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
23
24 package zeus.actors.graphs;
25
26 import java.util.*;
27 import zeus.util.*;
28 import zeus.concepts.*;
29 import zeus.actors.*;
30 import zeus.actors.rtn.*;
31 import zeus.actors.rtn.util.*;
32
33 public class Sd extends Node {
34 public Sd() {
35 super("Sd");
36 }
37
38 // memory useful for backtracking
39
40 protected int exec() {
41 Engine engine = context.Engine();
42 Planner table = context.Planner();
43 DelegationStruct ds;
44 GraphStruct gs;
45
46 if ( input instanceof GraphStruct ) {
47 gs = (GraphStruct)input;
48 }
49 else {
50 Object[] data = (Object[]) input;
51 gs = ((DStruct)data[0]).gs;
52 }
53
54 for(int i = 0; i < gs.selection.size(); i++ ) {
55 ds = (DelegationStruct) gs.selection.elementAt(i);
56 engine.continue_dialogue(ds.key,ds.agent,"reject-proposal",ds.goals);
57 }
58 table.clear_bind(gs.goal);
59 output = gs;
60 return OK;
61 }
62 protected void reset() {
63 // reset any state changed by exec()
64 }
65 }