if(args[1].getLength() == 0) return BooleanValue.FALSE;
	public Sequence eval(Sequence[] args, Sequence contextSequence)		throws XPathException {		String uri = args[0].getStringValue();		String user = args[1].getStringValue();		String password = args[2].getStringValue();				try {			Collection root = DatabaseManager.getCollection(uri, user, password);			return BooleanValue.TRUE;		} catch (XMLDBException e) {			return BooleanValue.FALSE;		}	}