Esempio n. 1
0
  public JSONObject filterPlacesRandomly(
      JSONObject placesJSONObject, int finalPlacesNumberPerRequest, List<String> place_ids) {
    JSONObject initialJSON = (JSONObject) placesJSONObject.clone();
    JSONObject finalJSONObject = new JSONObject();
    int numberFields = placesJSONObject.size();
    int remainingPlaces = finalPlacesNumberPerRequest;
    int keywordsProcessed = 0;

    Set<String> keywords = initialJSON.keySet();

    for (String keyword : keywords) {
      JSONArray placesForKeyword = (JSONArray) initialJSON.get(keyword);
      JSONArray finalPlacesForKeyword = new JSONArray();
      int placesForKeywordSize = placesForKeyword.size();

      int maxPlacesToKeepInFinalJSON = remainingPlaces / (numberFields - keywordsProcessed);
      int placesToKeepInFinalJSON = Math.min(maxPlacesToKeepInFinalJSON, placesForKeywordSize);
      remainingPlaces -= placesToKeepInFinalJSON;

      for (int i = 0; i < placesToKeepInFinalJSON; i++) {
        int remainingPlacesInJSONArray = placesForKeyword.size();
        int randomElementPosInArray = (new Random()).nextInt(remainingPlacesInJSONArray);
        JSONObject temp = (JSONObject) placesForKeyword.remove(randomElementPosInArray);
        place_ids.add((String) temp.get("place_id"));
        finalPlacesForKeyword.add(temp);
      }

      finalJSONObject.put(keyword, finalPlacesForKeyword);
      keywordsProcessed++;
    }

    return finalJSONObject;
  }
Esempio n. 2
0
  protected void doPost(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException {
    try {
      JSONParser parser = new JSONParser();
      String originalRouteJsonString = request.getParameter("originalroutejsontext");
      JSONObject originalRouteJsonObject = (JSONObject) parser.parse(originalRouteJsonString);
      JSONObject routes = (JSONObject) ((JSONArray) originalRouteJsonObject.get("routes")).get(0);
      JSONArray legs = (JSONArray) routes.get("legs");
      JSONArray steps = (JSONArray) ((JSONObject) legs.get(0)).get("steps");

      String routeID = request.getParameter("routeid");
      // System.out.println("Route steps loaded in a JSONArray...size is " + steps.size());

      List<Double> stepLats = new ArrayList<Double>();
      List<Double> stepLngs = new ArrayList<Double>();

      for (int i = 0; i < steps.size(); i++) {
        JSONObject temp = (JSONObject) ((JSONObject) steps.get(i)).get("end_location");
        // System.out.println("Lat of end_location of step " + i + " " + temp.get("lat"));
        stepLats.add(Double.parseDouble(temp.get("lat").toString()));
        stepLngs.add(Double.parseDouble(temp.get("lng").toString()));
      }
      // System.out.println("All steps set with size " + stepLngs.size() + " and " +
      // stepLats.size());

      // System.out.println("Skipping route boxer...");
      // RouteBoxer routeBoxer = new RouteBoxer(stepLats, stepLngs,
      // Double.parseDouble(request.getParameter("radius")));

      // if(routeBoxer.getFlag())
      //  throw new RuntimeException("Could not create boxes for the route");

      // List<Double> boxLats = routeBoxer.getLats();
      // List<Double> boxLngs = routeBoxer.getLngs();

      // System.out.println("Calculated boxes with number of lats " + boxLats.size() + " and number
      // of lngs " + boxLngs.size());

      double r = Double.parseDouble(request.getParameter("radius").toString());
      int radius = r > RADIUS_TO_LOOK_FOR_PLACES ? RADIUS_TO_LOOK_FOR_PLACES : (int) r;

      String[] types = request.getParameter("keywords").split(",");
      System.out.println("Size of types is " + types.length);

      JSONObject finalPlacesJSONObject = new JSONObject();

      for (int j = 0; j < types.length; j++) {
        JSONArray jsonArrayForType = new JSONArray();

        for (int i = 0; i < stepLats.size(); i++) {
          JSONObject placesAroundLocationJSONObject =
              (JSONObject)
                  parser.parse(
                      GoogleMap.getPlacesAroundLocation(
                          stepLats.get(i), stepLngs.get(i), radius, types[j]));
          JSONArray placesAroundLocationJSONArray =
              (JSONArray) placesAroundLocationJSONObject.get("results");

          if (!placesAroundLocationJSONArray.isEmpty()) {
            jsonArrayForType.addAll(placesAroundLocationJSONArray);
          }
        }
        finalPlacesJSONObject.put(types[j], jsonArrayForType);
      }
      List<String> place_ids = new ArrayList<String>();

      finalPlacesJSONObject = removeDuplicatePlaces(finalPlacesJSONObject);
      finalPlacesJSONObject =
          filterPlacesRandomly(finalPlacesJSONObject, FINAL_PLACES_NUMBER_PER_REQUEST, place_ids);

      // System.out.println("MAGIC " + place_ids.toString());
      DatastoreService datastore = DatastoreServiceFactory.getDatastoreService();
      MemcacheService syncCache = MemcacheServiceFactory.getMemcacheService();

      // add places as a property of original route entity
      Entity originalRouteEntity =
          datastore.get(KeyFactory.createKey("Route", Long.parseLong(routeID)));
      Text placesJsonAsText = new Text(finalPlacesJSONObject.toJSONString());
      originalRouteEntity.setProperty("placesJSON", placesJsonAsText);
      datastore.put(originalRouteEntity);
      // System.out.println("SUCCESS written places to datastore");

      // add task for fetching place reviews to queue
      QueueFactory.getDefaultQueue()
          .add(
              TaskOptions.Builder.withUrl("/waypointsreview")
                  .param("places", place_ids.toString()));

      System.out.println("Task to get reviews added to queue");
      // We cache the route entity
      String cacheKey = "route-" + routeID;
      syncCache.put(cacheKey, originalRouteEntity);
    } catch (Exception e) {
      System.out.println("ERROR " + e.getMessage());
      e.printStackTrace();
    }
  }