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[pizzaservice-ejb.git] / 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.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 {
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                 // Is a customer found?
89                 if (updatedContact instanceof Contact) {
90                         // Set all entries
91                         contact.setContactId(updatedContact.getContactId());
92                         this.setAllContactPhoneEntries(updatedContact, contact);
93
94                         // Yes, then get updated version
95                         updatedContact = this.contactBean.updateContactData(contact);
96
97                         // Remove it from customer so it won't get persisted again
98                         customer.setCustomerContact(null);
99                 }
100
101                 // Set created timestamp(s)
102                 customer.setCustomerCreated(new GregorianCalendar());
103                 this.setAllContactPhoneEntriesCreated(contact);
104
105                 // Persist the customer
106                 this.getEntityManager().persist(customer);
107
108                 // Flush it to get id number set
109                 this.getEntityManager().flush();
110
111                 // Has the contact being updated?
112                 if (updatedContact instanceof Contact) {
113                         // Set it again
114                         customer.setCustomerContact(updatedContact);
115                 }
116
117                 // Trace message
118                 this.getLoggerBeanLocal().logTrace(MessageFormat.format("addCustomer: customer.customerId={0} - EXIT!", customer.getCustomerId())); //NOI18N
119
120                 // Return updated instance
121                 return customer;
122         }
123
124         @Override
125         @SuppressWarnings ("unchecked")
126         public List<Customer> allCustomers () {
127                 // Trace message
128                 this.getLoggerBeanLocal().logTrace("allCustomers: CALLED!"); //NOI18N
129
130                 // Get named query
131                 Query query = this.getEntityManager().createNamedQuery("AllCustomers", List.class); //NOI18N
132
133                 // Get result
134                 List<Customer> customers = query.getResultList();
135
136                 // Trace message
137                 this.getLoggerBeanLocal().logTrace(MessageFormat.format("allCustomers: customers.size()={0} - EXIT!", customers.size())); //NOI18N
138
139                 // Return full list
140                 return customers;
141         }
142
143         @Override
144         public String createCustomerNumber () {
145                 // Trace message
146                 this.getLoggerBeanLocal().logTrace("createCustomerNumber: CALLED!"); //NOI18N
147
148                 // Init named query
149                 Query query = this.getEntityManager().createNamedQuery("SearchCustomerByNumber", Customer.class); //NOI18N
150
151                 // Default is not found
152                 String customerNumber = null;
153
154                 // Search until a free number was found
155                 while (null == customerNumber) {
156                         // Create new number
157                         String cn = CustomerUtils.generateCustomerNumber(PizzaAdminCustomerSessionBeanRemote.CUSTOMER_NUMBER_LENGTH, PizzaAdminCustomerSessionBeanRemote.CUSTOMER_NUMBER_BLOCK_SIZE, PizzaAdminCustomerSessionBeanRemote.CUSTOMER_NUMBER_SEPARATOR);
158
159                         // Debug message#
160                         this.getLoggerBeanLocal().logDebug(MessageFormat.format("createCustomerNumber: cn={0}", cn)); //NOI18N
161
162                         // Set the generated number as param
163                         query.setParameter("customerNumber", cn); //NOI18N
164
165                         // Try to find it
166                         try {
167                                 // Get a single result
168                                 Customer customer = (Customer) query.getSingleResult();
169
170                                 // Debug message
171                                 this.getLoggerBeanLocal().logDebug(MessageFormat.format("createCustomerNumber: Found customer={0} with customerNumber={1} - continuing ...", customer, customerNumber)); //NOI18N
172                         } catch (final NoResultException ex) {
173                                 // Debug message
174                                 this.getLoggerBeanLocal().logDebug(MessageFormat.format("createCustomerNumber: Found free number {0}, exception message:{1}", cn, ex.getMessage())); //NOI18N
175
176                                 // Not found, okay
177                                 customerNumber = cn;
178                         }
179                 }
180
181                 // Trace message
182                 this.getLoggerBeanLocal().logTrace(MessageFormat.format("createCustomerNumber: customerNumber={0} - EXIT!", customerNumber)); //NOI18N
183
184                 // Return generated number
185                 return customerNumber;
186         }
187
188 }