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.jcontacts.exceptions.ContactAlreadyAddedException;
  29 import org.mxchange.jcustomercore.exceptions.CustomerAlreadyRegisteredException;
  30 import org.mxchange.jcustomercore.model.customer.Customer;
  31 import org.mxchange.jcustomercore.utils.CustomerUtils;
  32 import org.mxchange.pizzaaplication.database.BasePizzaDatabaseBean;
  33
  34 /**
  35  * A stateless administrative customer session bean (EJB)
  36  * <p>
  37  * @author Roland Haeder<roland@mxchange.org>
  38  */
  39 @Stateless (name = "admincustomer", description = "Administrative bean handling customer data")
  40 public class PizzaAdminCustomerSessionBean extends BasePizzaDatabaseBean implements PizzaAdminCustomerSessionBeanRemote {
  41
  42         /**
  43          * Serial number
  44          */
  45         private static final long serialVersionUID = 19_845_893_648_175_427L;
  46
  47         /**
  48          * Contact instance
  49          */
  50         @EJB
  51         private ContactSessionBeanRemote contactBean;
  52
  53         /**
  54          * General customer bean
  55          */
  56         @EJB
  57         private RateCalcCustomerSessionBeanRemote customerBean;
  58
  59         @Override
  60         public Customer addCustomer (final Customer customer) throws CustomerAlreadyRegisteredException, ContactAlreadyAddedException {
  61                 // Trace message
  62                 this.getLoggerBeanLocal().logTrace(MessageFormat.format("addCustomer: customer={0} - CALLED!", customer)); //NOI18N
  63
  64                 // Paramerter customer should be valid
  65                 if (null == customer) {
  66                         // Throw NPE
  67                         throw new NullPointerException("customer is null"); //NOI18N
  68                 } else if ((customer.getCustomerId() instanceof Long) && (customer.getCustomerId() > 0)) {
  69                         // Not allowed
  70                         throw new IllegalArgumentException(MessageFormat.format("customer.customerId={0} is not allowed here.", customer.getCustomerId())); //NOI18N
  71                 } else if (customer.getCustomerContact() == null) {
  72                         // Throw NPE again
  73                         throw new NullPointerException("customer.customerContact is null"); //NOI18N
  74                 } else if (customer.getCustomerNumber() == null) {
  75                         // Customer numbers should be set, at least generate one with CustomerUtils
  76                         throw new NullPointerException("customer.customerNumber is null"); //NOI18N
  77                 } else if (customer.getCustomerNumber().length() < RateCalcAdminCustomerSessionBeanRemote.CUSTOMER_NUMBER_LENGTH) {
  78                         // To short number
  79                         throw new IllegalArgumentException(MessageFormat.format("customer.customerNumber.length={0} is shorter than expected: {1}", customer.getCustomerNumber().length(), RateCalcAdminCustomerSessionBeanRemote.CUSTOMER_NUMBER_LENGTH)); //NOI18N
  80                 } else if (this.customerBean.isReqistered(customer)) {
  81                         // Throw exception
  82                         throw new CustomerAlreadyRegisteredException(customer);
  83                 }
  84
  85                 // Get contact instance
  86                 Contact contact = customer.getCustomerContact();
  87                 Contact updatedContact = this.contactBean.lookupContact(contact);
  88
  89                 // Debug message
  90                 this.getLoggerBeanLocal().logDebug(MessageFormat.format("addCustomer: contact={0},updatedContact={1}", contact, updatedContact));
  91
  92                 // Is a customer found?
  93                 if (updatedContact instanceof Contact) {
  94                         // Don't double-create
  95                         throw new ContactAlreadyAddedException(contact);
  96                 }
  97
  98                 // Set created timestamp
  99                 contact.setContactCreated(new GregorianCalendar());
 100
 101                 // Set all "created" timestamps
 102                 this.setAllContactPhoneEntriesCreated(contact);
 103
 104                 // Persist the customer
 105                 this.getEntityManager().persist(customer);
 106
 107                 // Flush it to get id number set
 108                 this.getEntityManager().flush();
 109
 110                 // Trace message
 111                 this.getLoggerBeanLocal().logTrace(MessageFormat.format("addCustomer: customer.customerId={0} - EXIT!", customer.getCustomerId())); //NOI18N
 112
 113                 // Return updated instance
 114                 return customer;
 115         }
 116
 117         @Override
 118         @SuppressWarnings ("unchecked")
 119         public List<Customer> allCustomers () {
 120                 // Trace message
 121                 this.getLoggerBeanLocal().logTrace("allCustomers: CALLED!"); //NOI18N
 122
 123                 // Get named query
 124                 Query query = this.getEntityManager().createNamedQuery("AllCustomers", List.class); //NOI18N
 125
 126                 // Get result
 127                 List<Customer> customers = query.getResultList();
 128
 129                 // Trace message
 130                 this.getLoggerBeanLocal().logTrace(MessageFormat.format("allCustomers: customers.size()={0} - EXIT!", customers.size())); //NOI18N
 131
 132                 // Return full list
 133                 return customers;
 134         }
 135
 136         @Override
 137         public String createCustomerNumber () {
 138                 // Trace message
 139                 this.getLoggerBeanLocal().logTrace("createCustomerNumber: CALLED!"); //NOI18N
 140
 141                 // Init named query
 142                 Query query = this.getEntityManager().createNamedQuery("SearchCustomerByNumber", Customer.class); //NOI18N
 143
 144                 // Default is not found
 145                 String customerNumber = null;
 146
 147                 // Search until a free number was found
 148                 while (null == customerNumber) {
 149                         // Create new number
 150                         String cn = CustomerUtils.generateCustomerNumber(PizzaAdminCustomerSessionBeanRemote.CUSTOMER_NUMBER_LENGTH, PizzaAdminCustomerSessionBeanRemote.CUSTOMER_NUMBER_BLOCK_SIZE, PizzaAdminCustomerSessionBeanRemote.CUSTOMER_NUMBER_SEPARATOR);
 151
 152                         // Debug message#
 153                         this.getLoggerBeanLocal().logDebug(MessageFormat.format("createCustomerNumber: cn={0}", cn)); //NOI18N
 154
 155                         // Set the generated number as param
 156                         query.setParameter("customerNumber", cn); //NOI18N
 157
 158                         // Try to find it
 159                         try {
 160                                 // Get a single result
 161                                 Customer customer = (Customer) query.getSingleResult();
 162
 163                                 // Debug message
 164                                 this.getLoggerBeanLocal().logDebug(MessageFormat.format("createCustomerNumber: Found customer={0} with customerNumber={1} - continuing ...", customer, customerNumber)); //NOI18N
 165                         } catch (final NoResultException ex) {
 166                                 // Debug message
 167                                 this.getLoggerBeanLocal().logDebug(MessageFormat.format("createCustomerNumber: Found free number {0}, exception message:{1}", cn, ex.getMessage())); //NOI18N
 168
 169                                 // Not found, okay
 170                                 customerNumber = cn;
 171                         }
 172                 }
 173
 174                 // Trace message
 175                 this.getLoggerBeanLocal().logTrace(MessageFormat.format("createCustomerNumber: customerNumber={0} - EXIT!", customerNumber)); //NOI18N
 176
 177                 // Return generated number
 178                 return customerNumber;
 179         }
 180
 181 }