C# IASTNode.AddChild方法代码示例

		private static void AddImpliedFromToFromNode(IASTNode fromClause, string collectionRole, ISessionFactoryImplementor factory)
		{
			SessionFactoryHelperExtensions _sessionFactoryHelper = new SessionFactoryHelperExtensions(factory);
			IQueryableCollection persister = _sessionFactoryHelper.GetCollectionPersister(collectionRole);
			IType collectionElementType = persister.ElementType;
			if (!collectionElementType.IsEntityType)
			{
				throw new QueryException("collection of values in filter: this");
			}

			string collectionElementEntityName = persister.ElementPersister.EntityName;

			ITreeAdaptor adaptor = new ASTTreeAdaptor();

			IASTNode fromElement = (IASTNode)adaptor.Create(HqlParser.FILTER_ENTITY, collectionElementEntityName);
			IASTNode alias = (IASTNode)adaptor.Create(HqlParser.ALIAS, "this");

			fromClause.AddChild(fromElement);
			fromClause.AddChild(alias);

			// Show the modified AST.
			if (log.IsDebugEnabled)
			{
				log.Debug("AddImpliedFormToFromNode() : Filter - Added 'this' as a from element...");
			}
		}

		/// <summary>
		/// Insert a new node into both the Tree and the Node Array. Add DOWN and UP nodes if needed.
		/// </summary>
		/// <param name="parent">The parent node</param>
		/// <param name="child">The child node</param>
		public void InsertChild(IASTNode parent, IASTNode child)
		{
			if (child.ChildCount > 0)
			{
				throw new InvalidOperationException("Currently do not support adding nodes with children");
			}

			int parentIndex = nodes.IndexOf(parent);
			int numberOfChildNodes = NumberOfChildNodes(parentIndex);
			int insertPoint;
			
			if (numberOfChildNodes == 0)
			{
				insertPoint = parentIndex + 1;  // We want to insert immediately after the parent
				nodes.Insert(insertPoint, down);
				insertPoint++;  // We've just added a new node
			}
			else
			{
				insertPoint = parentIndex + numberOfChildNodes;
			}

			parent.AddChild(child);
			nodes.Insert(insertPoint, child);
			insertPoint++;

			if (numberOfChildNodes == 0)
			{
				nodes.Insert(insertPoint, up);
			}
		}

        protected HqlTreeNode(int type, string text, IASTFactory factory, params HqlTreeNode[] children)
        {
            _node = factory.CreateNode(type, text);
            _children = new List<HqlTreeNode>();

            foreach (var child in children)
            {
                _children.Add(child);
                _node.AddChild(child.AstNode);
            }
        }

		void PrepareFromClauseInputTree(IASTNode fromClauseInput, ITreeNodeStream input)
		{
			if (IsFilter())
			{
				// Handle collection-fiter compilation.
				// IMPORTANT NOTE: This is modifying the INPUT (HQL) tree, not the output tree!
				IQueryableCollection persister = _sessionFactoryHelper.GetCollectionPersister(_collectionFilterRole);
				IType collectionElementType = persister.ElementType;
				if (!collectionElementType.IsEntityType)
				{
					throw new QueryException("collection of values in filter: this");
				}

				string collectionElementEntityName = persister.ElementPersister.EntityName;

				IASTNode fromElement = (IASTNode)adaptor.Create(FILTER_ENTITY, collectionElementEntityName);
				IASTNode alias = (IASTNode)adaptor.Create(ALIAS, "this");

				fromClauseInput.AddChild(fromElement);
				fromClauseInput.AddChild(alias);

				// Show the modified AST.
				if (log.IsDebugEnabled)
				{
					log.Debug("prepareFromClauseInputTree() : Filter - Added 'this' as a from element...");
				}
				
				// Create a parameter specification for the collection filter...
				IType collectionFilterKeyType = _sessionFactoryHelper.RequireQueryableCollection(_collectionFilterRole).KeyType;
				ParameterNode collectionFilterKeyParameter = (ParameterNode)adaptor.Create(PARAM, "?");
				CollectionFilterKeyParameterSpecification collectionFilterKeyParameterSpec = new CollectionFilterKeyParameterSpecification(
						_collectionFilterRole, collectionFilterKeyType, _positionalParameterCount++
				);
				collectionFilterKeyParameter.HqlParameterSpecification = collectionFilterKeyParameterSpec;
				_parameters.Add(collectionFilterKeyParameterSpec);
			}
		}