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

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

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   */
  @Override
  public PreferenceArray getPreferencesFromUser(long userID) throws NoSuchUserException {
    FastIDSet itemIDs = preferenceFromUsers.get(userID);
    if (itemIDs == null) {
      throw new NoSuchUserException();
    }
    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();
    }
    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();
    }
    if (itemIDs.contains(itemID)) {
      return 1.0f;
    }
    return null;
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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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      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 PreferenceArray getPreferencesFromUser(long userID) throws NoSuchUserException {
    FastIDSet itemIDs = preferenceFromUsers.get(userID);
    if (itemIDs == null) {
      throw new NoSuchUserException();
    }
    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();
    }
    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();
    }
    if (itemIDs.contains(itemID)) {
      return 1.0f;
    }
    return null;
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