/**
* Add a collection of IDs. The IDs are copied into the builder, not referenced.
*
* @param ids The IDs to add.
* @return The builder (for chaining)
*/
public ScoredIdListBuilder addAll(Iterable<ScoredId> ids) {
Preconditions.checkState(ids != null, "builder has been finished");
// fast iteration is safe since add() doesn't retain the id object
for (ScoredId id : CollectionUtils.fast(ids)) {
add(id);
}
return this;
}
@Override
public LongSet getUsersForItem(long item) {
List<Event> events = getEventsForItem(item);
if (events == null) {
return null;
}
LongSet users = new LongOpenHashSet();
for (Event evt : CollectionUtils.fast(events)) {
users.add(evt.getUserId());
}
return users;
}
@Override
public ObjectCollection<Double> values() {
return CollectionUtils.objectCollection(vector.values());
}
public void writeRatings(Iterable<? extends Rating> ratings) throws IOException {
for (Rating r : CollectionUtils.fast(ratings)) {
writeRating(r);
}
}