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
|
/*
* Copyright 2012 - 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.model;
import java.io.File;
import java.net.URL;
import java.net.URLClassLoader;
import java.sql.*;
import java.util.*;
import org.traccar.helper.AdvancedConnection;
import org.traccar.helper.DriverDelegate;
import org.traccar.helper.NamedParameterStatement;
/**
* Database abstraction class
*/
public class DatabaseDataManager implements DataManager {
public DatabaseDataManager(Properties properties) throws Exception {
initDatabase(properties);
}
/**
* Database statements
*/
private NamedParameterStatement queryGetDevices;
private NamedParameterStatement queryAddPosition;
private NamedParameterStatement queryUpdateLatestPosition;
/**
* Initialize database
*/
private void initDatabase(Properties properties) throws Exception {
// Load driver
String driver = properties.getProperty("database.driver");
if (driver != null) {
String driverFile = properties.getProperty("database.driverFile");
if (driverFile != null) {
URL url = new URL("jar:file:" + new File(driverFile).getAbsolutePath() + "!/");
URLClassLoader cl = new URLClassLoader(new URL[] { url });
Driver d = (Driver) Class.forName(driver, true, cl).newInstance();
DriverManager.registerDriver(new DriverDelegate(d));
} else {
Class.forName(driver);
}
}
// Refresh delay
String refreshDelay = properties.getProperty("database.refreshDelay");
if (refreshDelay != null) {
devicesRefreshDelay = Long.valueOf(refreshDelay) * 1000;
} else {
devicesRefreshDelay = new Long(300) * 1000; // Magic number
}
// Connect database
String url = properties.getProperty("database.url");
String user = properties.getProperty("database.user");
String password = properties.getProperty("database.password");
AdvancedConnection connection = new AdvancedConnection(url, user, password);
// Load statements from configuration
String query;
query = properties.getProperty("database.selectDevice");
if (query != null) {
queryGetDevices = new NamedParameterStatement(connection, query);
}
query = properties.getProperty("database.insertPosition");
if (query != null) {
queryAddPosition = new NamedParameterStatement(connection, query);
}
query = properties.getProperty("database.updateLatestPosition");
if (query != null) {
queryUpdateLatestPosition = new NamedParameterStatement(connection, query);
}
}
@Override
public synchronized List<Device> getDevices() throws SQLException {
List<Device> deviceList = new LinkedList<Device>();
if (queryGetDevices != null) {
queryGetDevices.prepare();
ResultSet result = queryGetDevices.executeQuery();
while (result.next()) {
Device device = new Device();
device.setId(result.getLong("id"));
device.setImei(result.getString("imei"));
deviceList.add(device);
}
}
return deviceList;
}
/**
* Devices cache
*/
private Map<String, Device> devices;
private Calendar devicesLastUpdate;
private Long devicesRefreshDelay;
@Override
public Device getDeviceByImei(String imei) throws SQLException {
if ((devices == null) || (Calendar.getInstance().getTimeInMillis() - devicesLastUpdate.getTimeInMillis() > devicesRefreshDelay)) {
List<Device> list = getDevices();
devices = new HashMap<String, Device>();
for (Device device: list) {
devices.put(device.getImei(), device);
}
devicesLastUpdate = Calendar.getInstance();
}
return devices.get(imei);
}
@Override
public synchronized Long addPosition(Position position) throws SQLException {
if (queryAddPosition != null) {
queryAddPosition.prepare(Statement.RETURN_GENERATED_KEYS);
queryAddPosition.setLong("id", position.getId());
queryAddPosition.setLong("device_id", position.getDeviceId());
queryAddPosition.setTimestamp("time", position.getTime());
queryAddPosition.setBoolean("valid", position.getValid());
queryAddPosition.setDouble("altitude", position.getAltitude());
queryAddPosition.setDouble("latitude", position.getLatitude());
queryAddPosition.setDouble("longitude", position.getLongitude());
queryAddPosition.setDouble("speed", position.getSpeed());
queryAddPosition.setDouble("course", position.getCourse());
queryAddPosition.setDouble("power", position.getPower());
queryAddPosition.setString("address", position.getAddress());
queryAddPosition.setString("extended_info", position.getExtendedInfo());
queryAddPosition.executeUpdate();
ResultSet result = queryAddPosition.getGeneratedKeys();
if (result != null && result.next()) {
return result.getLong(1);
}
}
return null;
}
@Override
public void updateLatestPosition(Long deviceId, Long positionId) throws SQLException {
if (queryUpdateLatestPosition != null) {
queryUpdateLatestPosition.prepare();
queryUpdateLatestPosition.setLong("device_id", deviceId);
queryUpdateLatestPosition.setLong("id", positionId);
queryUpdateLatestPosition.executeUpdate();
}
}
}
|
