}
private void purgeFiles( File directory, String directoryType, int daysOlder, int retentionCount )
{
AndFileFilter filter = new AndFileFilter();
filter.addFileFilter( DirectoryFileFilter.DIRECTORY );
filter.addFileFilter( createFileFilterForDirectoryType( directoryType ) );
File[] files = directory.listFiles( (FileFilter) filter );
if ( files == null )