src/java/org/mxchange/pizzaapplication/model/customer/PizzaCustomerSessionBean.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.customer;
  18
  19 import java.text.MessageFormat;
  20 import javax.ejb.Stateless;
  21 import javax.persistence.NoResultException;
  22 import javax.persistence.Query;
  23 import org.mxchange.jcustomercore.exceptions.CustomerAlreadyRegisteredException;
  24 import org.mxchange.jcustomercore.exceptions.CustomerNotFoundException;
  25 import org.mxchange.jcustomercore.model.customer.Customer;
  26 import org.mxchange.pizzaaplication.enterprise.BasePizzaEnterpriseBean;
  27
  28 /**
  29  * A stateless customer session-scoped bean (EJB)
  30  * <p>
  31  * @author Roland Häder<roland@mxchange.org>
  32  */
  33 @Stateless (name = "customer", description = "A bean handling customer data")
  34 public class PizzaCustomerSessionBean extends BasePizzaEnterpriseBean implements PizzaCustomerSessionBeanRemote {
  35
  36         /**
  37          * Serial number
  38          */
  39         private static final long serialVersionUID = 15_624_759_104_372L;
  40
  41         @Override
  42         public Customer fillCustomerData (final Customer customer) {
  43                 throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates. //NOI18N
  44         }
  45
  46         @Override
  47         public Customer findCustomerById (final Long customerId) throws CustomerNotFoundException {
  48                 // Trace message
  49                 this.getLoggerBeanLocal().logTrace(MessageFormat.format("findCustomerById: customerId={0} - CALLED!", customerId)); //NOI18N
  50
  51                 // The parameter must be valid
  52                 if (null == customerId) {
  53                         // Throw NPE
  54                         throw new NullPointerException("customerId is null"); //NOI18N
  55                 } else if (customerId < 1) {
  56                         // Invalid id number
  57                         throw new IllegalArgumentException(MessageFormat.format("customerId={0} - is not valid", customerId)); //NOI18N
  58                 }
  59
  60                 // Init instance
  61                 Customer customer;
  62
  63                 // Get named query
  64                 Query query = this.getEntityManager().createNamedQuery("SearchCustomerById", Customer.class); //NOI18N
  65
  66                 // Set customer id
  67                 query.setParameter("customerId", customerId); //NOI18N
  68
  69                 // Try to find it
  70                 try {
  71                         // Get single result
  72                         customer = (Customer) query.getSingleResult();
  73
  74                         // Debug message (success)
  75                         this.getLoggerBeanLocal().logDebug(MessageFormat.format("findCustomerById: Found customer={0} with customerId={1}", customer, customerId)); //NOI18N
  76                 } catch (final NoResultException ex) {
  77                         // Not found, throw again
  78                         throw new CustomerNotFoundException(customerId, ex);
  79                 }
  80
  81                 // Trace message
  82                 this.getLoggerBeanLocal().logTrace(MessageFormat.format("findCustomerById; customer={0} - EXIT!", customer)); //NOI18N
  83
  84                 // Return found instance
  85                 return customer;
  86         }
  87
  88         @Override
  89         public boolean isRegistered (final Customer customer) {
  90                 // Trace message
  91                 this.getLoggerBeanLocal().logTrace(MessageFormat.format("isRegistered: customer={0} - CALLED!", customer)); //NOI18N
  92
  93                 // Paramerter customer should be valid
  94                 if (null == customer) {
  95                         // Throw NPE
  96                         throw new NullPointerException("customer is null"); //NOI18N
  97                 } else if ((customer.getCustomerId() instanceof Long) && (customer.getCustomerId() > 0)) {
  98                         // Not allowed
  99                         throw new IllegalArgumentException(MessageFormat.format("customer.customerId={0} is not allowed here.", customer.getCustomerId())); //NOI18N
 100                 } else if (customer.getCustomerContact() == null) {
 101                         // Throw NPE again
 102                         throw new NullPointerException("customer.customerContact is null"); //NOI18N
 103                 } else if (customer.getCustomerNumber() == null) {
 104                         // Customer numbers should be set, at least generate one with CustomerUtils
 105                         throw new NullPointerException("customer.customerNumber is null"); //NOI18N
 106                 } else if (customer.getCustomerNumber().length() < PizzaAdminCustomerSessionBeanRemote.CUSTOMER_NUMBER_LENGTH) {
 107                         // To short number
 108                         throw new IllegalArgumentException(MessageFormat.format("customer.customerNumber.length={0} is shorter than expected: {1}", customer.getCustomerNumber().length(), PizzaAdminCustomerSessionBeanRemote.CUSTOMER_NUMBER_LENGTH)); //NOI18N
 109                 }
 110
 111                 // Init query instance
 112                 Query query = this.getEntityManager().createNamedQuery("SearchCustomerByNumber", Customer.class); //NOI18N
 113
 114                 // Set parameter
 115                 query.setParameter("customerNumber", customer.getCustomerNumber()); //NOI18N
 116
 117                 // Default is not found
 118                 boolean isFound = false;
 119
 120                 // Try to find it
 121                 try {
 122                         Customer dummy = (Customer) query.getSingleResult();
 123
 124                         // Debug message
 125                         this.getLoggerBeanLocal().logDebug(MessageFormat.format("isRegistered: Customer {0} has number{1} and contact {2}", dummy.getCustomerId(), customer.getCustomerNumber(), customer.getCustomerContact().getContactId())); //NOI18N
 126
 127                         // Mark as found
 128                         isFound = true;
 129                 } catch (final NoResultException ex) {
 130                         // Not found
 131                         this.getLoggerBeanLocal().logDebug(MessageFormat.format("isRegistered: Not found: {0}", ex.getMessage())); //NOI18N
 132                 }
 133
 134                 // Trace message
 135                 this.getLoggerBeanLocal().logTrace(MessageFormat.format("isRegistered: isFound={0} - EXIT!", isFound)); //NOI18N
 136
 137                 // Return it
 138                 return isFound;
 139         }
 140
 141         @Override
 142         public Customer registerCustomer (final Customer customer) throws CustomerAlreadyRegisteredException {
 143                 throw new UnsupportedOperationException("Registration by guests is not supported with Pizza application."); //NOI18N
 144         }
 145
 146 }