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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.machinereassignment.domain;

import java.util.Objects;

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

import com.fasterxml.jackson.annotation.JsonIgnore;

@PlanningEntity(difficultyComparatorClass = MrProcessAssignmentDifficultyComparator.class)
public class MrProcessAssignment extends AbstractPersistable {

    public static MrProcessAssignment withOriginalMachine(long id, MrProcess process, MrMachine originalMachine) {
        return new MrProcessAssignment(id, process, originalMachine, null);
    }

    public static MrProcessAssignment withTargetMachine(long id, MrProcess process, MrMachine targetMachine) {
        return new MrProcessAssignment(id, process, null, targetMachine);
    }

    private MrProcess process;
    private MrMachine originalMachine;
    private MrMachine machine;

    @SuppressWarnings("unused")
    MrProcessAssignment() {
    }

    public MrProcessAssignment(long id, MrProcess process) {
        super(id);
        this.process = process;
    }

    public MrProcessAssignment(long id, MrProcess process, MrMachine originalMachine, MrMachine machine) {
        super(id);
        this.process = process;
        this.originalMachine = originalMachine;
        this.machine = machine;
    }

    public MrProcess getProcess() {
        return process;
    }

    public MrMachine getOriginalMachine() {
        return originalMachine;
    }

    public void setOriginalMachine(MrMachine originalMachine) {
        this.originalMachine = originalMachine;
    }

    @PlanningVariable
    public MrMachine getMachine() {
        return machine;
    }

    public void setMachine(MrMachine machine) {
        this.machine = machine;
    }

    // ************************************************************************
    // Complex methods
    // ************************************************************************

    @JsonIgnore
    public MrService getService() {
        return process.getService();
    }

    @JsonIgnore
    public boolean isMoved() {
        if (machine == null) {
            return false;
        }
        return !Objects.equals(originalMachine, machine);
    }

    @JsonIgnore
    public int getProcessMoveCost() {
        return process.getMoveCost();
    }

    @JsonIgnore
    public int getMachineMoveCost() {
        return (machine == null || originalMachine == null) ? 0 : originalMachine.getMoveCostTo(machine);
    }

    @JsonIgnore
    public MrNeighborhood getNeighborhood() {
        return machine == null ? null : machine.getNeighborhood();
    }

    @JsonIgnore
    public MrLocation getLocation() {
        return machine == null ? null : machine.getLocation();
    }

    @JsonIgnore
    public long getUsage(MrResource resource) {
        return process.getUsage(resource);
    }

    @JsonIgnore
    public String getLabel() {
        return "Process " + getId();
    }

    @Override
    public String toString() {
        return process.toString();
    }

}