myfipacontractnetresponderbehaviour.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 java.util.Date;
import java.util.Iterator;

import jade.util.leap.List;
import jade.core.Agent;
import jade.lang.acl.ACLMessage;
import jade.proto.ContractNetResponder;
import jade.domain.FIPAException;

import jade.domain.FIPAAgentManagement.NotUnderstoodException;
import jade.domain.FIPAAgentManagement.RefuseException;
import jade.domain.FIPAAgentManagement.FailureException;
import jade.domain.FIPANames;


import demo.MeetingScheduler.Ontology.Appointment;

/**
Javadoc documentation for the file
@author Fabio Bellifemine - CSELT S.p.A
@version $Date: 2003-03-19 16:07:33 +0100 (mer, 19 mar 2003) $ $Revision: 3843 $
*/
public class myFipaContractNetResponderBehaviour extends ContractNetResponder {

MeetingSchedulerAgent myAgent;

public myFipaContractNetResponderBehaviour(MeetingSchedulerAgent a) {
super(a,createMessageTemplate(FIPANames.InteractionProtocol.FIPA_CONTRACT_NET));
myAgent = a;
}

protected void handleOutOfSequence(ACLMessage cfp,ACLMessage propose,ACLMessage outOfSequenceMsg){
 System.err.println(myAgent.getLocalName()+":myFipaContractNetResponder:received out of sequence message"+outOfSequenceMsg.toString());
}

protected ACLMessage prepareResultNotification(ACLMessage cfp, ACLMessage propose,ACLMessage msg ) throws FailureException {

   ACLMessage reply = msg.createReply();
   try {
     Appointment app = myAgent.extractAppointment(msg); 
     if (myAgent.isFree(app.getFixedDate())) {
       myAgent.addMyAppointment(app);
       reply.setPerformative(ACLMessage.INFORM);
     } else 
       reply.setPerformative(ACLMessage.FAILURE);
   } catch (FIPAException e) {
     e.printStackTrace();
     reply.setPerformative(ACLMessage.NOT_UNDERSTOOD);
     reply.setContent(e.getMessage());
   }
   return reply;
 }



 protected void handleRejectProposal(ACLMessage cfp,ACLMessage propose,ACLMessage msg){
    System.err.println(myAgent.getLocalName()+":FipaContractNetResponder: the proposal has been rejected with this message"+msg.toString());
 }

 protected ACLMessage prepareResponse(ACLMessage cfp) throws NotUnderstoodException, RefuseException {
    ACLMessage propose = cfp.createReply();

   try {
     Appointment app = myAgent.extractAppointment(cfp); 
     Appointment proposal = (Appointment)app.clone();
     proposal.clearAllPossibleDates();
     for (Iterator i=app.getAllPossibleDates(); i.hasNext(); ) {
       Date d = (Date)i.next();
       if (myAgent.isFree(d))
	 proposal.addPossibleDates(d);
     }

     if (proposal.getAllPossibleDates().hasNext()) {
       // there is at least one possible date that is ok for me
       propose.setPerformative(ACLMessage.PROPOSE);
       myAgent.fillAppointment(propose,proposal);
     } else {
       propose.setPerformative(ACLMessage.REFUSE);
       propose.setContent("( noavailabledate)");
     }
   } catch (FIPAException e) {
     e.printStackTrace();
     propose.setPerformative(ACLMessage.NOT_UNDERSTOOD);
     propose.setContent(e.getMessage());
   }
   return propose;
 }

}