/// <summary>
/// Заполнить объект dest из файла событий FileName
/// </summary>
protected void FillObj(object dest)
{
Stream stream = null;
BinaryReader reader = null;
DateTime fillTime = DateTime.Now;
EventTableLight eventTableLight = null;
DataTable dataTable = null;
try
{
if (dest is EventTableLight)
{
eventTableLight = dest as EventTableLight;
}
else if (dest is DataTable)
{
dataTable = dest as DataTable;
}
else
{
throw new ScadaException("Destination object is invalid.");
}
// определение даты событий в таблице
DateTime date = ExtractDate(tableName);
// подготовка объекта для хранения данных
if (eventTableLight != null)
{
eventTableLight.Clear();
eventTableLight.TableName = tableName;
}
else // dataTable != null
{
// формирование структуры таблицы
dataTable.BeginLoadData();
dataTable.DefaultView.Sort = "";
if (dataTable.Columns.Count == 0)
{
dataTable.Columns.Add("Number", typeof(int));
dataTable.Columns.Add("DateTime", typeof(DateTime)).DefaultValue = date;
dataTable.Columns.Add("ObjNum", typeof(int)).DefaultValue = 0;
dataTable.Columns.Add("KPNum", typeof(int)).DefaultValue = 0;
dataTable.Columns.Add("ParamID", typeof(int)).DefaultValue = 0;
dataTable.Columns.Add("CnlNum", typeof(int)).DefaultValue = 0;
dataTable.Columns.Add("OldCnlVal", typeof(double)).DefaultValue = 0.0;
dataTable.Columns.Add("OldCnlStat", typeof(int)).DefaultValue = 0;
dataTable.Columns.Add("NewCnlVal", typeof(double)).DefaultValue = 0.0;
dataTable.Columns.Add("NewCnlStat", typeof(int)).DefaultValue = 0;
dataTable.Columns.Add("Checked", typeof(bool)).DefaultValue = false;
dataTable.Columns.Add("UserID", typeof(int)).DefaultValue = 0;
dataTable.Columns.Add("Descr", typeof(string));
dataTable.Columns.Add("Data", typeof(string));
dataTable.DefaultView.AllowNew = false;
dataTable.DefaultView.AllowEdit = false;
dataTable.DefaultView.AllowDelete = false;
}
else
{
DataColumn colDateTime = dataTable.Columns["DateTime"];
if (colDateTime != null)
{
colDateTime.DefaultValue = date;
}
dataTable.Rows.Clear();
}
}
// заполнение таблицы из файла
stream = ioStream == null ?
new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite) :
ioStream;
reader = new BinaryReader(stream);
Byte[] eventBuf = new byte[EventDataSize]; // буфер данных события
int evNum = 1; // порядковый номер события
while (stream.Position < stream.Length)
{
int readSize = reader.Read(eventBuf, 0, EventDataSize);
if (readSize == EventDataSize)
{
// создание события на основе считанных данных
EventTableLight.Event ev = new EventTableLight.Event();
ev.Number = evNum;
evNum++;
double time = BitConverter.ToDouble(eventBuf, 0);
ev.DateTime = ScadaUtils.CombineDateTime(date, time);
ev.ObjNum = BitConverter.ToUInt16(eventBuf, 8);
ev.KPNum = BitConverter.ToUInt16(eventBuf, 10);
ev.ParamID = BitConverter.ToUInt16(eventBuf, 12);
ev.CnlNum = BitConverter.ToUInt16(eventBuf, 14);
ev.OldCnlVal = BitConverter.ToDouble(eventBuf, 16);
ev.OldCnlStat = eventBuf[24];
ev.NewCnlVal = BitConverter.ToDouble(eventBuf, 25);
ev.NewCnlStat = eventBuf[33];
ev.Checked = eventBuf[34] > 0;
ev.UserID = BitConverter.ToUInt16(eventBuf, 35);
ev.Descr = BytesToStr(eventBuf, 37);
ev.Data = BytesToStr(eventBuf, 138);
// создание строки заполняемой таблицы
if (eventTableLight != null)
{
eventTableLight.AllEvents.Add(ev); // быстрее, чем eventTableLight.AddEvent(ev)
}
else // dataTable != null
{
DataRow row = dataTable.NewRow();
row["Number"] = ev.Number;
row["DateTime"] = ev.DateTime;
row["ObjNum"] = ev.ObjNum;
row["KPNum"] = ev.KPNum;
row["ParamID"] = ev.ParamID;
row["CnlNum"] = ev.CnlNum;
row["OldCnlVal"] = ev.OldCnlVal;
row["OldCnlStat"] = ev.OldCnlStat;
row["NewCnlVal"] = ev.NewCnlVal;
row["NewCnlStat"] = ev.NewCnlStat;
row["Checked"] = ev.Checked;
row["UserID"] = ev.UserID;
row["Descr"] = ev.Descr;
row["Data"] = ev.Data;
dataTable.Rows.Add(row);
}
}
}
}
catch (EndOfStreamException)
{
// нормальная ситуация окончания файла
}
catch
{
fillTime = DateTime.MinValue;
throw;
}
finally
{
if (fileMode)
{
if (reader != null)
{
reader.Close();
}
if (stream != null)
{
stream.Close();
}
}
if (eventTableLight != null)
{
eventTableLight.LastFillTime = fillTime;
}
else if (dataTable != null)
{
dataTable.EndLoadData();
dataTable.AcceptChanges();
dataTable.DefaultView.Sort = "Number";
}
}
}
/// <summary>
/// Заполнить таблицу eventTableLight из файла или потока
/// </summary>
public void Fill(EventTableLight eventTableLight)
{
FillObj(eventTableLight);
}
/// <summary>
/// Populate the dest object from the FileName event file.
