1 /*
2 * The contents of this file are subject to the BT "ZEUS" Open Source
3 * Licence (L77741), Version 1.0 (the "Licence"); you may not use this file
4 * except in compliance with the Licence. You may obtain a copy of the Licence
5 * from $ZEUS_INSTALL/licence.html or alternatively from
6 * http://www.labs.bt.com/projects/agents/zeus/licence.htm
7 *
8 * Except as stated in Clause 7 of the Licence, software distributed under the
9 * Licence is distributed WITHOUT WARRANTY OF ANY KIND, either express or
10 * implied. See the Licence for the specific language governing rights and
11 * limitations under the Licence.
12 *
13 * The Original Code is within the package zeus.*.
14 * The Initial Developer of the Original Code is British Telecommunications
15 * public limited company, whose registered office is at 81 Newgate Street,
16 * London, EC1A 7AJ, England. Portions created by British Telecommunications
17 * public limited company are Copyright 1996-9. All Rights Reserved.
18 *
19 * THIS NOTICE MUST BE INCLUDED ON ANY COPY OF THIS FILE
20 */
21 /*
22 * @(#)s7.java 1.03b
23 */
24
25
26 package zeus.actors.graphs;
27
28 import java.util.*;
29 import zeus.util.*;
30 import zeus.concepts.*;
31 import zeus.actors.*;
32 import zeus.actors.rtn.*;
33 import zeus.actors.rtn.util.*;
34
35 public class s7 extends Node {
36 /***
37 This node rejects (i.e. refuses) the cfp of a 'parent' agent
38 during a negotiation dialogue
39 */
40
41 // ST 050500 1.03bB node description due to CVB
42 private String node_desc = "do/refuse cfp";
43
44
45 public final String getDesc()
46 {return node_desc;}
47
48
49 public final void setDesc(String node_desc)
50 {this.node_desc = node_desc;}
51 // ST 050500 1.03bE
52
53 public s7() {
54 super("s7");
55 }
56
57 // memory useful for backtracking
58
59 protected int exec() {
60 Planner table = context.Planner();
61 Engine engine = context.Engine();
62
63 GraphStruct gs = (GraphStruct)input;
64 Goal g = (Goal) gs.goal.firstElement();
65 double now = context.now();
66 double rt = g.getReplyTime().getTime();
67 if ( rt > now )
68 engine.continue_dialogue(gs.key,gs.agent,"refuse",gs.goal);
69
70 table.reject(gs.goal,gs.internal);
71 return OK;
72 }
73 protected void reset() {
74 // reset any state changed by exec()
75 }
76 }