C++ NBNetBuilder::getNodeCont方法代码示例

// ===========================================================================
// method definitions
// ===========================================================================
// ---------------------------------------------------------------------------
// static methods
// ---------------------------------------------------------------------------
void
NIImporter_MATSim::loadNetwork(const OptionsCont& oc, NBNetBuilder& nb) {
    // check whether the option is set (properly)
    if (!oc.isSet("matsim-files")) {
        return;
    }
    /* Parse file(s)
     * Each file is parsed twice: first for nodes, second for edges. */
    std::vector<std::string> files = oc.getStringVector("matsim-files");
    // load nodes, first
    NodesHandler nodesHandler(nb.getNodeCont());
    for (std::vector<std::string>::const_iterator file = files.begin(); file != files.end(); ++file) {
        // nodes
        if (!FileHelpers::isReadable(*file)) {
            WRITE_ERROR("Could not open matsim-file '" + *file + "'.");
            return;
        }
        nodesHandler.setFileName(*file);
        PROGRESS_BEGIN_MESSAGE("Parsing nodes from matsim-file '" + *file + "'");
        if (!XMLSubSys::runParser(nodesHandler, *file)) {
            return;
        }
        PROGRESS_DONE_MESSAGE();
    }
    // load edges, then
    EdgesHandler edgesHandler(nb.getNodeCont(), nb.getEdgeCont(), oc.getBool("matsim.keep-length"),
                              oc.getBool("matsim.lanes-from-capacity"), NBCapacity2Lanes(oc.getFloat("lanes-from-capacity.norm")));
    for (std::vector<std::string>::const_iterator file = files.begin(); file != files.end(); ++file) {
        // edges
        edgesHandler.setFileName(*file);
        PROGRESS_BEGIN_MESSAGE("Parsing edges from matsim-file '" + *file + "'");
        XMLSubSys::runParser(edgesHandler, *file);
        PROGRESS_DONE_MESSAGE();
    }
}

// ===========================================================================
// method definitions
// ===========================================================================
// ---------------------------------------------------------------------------
// NBRampsComputer
// ---------------------------------------------------------------------------
void
NBRampsComputer::computeRamps(NBNetBuilder& nb, OptionsCont& oc) {
    SUMOReal minHighwaySpeed = oc.getFloat("ramps.min-highway-speed");
    SUMOReal maxRampSpeed = oc.getFloat("ramps.max-ramp-speed");
    SUMOReal rampLength = oc.getFloat("ramps.ramp-length");
    bool dontSplit = oc.getBool("ramps.no-split");
    std::set<NBEdge*> incremented;
    // check whether on-off ramps shall be guessed
    if (oc.getBool("ramps.guess")) {
        NBNodeCont& nc = nb.getNodeCont();
        NBEdgeCont& ec = nb.getEdgeCont();
        NBDistrictCont& dc = nb.getDistrictCont();
        std::set<NBNode*> potOnRamps;
        std::set<NBNode*> potOffRamps;
        for (std::map<std::string, NBNode*>::const_iterator i = nc.begin(); i != nc.end(); ++i) {
            NBNode* cur = (*i).second;
            if (mayNeedOnRamp(cur, minHighwaySpeed, maxRampSpeed)) {
                potOnRamps.insert(cur);
            }
            if (mayNeedOffRamp(cur, minHighwaySpeed, maxRampSpeed)) {
                potOffRamps.insert(cur);
            }
        }
        for (std::set<NBNode*>::const_iterator i = potOnRamps.begin(); i != potOnRamps.end(); ++i) {
            buildOnRamp(*i, nc, ec, dc, rampLength, dontSplit, incremented);
        }
        for (std::set<NBNode*>::const_iterator i = potOffRamps.begin(); i != potOffRamps.end(); ++i) {
            buildOffRamp(*i, nc, ec, dc, rampLength, dontSplit, incremented);
        }
    }
    // check whether on-off ramps shall be guessed
    if (oc.isSet("ramps.set")) {
        std::vector<std::string> edges = oc.getStringVector("ramps.set");
        NBNodeCont& nc = nb.getNodeCont();
        NBEdgeCont& ec = nb.getEdgeCont();
        NBDistrictCont& dc = nb.getDistrictCont();
        for (std::vector<std::string>::iterator i = edges.begin(); i != edges.end(); ++i) {
            NBEdge* e = ec.retrieve(*i);
            if (e == 0) {
                WRITE_WARNING("Can not build on ramp on edge '" + *i + "' - the edge is not known.");
                continue;
            }
            NBNode* from = e->getFromNode();
            if (from->getIncomingEdges().size() == 2 && from->getOutgoingEdges().size() == 1) {
                buildOnRamp(from, nc, ec, dc, rampLength, dontSplit, incremented);
            }
            // load edge again to check offramps
            e = ec.retrieve(*i);
            if (e == 0) {
                WRITE_WARNING("Can not build off ramp on edge '" + *i + "' - the edge is not known.");
                continue;
            }
            NBNode* to = e->getToNode();
            if (to->getIncomingEdges().size() == 1 && to->getOutgoingEdges().size() == 2) {
                buildOffRamp(to, nc, ec, dc, rampLength, dontSplit, incremented);
            }
        }
    }
}

