source: src/test/java/agents/nastyagent/NastyAgent.java@ 50

package agents.nastyagent;

import java.util.List;

import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;

import genius.core.Agent;
import genius.core.AgentID;
import genius.core.Bid;
import genius.core.BidIterator;
import genius.core.actions.Action;
import genius.core.actions.Offer;
import genius.core.parties.NegotiationInfo;
import genius.core.parties.NegotiationParty;
import genius.core.persistent.PersistentDataContainer;
import genius.core.protocol.DefaultMultilateralProtocol;
import genius.core.protocol.StackedAlternatingOffersProtocol;
import genius.core.utility.AbstractUtilitySpace;

/**
 * NastyAgent is an agent with nasty behaviour: throws, returns silly actions,
 * goes to sleep for long times. This is for testing if Genius is robust for
 * such cases. If not nasty, this agent just places bids ordered by decreasing
 * utility.
 * <p>
 * This is an abstract class without any actual nastyness. This is because
 * {@link NegotiationParty} does not support parameterization anymore (unlike
 * {@link Agent}. The actual (non-abstract) implementations do the nastyness.
 * 
 * @author W.Pasman.
 * 
 */
public abstract class NastyAgent implements NegotiationParty {

        ArrayList<Bid> bids = new ArrayList<Bid>(); // the bids that we MAY place.
        Iterator<Bid> bidIterator; // next bid that we can place. Iterator over
        // bids.
        protected AgentID id;
        protected Action lastReceivedAction;
        protected boolean ended = false; // used to check if the nego was ended
                                                                                // properly
        protected PersistentDataContainer data;
        protected AbstractUtilitySpace utilitySpace;

        @Override
        public void init(NegotiationInfo info) 
        {
                this.id = info.getAgentID();
                this.data = info.getPersistentData();
                this.utilitySpace = info.getUtilitySpace();

                BidIterator biter = new BidIterator(utilitySpace.getDomain());
                while (biter.hasNext())
                        bids.add(biter.next());
                Collections.sort(bids, new BidComparator(utilitySpace));
                bidIterator = bids.iterator();

        }

        @Override
        public Action chooseAction(List<Class<? extends Action>> possibleActions) {
                if (bidIterator.hasNext()) {
                        return new Offer(id, bidIterator.next());
                }
                return null;
        }

        @Override
        public void receiveMessage(AgentID sender, Action action) {
                this.lastReceivedAction = action;
        }

        @Override
        public String getDescription() {
                return this.getClass().getSimpleName();
        }

        @Override
        public Class<? extends DefaultMultilateralProtocol> getProtocol() {
                return StackedAlternatingOffersProtocol.class;
        }

        @Override
        public HashMap<String, String> negotiationEnded(Bid acceptedBid) {
                ended = true;
                return null;
        }

        public boolean isEnded() {
                return ended;
        }

}