// use ordinals to speed up access to DataReader // links: // crud definition: https://en.wikipedia.org/wiki/Create,_read,_update_and_delete // docLink: http://sql2x.org/documentationLink/327451c3-64a8-4de8-b359-76742d634497 // parameters: // reader: IDataReader from SQLClient public void Populate(IDataReader reader, DefaultPerformanceIssueFetchWithFilterDataOrdinals ordinals) { if (!reader.IsDBNull(ordinals.DateTime)) { DateTime = reader.GetDateTime(ordinals.DateTime); } if (!reader.IsDBNull(ordinals.CommandName)) { CommandName = reader.GetString(ordinals.CommandName); } if (!reader.IsDBNull(ordinals.Milliseconds)) { Milliseconds = reader.GetInt32(ordinals.Milliseconds); } if (!reader.IsDBNull(ordinals.DefaultPerformanceIssueId)) { DefaultPerformanceIssueId = reader.GetGuid(ordinals.DefaultPerformanceIssueId); } }
/// <summary>Get Default Performance Issue</summary> /// <cardinality>Many</cardinality> public List <DefaultPerformanceIssueFetchWithFilterData> DefaultPerformanceIssueFetchWithFilter( System.String commandName ) { var ret = new List <DefaultPerformanceIssueFetchWithFilterData>(); string sql = @"select dpi.date_time ,dpi.command_name ,dpi.milliseconds ,dpi.default_performance_issue_id from default_performance_issue as dpi order by dpi.date_time desc "; Logging log = Logging.PerformanceTimeStart("DefaultPerformanceIssueFetchWithFilter"); try { using (var conn = new SqlConnection(Conn.ConnectionString)) { conn.Open(); conn.BeginTransaction(IsolationLevel.ReadUncommitted).Commit(); using (var command = new SqlCommand(sql, conn)) { log.PerformanceTimePrepare(command); IDataReader reader = command.ExecuteReader(CommandBehavior.SingleResult); log.PerformanceTimeCheck(); var ordinals = new DefaultPerformanceIssueFetchWithFilterDataOrdinals(reader); while (reader.Read()) { var data = new DefaultPerformanceIssueFetchWithFilterData(); data.Populate(reader, ordinals); ret.Add(data); } reader.Close(); } } } catch (Exception ex) { log.Error(ex); } return(ret); }