de.dante.extex.scanner.stream.observer.file
Class OpenFileObserverList

java.lang.Object
  de.dante.extex.scanner.stream.observer.file.OpenFileObserverList

All Implemented Interfaces:

OpenFileObserver

public final class OpenFileObserverList

extends java.lang.Object

implements OpenFileObserver

This class provides a type-safe list of observers for the open file event.

Version:

$Revision: 1.4 $

Author:

Gerd Neugebauer

OpenFileObserverList

public OpenFileObserverList()

register

public static OpenFileObserver register(OpenFileObserver list,
                                        OpenFileObserver observer)

Take a list and add an observer. If the list is null then a new one is created.

Parameters:

list - the input list or null

observer - the observer to add

Returns:

the input list or a new one with the observer added

add

public void add(OpenFileObserver observer)

Add an observer to the list.

Parameters:

observer - the observer to add to the list

update

public void update(java.lang.String filename,
                   java.lang.String filetype,
                   java.io.InputStream stream)

Invoke all observers on the list to inform them of the file which has been opened.

Specified by:

update in interface OpenFileObserver

Parameters:

filename - the name of the file to be opened

filetype - the type of the file to be opened. The type is resolved via the configuration to a file name pattern

stream - the input stream to read from

See Also:

OpenFileObserver.update( java.lang.String, java.lang.String, java.io.InputStream)