myfipacontractnetinitiatorbehaviour.java

JADE(JAVA Agent开发框架)是一个完全由JAVA语言开发的软件,它简化了多Agent系统的实现。

/*****************************************************************
JADE - Java Agent DEvelopment Framework is a framework to develop multi-agent systems in compliance with the FIPA specifications.
Copyright (C) 2000 CSELT S.p.A. 

GNU Lesser General Public License

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation, 
version 2.1 of the License. 

This library 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
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA  02111-1307, USA.
*****************************************************************/

package demo.MeetingScheduler;

import jade.util.leap.*;
import java.util.Vector;
import java.util.Date;
import java.util.Calendar;

import jade.lang.acl.ACLMessage;
import jade.core.*;
import jade.proto.ContractNetInitiator;
import jade.domain.FIPAException;

import jade.domain.FIPANames;

import demo.MeetingScheduler.Ontology.*;
import jade.domain.FIPANames;
/**

@author Fabio Bellifemine - CSELT S.p.A
@version $Date: 2003-03-19 16:07:33 +0100 (mer, 19 mar 2003) $ $Revision: 3843 $
*/

public class myFipaContractNetInitiatorBehaviour extends ContractNetInitiator {

  private ACLMessage cfpMsg = new ACLMessage(ACLMessage.CFP);
  private final static long TIMEOUT = 60000; // 1 minute
  private Appointment pendingApp;
  private MeetingSchedulerAgent myAgent;

  
  public myFipaContractNetInitiatorBehaviour(MeetingSchedulerAgent a, Appointment app, List group) {
      super(a, null);
      myAgent=a;
           // fill the fields of the cfp message
      cfpMsg.setLanguage(FIPANames.ContentLanguage.FIPA_SL0);
      cfpMsg.setOntology(MSOntology.NAME);
      cfpMsg.setReplyByDate(new Date(System.currentTimeMillis()+TIMEOUT));
      cfpMsg.setProtocol(FIPANames.InteractionProtocol.FIPA_CONTRACT_NET);
      Iterator i = group.iterator();
      while (i.hasNext()) {
					cfpMsg.addReceiver((AID)i.next());
      }
      
      try {// fill the content
	myAgent.fillAppointment(cfpMsg,app);
      } catch (FIPAException e) {
	e.printStackTrace();
	myAgent.doDelete();
      }
      pendingApp = (Appointment)app.clone();
      //reset(cfpMsg); // updates the message to be sent
      System.out.println("myFipaContractNetInitiatorBehaviour msg:"+cfpMsg); 
    }

    protected Vector prepareCfps(ACLMessage cfp) {
	Vector v = new Vector(1);
	v.addElement(cfpMsg);
	return v;
    }  
protected void handleNotUnderstood(ACLMessage msg) {
    System.err.println("!!! ContractNetInitiator handleNotUnderstood: "+msg.toString());
}
  
protected void handleOutOfSequence(ACLMessage msg) {
    System.err.println("!!! ContractNetInitiator handleOutOfSequence: "+msg.toString());
}

protected void handleRefuse(ACLMessage msg) {
    System.err.println("!!! ContractNetInitiator received Refuse: "+msg.toString());
}


protected void handleAllResponses(Vector proposals,Vector retMsgs) {
    //System.err.println(myAgent.getLocalName()+": FipacontractNetInitiator is evaluating the proposals");
  ACLMessage msg;
  ArrayList acceptableDates = new ArrayList();
  ArrayList acceptedDates = new ArrayList();
  
  if (proposals.size()==0)
    return;

  Calendar c = Calendar.getInstance();

  for (Iterator i=pendingApp.getAllPossibleDates(); i.hasNext(); ) {
    //acceptableDates.add(new Integer(((Date)i.next()).getDate()));
    c.setTime((Date)i.next());
    acceptableDates.add(new Integer(c.get(c.DATE)));
    
}
  for (int i=0; i<proposals.size(); i++) {
    //System.err.println("EvaluateProposals, start round "+i+" acceptableDates = "+acceptableDates.toString());
    msg = (ACLMessage)proposals.elementAt(i);
    if (msg.getPerformative() == ACLMessage.PROPOSE) {
      acceptedDates = new ArrayList();
      
      try {
	Appointment a = myAgent.extractAppointment(msg);
	for (Iterator ii=a.getAllPossibleDates(); ii.hasNext(); ) {
	  c.setTime((Date)ii.next());
	  Integer day = new Integer(c.get(c.DATE));
	  if (acceptableDates.contains(day))
	    acceptedDates.add(day);
	}
	acceptableDates = (ArrayList)acceptedDates.clone();
	if (msg.getReplyWith() != null)
	  msg.setInReplyTo(msg.getReplyWith());
	msg.clearAllReceiver();
	msg.addReceiver(msg.getSender());
	msg.setSender(myAgent.getAID());
	retMsgs.addElement(msg);
      } catch (FIPAException e) {
	e.printStackTrace();
      }
    } // end if "propose"
  } // end of for proposals.size()   
  //System.err.println("EvaluateProposals, end rounds acceptableDates = "+acceptableDates.toString());

  ACLMessage replyMsg = new ACLMessage(ACLMessage.ACCEPT_PROPOSAL);
  replyMsg.setLanguage(FIPANames.ContentLanguage.FIPA_SL0);
  replyMsg.setOntology(MSOntology.NAME);
  if (acceptableDates.size() > 0) {
    Date d = new Date();
    int dateNumber = ((Integer)acceptableDates.get(0)).intValue();
    //d.setDate(dateNumber);
    c.set(c.DATE , dateNumber);
    pendingApp.setFixedDate(c.getTime());
    try {
      myAgent.fillAppointment(replyMsg,pendingApp);
    } catch (FIPAException e) {
      e.printStackTrace();
      myAgent.doDelete();
    }
  } else 
    replyMsg.setPerformative(ACLMessage.REJECT_PROPOSAL);
  
  for (int i=0; i<retMsgs.size(); i++) {
    ((ACLMessage)retMsgs.elementAt(i)).setPerformative(replyMsg.getPerformative());
    ((ACLMessage)retMsgs.elementAt(i)).setContent(replyMsg.getContent()); 
  }
  
}
  
public void handleAllResultNotifications(Vector messages) {
  // I here receive failure or inform-done
  ACLMessage msg;
  boolean accepted=false;
  Person p;
  pendingApp.clearAllInvitedPersons();
  for (int i=0; i<messages.size(); i++) {    
    msg = (ACLMessage)messages.elementAt(i);
    if (msg.getPerformative() == ACLMessage.INFORM) {
      accepted = true;
      p = myAgent.getPersonbyAgentName(msg.getSender());
      if (p == null) 
	p = new Person(msg.getSender().getName(),null,null);
      pendingApp.addInvitedPersons(p);
    }
  }
  if (accepted)
    myAgent.addMyAppointment(pendingApp);            
  
  }
}