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OptaPlanner solves planning problems. This lightweight, embeddable planning engine implements powerful and scalable algorithms to optimize business resource scheduling and planning. This module contains the examples which demonstrate how to use it in a normal Java application.
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package org.optaplanner.examples.examination.domain;

import org.optaplanner.core.api.domain.constraintweight.ConstraintConfiguration;
import org.optaplanner.core.api.domain.constraintweight.ConstraintWeight;
import org.optaplanner.core.api.score.buildin.hardsoft.HardSoftScore;
import org.optaplanner.examples.common.domain.AbstractPersistable;

import com.fasterxml.jackson.annotation.JsonIgnore;

/**
 * Institutional weightings.
 * Allows the user to recalibrate score weights.
 * 
 * Each {@link Examination} has only 1 instance of this class.
 */
@ConstraintConfiguration(constraintPackage = "org.optaplanner.examples.examination.score")
public class ExaminationConstraintConfiguration extends AbstractPersistable {
    // Hard constraints
    private int conflictingExamsInSamePeriodPenalty = 1;
    private int periodDurationTooShortPenalty = 1;
    private int roomCapacityTooSmallPenalty = 1;
    private int periodPenaltyExamCoincidencePenalty = 1;
    private int periodPenaltyExclusionPenalty = 1;
    private int periodPenaltyAfterPenalty = 1;
    private int roomPenaltyExclusivePenalty = 1;

    // Soft constraints
    private int twoInARowPenalty;
    private int twoInADayPenalty;
    private int periodSpreadLength;
    private int periodSpreadPenalty;
    private int mixedDurationPenalty;
    private int frontLoadLargeTopicSize;
    private int frontLoadLastPeriodSize;
    private int frontLoadPenalty;
    private int periodPenaltyPenalty = 1;
    private int roomPenaltyPenalty = 1;

    public ExaminationConstraintConfiguration() {
    }

    public ExaminationConstraintConfiguration(long id) {
        super(id);
    }

    // ************************************************************************
    // Constraint weight methods
    // ************************************************************************

    // Hard constraints
    @ConstraintWeight("conflictingExamsInSamePeriod")
    @JsonIgnore
    public HardSoftScore getConflictingExamsInSamePeriodPenaltyAsScore() {
        return HardSoftScore.ofHard(conflictingExamsInSamePeriodPenalty);
    }

    @ConstraintWeight("periodDurationTooShort")
    @JsonIgnore
    public HardSoftScore getPeriodDurationTooShortPenaltyAsScore() {
        return HardSoftScore.ofHard(periodDurationTooShortPenalty);
    }

    @ConstraintWeight("roomCapacityTooSmall")
    @JsonIgnore
    public HardSoftScore getRoomCapacityTooSmallPenaltyAsScore() {
        return HardSoftScore.ofHard(roomCapacityTooSmallPenalty);
    }

    @ConstraintWeight("periodPenaltyExamCoincidence")
    @JsonIgnore
    public HardSoftScore getPeriodPenaltyExamCoincidencePenaltyAsScore() {
        return HardSoftScore.ofHard(periodPenaltyExamCoincidencePenalty);
    }

    @ConstraintWeight("periodPenaltyExclusion")
    @JsonIgnore
    public HardSoftScore getPeriodPenaltyExclusionPenaltyAsScore() {
        return HardSoftScore.ofHard(periodPenaltyExclusionPenalty);
    }

    @ConstraintWeight("periodPenaltyAfter")
    @JsonIgnore
    public HardSoftScore getPeriodPenaltyAfterPenaltyAsScore() {
        return HardSoftScore.ofHard(periodPenaltyAfterPenalty);
    }

    @ConstraintWeight("roomPenaltyExclusive")
    @JsonIgnore
    public HardSoftScore getRoomPenaltyExclusivePenaltyAsScore() {
        return HardSoftScore.ofHard(roomPenaltyExclusivePenalty);
    }

    // Soft constraints
    @ConstraintWeight("twoExamsInARow")
    @JsonIgnore
    public HardSoftScore getTwoInARowPenaltyAsScore() {
        return HardSoftScore.ofSoft(twoInARowPenalty);
    }

    @ConstraintWeight("twoExamsInADay")
    @JsonIgnore
    public HardSoftScore getTwoInADayPenaltyAsScore() {
        return HardSoftScore.ofSoft(twoInADayPenalty);
    }

    @ConstraintWeight("periodSpread")
    @JsonIgnore
    public HardSoftScore getPeriodSpreadPenaltyAsScore() {
        return HardSoftScore.ofSoft(periodSpreadPenalty);
    }

    @ConstraintWeight("mixedDurations")
    @JsonIgnore
    public HardSoftScore getMixedDurationPenaltyAsScore() {
        return HardSoftScore.ofSoft(mixedDurationPenalty);
    }

