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1
26
27 package servlets;
28
29 import java.io.IOException;
30 import java.io.PrintWriter;
31 import java.util.Calendar;
32 import java.util.Vector;
33
34 import javax.naming.Context;
35 import javax.naming.InitialContext;
36 import javax.servlet.ServletException;
37 import javax.servlet.http.HttpServlet;
38 import javax.servlet.http.HttpServletRequest;
39 import javax.servlet.http.HttpServletResponse;
40
41 import com.titan.address.AddressHomeLocal;
42 import com.titan.address.AddressLocal;
43 import com.titan.customer.CreditCardHomeLocal;
44 import com.titan.customer.CreditCardLocal;
45 import com.titan.customer.CustomerHomeLocal;
46 import com.titan.customer.CustomerLocal;
47 import com.titan.customer.Name;
48 import com.titan.phone.PhoneLocal;
49
50
51
52
56 public class ServletTest extends HttpServlet {
57
58
69 public void doGet(HttpServletRequest request, HttpServletResponse response)
70 throws IOException, ServletException {
71
72 boolean ok = true;
73 response.setContentType("text/html");
74 PrintWriter out = response.getWriter();
75
76 out.println("<html>");
77 out.println("<head>");
78 out.println("<title>");
79 out.println("O'Reilly Examples</title>");
80 out.println("<link rel=\"stylesheet\" HREF=\"style.css\" />");
81 out.println("</head>");
82 out.println("<body style=\"background : white; color : black;\">");
83 out.println("<h1>Examples 1:1 Relationships</h1>");
84
85 Context initialContext = null;
86 try {
87 initialContext = new InitialContext();
88 } catch (Exception e) {
89 out.println("<p>ERROR: Cannot get initial context for JNDI: " + e + "</p>");
90 return;
91 }
92
93 out.println("<a HREF=\"index.html\"><b>Back to Menu</b></a>");
94
95
96 out.println("<h2>Example showing CreditCard/Customer relationship</h2>");
97
98 out.println("<p>(ie Setting reference in a one-to-one bidirectional relationship)</p>");
99
100 CustomerHomeLocal customerhome = null;
102 CreditCardHomeLocal cardhome = null;
103 AddressHomeLocal addresshome = null;
104
105 try {
106 customerhome = (CustomerHomeLocal)
107 initialContext.lookup("java:comp/env/ejb/CustomerHomeLocal");
108 cardhome = (CreditCardHomeLocal)
109 initialContext.lookup("java:comp/env/ejb/CreditCardHomeLocal");
110 addresshome = (AddressHomeLocal)
111 initialContext.lookup("java:comp/env/ejb/AddressHomeLocal");
112 } catch (Exception e) {
113 out.println("<p>ERROR: Cannot lookup java:comp/env/ejb/XXHomeLocal: "
114 + e + "</p>");
115 return;
116 }
117
118 out.println("<h3>Creating Customer 'Smith'.</h3>");
119 Integer primaryKey = new Integer(71);
120 CustomerLocal customer = null;
121 try {
122 customer = customerhome.create(primaryKey);
123 } catch (javax.ejb.CreateException ex) {
124 out.println("<p>Cannot create customer: "
125 + ex + "</p>");
126 return;
127 }
128 customer.setName(new Name("Smith", "John"));
129
130 out.println("<h3>Creating CreditCard.</h3>");
131 Calendar now = Calendar.getInstance();
133 CreditCardLocal card = null;
134 try {
135 card = cardhome.create(now.getTime(), "370000000000001", "John Smith", "O'Reilly");
136 } catch (javax.ejb.CreateException ex) {
137 out.println("<p>ERROR: Cannot create creditcard : " + ex + " </p>");
138 return;
139 }
140
141 out.println("<H3>Linking CreditCard and Customer.</H3>");
142 customer.setCreditCard(card);
143
144 out.println("<H3>Testing both directions on relationship:</H3>");
145 String cardname = customer.getCreditCard().getNameOnCard();
146 out.println("customer.getCreditCard().getNameOnCard() = '" + cardname + "'<br>");
147 Name name = card.getCustomer().getName();
148 String custfullname = name.getFirstName() + " " + name.getLastName();
149 out.println("card.getCustomer().getName() = '" + custfullname + "'<br>");
150 if (!cardname.equals(custfullname)) {
151 out.println("<p>ERROR: The name must be the same</p>");
152 ok = false;
153 }
154 out.println("<H3>Content of Tables:</H3>");
155 try {
156 listCustomers(out, customerhome);
