1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
|
/*
* Copyright 2013 Anton Tananaev (anton.tananaev@gmail.com)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.traccar.web.server.model;
import java.util.Date;
import java.util.LinkedList;
import java.util.List;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.persistence.EntityManager;
import javax.persistence.Persistence;
import javax.persistence.TypedQuery;
import javax.servlet.ServletException;
import javax.servlet.http.HttpSession;
import org.traccar.web.client.model.DataService;
import org.traccar.web.shared.model.Device;
import org.traccar.web.shared.model.Position;
import org.traccar.web.shared.model.User;
import com.google.gwt.user.server.rpc.RemoteServiceServlet;
public class DataServiceImpl extends RemoteServiceServlet implements DataService {
private static final long serialVersionUID = 1;
private static final String PERSISTENCE_DATASTORE = "java:/DefaultDS";
private static final String PERSISTENCE_UNIT_DEBUG = "debug";
private static final String PERSISTENCE_UNIT_RELEASE = "release";
private static final String ATTRIBUTE_USER = "user";
private EntityManager entityManager;
@Override
public void init() throws ServletException {
super.init();
String persistenceUnit;
try {
Context context = new InitialContext();
context.lookup(PERSISTENCE_DATASTORE);
persistenceUnit = PERSISTENCE_UNIT_RELEASE;
} catch (NamingException e) {
persistenceUnit = PERSISTENCE_UNIT_DEBUG;
}
entityManager = Persistence.createEntityManagerFactory(persistenceUnit).createEntityManager();
}
@Override
public void destroy() {
entityManager.close();
super.destroy();
}
private void setUser(User user) {
HttpSession session = getThreadLocalRequest().getSession();
if (user != null) {
session.setAttribute(ATTRIBUTE_USER, user);
} else {
session.removeAttribute(ATTRIBUTE_USER);
}
}
private User getUser() {
HttpSession session = getThreadLocalRequest().getSession();
return (User) session.getAttribute(ATTRIBUTE_USER);
}
@Override
public boolean authenticated() {
return (getUser() != null);
}
@Override
public boolean login(String login, String password) {
TypedQuery<User> query = entityManager.createQuery(
"SELECT x FROM User x WHERE x.login = :login", User.class);
query.setParameter("login", login);
List<User> results = query.getResultList();
if (!results.isEmpty() && password.equals(results.get(0).getPassword())) {
setUser(results.get(0));
return true;
}
return false;
}
@Override
public boolean logout() {
setUser(null);
return true;
}
@Override
public boolean register(String login, String password) {
User user = new User();
user.setLogin(login);
user.setPassword(password);
entityManager.getTransaction().begin();
try {
entityManager.persist(user);
entityManager.getTransaction().commit();
} catch (Exception e) {
entityManager.getTransaction().rollback();
throw e;
}
setUser(user);
return true;
}
@Override
public List<Device> getDevices() {
List<Device> devices = new LinkedList<Device>();
User user = getUser();
devices.addAll(user.getDevices());
return devices;
}
@Override
public Device addDevice(Device device) {
User user = getUser();
entityManager.getTransaction().begin();
try {
entityManager.persist(device);
user.getDevices().add(device);
entityManager.getTransaction().commit();
} catch (Exception e) {
entityManager.getTransaction().rollback();
throw e;
}
return device;
}
@Override
public Device updateDevice(Device device) {
entityManager.getTransaction().begin();
try {
device = entityManager.merge(device);
entityManager.getTransaction().commit();
} catch (Exception e) {
entityManager.getTransaction().rollback();
throw e;
}
return device;
}
@Override
public Device removeDevice(Device device) {
User user = getUser();
entityManager.getTransaction().begin();
try {
device = entityManager.merge(device);
user.getDevices().remove(device);
// If you want to remove device you need to remove all linked positions
//entityManager.remove(device);
entityManager.getTransaction().commit();
} catch (Exception e) {
entityManager.getTransaction().rollback();
throw e;
}
return device;
}
@Override
public List<Position> getPositions(Device device, Date from, Date to) {
List<Position> positions = new LinkedList<Position>();
TypedQuery<Position> query = entityManager.createQuery(
"SELECT x FROM Position x WHERE x.device = :device AND x.time BETWEEN :from AND :to", Position.class);
query.setParameter("device", device);
query.setParameter("from", from);
query.setParameter("to", to);
positions.addAll(query.getResultList());
return positions;
}
@Override
public List<Position> getLatestPositions() {
List<Position> positions = new LinkedList<Position>();
User user = getUser();
if (!user.getDevices().isEmpty()) {
TypedQuery<Position> query = entityManager.createQuery(
"SELECT x FROM Position x WHERE (x.device, x.time) IN (" +
"SELECT y.device, MAX(y.time) FROM Position y WHERE y.device IN :devices GROUP BY y.device)", Position.class);
query.setParameter("devices", user.getDevices());
positions.addAll(query.getResultList());
}
return positions;
}
}
|
