App.java

package map.builder;

import java.io.IOException;
import java.util.ArrayList;

import org.json.JSONArray;

import de.fuberlin.navigator.protos.map_builder.RoadNetwork;
import map.builder.osm.OSMConnectedComponentParser;
import map.builder.osm.OSMFetcher;
import map.builder.osm.OSMParser;
import map.builder.utilities.BoundingBox;
import map.builder.utilities.ConnectedComponentGraph;
import map.builder.utilities.FileHandler;

public class App {
    public static void main(String[] args) throws IOException {
        RoadNetwork.Builder roadNetworkBuilder = RoadNetwork.newBuilder();
        OSMParser parser = new OSMParser(roadNetworkBuilder);

        // A small BBox inside Cottbus
        /*
         * float minLat = 51.765120241998865f;
         * float minLon = 14.32669617537409f;
         * float maxLat = 51.77116774623326f;
         * float maxLon = 14.330334220133722f;
         */

        // smaller BBox inside Cottbus, better for the debug tool
        float minLat = 51.754092326645475f;
        float minLon = 14.300615062713623f;
        float maxLat = 51.766591637718435f;
        float maxLon = 14.314413070678711f;

        // BBox around Cottbus
        /*
         * float minLat = 51.714692361306376f;
         * float minLon = 14.26197052001953f;
         * float maxLat = 51.79290380494767f;
         * float maxLon = 14.415779113769531f;
         */

        BoundingBox bbox = new BoundingBox(minLat, minLon, maxLat, maxLon);

        JSONArray restrictions = OSMFetcher.fetchTurnRestrictions(bbox);
        JSONArray roads = OSMFetcher.fetchNodesAndWays(bbox);
        OSMFetcher.dumpJsonData(roads, "test_data.json");

        parser.parseTurnRestrictions(restrictions);
        parser.parseRoads(roads);

        // set it to 0 so that it can be collected by garbage collector
        restrictions = null;
        roads = null;
        bbox = null;
        parser = null;

        // create the nodes graph in order to run LCC on it
        ConnectedComponentGraph graph = new ConnectedComponentGraph();
        OSMConnectedComponentParser.addNodes(roadNetworkBuilder, graph);
        OSMConnectedComponentParser.addEdges(roadNetworkBuilder, graph);

        ArrayList<Long> component = graph.getSCCs();
        System.out.println(component.toString());

        // cleanup
        graph = null;
        OSMConnectedComponentParser.cleanUp(roadNetworkBuilder, component);

        RoadNetwork roadNetwork = roadNetworkBuilder.build();
        System.out.println("Turn restrictions count: " + roadNetwork.getTurnRestrictionsCount());
        System.out.println("Nodes count: " + roadNetwork.getNodesCount());
        System.out.println("Segments count: " + roadNetwork.getSegmentsCount());
        FileHandler.saveToFile(roadNetwork, "./roadnetwork_sample.proto");
    }
}