// ---------------------------------------------------------------------------
// static methods
// ---------------------------------------------------------------------------
void
NWWriter_DlrNavteq::writeNetwork(const OptionsCont& oc, NBNetBuilder& nb) {
    // check whether a matsim-file shall be generated
    if (!oc.isSet("dlr-navteq-output")) {
        return;
    }
    writeNodesUnsplitted(oc, nb.getNodeCont(), nb.getEdgeCont());
    writeLinksUnsplitted(oc, nb.getEdgeCont());
    writeTrafficSignals(oc, nb.getNodeCont());
}

// ---------------------------------------------------------------------------
// static methods
// ---------------------------------------------------------------------------
void
NWWriter_DlrNavteq::writeNetwork(const OptionsCont& oc, NBNetBuilder& nb) {
    // check whether a matsim-file shall be generated
    if (!oc.isSet("dlr-navteq-output")) {
        return;
    }
    std::map<NBEdge*, std::string> internalNodes;
    writeNodesUnsplitted(oc, nb.getNodeCont(), nb.getEdgeCont(), internalNodes);
    writeLinksUnsplitted(oc, nb.getEdgeCont(), internalNodes);
    writeTrafficSignals(oc, nb.getNodeCont());
    writeProhibitedManoeuvres(oc, nb.getNodeCont(), nb.getEdgeCont());
    writeConnectedLanes(oc, nb.getNodeCont());
}

// ===========================================================================
// method definitions
// ===========================================================================
// ---------------------------------------------------------------------------
// static methods
// ---------------------------------------------------------------------------
void
NWWriter_XML::writeNetwork(const OptionsCont& oc, NBNetBuilder& nb) {
    // check whether plain-output files shall be generated
    if (oc.isSet("plain-output-prefix")) {
        writeNodes(oc, nb.getNodeCont());
        writeEdgesAndConnections(oc, nb.getNodeCont(), nb.getEdgeCont());
        writeTrafficLights(oc, nb.getTLLogicCont(), nb.getEdgeCont());
    }
    if (oc.isSet("junctions.join-output")) {
        writeJoinedJunctions(oc, nb.getNodeCont());
    }
    if (oc.isSet("street-sign-output")) {
        writeStreetSigns(oc, nb.getEdgeCont());
    }
}

// ===========================================================================
// method definitions
// ===========================================================================
// ---------------------------------------------------------------------------
// static methods (interface in this case)
// ---------------------------------------------------------------------------
void
NIImporter_RobocupRescue::loadNetwork(const OptionsCont& oc, NBNetBuilder& nb) {
    // check whether the option is set (properly)
    if (!oc.isSet("robocup-dir")) {
        return;
    }
    // build the handler
    NIImporter_RobocupRescue handler(nb.getNodeCont(), nb.getEdgeCont());
    // parse file(s)
    std::vector<std::string> files = oc.getStringVector("robocup-dir");
    for (std::vector<std::string>::const_iterator file = files.begin(); file != files.end(); ++file) {
        // nodes
        std::string nodesName = (*file) + "/node.bin";
        if (!FileHelpers::exists(nodesName)) {
            WRITE_ERROR("Could not open robocup-node-file '" + nodesName + "'.");
            return;
        }
        PROGRESS_BEGIN_MESSAGE("Parsing robocup-nodes from '" + nodesName + "'");
        handler.loadNodes(nodesName);
        PROGRESS_DONE_MESSAGE();
        // edges
        std::string edgesName = (*file) + "/road.bin";
        if (!FileHelpers::exists(edgesName)) {
            WRITE_ERROR("Could not open robocup-road-file '" + edgesName + "'.");
            return;
        }
        PROGRESS_BEGIN_MESSAGE("Parsing robocup-roads from '" + edgesName + "'");
        handler.loadEdges(edgesName);
        PROGRESS_DONE_MESSAGE();
    }
}