    @ConstraintWeight("frontLoad")
    @JsonIgnore
    public HardSoftScore getFrontLoadPenaltyAsScore() {
        return HardSoftScore.ofSoft(frontLoadPenalty);
    }

    @ConstraintWeight("periodPenalty")
    @JsonIgnore
    public HardSoftScore getPeriodPenaltyPenaltyAsScore() {
        return HardSoftScore.ofSoft(periodPenaltyPenalty);
    }

    @ConstraintWeight("roomPenalty")
    @JsonIgnore
    public HardSoftScore getRoomPenaltyPenaltyAsScore() {
        return HardSoftScore.ofSoft(roomPenaltyPenalty);
    }

    // ************************************************************************
    // Getters and setters
    // ************************************************************************

    // Hard constraint functions
    public int getConflictingExamsInSamePeriodPenalty() {
        return conflictingExamsInSamePeriodPenalty;
    }

    public void setConflictingExamsInSamePeriodPenalty(int conflictingExamsInSamePeriodPenalty) {
        this.conflictingExamsInSamePeriodPenalty = conflictingExamsInSamePeriodPenalty;
    }

    public int getPeriodDurationTooShortPenalty() {
        return periodDurationTooShortPenalty;
    }

    public void setPeriodDurationTooShortPenalty(int periodDurationTooShortPenalty) {
        this.periodDurationTooShortPenalty = periodDurationTooShortPenalty;
    }

    public int getRoomCapacityTooSmallPenalty() {
        return roomCapacityTooSmallPenalty;
    }

    public void setRoomCapacityTooSmallPenalty(int roomCapacityTooSmallPenalty) {
        this.roomCapacityTooSmallPenalty = roomCapacityTooSmallPenalty;
    }

    public int getPeriodPenaltyExamCoincidencePenalty() {
        return periodPenaltyExamCoincidencePenalty;
    }

    public void setPeriodPenaltyExamCoincidencePenalty(int periodPenaltyExamCoincidencePenalty) {
        this.periodPenaltyExamCoincidencePenalty = periodPenaltyExamCoincidencePenalty;
    }

    public int getPeriodPenaltyExclusionPenalty() {
        return periodPenaltyExclusionPenalty;
    }

    public void setPeriodPenaltyExclusionPenalty(int periodPenaltyExclusionPenalty) {
        this.periodPenaltyExclusionPenalty = periodPenaltyExclusionPenalty;
    }

    public int getPeriodPenaltyAfterPenalty() {
        return periodPenaltyAfterPenalty;
    }

    public void setPeriodPenaltyAfterPenalty(int periodPenaltyAfterPenalty) {
        this.periodPenaltyAfterPenalty = periodPenaltyAfterPenalty;
    }

    public int getRoomPenaltyExclusivePenalty() {
        return roomPenaltyExclusivePenalty;
    }

    public void setRoomPenaltyExclusivePenalty(int roomPenaltyExclusivePenalty) {
        this.roomPenaltyExclusivePenalty = roomPenaltyExclusivePenalty;
    }

    // Soft constraint functions
    public int getTwoInARowPenalty() {
        return twoInARowPenalty;
    }

    public void setTwoInARowPenalty(int twoInARowPenalty) {
        this.twoInARowPenalty = twoInARowPenalty;
    }

    public int getTwoInADayPenalty() {
        return twoInADayPenalty;
    }

    public void setTwoInADayPenalty(int twoInADayPenalty) {
        this.twoInADayPenalty = twoInADayPenalty;
    }

    public int getPeriodSpreadLength() {
        return periodSpreadLength;
    }

    public void setPeriodSpreadLength(int periodSpreadLength) {
        this.periodSpreadLength = periodSpreadLength;
    }

    public int getPeriodSpreadPenalty() {
        return periodSpreadPenalty;
    }

    public void setPeriodSpreadPenalty(int periodSpreadPenalty) {
        this.periodSpreadPenalty = periodSpreadPenalty;
    }

    public int getMixedDurationPenalty() {
        return mixedDurationPenalty;
    }

    public void setMixedDurationPenalty(int mixedDurationPenalty) {
        this.mixedDurationPenalty = mixedDurationPenalty;
    }

    public int getFrontLoadLargeTopicSize() {
        return frontLoadLargeTopicSize;
    }

    public void setFrontLoadLargeTopicSize(int frontLoadLargeTopicSize) {
        this.frontLoadLargeTopicSize = frontLoadLargeTopicSize;
    }

    public int getFrontLoadLastPeriodSize() {
        return frontLoadLastPeriodSize;
    }

