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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.pas.persistence;

import static java.util.Comparator.comparing;
import static java.util.Comparator.comparingLong;

import java.io.IOException;
import java.util.Comparator;

import org.optaplanner.examples.common.persistence.AbstractTxtSolutionExporter;
import org.optaplanner.examples.common.persistence.SolutionConverter;
import org.optaplanner.examples.pas.app.PatientAdmissionScheduleApp;
import org.optaplanner.examples.pas.domain.AdmissionPart;
import org.optaplanner.examples.pas.domain.Bed;
import org.optaplanner.examples.pas.domain.BedDesignation;
import org.optaplanner.examples.pas.domain.Patient;
import org.optaplanner.examples.pas.domain.PatientAdmissionSchedule;

public class PatientAdmissionScheduleExporter extends AbstractTxtSolutionExporter {

    public static void main(String[] args) {
        SolutionConverter converter = SolutionConverter.createExportConverter(
                PatientAdmissionScheduleApp.DATA_DIR_NAME, new PatientAdmissionScheduleExporter(),
                new PatientAdmissionScheduleSolutionFileIO());
        converter.convertAll();
    }

    @Override
    public TxtOutputBuilder createTxtOutputBuilder() {
        return new PatientAdmissionScheduleOutputBuilder();
    }

    public static class PatientAdmissionScheduleOutputBuilder extends TxtOutputBuilder {

        private static final Comparator COMPARATOR = comparing(BedDesignation::getAdmissionPart,
                comparingLong(AdmissionPart::getId))
                .thenComparing(BedDesignation::getBed, comparingLong(Bed::getId))
                .thenComparingLong(BedDesignation::getId);

        @Override
        public void writeSolution() throws IOException {
            solution.getBedDesignationList().sort(COMPARATOR);
            for (Patient patient : solution.getPatientList()) {
                bufferedWriter.write(Long.toString(patient.getId()));
                for (BedDesignation bedDesignation : solution.getBedDesignationList()) {
                    if (bedDesignation.getPatient().equals(patient)) {
                        for (int i = 0; i < bedDesignation.getAdmissionPart().getNightCount(); i++) {
                            bufferedWriter.write(" " + bedDesignation.getBed().getId());
                        }
                    }
                }
                bufferedWriter.write("\n");
            }
        }
    }

}