1 /*
2 * Copyright (C) 2013 4th Line GmbH, Switzerland
3 *
4 * The contents of this file are subject to the terms of either the GNU
5 * Lesser General Public License Version 2 or later ("LGPL") or the
6 * Common Development and Distribution License Version 1 or later
7 * ("CDDL") (collectively, the "License"). You may not use this file
8 * except in compliance with the License. See LICENSE.txt for more
9 * information.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
14 */
15
16 package org.fourthline.cling.model.types;
17
18 /**
19 * @author Christian Bauer
20 */
21 public class StringDatatype extends AbstractDatatype<String> {
22
23 public StringDatatype() {
24 }
25
26 public String valueOf(String s) throws InvalidValueException {
27 if (s.equals("")) return null;
28 return s;
29 }
30
31 }