    public void setFrontLoadLastPeriodSize(int frontLoadLastPeriodSize) {
        this.frontLoadLastPeriodSize = frontLoadLastPeriodSize;
    }

    public int getFrontLoadPenalty() {
        return frontLoadPenalty;
    }

    public void setFrontLoadPenalty(int frontLoadPenalty) {
        this.frontLoadPenalty = frontLoadPenalty;
    }

    public int getPeriodPenaltyPenalty() {
        return periodPenaltyPenalty;
    }

    public void setPeriodPenaltyPenalty(int periodPenaltyPenalty) {
        this.periodPenaltyPenalty = periodPenaltyPenalty;
    }

    public int getRoomPenaltyPenalty() {
        return roomPenaltyPenalty;
    }

    public void setRoomPenaltyPenalty(int roomPenaltyPenalty) {
        this.roomPenaltyPenalty = roomPenaltyPenalty;
    }

    // ************************************************************************
    // With methods
    // ************************************************************************

    public ExaminationConstraintConfiguration withConflictingExamsInSamePeriodPenalty(int conflictingExamsInSamePeriodPenalty) {
        this.setConflictingExamsInSamePeriodPenalty(conflictingExamsInSamePeriodPenalty);
        return this;
    }

    public ExaminationConstraintConfiguration withPeriodDurationTooShortPenalty(int periodDurationTooShortPenalty) {
        this.setPeriodDurationTooShortPenalty(periodDurationTooShortPenalty);
        return this;
    }

    public ExaminationConstraintConfiguration withRoomCapacityTooSmallPenalty(int roomCapacityTooSmallPenalty) {
        this.setRoomCapacityTooSmallPenalty(roomCapacityTooSmallPenalty);
        return this;
    }

    public ExaminationConstraintConfiguration withPeriodPenaltyExamCoincidencePenalty(int periodPenaltyExamCoincidencePenalty) {
        this.setPeriodPenaltyExamCoincidencePenalty(periodPenaltyExamCoincidencePenalty);
        return this;
    }

    public ExaminationConstraintConfiguration withPeriodPenaltyExclusionPenalty(int periodPenaltyExclusionPenalty) {
        this.setPeriodPenaltyExclusionPenalty(periodPenaltyExclusionPenalty);
        return this;
    }

    public ExaminationConstraintConfiguration withPeriodPenaltyAfterPenalty(int periodPenaltyAfterPenalty) {
        this.setPeriodPenaltyAfterPenalty(periodPenaltyAfterPenalty);
        return this;
    }

    public ExaminationConstraintConfiguration withRoomPenaltyExclusivePenalty(int roomPenaltyExclusivePenalty) {
        this.setRoomPenaltyExclusivePenalty(roomPenaltyExclusivePenalty);
        return this;
    }

    public ExaminationConstraintConfiguration withTwoInARowPenalty(int twoInARowPenalty) {
        this.setTwoInARowPenalty(twoInARowPenalty);
        return this;
    }

    public ExaminationConstraintConfiguration withTwoInADayPenalty(int twoInADayPenalty) {
        this.setTwoInADayPenalty(twoInADayPenalty);
        return this;
    }

    public ExaminationConstraintConfiguration withPeriodSpreadLength(int periodSpreadLength) {
        this.setPeriodSpreadLength(periodSpreadLength);
        return this;
    }

    public ExaminationConstraintConfiguration withPeriodSpreadPenalty(int periodSpreadPenalty) {
        this.setPeriodSpreadPenalty(periodSpreadPenalty);
        return this;
    }

    public ExaminationConstraintConfiguration withMixedDurationPenalty(int mixedDurationPenalty) {
        this.setMixedDurationPenalty(mixedDurationPenalty);
        return this;
    }

    public ExaminationConstraintConfiguration withFrontLoadLargeTopicSize(int frontLoadLargeTopicSize) {
        this.setFrontLoadLargeTopicSize(frontLoadLargeTopicSize);
        return this;
    }

    public ExaminationConstraintConfiguration withFrontLoadLastPeriodSize(int frontLoadLastPeriodSize) {
        this.setFrontLoadLastPeriodSize(frontLoadLastPeriodSize);
        return this;
    }

    public ExaminationConstraintConfiguration withFrontLoadPenalty(int frontLoadPenalty) {
        this.setFrontLoadPenalty(frontLoadPenalty);
        return this;
    }

    public ExaminationConstraintConfiguration withPeriodPenaltyPenalty(int periodPenaltyPenalty) {
        this.setPeriodPenaltyPenalty(periodPenaltyPenalty);
        return this;
    }

    public ExaminationConstraintConfiguration withRoomPenaltyPenalty(int roomPenaltyPenalty) {
        this.setRoomPenaltyPenalty(roomPenaltyPenalty);
        return this;
    }
}