// ===========================================================================
// method definitions
// ===========================================================================
// ---------------------------------------------------------------------------
// static methods (interface in this case)
// ---------------------------------------------------------------------------
void
NIImporter_ArcView::loadNetwork(const OptionsCont& oc, NBNetBuilder& nb) {
    if (!oc.isSet("shapefile-prefix")) {
        return;
    }
    // check whether the correct set of entries is given
    //  and compute both file names
    std::string dbf_file = oc.getString("shapefile-prefix") + ".dbf";
    std::string shp_file = oc.getString("shapefile-prefix") + ".shp";
    std::string shx_file = oc.getString("shapefile-prefix") + ".shx";
    // check whether the files do exist
    if (!FileHelpers::isReadable(dbf_file)) {
        WRITE_ERROR("File not accessible: " + dbf_file);
    }
    if (!FileHelpers::isReadable(shp_file)) {
        WRITE_ERROR("File not accessible: " + shp_file);
    }
    if (!FileHelpers::isReadable(shx_file)) {
        WRITE_ERROR("File not accessible: " + shx_file);
    }
    if (MsgHandler::getErrorInstance()->wasInformed()) {
        return;
    }
    // load the arcview files
    NIImporter_ArcView loader(oc,
                              nb.getNodeCont(), nb.getEdgeCont(), nb.getTypeCont(),
                              dbf_file, shp_file, oc.getBool("speed-in-kmh"));
    loader.load();
}

// ---------------------------------------------------------------------------
// loader methods
// ---------------------------------------------------------------------------
NIImporter_SUMO::NIImporter_SUMO(NBNetBuilder& nb)
    : SUMOSAXHandler("sumo-network"),
      myNetBuilder(nb),
      myNodeCont(nb.getNodeCont()),
      myTLLCont(nb.getTLLogicCont()),
      myCurrentEdge(0),
      myCurrentLane(0),
      myCurrentTL(0),
      myLocation(0),
      mySuspectKeepShape(false) {}

int
main(int argc, char** argv) {
    OptionsCont& oc = OptionsCont::getOptions();
    // give some application descriptions
    oc.setApplicationDescription("Road network generator for the microscopic road traffic simulation SUMO.");
    oc.setApplicationName("netgen", "SUMO netgen Version " + (std::string)VERSION_STRING);
    int ret = 0;
    try {
        // initialise the application system (messaging, xml, options)
        XMLSubSys::init(false);
        fillOptions();
        OptionsIO::getOptions(true, argc, argv);
        if (oc.processMetaOptions(argc < 2)) {
            SystemFrame::close();
            return 0;
        }
        MsgHandler::initOutputOptions();
        if (!checkOptions()) {
            throw ProcessError();
        }
        RandHelper::initRandGlobal();
        NBNetBuilder nb;
        nb.applyOptions(oc);
        // build the netgen-network description
        NGNet* net = buildNetwork(nb);
        // ... and we have to do this...
        oc.resetWritable();
        // transfer to the netbuilding structures
        net->toNB();
        delete net;
        // report generated structures
        WRITE_MESSAGE(" Generation done;");
        WRITE_MESSAGE("   " + toString<int>(nb.getNodeCont().size()) + " nodes generated.");
        WRITE_MESSAGE("   " + toString<int>(nb.getEdgeCont().size()) + " edges generated.");
        nb.compute(oc);
        NWFrame::writeNetwork(oc, nb);
    } catch (ProcessError& e) {
        if (std::string(e.what()) != std::string("Process Error") && std::string(e.what()) != std::string("")) {
            WRITE_ERROR(e.what());
        }
        MsgHandler::getErrorInstance()->inform("Quitting (on error).", false);
        ret = 1;
#ifndef _DEBUG
    } catch (...) {
        MsgHandler::getErrorInstance()->inform("Quitting (on unknown error).", false);
        ret = 1;
#endif
    }
    OutputDevice::closeAll();
    SystemFrame::close();
    if (ret == 0) {
        std::cout << "Success." << std::endl;
    }
    return ret;
}

