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authorAnton Tananaev <anton.tananaev@gmail.com>2011-11-16 11:37:11 +0000
committerAnton Tananaev <anton.tananaev@gmail.com>2011-11-16 11:37:11 +0000
commit710bdd092b193704fabdf6136bd5bffe0d8e01e7 (patch)
treea07c70ca1fbd6b7f103977327652eb32d35490d9 /src/org/traccar/Server.java
parent822f9eb02153f12bb435d467074cf85eb9e581fb (diff)
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Diffstat (limited to 'src/org/traccar/Server.java')
-rw-r--r--src/org/traccar/Server.java38
1 files changed, 18 insertions, 20 deletions
diff --git a/src/org/traccar/Server.java b/src/org/traccar/Server.java
index 305edecde..c7d52337e 100644
--- a/src/org/traccar/Server.java
+++ b/src/org/traccar/Server.java
@@ -28,6 +28,7 @@ import java.sql.ResultSet;
import java.sql.SQLException;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
+import java.util.Calendar;
import java.util.Date;
import java.util.logging.Logger;
import java.util.logging.FileHandler;
@@ -102,10 +103,10 @@ public class Server implements DataManager {
* Database connection
*/
private Connection connection;
-
- private NamedParameterStatement selectDevice;
-
- private NamedParameterStatement insertPosition;
+
+ private String selectDeviceQuery;
+
+ private String insertPositionQuery;
/**
* Init database
@@ -130,27 +131,23 @@ public class Server implements DataManager {
connection = DriverManager.getConnection(url);
}
- // Init statements
- String selectDeviceQuery = properties.getProperty("database.selectDevice");
- if (selectDeviceQuery != null) {
- selectDevice = new NamedParameterStatement(connection, selectDeviceQuery);
- }
-
- String insertPositionQuery = properties.getProperty("database.insertPosition");
- if (insertPositionQuery != null) {
- insertPosition = new NamedParameterStatement(connection, insertPositionQuery);
- }
+ selectDeviceQuery = properties.getProperty("database.selectDevice");
+ insertPositionQuery = properties.getProperty("database.insertPosition");
}
/**
* Devices
*/
private Map devices;
+ private Calendar devicesLastUpdate;
+ private Long devicesListRefreshDelay = new Long(5 * 60 * 1000);
public synchronized List getDevices() throws SQLException {
List deviceList = new LinkedList();
+ NamedParameterStatement selectDevice =
+ new NamedParameterStatement(connection, selectDeviceQuery);
ResultSet result = selectDevice.executeQuery();
while (result.next()) {
Device device = new Device();
@@ -161,18 +158,16 @@ public class Server implements DataManager {
return deviceList;
}
-
+
public Device getDeviceByImei(String imei) throws SQLException {
-
- // Init device list
- if (devices == null) {
+
+ if ((devices == null) || (Calendar.getInstance().getTimeInMillis() - devicesLastUpdate.getTimeInMillis() > devicesListRefreshDelay)) {
devices = new HashMap();
-
List deviceList = getDevices();
-
for (Object device: deviceList) {
devices.put(((Device) device).getImei(), device);
}
+ devicesLastUpdate = Calendar.getInstance();
}
return (Device) devices.get(imei);
@@ -180,6 +175,9 @@ public class Server implements DataManager {
public synchronized void setPosition(Position position) throws SQLException {
+ NamedParameterStatement insertPosition =
+ new NamedParameterStatement(connection, insertPositionQuery);
+
insertPosition.setLong("device_id", position.getDeviceId());
insertPosition.setTimestamp("time", position.getTime());
insertPosition.setBoolean("valid", position.getValid());