Beispiel #1
0
  @Override
  protected void doGet(HttpServletRequest request, HttpServletResponse response)
      throws IOException {

    CharSequence pathInfo = request.getPathInfo();
    if (pathInfo == null) {
      response.sendError(HttpServletResponse.SC_BAD_REQUEST, "No path");
      return;
    }
    Iterator<String> pathComponents = SLASH.split(pathInfo).iterator();
    String userID;
    List<String> itemIDsList;
    try {
      userID = pathComponents.next();
      itemIDsList = Lists.newArrayList();
      while (pathComponents.hasNext()) {
        itemIDsList.add(pathComponents.next());
      }
    } catch (NoSuchElementException nsee) {
      response.sendError(HttpServletResponse.SC_BAD_REQUEST, nsee.toString());
      return;
    }

    String[] itemIDs = itemIDsList.toArray(new String[itemIDsList.size()]);
    unescapeSlashHack(itemIDs);

    OryxRecommender recommender = getRecommender();
    try {
      float[] estimates = recommender.estimatePreferences(userID, itemIDs);
      output(request, response, estimates);
    } catch (NotReadyException nre) {
      response.sendError(HttpServletResponse.SC_SERVICE_UNAVAILABLE, nre.toString());
    }
  }
Beispiel #2
0
  @Override
  protected void doGet(HttpServletRequest request, HttpServletResponse response)
      throws IOException {

    CharSequence pathInfo = request.getPathInfo();
    if (pathInfo == null) {
      response.sendError(HttpServletResponse.SC_BAD_REQUEST, "No path");
      return;
    }
    Iterator<String> pathComponents = SLASH.split(pathInfo).iterator();
    String userID;
    String itemID;
    try {
      userID = pathComponents.next();
      itemID = pathComponents.next();
    } catch (NoSuchElementException nsee) {
      response.sendError(HttpServletResponse.SC_BAD_REQUEST, nsee.toString());
      return;
    }
    if (pathComponents.hasNext()) {
      response.sendError(HttpServletResponse.SC_BAD_REQUEST, "Path too long");
      return;
    }

    userID = unescapeSlashHack(userID);
    itemID = unescapeSlashHack(itemID);

    OryxRecommender recommender = getRecommender();
    try {
      output(
          request,
          response,
          recommender.recommendedBecause(userID, itemID, getNumResultsToFetch(request)));
    } catch (NoSuchUserException nsue) {
      response.sendError(HttpServletResponse.SC_NOT_FOUND, nsue.toString());
    } catch (NoSuchItemException nsie) {
      response.sendError(HttpServletResponse.SC_NOT_FOUND, nsie.toString());
    } catch (NotReadyException nre) {
      response.sendError(HttpServletResponse.SC_SERVICE_UNAVAILABLE, nre.toString());
    } catch (IllegalArgumentException iae) {
      response.sendError(HttpServletResponse.SC_BAD_REQUEST, iae.toString());
    } catch (UnsupportedOperationException uoe) {
      response.sendError(HttpServletResponse.SC_BAD_REQUEST, uoe.toString());
    }
  }