// ---------------------------------------------------------------------------
// loader methods
// ---------------------------------------------------------------------------
NIImporter_SUMO::NIImporter_SUMO(NBNetBuilder& nb)
    : SUMOSAXHandler("sumo-network"),
      myNetBuilder(nb),
      myNodeCont(nb.getNodeCont()),
      myTLLCont(nb.getTLLogicCont()),
      myCurrentEdge(0),
      myCurrentLane(0),
      myCurrentTL(0),
      myLocation(0),
      mySuspectKeepShape(false),
      myHaveWarnedAboutDeprecatedSpreadType(false),
      myHaveWarnedAboutDeprecatedMaxSpeed(false) {}

// ---------------------------------------------------------------------------
// loader methods
// ---------------------------------------------------------------------------
NIImporter_SUMO::NIImporter_SUMO(NBNetBuilder& nb)
    : SUMOSAXHandler("sumo-network"),
      myNetBuilder(nb),
      myNodeCont(nb.getNodeCont()),
      myTLLCont(nb.getTLLogicCont()),
      myCurrentEdge(0),
      myCurrentLane(0),
      myCurrentTL(0),
      myLocation(0),
      myHaveSeenInternalEdge(false),
      myAmLefthand(false),
      myCornerDetail(0),
      myLinkDetail(-1) {
}

// ===========================================================================
// method definitions
// ===========================================================================
// ---------------------------------------------------------------------------
// static methods
// ---------------------------------------------------------------------------
void
NWWriter_MATSim::writeNetwork(const OptionsCont& oc, NBNetBuilder& nb) {
    // check whether a matsim-file shall be generated
    if (!oc.isSet("matsim-output")) {
        return;
    }
    OutputDevice& device = OutputDevice::getDevice(oc.getString("matsim-output"));
    device << "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n";
    device << "<!DOCTYPE network SYSTEM \"http://www.matsim.org/files/dtd/network_v1.dtd\">\n\n";
    device << "<network name=\"NAME\">\n"; // !!! name
    // write nodes
    device << "   <nodes>\n";
    NBNodeCont& nc = nb.getNodeCont();
    for (std::map<std::string, NBNode*>::const_iterator i = nc.begin(); i != nc.end(); ++i) {
        device << "      <node id=\"" << (*i).first
               << "\" x=\"" << (*i).second->getPosition().x()
               << "\" y=\"" << (*i).second->getPosition().y()
               << "\"/>\n";
    }
    device << "   </nodes>\n";
    // write edges
    device << "   <links capperiod=\"01:00:00\">\n";
    NBEdgeCont& ec = nb.getEdgeCont();
    for (std::map<std::string, NBEdge*>::const_iterator i = ec.begin(); i != ec.end(); ++i) {
        device << "      <link id=\"" << (*i).first
               << "\" from=\"" << (*i).second->getFromNode()->getID()
               << "\" to=\"" << (*i).second->getToNode()->getID()
               << "\" length=\"" << (*i).second->getLoadedLength()
               << "\" capacity=\"" << (oc.getFloat("lanes-from-capacity.norm") * (*i).second->getNumLanes())
               << "\" freespeed=\"" << (*i).second->getSpeed()
               << "\" permlanes=\"" << (*i).second->getNumLanes()
               << "\"/>\n";
    }
    device << "   </links>\n";
    //
    device << "</network>\n"; // !!! name
    device.close();
}

