1 /***
2 * ***************************************************************
3 * JADE - Java Agent DEvelopment Framework is a framework to develop
4 * multi-agent systems in compliance with the FIPA specifications.
5 * Copyright (C) 2000 CSELT S.p.A.
6 *
7 * GNU Lesser General Public License
8 *
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation,
12 * version 2.1 of the License.
13 *
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this library; if not, write to the
21 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
22 * Boston, MA 02111-1307, USA.
23 * **************************************************************
24 */
25 package JADE_SL.abs;
26
27 import JADE_SL.schema.*;
28
29 /***
30 * @author Federico Bergenti - Universita` di Parma
31 */
32 public class AbsVariable extends AbsObjectImpl implements AbsTerm {
33
34 /***
35 * Construct an Abstract descriptor to hold a variable
36 */
37 public AbsVariable() {
38 super(VariableSchema.BASE_NAME);
39 }
40
41 /***
42 * Construct an AbsVariable with the given name and value type
43 * @param name The name of the variable.
44 * @param valueType The type of values that can be assigned to
45 * this variable.
46 *
47 */
48 public AbsVariable(String name, String valueType) {
49 super(VariableSchema.BASE_NAME);
50
51 setName(name);
52 setType(valueType);
53 }
54
55 /***
56 * Sets the name of this variable.
57 * @param name The new name of this variable.
58 */
59 public void setName(String name) {
60 set(VariableSchema.NAME, AbsPrimitive.wrap(name));
61 }
62
63 /***
64 * Sets the value type of this variable.
65 * @param valueType The type of values that can be assigned to
66 * this variable.
67 */
68 public void setType(String valueType) {
69 set(VariableSchema.VALUE_TYPE, AbsPrimitive.wrap(valueType));
70 }
71
72 /***
73 * Gets the name of this variable.
74 * @return The name of this variable.
75 */
76 public String getName() {
77 AbsPrimitive abs = (AbsPrimitive) getAbsObject(VariableSchema.NAME);
78 if (abs != null) {
79 return abs.getString();
80 }
81 else {
82 return null;
83 }
84 }
85
86 /***
87 * Gets the value type of this variable.
88 * @return The type of values that can be assigned to
89 * this variable.
90 */
91 public String getType() {
92 AbsPrimitive abs = (AbsPrimitive) getAbsObject(VariableSchema.VALUE_TYPE);
93 if (abs != null) {
94 return abs.getString();
95 }
96 else {
97 return null;
98 }
99 }
100
101 /***
102 * Redefine the <code>isGrounded()</code> method in order to
103 * always return <code>false</code>.
104 */
105 public boolean isGrounded() {
106 return false;
107 }
108
109 }
110