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1
51
52 package org.objectweb.jass.examples.travelagency.ejbs;
53
54 import javax.activity.opennested.UserOpenNested;
55 import javax.ejb.EJBException  ;
56 import javax.ejb.SessionBean ;
57 import javax.ejb.SessionContext ;
58 import javax.naming.Context ;
59 import javax.naming.InitialContext ;
60
61 import org
62 .objectweb
63 .jass
64 .examples
65 .travelagency
66 .exceptions
67 .NotEnoughRoomsException;
68 import org
69 .objectweb
70 .jass
71 .examples
72 .travelagency
73 .exceptions
74 .NotEnoughSeatsException;
75
76
84 public class TravelAgencyBean implements SessionBean {
85
86 private Airline airline;
87 private Hotel hotel;
88 private UserOpenNested uon;
89
90 public void ejbCreate() throws javax.ejb.CreateException {
91 airline = getAdaptAirlineEJB();
92 hotel = getAdaptHotelEJB();
93 uon = getUserOpenNested();
94 System.out.println("Travel Agency stateless EJB created!!!");
95 }
96
97 public void ejbActivate() throws EJBException {
98 }
99
100 public void ejbPassivate() throws EJBException {
101 }
102
103 public void ejbRemove() throws EJBException {
104 airline = null;
105 hotel = null;
106 uon = null;
107 System.out.println("Travel Agency stateless EJB removed!!!");
108 }
109
110 public void setSessionContext(SessionContext sessionContext)
111 throws EJBException {
112
113 }
114
115
125 public void makeReservation(String name, int nSeats, int nRooms)
126 throws Exception {
127
128 try {
129 uon.activityBegin(0);
130 airline.reserveSeats(nSeats);
131 hotel.reserveRooms(nRooms);
132 uon.activityCommit(null);
133 } catch (NotEnoughSeatsException e) {
134 uon.activityRollback();
135 throw e;
136 } catch (NotEnoughRoomsException e) {
137 uon.activityRollback();
138 throw e;
139 } catch (Exception e) {
140 throw e;
141 }
142 }
143
144
147 private UserOpenNested getUserOpenNested() {
148 Context ctx = null;
149
150 try {
151 ctx = new InitialContext ();
152 uon = (UserOpenNested) ctx.lookup("UserOpenNested");
153 } catch (Exception e) {
154 e.printStackTrace();
155 }
156 return uon;
157 }
158
159
162 private Airline getAdaptAirlineEJB() {
163 Object obj = null;
164 Context ctx = null;
165 try {
166 ctx = new InitialContext ();
167 obj = ctx.lookup("AirlineEJB");
168 AirlineHome airlineHome =
169 (AirlineHome) javax.rmi.PortableRemoteObject.narrow(
170 obj,
171 AirlineHome.class);
172 airline = airlineHome.create();
173 } catch (Exception e) {
174 e.printStackTrace();
175 }
176 return airline;
177 }
178
179
182 private Hotel getAdaptHotelEJB() {
183 Object obj = null;
184 Context ctx = null;
185 try {
186 ctx = new InitialContext ();
187 obj = ctx.lookup("HotelEJB");
188 HotelHome hotelHome =
189 (HotelHome) javax.rmi.PortableRemoteObject.narrow(
190 obj,
191 HotelHome.class);
192 hotel = hotelHome.create();
193 } catch (Exception e) {
194 e.printStackTrace();
195 }
196 return hotel;
197 }
198
199 }
200 |
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