com.graphhopper.api.vrp.example.TSP_BiggestCitiesInGermanyByBikeExample Maven / Gradle / Ivy

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The Java client for the GraphHopper Route Optimization API
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package com.graphhopper.api.vrp.example;


import com.graphhopper.api.vrp.client.api.SolutionApi;
import com.graphhopper.api.vrp.client.api.VrpApi;
import com.graphhopper.api.vrp.client.model.*;

import java.util.ArrayList;
import java.util.List;

/**
 * Let us now assume that you want to make this round trip a bit more exciting and challenging,
 * thus you decide to switch from boring car to bike (you will definitely be a hero if you manage
 * the round trip by bike). Here, you cannot use the default vehicle type anymore, but you need
 * to define your bike yourself. This requires two changes, first define a vehicle type in vehicle_types
 * and second make a reference to the specified type in your vehicle with type_id.
 */
public class TSP_BiggestCitiesInGermanyByBikeExample {

    public static void main(String[] args) throws Exception {
        new TSP_BiggestCitiesInGermanyByBikeExample().start();
    }

    private void start() throws Exception {

        Request request = createRequest();
        VrpApi vrpApi = new VrpApi();

        // enable debugging for sending and receiving requests
        // ApiClient client = new ApiClient().setDebugging(true);
        // api.setApiClient(client);        
        
        String key = "[YOUR-KEY]";
        JobId jobId = vrpApi.postVrp(key, request);

        System.out.println(jobId.getJobId());

        SolutionApi solApi = new SolutionApi();
        Response rsp;

        while (true) {
            rsp = solApi.getSolution(key, jobId.getJobId());
            if (rsp.getStatus().equals(Response.StatusEnum.FINISHED)) {
                break;
            }
            Thread.sleep(200);
        }
        System.out.println(rsp);

    }

    private Request createRequest() {
        Request request = new Request();
        request.setAlgorithm(new Algorithm());
        /*
        specify vehicles
         */
        List vehicles = new ArrayList();

        Vehicle v = new Vehicle();
        v.setVehicleId("v1");
        v.setStartAddress(createAddress("berlin", 52.537, 13.406));
        v.setTypeId("my-awesome-bike");
        vehicles.add(v);
        request.setVehicles(vehicles);

        /*
        specify vehicle type
         */
        List types = new ArrayList();
        VehicleType type = new VehicleType();
        type.setProfile(VehicleType.ProfileEnum.BIKE);
        type.setTypeId("my-awesome-bike");
        types.add(type);
        request.setVehicleTypes(types);

        /*
        specify your services
         */
        List services = new ArrayList();

        services.add(createService("hamburg", 53.552, 9.999));
        services.add(createService("munich", 48.145, 11.570));
        services.add(createService("cologne", 50.936, 6.957));
        services.add(createService("frankfurt", 50.109, 8.670));

        request.setServices(services);

        return request;
    }

    public Address createAddress(String locationId, double lat, double lon) {
        Address a = new Address();
        a.setLat(lat);
        a.setLon(lon);
        a.setLocationId(locationId);
        return a;
    }

    public Service createService(String id, double lat, double lon) {
        Service service = new Service();
        service.setId(id);
        service.setType(Service.TypeEnum.SERVICE);
        service.setAddress(createAddress(id, lat, lon));
        return service;
    }

}