net.sf.jour.util
Class FileWatchdog

java.lang.Object
  java.lang.Thread
      net.sf.jour.util.FileWatchdog

All Implemented Interfaces:

java.lang.Runnable

public class FileWatchdog

extends java.lang.Thread

Check every now and then that a certain file has not changed. If it has, then call the doOnChange()method. This is build base on org.apache.log4j.helpers.FileWatchdog

Since:

version 0.9.1

Author:

Ceki Gülcü

Field Summary

static long	DEFAULT_DELAY The default delay between every file modification check, set to 60 seconds.
protected long	delay The delay to observe between every check.
(package private) java.io.File	file
(package private) long	fileLength
protected java.lang.String	filename The name of the file to observe for changes.
(package private) boolean	interrupted
(package private) long	lastModif
(package private) java.util.List	listenerList
protected static org.apache.log4j.Logger	log
(package private) boolean	warnedAlready
(package private) static java.util.Hashtable	watchdogs

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

protected

FileWatchdog(java.lang.String filename)

Method Summary

void	addListener(FileChageListener fileChageListener)
protected void	checkAndConfigure(boolean callOnChange)
void	doOnChange()
protected boolean	fileDetected()
void	finish()
static FileWatchdog	getFileWatchdog(java.lang.String filename, boolean create)
void	run()
void	setDelay(long delay) Set the delay to observe between each check of the file changes.

Methods inherited from class java.lang.Thread

activeCount, checkAccess, countStackFrames, currentThread, destroy, dumpStack, enumerate, getContextClassLoader, getName, getPriority, getThreadGroup, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, resume, setContextClassLoader, setDaemon, setName, setPriority, sleep, sleep, start, stop, stop, suspend, toString, yield

Methods inherited from class java.lang.Object

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

Field Detail

log

protected static final org.apache.log4j.Logger log

DEFAULT_DELAY

public static final long DEFAULT_DELAY

The default delay between every file modification check, set to 60 seconds.

See Also:

Constant Field Values

filename

protected java.lang.String filename

The name of the file to observe for changes.

delay

protected long delay

The delay to observe between every check. By default set .

file

java.io.File file

lastModif

long lastModif

fileLength

long fileLength

warnedAlready

boolean warnedAlready

interrupted

boolean interrupted

listenerList

java.util.List listenerList

watchdogs

static java.util.Hashtable watchdogs

Constructor Detail

FileWatchdog

protected FileWatchdog(java.lang.String filename)

Method Detail

getFileWatchdog

public static FileWatchdog getFileWatchdog(java.lang.String filename,
                                           boolean create)

setDelay

public void setDelay(long delay)

Set the delay to observe between each check of the file changes.

addListener

public void addListener(FileChageListener fileChageListener)

doOnChange

public void doOnChange()

fileDetected

protected boolean fileDetected()

checkAndConfigure

protected void checkAndConfigure(boolean callOnChange)

finish

public void finish()

run

public void run()