Package org.apache.mahout.cf.taste.common

Examples of org.apache.mahout.cf.taste.common.NoSuchUserException

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   */
  @Override
  public User getUser(Object id) throws NoSuchUserException {
    User user = userMap.get(id);
    if (user == null) {
      throw new NoSuchUserException();
    }
    return user;
  }
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      while (rs.next()) {
        addPreference(rs, prefs);
      }

      if (prefs.isEmpty()) {
        throw new NoSuchUserException();
      }

      return buildUser(idString, prefs);

    } catch (SQLException sqle) {
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  }

  public double[] getUserFeatures(long userID) throws NoSuchUserException {
    Integer index = userIDMapping.get(userID);
    if (index == null) {
      throw new NoSuchUserException(userID);
    }
    return userFeatures[index];
  }
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  }

  public int userIndex(long userID) throws NoSuchUserException {
    Integer index = userIDMapping.get(userID);
    if (index == null) {
      throw new NoSuchUserException(userID);
    }
    return index;
  }
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   */
  @Override
  public PreferenceArray getPreferencesFromUser(long userID) throws NoSuchUserException {
    PreferenceArray prefs = preferenceFromUsers.get(userID);
    if (prefs == null) {
      throw new NoSuchUserException(userID);
    }
    return prefs;
  }
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    if (timestamps == null) {
      return null;
    }
    FastByIDMap<Long> itemTimestamps = timestamps.get(userID);
    if (itemTimestamps == null) {
      throw new NoSuchUserException(userID);
    }
    return itemTimestamps.get(itemID);
  }
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   */
  @Override
  public PreferenceArray getPreferencesFromUser(long userID) throws NoSuchUserException {
    FastIDSet itemIDs = preferenceFromUsers.get(userID);
    if (itemIDs == null) {
      throw new NoSuchUserException(userID);
    }
    PreferenceArray prefArray = new BooleanUserPreferenceArray(itemIDs.size());
    int i = 0;
    LongPrimitiveIterator it = itemIDs.iterator();
    while (it.hasNext()) {
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  @Override
  public FastIDSet getItemIDsFromUser(long userID) throws TasteException {
    FastIDSet itemIDs = preferenceFromUsers.get(userID);
    if (itemIDs == null) {
      throw new NoSuchUserException(userID);
    }
    return itemIDs;
  }
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  @Override
  public Float getPreferenceValue(long userID, long itemID) throws NoSuchUserException {
    FastIDSet itemIDs = preferenceFromUsers.get(userID);
    if (itemIDs == null) {
      throw new NoSuchUserException(userID);
    }
    if (itemIDs.contains(itemID)) {
      return 1.0f;
    }
    return null;
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    if (timestamps == null) {
      return null;
    }
    FastByIDMap<Long> itemTimestamps = timestamps.get(userID);
    if (itemTimestamps == null) {
      throw new NoSuchUserException(userID);
    }
    return itemTimestamps.get(itemID);
  }
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