org.littleshoot.util
Class LockedFileWatcher

java.lang.Object
  java.util.TimerTask
      org.littleshoot.util.LockedFileWatcher

All Implemented Interfaces:

Runnable

public abstract class LockedFileWatcher
extends TimerTask

Utility class for detecting file changes. When a change is detected, this class obtains an exclusive read/write lock on the file and notifies subclasses of the change. The subclass MUST read the whole file and truncate it to zero size.

Constructor Summary

LockedFileWatcher(File file)
Creates a new watcher for the specified file.

Method Summary

protected abstract void	onFileChange(FileChannel fc)
void	run()

Methods inherited from class java.util.TimerTask

cancel, scheduledExecutionTime

Methods inherited from class java.lang.Object

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

Constructor Detail

LockedFileWatcher

public LockedFileWatcher(File file)

Creates a new watcher for the specified file.

Parameters:

file - The file to watch.

Method Detail

run

public final void run()

Specified by:

run in interface Runnable

Specified by:

run in class TimerTask

onFileChange

protected abstract void onFileChange(FileChannel fc)