NOI18N
  72                 }
  73
  74                 // Get contact instance
  75                 Contact contact = customer.getCustomerContact();
  76                 Contact updatedContact = null;
  77
  78                 // Is a customer found?
  79                 if (this.customerBean.isContactFound(contact)) {
  80                         // Yes, then get updated version
  81                         updatedContact = this.customerBean.updateContactData(contact);
  82
  83                         // Remove it from customer so it won't get persisted again
  84                         customer.setCustomerContact(null);
  85                 }
  86
  87                 // Set created timestamp
  88                 customer.setCustomerCreated(new GregorianCalendar());
  89
  90                 // Persist the customer
  91                 this.getEntityManager().persist(customer);
  92
  93                 // Flush it to get id number set
  94                 this.getEntityManager().flush();
  95
  96                 // Has the contact being updated?
  97                 if (updatedContact instanceof Contact) {
  98                         // Set it again
  99                         customer.setCustomerContact(updatedContact);
 100                 }
 101
 102                 // Trace message
 103                 this.getLoggerBeanLocal().logTrace(MessageFormat.format("addCustomer: customer.customerId={0} - EXIT!", customer.getCustomerId())); //NOI18N
 104
 105                 // Return updated instance
 106                 return customer;
 107         }
 108
 109         @Override
 110         @SuppressWarnings ("unchecked")
 111         public List<Customer> allCustomers () {
 112                 // Trace message
 113                 this.getLoggerBeanLocal().logTrace("allCustomers: CALLED!"); //NOI18N
 114
 115                 // Get named query
 116                 Query query = this.getEntityManager().createNamedQuery("AllCustomers", List.class); //NOI18N
 117
 118                 // Get result
 119                 List<Customer> customers = query.getResultList();
 120
 121                 // Trace message
 122                 this.getLoggerBeanLocal().logTrace(MessageFormat.format("allCustomers: customers.size()={0} - EXIT!", customers.size())); //NOI18N
 123
 124                 // Return full list
 125                 return customers;
 126         }
 127
 128         @Override
 129         public String createCustomerNumber () {
 130                 // Trace message
 131                 this.getLoggerBeanLocal().logTrace("createCustomerNumber: CALLED!"); //NOI18N
 132
 133                 // Init named query
 134                 Query query = this.getEntityManager().createNamedQuery("SearchCustomerByNumber", Customer.class); //NOI18N
 135
 136                 // Default is not found
 137                 String customerNumber = null;
 138
 139                 // Search until a free number was found
 140                 while (null == customerNumber) {
 141                         // Create new number
 142                         String cn = CustomerUtils.generateCustomerNumber(PizzaAdminCustomerSessionBeanRemote.CUSTOMER_NUMBER_LENGTH, PizzaAdminCustomerSessionBeanRemote.CUSTOMER_NUMBER_BLOCK_SIZE, PizzaAdminCustomerSessionBeanRemote.CUSTOMER_NUMBER_SEPARATOR);
 143
 144                         // Debug message#
 145                         this.getLoggerBeanLocal().logDebug(MessageFormat.format("createCustomerNumber: cn={0}", cn)); //NOI18N
 146
 147                         // Set the generated number as param
 148                         query.setParameter("customerNumber", cn); //NOI18N
 149
 150                         // Try to find it
 151                         try {
 152                                 // Get a single result
 153                                 Customer customer = (Customer) query.getSingleResult();
 154
 155                                 // Debug message
 156                                 this.getLoggerBeanLocal().logDebug(MessageFormat.format("createCustomerNumber: Found customer={0} with customerNumber={1} - continuing ...", customer, customerNumber)); //NOI18N
 157                         } catch (final NoResultException ex) {
 158                                 // Debug message
 159                                 this.getLoggerBeanLocal().logDebug(MessageFormat.format("createCustomerNumber: Found free number {0}, exception message:{1}", cn, ex.getMessage())); //NOI18N
 160
 161                                 // Not found, okay
 162                                 customerNumber = cn;
 163                         }
 164                 }
 165
 166                 // Trace message
 167                 this.getLoggerBeanLocal().logTrace(MessageFormat.format("createCustomerNumber: customerNumber={0} - EXIT!", customerNumber)); //NOI18N
 168
 169                 // Return generated number
 170                 return customerNumber;
 171         }
 172
 173 }