// ===========================================================================
// method definitions
// ===========================================================================
// ---------------------------------------------------------------------------
// static methods
// ---------------------------------------------------------------------------
void
NWWriter_OpenDrive::writeNetwork(const OptionsCont& oc, NBNetBuilder& nb) {
    // check whether an opendrive-file shall be generated
    if (!oc.isSet("opendrive-output")) {
        return;
    }
    const NBNodeCont& nc = nb.getNodeCont();
    const NBEdgeCont& ec = nb.getEdgeCont();
    const bool origNames = oc.getBool("output.original-names");
    const bool lefthand = oc.getBool("lefthand");
    const double straightThresh = DEG2RAD(oc.getFloat("opendrive-output.straight-threshold"));
    // some internal mapping containers
    int nodeID = 1;
    int edgeID = nc.size() * 10; // distinct from node ids
    StringBijection<int> edgeMap;
    StringBijection<int> nodeMap;
    //
    OutputDevice& device = OutputDevice::getDevice(oc.getString("opendrive-output"));
    device << "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n";
    device.openTag("OpenDRIVE");
    time_t now = time(0);
    std::string dstr(ctime(&now));
    const Boundary& b = GeoConvHelper::getFinal().getConvBoundary();
    // write header
    device.openTag("header");
    device.writeAttr("revMajor", "1");
    device.writeAttr("revMinor", "4");
    device.writeAttr("name", "");
    device.writeAttr("version", "1.00");
    device.writeAttr("date", dstr.substr(0, dstr.length() - 1));
    device.writeAttr("north", b.ymax());
    device.writeAttr("south", b.ymin());
    device.writeAttr("east", b.xmax());
    device.writeAttr("west", b.xmin());
    /* @note obsolete in 1.4
    device.writeAttr("maxRoad", ec.size());
    device.writeAttr("maxJunc", nc.size());
    device.writeAttr("maxPrg", 0);
    */
    device.closeTag();
    // write optional geo reference
    const GeoConvHelper& gch = GeoConvHelper::getFinal();
    if (gch.usingGeoProjection()) {
        if (gch.getOffsetBase() == Position(0,0)) {
            device.openTag("geoReference");
            device.writePreformattedTag(" <![CDATA[\n " 
                    + gch.getProjString() 
                    + "\n]]>\n");
            device.closeTag();
        } else {
            WRITE_WARNING("Could not write OpenDRIVE geoReference. Only unshifted Coordinate systems are supported (offset=" + toString(gch.getOffsetBase()) + ")");
        }
    }

    // write normal edges (road)
    for (std::map<std::string, NBEdge*>::const_iterator i = ec.begin(); i != ec.end(); ++i) {
        const NBEdge* e = (*i).second;
        const int fromNodeID = e->getIncomingEdges().size() > 0 ? getID(e->getFromNode()->getID(), nodeMap, nodeID) : INVALID_ID;
        const int toNodeID = e->getConnections().size() > 0 ? getID(e->getToNode()->getID(), nodeMap, nodeID) : INVALID_ID;
        writeNormalEdge(device, e,
                        getID(e->getID(), edgeMap, edgeID),
                        fromNodeID, toNodeID,
                        origNames, straightThresh);
    }
    device.lf();

    // write junction-internal edges (road). In OpenDRIVE these are called 'paths' or 'connecting roads'
    OutputDevice_String junctionOSS(false, 3);
    for (std::map<std::string, NBNode*>::const_iterator i = nc.begin(); i != nc.end(); ++i) {
        NBNode* n = (*i).second;
        int connectionID = 0; // unique within a junction
        const int nID = getID(n->getID(), nodeMap, nodeID);
        if (n->numNormalConnections() > 0) {
            junctionOSS << "    <junction name=\"" << n->getID() << "\" id=\"" << nID << "\">\n";
        }
        std::vector<NBEdge*> incoming = (*i).second->getIncomingEdges();
        if (lefthand) {
            std::reverse(incoming.begin(), incoming.end());
        }
        for (NBEdge* inEdge : incoming) {
            std::string centerMark = "none";
            const int inEdgeID = getID(inEdge->getID(), edgeMap, edgeID);
            // group parallel edges
            const NBEdge* outEdge = 0;
            bool isOuterEdge = true; // determine where a solid outer border should be drawn
            int lastFromLane = -1;
            std::vector<NBEdge::Connection> parallel;
            std::vector<NBEdge::Connection> connections = inEdge->getConnections();
            if (lefthand) {
                std::reverse(connections.begin(), connections.end());
            }
            for (const NBEdge::Connection& c : connections) {
                assert(c.toEdge != 0);
                if (outEdge != c.toEdge || c.fromLane == lastFromLane) {
//.........这里部分代码省略.........

