org.placelab.core
Class NetStumblerFileParser

java.lang.Object
  org.placelab.spotter.AbstractSpotter
      org.placelab.spotter.SyncSpotter
          org.placelab.spotter.LogSpotter
              org.placelab.core.NetStumblerFileParser

All Implemented Interfaces:

Spotter

public class NetStumblerFileParser

extends LogSpotter

NetStumblerFileParser will read an exported tab-separated text-log from NetStumbler and read it line by line. Each line corresponds to a NetStumblerMeasurement. We take each measurement and add it to a List. There is a trick we do to get the absolute timestamp. We get the date from the 3rd line of the logfile and then parse out the year, month and day Below is an example of a Netstumbler output:

 # $Creator: Network Stumbler Version 0.3.30
 # $Format: wi-scan with extensions
 # Latitude 	Longitude		( SSID )	Type	( BSSID )	Time (GMT)	[ SNR Sig Noise ]	...
 $ $Date GMT: 2004-04-06
 
 N 47.6619200	E122.3162617	( default )	BBS		( 00:80:c8:19:5a:1d )	01:25:07 (GMT)	[ 35 87 52 ]
 N 47.6619200	E122.3162617	( linksys-g )	BBS	( 00:0c:41:14:a1:92 )	01:25:07 (GMT)	[ 23 73 50 ]
 N 47.6619200	E122.3162617	( 1100 )	BBS		( 00:0d:28:88:c7:56 )	01:25:07 (GMT)	[ 14 72 53 ]
 
 

Field Summary

static boolean	IgnoreDuplicateReading
static int	NETSTUMBLER_RSSI_ADJUSTMENT

Fields inherited from class org.placelab.spotter.LogSpotter

NO_DELAY

Constructor Summary

NetStumblerFileParser(java.lang.String tracefile)

Method Summary

void	close() Unloads resources used by the spotter.
Measurement	getMeasurementFromLog() Returns a single Measurement from the log, or null if there are no Measurements remaining.
static boolean	isValidFile(java.lang.String file)
static boolean	isValidFirstLine(java.lang.String line)
void	open() Load resources used by the spotter.
NetStumblerReading	readLine()
StumblerMeasurement	readMeasurement()

Methods inherited from class org.placelab.spotter.LogSpotter

getMeasurementImpl, getRate, logIsFinished, newSpotter, nextScanInterval, setRate

Methods inherited from class org.placelab.spotter.SyncSpotter

errorInBackgroundThreadAndThreadDeath, getMeasurement, scanUsingBackgroundThread, scanUsingEventSystem, startScanning, startScanning, stopScanning

Methods inherited from class org.placelab.spotter.AbstractSpotter

addListener, notifyEndOfScan, notifyEndOfScan, notifyGotException, notifyGotException, notifyGotMeasurement, notifyGotMeasurement, removeListener, scanOnce, scanOnce, waitForThread

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

IgnoreDuplicateReading

public static boolean IgnoreDuplicateReading

NETSTUMBLER_RSSI_ADJUSTMENT

public static final int NETSTUMBLER_RSSI_ADJUSTMENT

See Also:

Constant Field Values

Constructor Detail

NetStumblerFileParser

public NetStumblerFileParser(java.lang.String tracefile)
                      throws java.io.IOException

Method Detail

open

public void open()

Description copied from interface: Spotter

Load resources used by the spotter. Applications should be able to invoke this methods multiple times in sequence and have the "right" things happen. All Spotters should be opened before being used.

close

public void close()

Description copied from interface: Spotter

Unloads resources used by the spotter. Multiple calls to close are ok.

readLine

public NetStumblerReading readLine()
                            throws java.io.IOException

Throws:

java.io.IOException

readMeasurement

public StumblerMeasurement readMeasurement()
                                    throws java.io.IOException

Throws:

java.io.IOException

isValidFile

public static boolean isValidFile(java.lang.String file)

isValidFirstLine

public static boolean isValidFirstLine(java.lang.String line)

getMeasurementFromLog

public Measurement getMeasurementFromLog()

Description copied from class: LogSpotter

Returns a single Measurement from the log, or null if there are no Measurements remaining. This method is only of interest to implementers of LogSpotters, users should instead call Spotter.getMeasurement()

Specified by:

getMeasurementFromLog in class LogSpotter