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

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

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  @Override
  public Float getPreferenceValue(long userID, long itemID) throws TasteException {
    if (userID == TEMP_USER_ID) {
      if (tempPrefs == null) {
        throw new NoSuchUserException();
      }
      for (int i = 0; i < tempPrefs.length(); i++) {
        if (tempPrefs.getItemID(i) == itemID) {
          return tempPrefs.getValue(i);
        }
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  @Override
  public Long getPreferenceTime(long userID, long itemID) throws TasteException {
    if (userID == TEMP_USER_ID) {
      if (tempPrefs == null) {
        throw new NoSuchUserException();
      }
      return null;
    }
    return delegate.getPreferenceTime(userID, itemID);
  }
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  @Override
  public void setPreference(long userID, long itemID, float value) throws TasteException {
    if (userID == TEMP_USER_ID) {
      if (tempPrefs == null) {
        throw new NoSuchUserException();
      }
      throw new UnsupportedOperationException();
    }
    delegate.setPreference(userID, itemID, value);
  }
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  @Override
  public void removePreference(long userID, long itemID) throws TasteException {
    if (userID == TEMP_USER_ID) {
      if (tempPrefs == null) {
        throw new NoSuchUserException();
      }
      throw new UnsupportedOperationException();
    }
    delegate.removePreference(userID, itemID);
  }
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   */
  @Override
  public PreferenceArray getPreferencesFromUser(long userID) throws NoSuchUserException {
    PreferenceArray prefs = preferenceFromUsers.get(userID);
    if (prefs == null) {
      throw new NoSuchUserException();
    }
    return prefs;
  }
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    if (timestamps == null) {
      return null;
    }
    FastByIDMap<Long> itemTimestamps = timestamps.get(userID);
    if (itemTimestamps == null) {
      throw new NoSuchUserException();
    }
    return itemTimestamps.get(itemID);
  }
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      while (rs.next()) {
        prefs.add(buildPreference(rs));
      }

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

      return new GenericUserPreferenceArray(prefs);

    } catch (SQLException sqle) {
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      while (rs.next()) {
        result.add(getLongColumn(rs, 2));
      }

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

      return result;

    } catch (SQLException sqle) {
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  @Override
  public float estimatePreference(long userID, long itemID) throws TasteException {
    Integer useridx = userMap.get(userID);
    if (useridx == null) {
      throw new NoSuchUserException();
    }
    Integer itemidx = itemMap.get(itemID);
    if (itemidx == null) {
      throw new NoSuchItemException();
    }
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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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