private void HandleWithFragment(FromElement fromElement, IASTNode hqlWithNode) { try { ITreeNodeStream old = input; input = new CommonTreeNodeStream(adaptor, hqlWithNode); IASTNode hqlSqlWithNode = (IASTNode) withClause().Tree; input = old; if (log.IsDebugEnabled) { log.Debug("handleWithFragment() : " + _printer.ShowAsString(hqlSqlWithNode, "-- with clause --")); } WithClauseVisitor visitor = new WithClauseVisitor(fromElement); NodeTraverser traverser = new NodeTraverser(visitor); traverser.TraverseDepthFirst(hqlSqlWithNode); FromElement referencedFromElement = visitor.GetReferencedFromElement(); if (referencedFromElement != fromElement) { throw new InvalidWithClauseException( "with-clause expressions did not reference from-clause element to which the with-clause was associated"); } SqlGenerator sql = new SqlGenerator(_sessionFactoryHelper.Factory, new CommonTreeNodeStream(adaptor, hqlSqlWithNode.GetChild(0))); sql.whereExpr(); var withClauseFragment = new SqlString("(", sql.GetSQL(), ")"); fromElement.SetWithClauseFragment(visitor.GetJoinAlias(), withClauseFragment); } catch (SemanticException) { throw; } catch (InvalidWithClauseException) { throw; } catch (Exception e) { throw new SemanticException(e.Message); } }