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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.flightcrewscheduling.domain;

import java.util.Comparator;

import org.optaplanner.core.api.domain.entity.PlanningEntity;
import org.optaplanner.core.api.domain.variable.PlanningVariable;
import org.optaplanner.examples.common.domain.AbstractPersistable;

@PlanningEntity
public class FlightAssignment extends AbstractPersistable implements Comparable {

    // Needs to be kept consistent with equals on account of Employee's flightAssignmentSet, which is a SortedSet.
    private static final Comparator COMPARATOR = Comparator.comparing(FlightAssignment::getFlight)
            .thenComparing(FlightAssignment::getIndexInFlight);

    private Flight flight;
    private int indexInFlight;
    private Skill requiredSkill;

    @PlanningVariable
    private Employee employee;

    public FlightAssignment() {
    }

    public FlightAssignment(long id, Flight flight, int indexInFlight, Skill requiredSkill) {
        super(id);
        this.flight = flight;
        this.indexInFlight = indexInFlight;
        this.requiredSkill = requiredSkill;
    }

    public long getFlightDurationInMinutes() {
        return flight.getDurationInMinutes();
    }

    @Override
    public String toString() {
        return flight + "-" + indexInFlight;
    }

    // ************************************************************************
    // Simple getters and setters
    // ************************************************************************

    public Flight getFlight() {
        return flight;
    }

    public void setFlight(Flight flight) {
        this.flight = flight;
    }

    public int getIndexInFlight() {
        return indexInFlight;
    }

    public void setIndexInFlight(int indexInFlight) {
        this.indexInFlight = indexInFlight;
    }

    public Skill getRequiredSkill() {
        return requiredSkill;
    }

    public void setRequiredSkill(Skill requiredSkill) {
        this.requiredSkill = requiredSkill;
    }

    public Employee getEmployee() {
        return employee;
    }

    public void setEmployee(Employee employee) {
        this.employee = employee;
    }

    @Override
    public int compareTo(FlightAssignment o) {
        return COMPARATOR.compare(this, o);
    }
}