상속: DbContext
        static void Main()
        {
            Thread.CurrentThread.CurrentCulture = CultureInfo.InvariantCulture;

            XmlDocument queryDocument = new XmlDocument();
            queryDocument.Load("../../reviews-queries.xml");
            using (XmlTextWriter writer = new XmlTextWriter("../../reviews-search-results.xml", Encoding.UTF8))
            {
                InitializeWriter(writer);

                writer.WriteStartDocument();
                writer.WriteStartElement("search-results");

                ReviewsDAO reviewsDao = new ReviewsDAO();

                using (LogsContext logsContext = new LogsContext())
                {
                    XmlNodeList queryNodes = queryDocument.SelectNodes("/review-queries/query");
                    foreach (XmlNode queryNode in queryNodes)
                    {
                        LogQuery(logsContext, queryNode.OuterXml);

                        WriteResultSet(writer, reviewsDao, queryNode);
                    }

                    writer.WriteEndDocument();
                }
            }

            Console.WriteLine("Done! See the file in project's directory.");
        }
        static void LogQuery(LogsContext context, string queryXml)
        {
            SearchLog newLog = new SearchLog();
            newLog.Date = DateTime.Now;
            newLog.QueryXml = queryXml;

            context.SearchLogs.Add(newLog);
            context.SaveChanges();
        }