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