Bookstore.BooksImporter.BooksImporterUI.ComplexBooksImport C# (CSharp) Метод

        static void ComplexBooksImport(BooksDAO booksDao, string xmlFilePath)
        {
            XmlDocument catalogDocument = new XmlDocument();
            catalogDocument.Load(xmlFilePath);
            string xPathBooksQuery = "/catalog/book";
            XmlNodeList bookNodesList = catalogDocument.SelectNodes(xPathBooksQuery);
            foreach (XmlNode bookNode in bookNodesList)
            {
                string title = GetInnerXml(bookNode, "title").Trim();

                IList<string> authorNames = new List<string>();
                GetAuthors(bookNode, authorNames);

                IList<ReviewTransferObject> reviewTransferObjects =
                    new List<ReviewTransferObject>();
                GetReviews(bookNode, reviewTransferObjects);

                string isbn = GetInnerXml(bookNode, "isbn");

                string webSite = GetInnerXml(bookNode, "web-site");
                if (webSite != null)
                {
                    webSite = webSite.Trim();
                }

                decimal? price = null;
                string priceAsString = GetInnerXml(bookNode, "price");
                if (priceAsString != null)
                {
                    price = decimal.Parse(priceAsString);
                }

                using (TransactionScope transcationScope = new TransactionScope(TransactionScopeOption.Required,
                    new TransactionOptions() { IsolationLevel = IsolationLevel.RepeatableRead }))
                {
                    booksDao.ComplexImportOfBook(authorNames, title, reviewTransferObjects, isbn, price, webSite);
                    transcationScope.Complete();
                }
            }
        }