/** Get XML view */
 private InputStream getXMLViewAsInputStream(PriorityQueue priority_locs) throws Exception {
   Document doc = XMLHelper.createDocument(null, "locations");
   // Retrieve all the locations from the queue, the retrieved locations are sorted (closest
   // Location is retrieved first)
   int numberOfLocations =
       priority_locs
           .size(); // INFO: Please note that poll() will change the size, hence set it as fixed
                    // variable first!
   for (int i = 0; i < numberOfLocations; ++i) {
     Location loc = (Location) priority_locs.poll();
     String name = loc.getName();
     String distance = roundToOneDecimal(loc.getDistance());
     // log.debug("Distance: " + loc.getDistance() + ", " + distance);
     // sbView.append("<loc name=\"" + name + "\" distance=\"" + distance + "\" id=\"" +
     // loc.getID() + "\" href=\"" + "TODO" + "\"/>");
     Element locElem = doc.createElement("loc");
     locElem.setAttribute("name", name);
     locElem.setAttribute("distance", distance);
     locElem.setAttribute("id", loc.getID());
     // locElem.setAttribute("href", "TODO");
     doc.getDocumentElement().appendChild(locElem);
   }
   return XMLHelper.getInputStream(doc, false, false, null);
 }
  /** @see org.wyona.yanel.impl.resources.BasicXMLResource#getContentXML(String) */
  @Override
  protected InputStream getContentXML(String viewId) throws Exception {
    HttpServletRequest request = (HttpServletRequest) getEnvironment().getRequest();
    String query = request.getQueryString();
    if ((query == "" || query == null) && !(viewId == "json")) {
      String view = first_view(request);
      return new StringBufferInputStream(view);
    } else {
      String long_here = "";
      String lat_here = "";
      long_here = request.getParameter("long");
      lat_here = request.getParameter("lat");
      // long_here = "13.408056";
      // lat_here = "52.518611";
      log.debug("Longitude: " + long_here);
      log.debug("Latitude: " + lat_here);
      if (long_here == "" || lat_here == "" || long_here == null || lat_here == null) {
        StringBuilder sbView_disabled =
            new StringBuilder(
                "<html xmlns=\"http://www.w3.org/1999/xhtml\"><body><div><h1>Look for the most  convenient Store, according to your current position:</h1><p><ul>");
        sbView_disabled.append(
            "<li>The geolocation of your firefox is disabled. We're sorry but we can't provide you with the closest location.</li></ul></p></div></body></html>");
        return new StringBufferInputStream(sbView_disabled.toString());
      } else {
        Location users_loc =
            new Location(Double.parseDouble(lat_here), Double.parseDouble(long_here));
        Document xmlDoc;
        String xmlPath = getResourceConfigProperty("xml-path");
        if (xmlPath == null || xmlPath == "") {
          File xmlFile =
              org.wyona.commons.io.FileUtil.file(
                  rtd.getConfigFile().getParentFile().getAbsolutePath(),
                  "xml" + File.separator + "locations.xml");
          xmlDoc = XMLHelper.readDocument(new FileInputStream(xmlFile));
          log.warn(
              "No custom/specific locations file specified, hence default file is read: "
                  + rtd.getConfigFile().getParentFile().getAbsolutePath()
                  + "xml"
                  + File.separator
                  + "locations.xml");
        } else {
          xmlDoc =
              XMLHelper.readDocument(getRealm().getRepository().getNode(xmlPath).getInputStream());
        }
        Element element = xmlDoc.getDocumentElement();
        Element[] childElements = XMLHelper.getElements(element, "node", "", "");
        // Get all the locations specified in the xmlFile
        // fill ArrayLists with the Locations (including Name)
        ArrayList<Location> locations = new ArrayList();
        int i;
        for (i = 0; i < childElements.length; ++i) {
          String name = "";
          String longitude = "";
          String latitude = "";
          NodeList text_Node_list;
          org.w3c.dom.Node final_text_node;
          Element current_text_element = null;
          Element current_element = childElements[i];

          // INFO: Get the name
          Element[] name_elements = XMLHelper.getChildElements(current_element, "name", null);
          String contentLanguage = getContentLanguage();
          log.debug(
              "Number of 'name' elements: "
                  + name_elements.length
                  + " (Content language : "
                  + contentLanguage
                  + ")");
          if (name_elements.length >= 1) {
            try {
              name = getElementValue(name_elements[0]);
              if (name_elements.length > 1) {
                for (int j = 0; j < name_elements.length; j++) {
                  String langAttr = name_elements[j].getAttribute("xml:lang");
                  log.debug("Language of name element: " + langAttr);
                  if (langAttr != null && langAttr.equals(contentLanguage)) {
                    name = getElementValue(name_elements[j]);
                    break;
                  }
                }
              } else {
                log.info("Name '" + name + "' seems to exist only in one language.");
              }
            } catch (Exception e) {
              log.error(e.getMessage());
              return new StringBufferInputStream(getErrorMessageAsXHTML(e).toString());
            }
          } else {
            log.error("Location does not seem to have name!");
            StringBuilder sbView_error2 =
                new StringBuilder(
                    "<html xmlns=\"http://www.w3.org/1999/xhtml\"><body><div><h1>Look for the most  convenient Store, according to your current position:</h1><p><ul>");
            sbView_error2.append(
                "<li>We're sorry an error occured.</li></ul></p></div></body></html>");
            return new StringBufferInputStream(sbView_error2.toString());
          }

          // INFO: Get the latitude
          Element[] text_elements = XMLHelper.getElements(current_element, "latitude", "", "");
          current_text_element = text_elements[0];
          text_Node_list = current_text_element.getChildNodes();
          final_text_node = text_Node_list.item(0);
          // log.warn("How many names elements:" +
          // java.lang.Integer.toString((Integer)(text_Node_list.getLength())));
          latitude = final_text_node.getNodeValue();
          // Get the longitude
          text_elements = XMLHelper.getElements(current_element, "longitude", "", "");
          current_text_element = text_elements[0];
          text_Node_list = current_text_element.getChildNodes();
          final_text_node = text_Node_list.item(0);
          // log.warn("How many names elements:" +
          // java.lang.Integer.toString((Integer)(text_Node_list.getLength())));
          longitude = final_text_node.getNodeValue();
          // log.warn("This is the "+ ((Integer)i).toString() +"location with: " + longitude +
          // latitude+ "long, lat");
          // Collect all the predifined Location, we need to compare to the User's Location
          locations.add(
              new Location(
                  Double.parseDouble(latitude),
                  Double.parseDouble(longitude),
                  name,
                  current_element.getAttribute("id")));
        }
        int n = locations.toArray().length;
        PriorityQueue<Location> priority_locs = new PriorityQueue();
        // Calculate Distance for all Locations;
        for (i = 0; i < n; i++) {
          Location current_location = locations.get(i);
          double dist = GeoUtil.getDistance(users_loc, current_location);
          // Set distance in order to copmare it accordingly (Comparision of a Location-Class
          // Instance is difined by their its set distance)
          current_location.setDistance(dist);
          priority_locs.add(current_location);
        }

        if (viewId.equals("json")) {
          log.warn("DEBUG: Get JSON view...");
          return getXMLViewAsInputStream(priority_locs);
          // return new StringBufferInputStream(getXMLView(priority_locs));
        } else {
          log.warn("DEBUG: Get XML/XHTML view...");
          return new StringBufferInputStream(getXHTMLView(priority_locs));
        }
      }
    }
  }