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;
25
26 import java.util.*;
27 import zeus.util.*;
28 import zeus.concepts.*;
29
30
31 public class RootNode extends MsgNode {
32
33 public RootNode () {
34 ;
35 }
36
37 public RootNode(MsgHandler engine) {
38 super(engine);
39 }
40
41 public void evaluate(String path, Performative input) {
42 Assert.notFalse(path == null);
43 propagate(path,input);
44 }
45
46 public void propagate(String path, Performative input) {
47 StringBuffer err = new StringBuffer (40);
48 err.append ("\nMsgHandler Propagate: ");
49 err.append (path);
50 err.append (" RootNode");
51 Core.DEBUG(4,err);
52 Enumeration keys = successors.keys();
53 MsgNode node;
54 while( keys.hasMoreElements() ) {
55 path = (String)keys.nextElement();
56 node = (MsgNode)successors.get(path);
57 err = new StringBuffer (40);
58 err.append ("\nRootNode about to evaluate: ");
59 err.append (path);
60 err.append (" ");
61 err.append (node.toString());
62 Core.DEBUG (4, err); //(4,"\nRootNode about to evaluate: " + path + " " + node);
63 // System.out.println("RootNote about to evaluate: " + path + " " + node);
64 node.evaluate(path,input);
65 }
66 }
67
68 public String toString() {
69 return "RootNode()";
70 }
71 }