ns2::NetReader Class Reference

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Detailed Description

class for reading net file

Author:

Thimor Bohn <bohn@itm.uni-luebeck.de>

Definition at line 19 of file ns2/NetReader.java.

Static Public Member Functions
static void	read (String net, List< Edge > edges, Map< String, Junction > junctions)

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Member Function Documentation

static void ns2::NetReader::read	(	String	net,
		List< Edge >	edges,
		Map< String, Junction >	junctions
	)			[inline, static]

method for reading sumo net file

Parameters:

	net	name of sumo net file
	edges	holds net after execution

Definition at line 25 of file ns2/NetReader.java.

References ns2::Edge::lanes.

                                                                                           {        
        try {
            InputStream in = new FileInputStream(net);
            XMLInputFactory factory = XMLInputFactory.newInstance();
            XMLStreamReader parser = factory.createXMLStreamReader(in);
            // parse net file
            Edge edge = null;
            for (int event = parser.next(); event != XMLStreamConstants.END_DOCUMENT; event = parser.next()) {
                if (event == XMLStreamConstants.START_ELEMENT) {
                    // edge element found
                    if (parser.getLocalName().equals("edge")) {
                        String id    = "";
                        String from  = "";
                        String to    = "";
                        // parse attributes of element
                        for (int attr=0; attr < parser.getAttributeCount(); attr++) {
                            String attrName = parser.getAttributeLocalName(attr);
                            String value = parser.getAttributeValue(attr);
                            if ("id".equals(attrName)) {
                                id = value;
                            }
                            if ("from".equals(attrName)) {
                                from = value;
                            }
                            if ("to".equals(attrName)) {
                                to = value;
                            }
                            
                        }
                        // construct edge element
                        edge = new Edge(id, from, to);
                        // store edge
                        edges.add(edge);
                    }
                    if (parser.getLocalName().equals("lane")) {
                        String id      = "";
                        float xfrom    = 0;
                        float xto      = 0;
                        float yfrom    = 0;
                        float yto      = 0;
                        float length   = 0;
                        boolean hadShape = false;
                        // parse attributes of element
                        for (int attr=0; attr < parser.getAttributeCount(); attr++) {
                            String attrName = parser.getAttributeLocalName(attr);
                            String value = parser.getAttributeValue(attr);
                            if ("id".equals(attrName)) {
                                id = value;
                            }
                            if ("length".equals(attrName)) {
                                length = Float.parseFloat(value);
                            }
                            if ("shape".equals(attrName)) {
                                String[] vals = value.split("[,\\ ]"); // separate by delimiters "," and " "
                                xfrom = Float.parseFloat(vals[0]);
                                yfrom = Float.parseFloat(vals[1]);
                                xto   = Float.parseFloat(vals[2]);
                                yto   = Float.parseFloat(vals[3]);
                                hadShape = true;
                            }
                        }
                        if(!hadShape) {
                            String text   = parser.getElementText();
                            String[] vals = text.split("[,\\ ]"); // separate by delimiters "," and " "
                            xfrom = Float.parseFloat(vals[0]);
                            yfrom = Float.parseFloat(vals[1]);
                            xto   = Float.parseFloat(vals[2]);
                            yto   = Float.parseFloat(vals[3]);
                        }
                        edge.lanes.put(id, new Lane(id, xfrom, xto, yfrom, yto, length));
                    }
                    if (parser.getLocalName().equals("junction")) {
                        String id = "";
                        float x = 0;
                        float y = 0;
                        // parse attributes of element
                        for (int attr=0; attr < parser.getAttributeCount(); attr++) {
                            String attrName = parser.getAttributeLocalName(attr);
                            String value = parser.getAttributeValue(attr);
                            if ("id".equals(attrName)) {
                                id = value;
                            }
                            if ("x".equals(attrName)) {
                                x = Float.parseFloat(value);
                            }
                            if ("y".equals(attrName)) {
                                y = Float.parseFloat(value);
                            }
                        }
                        Junction junction = new Junction(id, x, y);
                        junctions.put(id, junction);
                    }
                }
            }
            parser.close();
        } catch (XMLStreamException ex) {
            System.err.println(ex);
        } catch (IOException ex) {
            System.err.println(ex);
        }
    }

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The documentation for this class was generated from the following file:

• ns2/NetReader.java