/**
* @see org.apache.james.nntpserver.NNTPGroup#getArticlesSince(Date)
*/
public Iterator getArticlesSince(Date dt) {
File[] f = root.listFiles(new AndFileFilter
(new DateSinceFileFilter(dt.getTime()),
new InvertedFileFilter(new ExtensionFileFilter(".id"))));
List list = new ArrayList();
for ( int i = 0 ; i < f.length ; i++ ) {
list.add(new NNTPArticleImpl(this, f[i]));
}