/interpreter/tags/at2-build190607/src/edu/vub/at/actors/id/ActorID.java

 1/**
 2 * AmbientTalk/2 Project
 3 * ActorID.java created on 17-mrt-2007 at 15:50:03
 4 * (c) Programming Technology Lab, 2006 - 2007
 5 * Authors: Tom Van Cutsem & Stijn Mostinckx
 6 * 
 7 * Permission is hereby granted, free of charge, to any person
 8 * obtaining a copy of this software and associated documentation
 9 * files (the "Software"), to deal in the Software without
10 * restriction, including without limitation the rights to use,
11 * copy, modify, merge, publish, distribute, sublicense, and/or
12 * sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following
14 * conditions:
15 *
16 * The above copyright notice and this permission notice shall be
17 * included in all copies or substantial portions of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
20 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
21 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
22 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
23 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
24 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
25 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
26 * OTHER DEALINGS IN THE SOFTWARE.
27 */
28package edu.vub.at.actors.id;
29
30import java.io.Serializable;
31import java.util.Random;
32
33/**
34 * An ActorID is a serializable representation of the identity of an actor.
35 * Meant to uniquely identify an actor on one AmbientTalk virtual machine.
36 * Identity implemented by a pseudo-randomly generated integer.
37 * 
38 * @author tvcutsem
39 */
40public final class ActorID implements Serializable {
41
42	private static final Random generator_ = new Random(System.currentTimeMillis());
43	
44	private final int id_;
45	
46	public ActorID() {
47		id_ = generator_.nextInt();
48	}
49	
50	public boolean equals(Object other) {
51		return ((other instanceof ActorID) && ((ActorID) other).id_ == id_);
52	}
53	
54	public int hashCode() {
55		return id_;
56	}
57	
58	public String toString() {
59		return "actorid["+id_+"]";
60	}
61	
62}