157 listCreditcards(out, cardhome);
158 } catch (Exception e) {
159 out.println("<p>ERROR: exception caught = " + e + "</p>");
160 }
161
162 out.println("<H3>Unlink the beans using CreditCard, test Customer side:</H3>");
163 card.setCustomer(null);
164 CreditCardLocal newcardref = customer.getCreditCard();
165 if (newcardref == null) {
166 out.print("<p>Card is properly unlinked from customer bean</p>");
167 } else {
168 out.print("<p>ERROR: Whoops, customer still thinks it has a card !</p>");
169 ok = false;
170 }
171 card.setCustomer(customer);
173
174
175 out.println("<h2>Example Showing Customer/Address Relationship</h2>");
176 out.println("<p>(ie Setting reference in a one-to-one unidirectional relationship)</p>");
177
178 primaryKey = new Integer(71);
180 try {
181 customer = customerhome.findByPrimaryKey(primaryKey);
182 } catch (Exception e) {
183 out.println("<p>ERROR: Exception : " + e + "</p>");
184 return;
185 }
186
187 AddressLocal addr = customer.getHomeAddress();
188 if (addr == null) {
189 out.println("<h3>Address reference is NULL, Creating one and setting in Customer:</h3>");
190 try {
191 addr = addresshome.createAddress("333 North Washington", "Minneapolis", "MN", "55401");
192 } catch (Exception e) {
193 out.println("<p>ERROR: Exception : " + e + "</p>");
194 return;
195 }
196 customer.setHomeAddress(addr);
197 }
198 out.println("<p>Address Info: "
199 + addr.getStreet() + ", "
200 + addr.getCity() + ", "
201 + addr.getState() + ", "
202 + addr.getZip() + "</p>");
203
205 out.println("<H3>Modifying Address through address reference:</H3>");
206 addr.setStreet("445 East Lake Street");
207 addr.setCity("Wayzata");
208 addr.setState("MN");
209 addr.setZip("55432");
210 out.println("<p>Address Info: "
211 + addr.getStreet() + ", "
212 + addr.getCity() + ", "
213 + addr.getState() + ", "
214 + addr.getZip() + "</p>");
215
216 out.print("<H3>Creating New Address and calling setHomeAddress():</H3>");
217 AddressLocal addrold = addr;
218 try {
219 addr = addresshome.createAddress("700 Main Street", "St. Paul", "MN", "55302");
220 } catch (Exception e) {
221 out.println("<p>ERROR: Exception : " + e + "</p>");
222 return;
223 }
224 out.println("<p>Address Info: "
225 + addr.getStreet() + ", "
226 + addr.getCity() + ", "
227 + addr.getState() + ", "
228 + addr.getZip() + "</p>");
229 customer.setHomeAddress(addr);
230
231
233
234 out.print("<H3>Retrieving Address reference from Customer via getHomeAddress():</H3>");
235 addr = customer.getHomeAddress();
236 out.print("<p>Address Info: "
237 + addr.getStreet() + ", "
238 + addr.getCity() + ", "
239 + addr.getState() + ", "
240 + addr.getZip() + "</p>");
241
242 out.print("<H3>Content of Tables:</H3>");
243 try {
244 listCustomers(out, customerhome);
245 listAddress(out, addresshome);
246 } catch (Exception e) {
247 out.println("<p>ERROR: exception caught = " + e + "</p>");
248 return;
249 }
250
251
252 out.println("<h2>Example Showing Customer/Phone Relationship</h2>");
253
254 out.println("<h3>Starting content of phone list:</h3>");
256
257 Vector vv = customer.getPhoneList();
258 listPhones(out, vv);
259
260 out.println("<h3>Adding a new type '1' phone number to Customer 'John Smith'.</h3>");
262 try {
263 customer.addPhoneNumber("612-555-1212", (byte) 1);
264 } catch (Exception e) {
265 out.println("<p>ERROR: Exception : " + e + "</p>");
266 return;
267 }
268
269 out.println("<h3>New content of phone list for customer 'John Smith':</h3>");
270 vv = customer.getPhoneList();
271 listPhones(out, vv);
272
273 out.println("<h3>Adding a new type '2' phone number to Customer 'John Smith'.</h3>");
275 try {
276 customer.addPhoneNumber("800-333-3333", (byte) 2);
277 } catch (Exception e) {
278 out.println("<p>ERROR: Exception : " + e + "</p>");
279 return;
280 }
281 out.println("<h3>New content of phone list for customer 'John Smith':</h3>");
282 vv = customer.getPhoneList();
283 listPhones(out, vv);
284
285 out.println("<h3>Updating type '1' phone numbers.</h3>");
287 try {
