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1 package org.demo;
2 import java.util.Collection  ;
3 import java.util.List ;
4 import javax.annotation.Resource;
5 import javax.faces.application.FacesMessage;
6 import javax.faces.context.FacesContext;
7 import javax.faces.model.SelectItem;
8 import javax.persistence.EntityManager;
9 import javax.persistence.EntityManagerFactory;
10 import javax.persistence.PersistenceUnit;
11 import javax.persistence.Query;
12 import javax.transaction.UserTransaction ;
13
14 public class CustomerController {
15
16 private Customer customer;
17
18 @Resource
19 private UserTransaction utx;
20
21 @PersistenceUnit(unitName = "SjsasJSFTestPU")
22 private EntityManagerFactory emf;
23
24 private EntityManager getEntityManager() {
25 return emf.createEntityManager();
26 }
27
28 private int batchSize = 20;
29
30 private int firstItem = 0;
31
32 public String destroyFromDiscountCode() {
33 Object id = customer.getDiscountCode().getDiscountCode();
34 destroy();
35 EntityManager em = getEntityManager();
36 getDiscountCodeController().setDiscountCode(em.find(DiscountCode.class, id));
37 em.close();
38 return "discountCode_detail";
39 }
40
41 private DiscountCodeController getDiscountCodeController() {
42 return (DiscountCodeController) FacesContext.getCurrentInstance().
43 getExternalContext().getSessionMap().get("discountCode");
44 }
45
46 public String createFromDiscountCodeSetup() {
47 this.customer = new Customer();
48 String param = FacesContext.getCurrentInstance().getExternalContext().getRequestParameterMap().get("relatedId");
49 Integer id = new Integer (param);
50 EntityManager em = getEntityManager();
51 customer.setDiscountCode(em.find(DiscountCode.class, id));
52 em.close();
53 return "customer_create";
54 }
55
56 public String createFromDiscountCode() {
57 create();
58 getDiscountCodeController().setDiscountCode(customer.getDiscountCode());
59 return "discountCode_detail";
60 }
61
62 public String createSetup() {
63 this.customer = new Customer();
64 return "customer_create";
65 }
66
67 public String create() {
68 EntityManager em = getEntityManager();
69 try {
70 utx.begin();
71 em.persist(customer);
72
73 DiscountCode discountCode=customer.getDiscountCode();
75 if (discountCode != null) {
76 discountCode = em.merge(discountCode);
77 discountCode.getCustomer().add(customer);
78 discountCode=em.merge(discountCode);
79 }
80
81 utx.commit();
82 addSuccessMessage("Customer was successfully created.");
83 } catch (Exception ex) {
84 try {
85 addErrorMessage(ex.getLocalizedMessage());
86 utx.rollback();
87 } catch (Exception e) {
88 addErrorMessage(e.getLocalizedMessage());
89 }
90 }
91 em.close();
92 return "customer_list";
93 }
94
95 public String detailSetup() {
96 setCustomerFromRequestParam();
97 return "customer_detail";
98 }
99
100 public String editSetup() {
101 setCustomerFromRequestParam();
102 return "customer_edit";
103 }
104
105 public String edit() {
106 EntityManager em = getEntityManager();
107 try {
108 utx.begin();
109
110 DiscountCode discountCodeOld = em.find(Customer.class, customer.getCustomerId()).getDiscountCode();
111 customer = em.merge(customer);
112
113 DiscountCode discountCodeNew=customer.getDiscountCode();
115 if(discountCodeNew != null) {
116 discountCodeNew.getCustomer().add(customer);
117 discountCodeNew=em.merge(discountCodeNew);
118 }
119 if(discountCodeOld != null) {
120 discountCodeOld.getCustomer().remove(customer);
121 discountCodeOld=em.merge(discountCodeOld);
122 }
123 utx.commit();
124 addSuccessMessage("Customer was successfully updated.");
125 } catch (Exception ex) {
126 try {
127 addErrorMessage(ex.getLocalizedMessage());
128 utx.rollback();
129 } catch (Exception e) {
