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
|
/*
* Copyright 2012 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.sql.ResultSet;
import java.sql.SQLException;
import java.util.*;
import org.traccar.helper.AdvancedConnection;
import org.traccar.helper.NamedParameterStatement;
/**
* Database abstraction class
*/
public class DatabaseDataManager implements DataManager {
public DatabaseDataManager(Properties properties)
throws ClassNotFoundException, SQLException {
initDatabase(properties);
}
/**
* Database statements
*/
private NamedParameterStatement queryGetDevices;
private NamedParameterStatement queryAddPosition;
/**
* Devices cache
*/
private Map devices;
private Calendar devicesLastUpdate;
private Long devicesRefreshDelay;
/**
* Initialize database
*/
private void initDatabase(Properties properties)
throws ClassNotFoundException, SQLException {
// Load driver
String driver = properties.getProperty("database.driver");
if (driver != null) {
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);
String query = properties.getProperty("database.selectDevice");
queryGetDevices = new NamedParameterStatement(connection, query);
query = properties.getProperty("database.insertPosition");
queryAddPosition = new NamedParameterStatement(connection, query);
}
public synchronized List getDevices() throws SQLException {
List deviceList = new LinkedList();
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;
}
public void addDevice(Device device) {} // TODO: implement
public void addUpdate(Device device) {} // TODO: implement
public void addRemove(Device device) {} // TODO: implement
public Device getDeviceByImei(String imei) throws SQLException {
if ((devices == null) || (Calendar.getInstance().getTimeInMillis() - devicesLastUpdate.getTimeInMillis() > devicesRefreshDelay)) {
devices = new HashMap();
List deviceList = getDevices();
for (Object device: deviceList) {
devices.put(((Device) device).getImei(), device);
}
devicesLastUpdate = Calendar.getInstance();
}
return (Device) devices.get(imei);
}
public List getPositions(Long deviceId) { return null; } // TODO: implement
public synchronized void addPosition(Position position) throws SQLException {
queryAddPosition.prepare();
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("extended_info", position.getExtendedInfo());
queryAddPosition.executeUpdate();
}
}
|
