org.placelab.stumbler
Class LogWriter

java.lang.Object
  org.placelab.stumbler.LogWriter

All Implemented Interfaces:

ShutdownListener, StumblerFunnelUpdateListener

public class LogWriter

extends java.lang.Object

implements StumblerFunnelUpdateListener, ShutdownListener

The LogWriter class is geared toward the type of usage we expect for people using the PlacelabStumbler gui application. That is, they'll open it up, start stumbling, and then save once their finished. So this saves the log text to a temporary file, and then copies it to the destination specified by the user once they request a save.

Field Summary

java.util.Vector	criticalSpotters
static int	LOG_VERSION
static java.lang.String	PREAMBLE

Constructor Summary

LogWriter()

LogWriter(java.lang.String path)

LogWriter(java.lang.String path, boolean append)

Method Summary

static int	getLogVersion(java.lang.String firstLine)
static java.lang.String	makeTempFile()
boolean	saveFile(java.lang.String to)
boolean	setOutputFile(java.lang.String path)
void	shutdown()
void	stumblerUpdated(java.util.Hashtable updates) This message is sent after every StumblerFunnel has new data available Note that this callback is sent in the thread that the StumblerUpdateListener used to subscribe itself to the StumblerFunnel.

Methods inherited from class java.lang.Object

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

Field Detail

criticalSpotters

public java.util.Vector criticalSpotters

PREAMBLE

public static java.lang.String PREAMBLE

LOG_VERSION

public static int LOG_VERSION

Constructor Detail

LogWriter

public LogWriter()
          throws java.io.IOException

LogWriter

public LogWriter(java.lang.String path)
          throws java.io.IOException

LogWriter

public LogWriter(java.lang.String path,
                 boolean append)
          throws java.io.IOException

Method Detail

makeTempFile

public static java.lang.String makeTempFile()
                                     throws java.io.IOException

Throws:

java.io.IOException

getLogVersion

public static int getLogVersion(java.lang.String firstLine)

stumblerUpdated

public void stumblerUpdated(java.util.Hashtable updates)

Description copied from interface: StumblerFunnelUpdateListener

This message is sent after every StumblerFunnel has new data available Note that this callback is sent in the thread that the StumblerUpdateListener used to subscribe itself to the StumblerFunnel.

Specified by:

stumblerUpdated in interface StumblerFunnelUpdateListener

Parameters:

updates - updates each StumblerSpotter keys to its MeasurementPackages for this update.

saveFile

public boolean saveFile(java.lang.String to)
                 throws java.io.IOException

Throws:

java.io.IOException

setOutputFile

public boolean setOutputFile(java.lang.String path)
                      throws java.io.IOException

Throws:

java.io.IOException

shutdown

public void shutdown()

Specified by:

shutdown in interface ShutdownListener