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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.
/*
* Copyright 2010 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.optaplanner.examples.dinnerparty.persistence;
import java.io.IOException;
import java.math.BigInteger;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.optaplanner.examples.common.persistence.AbstractTxtSolutionImporter;
import org.optaplanner.examples.common.persistence.SolutionConverter;
import org.optaplanner.examples.dinnerparty.app.DinnerPartyApp;
import org.optaplanner.examples.dinnerparty.domain.DinnerParty;
import org.optaplanner.examples.dinnerparty.domain.Gender;
import org.optaplanner.examples.dinnerparty.domain.Guest;
import org.optaplanner.examples.dinnerparty.domain.Hobby;
import org.optaplanner.examples.dinnerparty.domain.HobbyPractician;
import org.optaplanner.examples.dinnerparty.domain.Job;
import org.optaplanner.examples.dinnerparty.domain.JobType;
import org.optaplanner.examples.dinnerparty.domain.Seat;
import org.optaplanner.examples.dinnerparty.domain.SeatDesignation;
import org.optaplanner.examples.dinnerparty.domain.Table;
public class DinnerPartyImporter extends AbstractTxtSolutionImporter {
public static void main(String[] args) {
SolutionConverter converter = SolutionConverter.createImportConverter(
DinnerPartyApp.DATA_DIR_NAME, new DinnerPartyImporter(), DinnerParty.class);
converter.convertAll();
}
@Override
public TxtInputBuilder createTxtInputBuilder() {
return new DinnerPartyInputBuilder();
}
public static class DinnerPartyInputBuilder extends TxtInputBuilder {
@Override
public DinnerParty readSolution() throws IOException {
DinnerParty dinnerParty = new DinnerParty();
dinnerParty.setId(0L);
readTableListAndSeatList(dinnerParty);
readJobListGuestListAndHobbyPracticianList(dinnerParty);
createSeatDesignationList(dinnerParty);
BigInteger possibleSolutionSize = BigInteger.valueOf(dinnerParty.getGuestList().size()).pow(
dinnerParty.getSeatDesignationList().size());
logger.info("DinnerParty {} has {} jobs, {} guests, {} hobby practicians, {} tables and {} seats"
+ " with a search space of {}.",
getInputId(),
dinnerParty.getJobList().size(),
dinnerParty.getGuestList().size(),
dinnerParty.getHobbyPracticianList().size(),
dinnerParty.getTableList().size(),
dinnerParty.getSeatList().size(),
getFlooredPossibleSolutionSize(possibleSolutionSize));
return dinnerParty;
}
private void readTableListAndSeatList(DinnerParty dinnerParty)
throws IOException {
int tableListSize = readIntegerValue("Tables:");
int seatsPerTable = readIntegerValue("SeatsPerTable:");
List tableList = new ArrayList<>(tableListSize);
List seatList = new ArrayList<>(tableListSize * seatsPerTable);
for (int i = 0; i < tableListSize; i++) {
Table table = new Table();
table.setId((long) i);
table.setTableIndex(i);
List tableSeatList = new ArrayList<>(seatsPerTable);
Seat firstSeat = null;
Seat previousSeat = null;
for (int j = 0; j < seatsPerTable; j++) {
Seat seat = new Seat();
seat.setId((long) ((i * seatsPerTable) + j));
seat.setTable(table);
seat.setSeatIndexInTable(j);
if (previousSeat != null) {
seat.setLeftSeat(previousSeat);
previousSeat.setRightSeat(seat);
} else {
firstSeat = seat;
}
tableSeatList.add(seat);
seatList.add(seat);
previousSeat = seat;
}
firstSeat.setLeftSeat(previousSeat);
previousSeat.setRightSeat(firstSeat);
table.setSeatList(tableSeatList);
tableList.add(table);
}
dinnerParty.setTableList(tableList);
dinnerParty.setSeatList(seatList);
}
private void readJobListGuestListAndHobbyPracticianList(DinnerParty dinnerParty)
throws IOException {
readConstantLine("Code,Name,JobType,Job,Gender,Hobby1,Hobby2,Hobby3");
readConstantLine("\\-+");
int guestSize = dinnerParty.getSeatList().size();
List guestList = new ArrayList<>(guestSize);
List hobbyPracticianList = new ArrayList<>(guestSize * 3);
Map jobMap = new HashMap<>(JobType.values().length * 5);
int jobNextId = 0;
int hobbyPracticianJobId = 0;
for (int i = 0; i < guestSize; i++) {
Guest guest = new Guest();
guest.setId((long) i);
String[] lineTokens = splitByCommaAndTrim(bufferedReader.readLine(), 6, null);
guest.setCode(lineTokens[0]);
guest.setName(lineTokens[1]);
JobType jobType = JobType.valueOfCode(lineTokens[2]);
String jobName = lineTokens[3];
String jobMapKey = jobType + "/" + jobName;
Job job = jobMap.get(jobMapKey);
if (job == null) {
job = new Job();
job.setId((long) jobNextId);
jobNextId++;
job.setJobType(jobType);
job.setName(jobName);
jobMap.put(jobMapKey, job);
}
guest.setJob(job);
guest.setGender(Gender.valueOfCode(lineTokens[4]));
List hobbyPracticianOfGuestList = new ArrayList<>(lineTokens.length - 5);
for (int j = 5; j < lineTokens.length; j++) {
HobbyPractician hobbyPractician = new HobbyPractician();
hobbyPractician.setId((long) hobbyPracticianJobId);
hobbyPracticianJobId++;
hobbyPractician.setGuest(guest);
hobbyPractician.setHobby(Hobby.valueOfCode(lineTokens[j]));
hobbyPracticianOfGuestList.add(hobbyPractician);
hobbyPracticianList.add(hobbyPractician);
}
guest.setHobbyPracticianList(hobbyPracticianOfGuestList);
guestList.add(guest);
}
dinnerParty.setJobList(new ArrayList<>(jobMap.values()));
dinnerParty.setGuestList(guestList);
dinnerParty.setHobbyPracticianList(hobbyPracticianList);
}
private void createSeatDesignationList(DinnerParty dinnerParty) {
List guestList = dinnerParty.getGuestList();
List seatDesignationList = new ArrayList<>(guestList.size());
long id = 0L;
for (Guest guest : guestList) {
SeatDesignation seatDesignation = new SeatDesignation();
seatDesignation.setId(id);
id++;
seatDesignation.setGuest(guest);
// Notice that we leave the PlanningVariable properties on null
seatDesignationList.add(seatDesignation);
}
dinnerParty.setSeatDesignationList(seatDesignationList);
}
}
}
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