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authorAnton Tananaev <anton.tananaev@gmail.com>2012-04-27 19:19:25 +0000
committerAnton Tananaev <anton.tananaev@gmail.com>2012-04-27 19:19:25 +0000
commit365a86bef2371035e4f6731fbcf1184f46346586 (patch)
tree24eb9b6456bed47a86dc81f3ae669ae90e425c70 /src/org/traccar/model/DatabaseDataManager.java
parent89654e64cfa18e19741ea97fe685ccfa2f40788c (diff)
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+/*
+ * 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();
+ }
+
+}