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/*
* Copyright 2012 - 2014 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.database;
import com.mchange.v2.c3p0.ComboPooledDataSource;
import java.io.File;
import java.io.StringReader;
import java.net.URL;
import java.net.URLClassLoader;
import java.sql.*;
import java.util.*;
import javax.sql.DataSource;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathExpressionException;
import javax.xml.xpath.XPathFactory;
import org.traccar.helper.DriverDelegate;
import org.traccar.helper.Log;
import org.traccar.model.Device;
import org.traccar.model.Position;
import org.xml.sax.InputSource;
/**
* Database abstraction class
*/
public class DataManager {
public DataManager(Properties properties) throws Exception {
if (properties != null) {
initDatabase(properties);
}
}
private DataSource dataSource;
public DataSource getDataSource() {
return dataSource;
}
/**
* 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);
}
}
// Initialize data source
ComboPooledDataSource ds = new ComboPooledDataSource();
ds.setDriverClass(properties.getProperty("database.driver"));
ds.setJdbcUrl(properties.getProperty("database.url"));
ds.setUser(properties.getProperty("database.user"));
ds.setPassword(properties.getProperty("database.password"));
ds.setIdleConnectionTestPeriod(600);
ds.setTestConnectionOnCheckin(true);
dataSource = ds;
// Load statements from configuration
String query;
query = properties.getProperty("database.selectDevice");
if (query != null) {
queryGetDevices = new NamedParameterStatement(query);
}
query = properties.getProperty("database.insertPosition");
if (query != null) {
queryAddPosition = new NamedParameterStatement(query);
}
query = properties.getProperty("database.updateLatestPosition");
if (query != null) {
queryUpdateLatestPosition = new NamedParameterStatement(query);
}
}
public synchronized List<Device> getDevices() throws SQLException {
List<Device> deviceList = new LinkedList<Device>();
if (queryGetDevices != null) {
Connection connection = dataSource.getConnection();
try {
PreparedStatement statement = queryGetDevices.prepare(connection);
try {
ResultSet result = statement.executeQuery();
while (result.next()) {
Device device = new Device();
device.setId(result.getLong("id"));
device.setImei(result.getString("imei"));
deviceList.add(device);
}
} finally {
statement.close();
}
} finally {
connection.close();
}
}
return deviceList;
}
/**
* Devices cache
*/
private Map<String, Device> devices;
public Device getDeviceByImei(String imei) throws SQLException {
if (devices == null || !devices.containsKey(imei)) {
devices = new HashMap<String, Device>();
for (Device device : getDevices()) {
devices.put(device.getImei(), device);
}
}
return devices.get(imei);
}
public synchronized Long addPosition(Position position) throws SQLException {
if (queryAddPosition != null) {
Connection connection = dataSource.getConnection();
try {
PreparedStatement statement = queryAddPosition.prepare(connection, Statement.RETURN_GENERATED_KEYS);
try {
assignVariables(queryAddPosition, statement, position);
statement.executeUpdate();
ResultSet result = statement.getGeneratedKeys();
if (result != null && result.next()) {
return result.getLong(1);
}
} finally {
statement.close();
}
} finally {
connection.close();
}
}
return null;
}
public void updateLatestPosition(Position position, Long positionId) throws SQLException {
if (queryUpdateLatestPosition != null) {
Connection connection = dataSource.getConnection();
try {
PreparedStatement statement = queryUpdateLatestPosition.prepare(connection);
try {
assignVariables(queryUpdateLatestPosition, statement, position);
queryUpdateLatestPosition.setLong(statement, "id", positionId);
statement.executeUpdate();
} finally {
statement.close();
}
} finally {
connection.close();
}
}
}
private void assignVariables(NamedParameterStatement nps, PreparedStatement ps, Position position) throws SQLException {
nps.setLong(ps, "device_id", position.getDeviceId());
nps.setTimestamp(ps, "time", position.getTime());
nps.setBoolean(ps, "valid", position.getValid());
nps.setDouble(ps, "altitude", position.getAltitude());
nps.setDouble(ps, "latitude", position.getLatitude());
nps.setDouble(ps, "longitude", position.getLongitude());
nps.setDouble(ps, "speed", position.getSpeed());
nps.setDouble(ps, "course", position.getCourse());
nps.setString(ps, "address", position.getAddress());
nps.setString(ps, "extended_info", position.getExtendedInfo());
// DELME: Temporary compatibility support
XPath xpath = XPathFactory.newInstance().newXPath();
try {
InputSource source = new InputSource(new StringReader(position.getExtendedInfo()));
String index = xpath.evaluate("/info/index", source);
if (!index.isEmpty()) {
nps.setLong(ps, "id", Long.valueOf(index));
} else {
nps.setLong(ps, "id", null);
}
source = new InputSource(new StringReader(position.getExtendedInfo()));
String power = xpath.evaluate("/info/power", source);
if (!power.isEmpty()) {
nps.setDouble(ps, "power", Double.valueOf(power));
} else {
nps.setLong(ps, "power", null);
}
} catch (XPathExpressionException e) {
Log.warning("Error in XML: " + position.getExtendedInfo(), e);
nps.setLong(ps, "id", null);
nps.setLong(ps, "power", null);
}
}
}
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