Source code: com/tripi/asp/ConstValue.java
1 /**
2 * ArrowHead ASP Server
3 * This is a source file for the ArrowHead ASP Server - an 100% Java
4 * VBScript interpreter and ASP server.
5 *
6 * For more information, see http://www.tripi.com/arrowhead
7 *
8 * Copyright (C) 2002 Terence Haddock
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 *
24 */
25 package com.tripi.asp;
26
27 /**
28 * ConstValue handles constant values, preventing changing the value.
29 *
30 * @author Terence Haddock
31 * @version 0.9
32 */
33 public class ConstValue implements SimpleReference
34 {
35 /** Value this constant contains */
36 Object value;
37
38 /**
39 * Constructor.
40 * @param value Value this constant contains.
41 */
42 public ConstValue(Object value)
43 {
44 this.value = value;
45 }
46
47 /**
48 * Sets the value of this variable, throws an error for these
49 * constant values.
50 * @param value New value for this node.
51 * @throws AspReadOnlyException when called.
52 * @see SimpleReference#setValue
53 */
54 public void setValue(Object value) throws AspException
55 {
56 throw new AspReadOnlyException("Constant expression");
57 }
58
59 /**
60 * Obtains the value of this variable
61 * @return Value of this expression.
62 * @see SimpleReference#getValue
63 */
64 public Object getValue() throws AspException
65 {
66 return value;
67 }
68 };
69