Integrate c3p0 database library

1 files changed, 232 insertions, 0 deletions

diff --git a/src/org/traccar/database/DataManager.java b/src/org/traccar/database/DataManager.java
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+++ b/src/org/traccar/database/DataManager.java
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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);
+        }
+    }
+
+}