// ===========================================================================
// method definitions
// ===========================================================================
// ---------------------------------------------------------------------------
// static methods
// ---------------------------------------------------------------------------
void
NWWriter_SUMO::writeNetwork(const OptionsCont& oc, NBNetBuilder& nb) {
    // check whether a sumo net-file shall be generated
    if (!oc.isSet("output-file")) {
        return;
    }
    OutputDevice& device = OutputDevice::getDevice(oc.getString("output-file"));
    device.writeXMLHeader("net", NWFrame::MAJOR_VERSION + " xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xsi:noNamespaceSchemaLocation=\"http://sumo.sf.net/xsd/net_file.xsd\""); // street names may contain non-ascii chars
    device.lf();
    // get involved container
    const NBNodeCont& nc = nb.getNodeCont();
    const NBEdgeCont& ec = nb.getEdgeCont();
    const NBDistrictCont& dc = nb.getDistrictCont();

    // write network offsets and projection
    writeLocation(device);

    // write inner lanes
    bool origNames = oc.getBool("output.original-names");
    if (!oc.getBool("no-internal-links")) {
        bool hadAny = false;
        for (std::map<std::string, NBNode*>::const_iterator i = nc.begin(); i != nc.end(); ++i) {
            hadAny |= writeInternalEdges(device, *(*i).second, origNames);
        }
        if (hadAny) {
            device.lf();
        }
    }

    // write edges with lanes and connected edges
    bool noNames = !oc.getBool("output.street-names");
    for (std::map<std::string, NBEdge*>::const_iterator i = ec.begin(); i != ec.end(); ++i) {
        writeEdge(device, *(*i).second, noNames, origNames);
    }
    device.lf();

    // write tls logics
    writeTrafficLights(device, nb.getTLLogicCont());

    // write the nodes (junctions)
    for (std::map<std::string, NBNode*>::const_iterator i = nc.begin(); i != nc.end(); ++i) {
        writeJunction(device, *(*i).second);
    }
    device.lf();
    const bool includeInternal = !oc.getBool("no-internal-links");
    if (includeInternal) {
        // ... internal nodes if not unwanted
        bool hadAny = false;
        for (std::map<std::string, NBNode*>::const_iterator i = nc.begin(); i != nc.end(); ++i) {
            hadAny |= writeInternalNodes(device, *(*i).second);
        }
        if (hadAny) {
            device.lf();
        }
    }

    // write the successors of lanes
    unsigned int numConnections = 0;
    for (std::map<std::string, NBEdge*>::const_iterator it_edge = ec.begin(); it_edge != ec.end(); it_edge++) {
        NBEdge* from = it_edge->second;
        from->sortOutgoingConnectionsByIndex();
        const std::vector<NBEdge::Connection> connections = from->getConnections();
        numConnections += (unsigned int)connections.size();
        for (std::vector<NBEdge::Connection>::const_iterator it_c = connections.begin(); it_c != connections.end(); it_c++) {
            writeConnection(device, *from, *it_c, includeInternal);
        }
    }
    if (numConnections > 0) {
        device.lf();
    }
    if (includeInternal) {
        // ... internal successors if not unwanted
        bool hadAny = false;
        for (std::map<std::string, NBNode*>::const_iterator i = nc.begin(); i != nc.end(); ++i) {
            hadAny |= writeInternalConnections(device, *(*i).second);
        }
        if (hadAny) {
            device.lf();
        }
    }
    // write loaded prohibitions
    for (std::map<std::string, NBNode*>::const_iterator i = nc.begin(); i != nc.end(); ++i) {
        writeProhibitions(device, i->second->getProhibitions());
    }

    // write roundabout information
    const std::vector<EdgeVector>& roundabouts = nb.getRoundabouts();
    for (std::vector<EdgeVector>::const_iterator i = roundabouts.begin(); i != roundabouts.end(); ++i) {
        writeRoundabout(device, *i);
    }
    if (roundabouts.size() != 0) {
        device.lf();
    }

//.........这里部分代码省略.........

