/**
* Get a user's ratings.
*
* @param user The user ID.
* @return The ratings to retrieve.
*/
private SparseVector getUserRatingVector(long user) {
UserHistory<Rating> history = userEvents.getEventsForUser(user, Rating.class);
if (history == null) {
history = History.forUser(user);
}
return RatingVectorUserHistorySummarizer.makeRatingVector(history);
}
/**
* It is used to generate rating list from UserEventDAO.
*
* @param uid The user ID.
* @param dao The UserEventDAO.
* @return The VectorEntry list of rating.
*/
private SparseVector makeUserVector(long uid, UserEventDAO dao) {
UserHistory<Rating> history = dao.getEventsForUser(uid, Rating.class);
SparseVector vector = null;
if (history != null) {
vector = RatingVectorUserHistorySummarizer.makeRatingVector(history);
}
return vector;
}