franta-hg@100: package cz.frantovo.nekurak.ejb;
franta-hg@100: 
franta-hg@100: import java.io.UnsupportedEncodingException;
franta-hg@100: import java.net.URLEncoder;
franta-hg@100: import java.util.logging.Level;
franta-hg@100: import java.util.logging.Logger;
franta-hg@100: import javax.xml.parsers.DocumentBuilder;
franta-hg@100: import javax.xml.parsers.DocumentBuilderFactory;
franta-hg@100: import org.w3c.dom.Document;
franta-hg@100: import org.w3c.dom.Node;
franta-hg@100: import org.w3c.dom.NodeList;
franta-hg@100: 
franta-hg@100: /**
franta-hg@100:  * TODO: přesunout jinam a převést na EJB.
franta-hg@100:  * @author fiki
franta-hg@100:  */
franta-hg@100: public class Geo {
franta-hg@100: 
franta-hg@100:     private static final Logger log = Logger.getLogger(Geo.class.getSimpleName());
franta-hg@100: 
franta-hg@100:     /**
franta-hg@100:      * Převede poštovní adresu na zeměpisné souřadnice.
franta-hg@100:      * @param adresa
franta-hg@100:      * @return souřadnice k dané adrese nebo null, v případě chyby.
franta-hg@100:      */
franta-hg@100:     public Souradnice getSouradnice(String adresa) {
franta-hg@100: 	try {
franta-hg@100: 
franta-hg@100: 	    /**
franta-hg@100: 	     * TODO: naprosto zprasené → předělat →
franta-hg@100: 	     * http://code.google.com/intl/cs/apis/maps/documentation/geocoding/#XMLParsing
franta-hg@100: 	     */
franta-hg@100: 	    DocumentBuilder db = DocumentBuilderFactory.newInstance().newDocumentBuilder();
franta-hg@100: 	    Document d = db.parse(sestavURL(adresa));
franta-hg@100: 	    NodeList mista = d.getElementsByTagName("location");
franta-hg@100: 	    Node misto = mista.item(0);
franta-hg@100: 	    NodeList potomci = misto.getChildNodes();
franta-hg@100: 	    String delka = null;
franta-hg@100: 	    String sirka = null;
franta-hg@100: 	    for (int i = 0; i < potomci.getLength(); i++) {
franta-hg@100: 		Node p = potomci.item(i);
franta-hg@100: 		System.out.println("XML:" + p.getNodeName() + "|" + p.getTextContent());
franta-hg@100: 		if ("lat".equals(p.getNodeName())) {
franta-hg@100: 		    sirka = p.getTextContent();
franta-hg@100: 		}
franta-hg@100: 		if ("lng".equals(p.getNodeName())) {
franta-hg@100: 		    delka = p.getTextContent();
franta-hg@100: 		}
franta-hg@100: 	    }
franta-hg@100: 
franta-hg@100: 	    if (sirka == null || delka == null) {
franta-hg@100: 		log.log(Level.WARNING, "Selhalo zjišťování souřadnic – šířka nebo délka jsou null – pro adresu: " + adresa);
franta-hg@100: 		return null;
franta-hg@100: 	    } else {
franta-hg@100: 		return new Souradnice(Double.parseDouble(sirka), Double.parseDouble(delka));
franta-hg@100: 	    }
franta-hg@100: 	} catch (Exception e) {
franta-hg@100: 	    log.log(Level.WARNING, "Selhalo zjišťování souřadnic pro adresu: " + adresa, e);
franta-hg@100: 	    return null;
franta-hg@100: 	}
franta-hg@100:     }
franta-hg@100: 
franta-hg@100:     private static String sestavURL(String adresa) throws UnsupportedEncodingException {
franta-hg@100: 	return "http://maps.google.com/maps/api/geocode/xml?sensor=false&address=" + URLEncoder.encode(adresa, "UTF-8");
franta-hg@100:     }
franta-hg@100: 
franta-hg@100:     public class Souradnice {
franta-hg@100: 
franta-hg@100: 	private double sirka;
franta-hg@100: 	private double delka;
franta-hg@100: 
franta-hg@100: 	@Override
franta-hg@100: 	public String toString() {
franta-hg@100: 	    return "šířka = " + sirka + "; délka = " + delka + ";";
franta-hg@100: 	}
franta-hg@100: 
franta-hg@100: 	public Souradnice(double sirka, double delka) {
franta-hg@100: 	    this.sirka = sirka;
franta-hg@100: 	    this.delka = delka;
franta-hg@100: 	}
franta-hg@100: 
franta-hg@100: 	public String getLoc() {
franta-hg@100: 	    return "Loc: " + sirka + ", " + delka;
franta-hg@100: 	}
franta-hg@100: 
franta-hg@100: 	public double getDelka() {
franta-hg@100: 	    return delka;
franta-hg@100: 	}
franta-hg@100: 
franta-hg@100: 	public double getSirka() {
franta-hg@100: 	    return sirka;
franta-hg@100: 	}
franta-hg@100: 
franta-hg@100: 	public void setDelka(double delka) {
franta-hg@100: 	    this.delka = delka;
franta-hg@100: 	}
franta-hg@100: 
franta-hg@100: 	public void setSirka(double sirka) {
franta-hg@100: 	    this.sirka = sirka;
franta-hg@100: 	}
franta-hg@100:     }
franta-hg@100: }