source: protocol/src/main/java/geniusweb/protocol/session/mopac2/MOPAC2Settings.java@ 52

package geniusweb.protocol.session.mopac2;

import java.util.Collections;
import java.util.LinkedList;
import java.util.List;
import java.util.stream.Collectors;

import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;

import geniusweb.deadline.Deadline;
import geniusweb.protocol.session.SessionSettings;
import geniusweb.protocol.session.TeamInfo;
import geniusweb.references.PartyWithProfile;
import geniusweb.voting.VotingEvaluator;
import geniusweb.voting.VotingEvaluatorWithValue;
import tudelft.utilities.logging.Reporter;

/**
 * Settings for MOPAC negotiation. in MOPAC, each party may get a "power"
 * parameter containing an natural number ≤1.
 */
public class MOPAC2Settings implements SessionSettings {
        private final List<TeamInfo> participants;
        private final Deadline deadline;
        private final VotingEvaluatorWithValue votingevaluator;

        /**
         * 
         * @param participants the list of {@link PartyWithProfile} in clockwise
         *                     order. There must be at least 2 to run the MOPAC
         *                     protocol. This is not tested in the constructor
         *                     because this can be initialized with less, for use in
         *                     TournamentSettings.
         * @param deadline     the {@link Deadline} for the negotiation
         * @param votingeval   the {@link VotingEvaluator} to use.
         */
        @JsonCreator
        public MOPAC2Settings(
                        @JsonProperty("participants") List<TeamInfo> participants,
                        @JsonProperty("deadline") Deadline deadline,
                        @JsonProperty("votingevaluator") VotingEvaluatorWithValue votingeval) {
                this.participants = participants;
                this.deadline = deadline;
                if (participants == null || deadline == null || votingeval == null)
                        throw new IllegalArgumentException(
                                        "participants, deadline and votingeval must be not null");
                this.votingevaluator = votingeval;
                checkTeams();
        }

        @Override
        public Double getMaxRunTime() {
                return deadline.getDuration() / 1000d;
        }

        @Override
        public MOPAC2 getProtocol(Reporter logger) {
                return new MOPAC2(new MOPAC2State(this), logger);
        }

        @Override
        public List<TeamInfo> getTeams() {
                return Collections.unmodifiableList(participants);
        }

        /**
         * @return the deadline for this negotiation
         */
        public Deadline getDeadline() {
                return deadline;
        }

        @Override
        public List<PartyWithProfile> getAllParties() {
                return participants.stream()
                                .map(particip -> particip.getParties().get(0))
                                .collect(Collectors.toList());
        }

        /**
         * @return a class that allows us to evaluate the voting results in
         *         different ways, selectable by the user.
         */
        public VotingEvaluatorWithValue getVotingEvaluation() {
                return votingevaluator;
        }

        @Override
        public MOPAC2Settings with(TeamInfo team) {
                if (team.getSize() != 1)
                        throw new IllegalArgumentException(
                                        "Added party must be OnePartyTeam but got " + team);
                List<TeamInfo> newparts = new LinkedList<>(
                                participants);
                newparts.add(team);
                return new MOPAC2Settings(newparts, deadline, votingevaluator);
        }

        @Override
        public Integer getTeamSize() {
                return 1;
        }

        @Override
        public String toString() {
                return "MOPAC2Settings[" + participants + "," + deadline + ","
                                + votingevaluator.getClass().getSimpleName() + "]";
        }

        @Override
        public int hashCode() {
                final int prime = 31;
                int result = 1;
                result = prime * result
                                + ((deadline == null) ? 0 : deadline.hashCode());
                result = prime * result
                                + ((participants == null) ? 0 : participants.hashCode());
                result = prime * result
                                + ((votingevaluator == null) ? 0 : votingevaluator.hashCode());
                return result;
        }

        @Override
        public boolean equals(Object obj) {
                if (this == obj)
                        return true;
                if (obj == null)
                        return false;
                if (getClass() != obj.getClass())
                        return false;
                MOPAC2Settings other = (MOPAC2Settings) obj;
                if (deadline == null) {
                        if (other.deadline != null)
                                return false;
                } else if (!deadline.equals(other.deadline))
                        return false;
                if (participants == null) {
                        if (other.participants != null)
                                return false;
                } else if (!participants.equals(other.participants))
                        return false;
                if (votingevaluator == null) {
                        if (other.votingevaluator != null)
                                return false;
                } else if (!votingevaluator.equals(other.votingevaluator))
                        return false;
                return true;
        }

        /**
         * @throws IllegalArgumentException if teams have improper power settings.
         */
        private void checkTeams() {
                for (TeamInfo team : participants) {
                        if (team.getSize() != 1)
                                throw new IllegalArgumentException(
                                                "All teams must be size 1 but found " + team);
                        PartyWithProfile party = team.getParties().get(0);
                        Object power = party.getParty().getParameters().get("power");
                        if (power != null) {
                                if (!(power instanceof Integer))
                                        throw new IllegalArgumentException(
                                                        "parameter 'power' for party" + party
                                                                        + " must be integer but found " + power);
                                if ((Integer) power < 1)
                                        throw new IllegalArgumentException(
                                                        "parameter 'power'  for party" + party
                                                                        + " must be >=1 but found " + power);

                        }
                }
        }

}