/// <summary>
		/// 
		/// </summary>
		/// <param name="q"></param>
		public void AddAssociation(QueryTranslator q)
		{
			q.AddJoin(Name, joinSequence);
		}
		private void PrepareForIndex(QueryTranslator q)
		{
			IQueryableCollection collPersister = q.GetCollectionPersister(collectionRole);

			if (!collPersister.HasIndex)
			{
				throw new QueryException("unindexed collection before []");
			}
			string[] indexCols = collPersister.IndexColumnNames;
			if (indexCols.Length != 1)
			{
				throw new QueryException("composite-index appears in []: " + path);
			}

			JoinSequence fromJoins = new JoinSequence(q.Factory)
				.SetUseThetaStyle(useThetaStyleJoin)
				.SetRoot(collPersister, collectionName)
				.SetNext(joinSequence.Copy());

			if (!continuation)
			{
				AddJoin(collectionName, collPersister.CollectionType);
			}
			joinSequence.AddCondition(new SqlString(collectionName + '.' + indexCols[0] + " = "));

			CollectionElement elem = new CollectionElement();
			elem.ElementColumns = collPersister.GetElementColumnNames(collectionName);
			elem.Type = collPersister.ElementType;
			elem.IsOneToMany = collPersister.IsOneToMany;
			elem.Alias = collectionName;
			elem.JoinSequence = joinSequence;
			collectionElements.Add(elem); //addlast
			SetExpectingCollectionIndex();

			q.AddCollection(collectionName, collectionRole);
			q.AddJoin(collectionName, fromJoins);
		}