edu.wisc.ssec.mcidasv.util.pathwatcher

Interface DirectoryWatchService

All Superinterfaces:

Service

All Known Implementing Classes:

SimpleDirectoryWatchService

public interface DirectoryWatchService
extends Service

Interface definition of a simple directory watch service. Implementations of this interface allow interested parties to listen to file system events coming from a specific directory.

Method Summary

Modifier and Type	Method and Description
void	register(OnFileChangeListener listener, String dirPath, String... globPatterns) Notifies the implementation of this interface that dirPath should be monitored for file system events.
void	start() Starts the service.
void	unregister(OnFileChangeListener listener) Notifies the implementation of this interface that listener should cease to be notified of file system events.
void	unregisterAll() Unregisters all listeners.

Methods inherited from interface edu.wisc.ssec.mcidasv.util.pathwatcher.Service

isRunning, stop

Method Detail

start

void start()

Description copied from interface: Service

Starts the service. This method blocks until the service has completely started.

Specified by:

start in interface Service

register

void register(OnFileChangeListener listener,
              String dirPath,
              String... globPatterns)
       throws IOException

Notifies the implementation of this interface that dirPath should be monitored for file system events. If the changed file matches any of the globPatterns, listener should be notified.

Parameters:

listener - The listener.

dirPath - The directory path.

globPatterns - Zero or more file patterns to be matched against file names. If none provided, matches any file.

Throws:

IOException - If dirPath is not a directory.

unregister

void unregister(OnFileChangeListener listener)

Notifies the implementation of this interface that listener should cease to be notified of file system events.

Parameters:

listener - Listener to unregister. Cannot be null.

unregisterAll

void unregisterAll()

Unregisters all listeners.