// ===========================================================================
// method definitions
// ===========================================================================
// ---------------------------------------------------------------------------
// static methods (interface in this case)
// ---------------------------------------------------------------------------
void
NIImporter_SUMO::loadNetwork(const OptionsCont &oc, NBNetBuilder &nb) {
    // check whether the option is set (properly)
    if (!oc.isUsableFileList("sumo-net")) {
        return;
    }
    // build the handler
    NIImporter_SUMO handler(nb.getNodeCont());
    // parse file(s)
    std::vector<std::string> files = oc.getStringVector("sumo-net");
    for (std::vector<std::string>::const_iterator file=files.begin(); file!=files.end(); ++file) {
        if (!FileHelpers::exists(*file)) {
            MsgHandler::getErrorInstance()->inform("Could not open sumo-net-file '" + *file + "'.");
            return;
        }
        handler.setFileName(*file);
        MsgHandler::getMessageInstance()->beginProcessMsg("Parsing sumo-net from '" + *file + "'...");
        XMLSubSys::runParser(handler, *file);
        MsgHandler::getMessageInstance()->endProcessMsg("done.");
    }
    // build edges
    std::map<std::string, EdgeAttrs*> &loadedEdges = handler.myEdges;
    NBNodeCont &nodesCont = nb.getNodeCont();
    NBEdgeCont &edgesCont = nb.getEdgeCont();
    for (std::map<std::string, EdgeAttrs*>::const_iterator i=loadedEdges.begin(); i!=loadedEdges.end(); ++i) {
        EdgeAttrs *ed = (*i).second;
        // get and check the nodes
        NBNode *from = nodesCont.retrieve(ed->fromNode);
        NBNode *to = nodesCont.retrieve(ed->toNode);
        if (from==0) {
            MsgHandler::getErrorInstance()->inform("Edge's '" + ed->id + "' from-node '" + ed->fromNode + "' is not known.");
            continue;
        }
        if (to==0) {
            MsgHandler::getErrorInstance()->inform("Edge's '" + ed->id + "' to-node '" + ed->toNode + "' is not known.");
            continue;
        }
        // build and insert the edge
        NBEdge *e = new NBEdge(ed->id, from, to, ed->type, ed->maxSpeed, (unsigned int) ed->lanes.size(), ed->priority);
        if (!edgesCont.insert(e)) {
            MsgHandler::getErrorInstance()->inform("Could not insert edge '" + ed->id + "'.");
            delete e;
            continue;
        }
        ed->builtEdge = edgesCont.retrieve(ed->id);
    }
    // assign lane attributes (edges are built)
    for (std::map<std::string, EdgeAttrs*>::const_iterator i=loadedEdges.begin(); i!=loadedEdges.end(); ++i) {
        EdgeAttrs *ed = (*i).second;
        if (ed->builtEdge==0) {
            // earlier errors
            continue;
        }
        for (unsigned int j=0; j<(unsigned int) ed->lanes.size(); ++j) {
            const std::vector<EdgeLane> &connections = ed->lanes[j]->connections;
            for (std::vector<EdgeLane>::const_iterator k=connections.begin(); k!=connections.end(); ++k) {
                if ((*k).lane!="SUMO_NO_DESTINATION") {
                    std::string lane = (*k).lane;
                    std::string edge = lane.substr(0, lane.find('_'));
                    int index = TplConvert<char>::_2int(lane.substr(lane.find('_')+1).c_str());
                    if (loadedEdges.find(edge)==loadedEdges.end()) {
                        MsgHandler::getErrorInstance()->inform("Unknown edge given in succlane (for lane '" + lane + "').");
                        continue;
                    }
                    NBEdge *ce = loadedEdges.find(edge)->second->builtEdge;
                    if (ce==0) {
                        // earlier error or edge removal
                        continue;
                    }
                    ed->builtEdge->addLane2LaneConnection(j, ce, index, NBEdge::L2L_VALIDATED);
                }
            }
        }
    }
    // clean up
    for (std::map<std::string, EdgeAttrs*>::const_iterator i=loadedEdges.begin(); i!=loadedEdges.end(); ++i) {
        EdgeAttrs *ed = (*i).second;
        for (std::vector<LaneAttrs*>::const_iterator j=ed->lanes.begin(); j!=ed->lanes.end(); ++j) {
            delete *j;
        }
        delete ed;
    }
}