1 /*
2 Copyright (C) 2006 Grid Systems, S.A.
3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License, version 2, as
6 published by the Free Software Foundation.
7
8 This program is distributed in the hope that it will be useful,
9 but WITHOUT ANY WARRANTY; without even the implied warranty of
10 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 GNU General Public License for more details.
12
13 You should have received a copy of the GNU General Public License
14 along with this program; if not, write to the Free Software
15 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
16 */
17 package com.gridsystems.beanfilter;
18
19 /**
20 * Value that represents a null value.
21 *
22 * @author Xmas
23 * @version 1.0
24 */
25 public class NullValue extends EvalValue {
26
27 /**
28 * Creates a new instance.
29 *
30 * @param token The token
31 */
32 public NullValue(Token token) {
33 super(token.beginLine, token.beginColumn);
34 }
35
36 /**
37 * {@inheritDoc}
38 */
39 @Override public Object getValue(Object parentValues) throws EvalException {
40 return null;
41 }
42
43 /**
44 * {@inheritDoc}
45 */
46 @Override public String toString() {
47 return "null";
48 }
49
50 /**
51 * {@inheritDoc}
52 */
53 @Override
54 public Class<?> getClassValue(Class<?> parentClass) throws EvalException {
55 return null;
56 }
57
58 }