/*
* @Message.java 0.0.1, 1/1/2000
*
* THIS PROGRAM IS FREE SOFTWARE; YOU CAN DISTRIBUTED IT AND/OR
* MODIFY IT UNDER THE TERMS OF THE GNU GENERAL PUBLIC LICENSE
* AS PUBLISHED BY THE FREE SOFTWARE FOUNDATION.
*
* THIS PROGRAM IS DISTRIBUTED IN THE HOPE THAT IT WILL BE USEFUL,
* BUT WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED WARRANTY OF
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. SEE THE
* GNU GENERAL PUBLIC LICENSE FOR MORE DETAILS.
*
* Copyright (c) 2000 Cheng-Zhong Xu. All Rights Reserved.
*/
package naplet.message;
import naplet.*;
/**
* The Message class provides a wrapped message
* with an inclusion of sender and receiver identifiers.
*
* @version 0.0.1, 1/1/2000
* @author C. Xu
*/
public class Message implements java.io.Serializable {
public static final int USER = 0;
public static final int TERMINATE = 1;
public static final int TERMINATE_ACK = 2;
public static final int SUSPEND = 3;
public static final int SUSPEND_ACK = 4;
public static final int RESUME = 5;
public static final int RESUME_ACK = 6;
public static final int RESTART = 7;
public static final int RESTART_ACK = 8;
private NapletID sender;
private NapletID receiver;
private int type;
private String message;
/**
* Constructor. Default message type is USER
* @param sendID NapletID of sender
* @param recvID NapletID of receiver
* @param msg Context of message
*/
public Message( NapletID sendID, NapletID recvID, String msg) {
this(USER, sendID, recvID, msg);
}
/**
* Constructor
* @param type Message type, MessageType.SYSTEM or USER
* @param sendID NapletID of sender
* @param recvID NapletID of receiver
* @param msg Context of message
*/
public Message( int type, NapletID sendID, NapletID recvID, String msg) {
this.type = type;
sender = sendID;
receiver = recvID;
message = msg;
}
public NapletID getSender() {return sender;}
public NapletID getReceiver() {return receiver;}
public String getMessage() { return message; }
public int getType() { return type; }
}
