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.util.*;
31
32 public class DefaultInitiatorEvaluator extends StrategyEvaluator {
33 // parameters
34 double reserve_price = 0;
35 double expected_cost = 0;
36
37 public int evaluateFirst(Vector goals, ProtocolDbResult info) {
38 this.goals = goals;
39 this.protocolInfo = info;
40
41 reserve_price = getDoubleParam("reservation.price",Double.MAX_VALUE);
42
43 Goal g = (Goal)goals.elementAt(0);
44 expected_cost = g.getCost();
45
46 g.setCost(0);
47
48 return MESSAGE;
49 }
50
51 public int evaluateNext(DelegationStruct ds) {
52 this.goals = ds.goals;
53
54 Goal g = (Goal)goals.elementAt(0);
55 return (ds.msg_type.equals("propose") && g.getCost() <= reserve_price)
56 ? OK : FAIL;
57 }
58 }