de.hpi.fgis.dude.util
Class FilenameManager

java.lang.Object
  de.hpi.fgis.dude.util.FilenameManager

public class FilenameManager
extends Object

The FilenameManager manages all filenames within a directory. It will check if a filename does already exist within the directory. If this is the case the FilenameManager will generate an alternative.

Author:

Matthias Pohl

Constructor Summary

FilenameManager(String directory)
Initializes a FilenameManager for the passed directory.

Method Summary

String

getNextValidFilename(String baseFilename) Returns a valid alternative for the passed filename.

Methods inherited from class java.lang.Object

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

Constructor Detail

FilenameManager

public FilenameManager(String directory)

Initializes a FilenameManager for the passed directory.

Parameters:

directory - The directory that will be managed.

Throws:

IllegalArgumentException - If a String was passed that is no directory path.

Method Detail

getNextValidFilename

public String getNextValidFilename(String baseFilename)

Returns a valid alternative for the passed filename.

Parameters:

baseFilename - The file for which an alternative is requested. If the observed directory does not contain a file with such a name, the passed filename will be the return value.

Returns:

A valid filename for the observed directory. This alternative can be the passed filename, if there is no file with the given name, or the passed filename concatenated with an integer value.