288 customer.updatePhoneNumber("763-555-1212", (byte) 1);
289 } catch (Exception e) {
290 out.println("<p>ERROR: Exception : " + e + "</p>");
291 return;
292 }
293
294 out.println("<h3>New content of phone list for customer 'John Smith':</h3>");
295 vv = customer.getPhoneList();
296 listPhones(out, vv);
297
298 out.print("<h3>Removing type '1' phone numbers from this Customer.</h3>");
300 customer.removePhoneNumber((byte) 1);
301
302 out.println("<h3>Final content of phone list:</h3>");
303 vv = customer.getPhoneList();
304 listPhones(out, vv);
305
308 out.println("<H2>Remove newly created beans for cleaning.</H2>");
310 try {
311 customer.remove();
312 addrold.remove();
313 } catch (Exception e) {
314 out.println("<p>Exception : " + e + "</p>");
315 return;
316 }
317
318 if (ok) {
319 out.println("<p align=\"center\"><strong>Servlet is OK.</strong></p>");
320 }
321
322 out.println("<a HREF=\"index.html\"><b>Back to Menu</b></a>");
323 out.println("</body>");
324 out.println("</html>");
325 }
326
327 private void listCustomers (PrintWriter out, CustomerHomeLocal chl) throws Exception {
328 out.println("<p><b>Customers</b> Table Content:</p>");
329 out.println("<ul>");
330 java.util.Collection clc = chl.findAllCustomers();
331 if (clc == null) {
332 out.println("<li>Customers table is empty</li>");
333 } else {
334 java.util.Iterator iterator = clc.iterator();
335 while (iterator.hasNext()) {
336 CustomerLocal cl = (CustomerLocal) iterator.next();
337 String name = cl.getName().getLastName();
338 String number = cl.getCreditCard().getNumber();
339 out.print("<li>customerLastName = '" + name + "', creditCardNumber = '" + number);
340 if (cl.getHomeAddress() != null) {
341 String city = cl.getHomeAddress().getCity();
342 out.print("', city = '" + city);
343 }
344 out.println("'</li>");
345 java.util.Collection phoneNumbers = cl.getPhoneNumbers();
346 java.util.Iterator phiterator = phoneNumbers.iterator();
347 out.println("<ul>");
348 while (phiterator.hasNext()) {
349 PhoneLocal phone = (PhoneLocal) phiterator.next();
350 out.println("<li>phoneType = '" + phone.getType()
351 + "', phoneNumber = '" + phone.getNumber() + "'</li>");
352 }
353 out.println("</ul>");
354
355 }
356 }
357 out.println("</ul>");
358 }
359
360 private void listCreditcards (PrintWriter out, CreditCardHomeLocal cchl) throws Exception {
361 out.println("<p><b>Creditcards</b> Table Content:</p>");
362 out.println("<ul>");
363 java.util.Collection clc = cchl.findAllCreditCards();
364 if (clc == null) {
365 out.println("<li>CreditCards table is empty</li>");
366 } else {
367 java.util.Iterator iterator = clc.iterator();
368 while (iterator.hasNext()) {
369 CreditCardLocal ccl = (CreditCardLocal) iterator.next();
370 String number = ccl.getNumber();
371 String name = ccl.getNameOnCard();
372 out.println("<li>creditCardNumber = '" + number
373 + "', nameOnCard = '" + name + "'</li>");
374 }
375 }
376 out.println("</ul>");
377 }
378
379 private void listAddress (PrintWriter out, AddressHomeLocal cchl) throws Exception {
380 out.println("<p><b>Addresses</b> Table Content:</p>");
381 out.println("<ul>");
382 java.util.Collection clc = cchl.findAllAddress();
383 if (clc == null) {
384 out.println("<li>Addresses table is empty</li>");
385 } else {
386 java.util.Iterator iterator = clc.iterator();
387 while (iterator.hasNext()) {
388 AddressLocal al = (AddressLocal) iterator.next();
389 String city = al.getCity();
390 String street = al.getStreet();
391 out.println("<li>city = '" + city + "', street = '" + street + "'</li>");
392 }
393 }
394 out.println("</ul>");
395 }
396
397 private void listPhones(PrintWriter out, Vector vv) {
398 out.println("<ul>");
399 if (vv.size() == 0) {
400 out.println("<li>phones list is empty</li>");
401 } else {
402 for (int jj = 0; jj < vv.size(); jj++) {
403 String ss = (String) (vv.get(jj));
404 out.println("<li>" + ss + "</li>");
405 }
406 }
407 out.println("</ul>");
408 }
409
410 }
411 |
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