130 addErrorMessage(e.getLocalizedMessage());
131 }
132 }
133 em.close();
134 return "customer_list";
135 }
136
137 public String destroy() {
138 EntityManager em = getEntityManager();
139 try {
140 utx.begin();
141 Customer customer = getCustomerFromRequestParam();
142 customer = em.merge(customer);
143
144 DiscountCode discountCode = customer.getDiscountCode();
146 if (discountCode != null) {
147 discountCode = em.merge(discountCode);
148 discountCode.getCustomer().remove(customer);
149 discountCode=em.merge(discountCode);
150 }
151
152 em.remove(customer);
153 utx.commit();
154 addSuccessMessage("Customer was successfully deleted.");
155 } catch (Exception ex) {
156 try {
157 addErrorMessage(ex.getLocalizedMessage());
158 utx.rollback();
159 } catch (Exception e) {
160 addErrorMessage(e.getLocalizedMessage());
161 }
162 }
163 em.close();
164 return "customer_list";
165 }
166
167 public Customer getCustomerFromRequestParam() {
168 EntityManager em = getEntityManager();
169 String param = FacesContext.getCurrentInstance().getExternalContext().getRequestParameterMap().get("customerId");
170 Integer id = new Integer (param);
171 Customer o = em.find(Customer.class, id);
172 em.close();
173 return o;
174 }
175
176 public void setCustomerFromRequestParam() {
177 Customer customer = getCustomerFromRequestParam();
178 setCustomer(customer);
179 }
180
181 public Collection getCustomers() {
182 EntityManager em = getEntityManager();
183 Query q = em.createQuery("select object(o) from Customer as o");
184 q.setMaxResults(batchSize);
185 q.setFirstResult(firstItem);
186 Collection c = q.getResultList();
187 em.close();
188 return c;
189 }
190
191 public Customer getCustomer() {
192 return customer;
193 }
194
195 public void setCustomer(Customer customer) {
196 this.customer = customer;
197 }
198
199 public static void addErrorMessage(String msg) {
200 FacesMessage facesMsg = new FacesMessage(FacesMessage.SEVERITY_ERROR, msg, msg);
201 FacesContext fc = FacesContext.getCurrentInstance();
202 fc.addMessage(null, facesMsg);
203 }
204
205 public static void addSuccessMessage(String msg) {
206 FacesMessage facesMsg = new FacesMessage(FacesMessage.SEVERITY_INFO, msg, msg);
207 FacesContext fc = FacesContext.getCurrentInstance();
208 fc.addMessage("successInfo", facesMsg);
209 }
210
211 public Customer findCustomer(Integer id) {
212 EntityManager em = getEntityManager();
213 Customer o = (Customer) em.find(Customer.class, id);
214 em.close();
215 return o;
216 }
217
218 public javax.faces.model.SelectItem[] getDiscountCodes() {
219 EntityManager em = getEntityManager();
220 List <DiscountCode> l = (List <DiscountCode>) em.createQuery("select o from DiscountCode as o").getResultList();
221 em.close();
222 SelectItem select[] = new SelectItem[l.size()];
223 int i = 0;
224 for(DiscountCode x : l) {
225 select[i++] = new SelectItem(x);
226 }
227 return select;
228 }
229
230 public int getItemCount() {
231 EntityManager em = getEntityManager();
232 int count = ((Long ) em.createQuery("select count(o) from Customer as o").getSingleResult()).intValue();em.close();
233 return count;
234 }
235
236 public int getFirstItem() {
237 return firstItem;
238 }
239
240 public int getLastItem() {
241 int size = getItemCount();
242 return firstItem + batchSize > size ? size : firstItem + batchSize;
243 }
244
245 public int getBatchSize() {
246 return batchSize;
247 }
248
249 public String next() {
250 if (firstItem + batchSize < getItemCount()) {
251 firstItem += batchSize;
252 }
253 return "customer_list";
254 }
255
256 public String prev() {
257 firstItem -= batchSize;
258 if (firstItem < 0) {
259 firstItem = 0;
260 }
261 return "customer_list";
262 }
263 }
264 |
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