Carrotware.CMS.Core.ContentPage.SaveKeywordsAndTags C# (CSharp) Метод

        private void SaveKeywordsAndTags(CarrotCMSDataContext _db)
        {
            IQueryable<carrot_TagContentMapping> oldContentTags = CannedQueries.GetContentTagMapByContentID(_db, this.Root_ContentID);
            IQueryable<carrot_CategoryContentMapping> oldContentCategories = CannedQueries.GetContentCategoryMapByContentID(_db, this.Root_ContentID);

            if (this.ContentType == ContentPageType.PageType.BlogEntry) {
                List<carrot_TagContentMapping> newContentTags = (from x in this.ContentTags
                                                                 select new carrot_TagContentMapping {
                                                                     ContentTagID = x.ContentTagID,
                                                                     Root_ContentID = this.Root_ContentID,
                                                                     TagContentMappingID = Guid.NewGuid()
                                                                 }).ToList();

                List<carrot_CategoryContentMapping> newContentCategories = (from x in this.ContentCategories
                                                                            select new carrot_CategoryContentMapping {
                                                                                ContentCategoryID = x.ContentCategoryID,
                                                                                Root_ContentID = this.Root_ContentID,
                                                                                CategoryContentMappingID = Guid.NewGuid()
                                                                            }).ToList();

                foreach (carrot_TagContentMapping s in newContentTags) {
                    _db.carrot_TagContentMappings.InsertOnSubmit(s);
                }
                foreach (carrot_CategoryContentMapping s in newContentCategories) {
                    _db.carrot_CategoryContentMappings.InsertOnSubmit(s);
                }
            }

            _db.carrot_TagContentMappings.BatchDelete(oldContentTags);
            _db.carrot_CategoryContentMappings.BatchDelete(oldContentCategories);
        }