/// </summary>
protected void FillObj(object dest)
{
Stream stream = null;
BinaryReader reader = null;
var fillTime = DateTime.Now;
EventTableLight eventTableLight = null;
DataTable dataTable = null;
try {
if (dest is EventTableLight)
{
eventTableLight = dest as EventTableLight;
}
else if (dest is DataTable)
{
dataTable = dest as DataTable;
}
else
{
throw new ScadaException("Destination object is invalid.");
}
// determining the date of events in the table
var date = ExtractDate(tableName);
// storage facility preparation
if (eventTableLight != null)
{
eventTableLight.Clear();
eventTableLight.TableName = tableName;
}
else // dataTable != null
// forming the table structure
{
dataTable.BeginLoadData();
dataTable.DefaultView.Sort = "";
if (dataTable.Columns.Count == 0)
{
dataTable.Columns.Add("Number", typeof(int));
dataTable.Columns.Add("DateTime", typeof(DateTime)).DefaultValue = date;
dataTable.Columns.Add("ObjNum", typeof(int)).DefaultValue = 0;
dataTable.Columns.Add("KPNum", typeof(int)).DefaultValue = 0;
dataTable.Columns.Add("ParamID", typeof(int)).DefaultValue = 0;
dataTable.Columns.Add("CnlNum", typeof(int)).DefaultValue = 0;
dataTable.Columns.Add("OldCnlVal", typeof(double)).DefaultValue = 0.0;
dataTable.Columns.Add("OldCnlStat", typeof(int)).DefaultValue = 0;
dataTable.Columns.Add("NewCnlVal", typeof(double)).DefaultValue = 0.0;
dataTable.Columns.Add("NewCnlStat", typeof(int)).DefaultValue = 0;
dataTable.Columns.Add("Checked", typeof(bool)).DefaultValue = false;
dataTable.Columns.Add("UserID", typeof(int)).DefaultValue = 0;
dataTable.Columns.Add("Descr", typeof(string));
dataTable.Columns.Add("Data", typeof(string));
dataTable.DefaultView.AllowNew = false;
dataTable.DefaultView.AllowEdit = false;
dataTable.DefaultView.AllowDelete = false;
}
else
{
var colDateTime = dataTable.Columns["DateTime"];
if (colDateTime != null)
{
colDateTime.DefaultValue = date;
}
dataTable.Rows.Clear();
}
}
// filling a table from a file
stream = ioStream ?? new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
reader = new BinaryReader(stream);
var eventBuf = new byte[EventDataSize]; // event data buffer
var evNum = 1; // event sequence number
while (stream.Position < stream.Length)
{
int readSize = reader.Read(eventBuf, 0, EventDataSize);
if (readSize == EventDataSize)
{
// create event based on read data
var ev = new EventTableLight.Event {
Number = evNum
};
evNum++;
double time = BitConverter.ToDouble(eventBuf, 0);
ev.DateTime = ScadaUtils.CombineDateTime(date, time);
ev.ObjNum = BitConverter.ToUInt16(eventBuf, 8);
ev.KPNum = BitConverter.ToUInt16(eventBuf, 10);
ev.ParamID = BitConverter.ToUInt16(eventBuf, 12);
ev.CnlNum = BitConverter.ToUInt16(eventBuf, 14);
ev.OldCnlVal = BitConverter.ToDouble(eventBuf, 16);
ev.OldCnlStat = eventBuf[24];
ev.NewCnlVal = BitConverter.ToDouble(eventBuf, 25);
ev.NewCnlStat = eventBuf[33];
ev.Checked = eventBuf[34] > 0;
ev.UserID = BitConverter.ToUInt16(eventBuf, 35);
ev.Descr = BytesToStr(eventBuf, 37);
ev.Data = BytesToStr(eventBuf, 138);
// create row of filled table
if (eventTableLight != null)
{
eventTableLight.AllEvents.Add(ev); // faster than eventTableLight.AddEvent (ev)
}
else // dataTable != null
{
var row = dataTable.NewRow();
row["Number"] = ev.Number;
row["DateTime"] = ev.DateTime;
row["ObjNum"] = ev.ObjNum;
row["KPNum"] = ev.KPNum;
row["ParamID"] = ev.ParamID;
row["CnlNum"] = ev.CnlNum;
row["OldCnlVal"] = ev.OldCnlVal;
row["OldCnlStat"] = ev.OldCnlStat;
row["NewCnlVal"] = ev.NewCnlVal;
row["NewCnlStat"] = ev.NewCnlStat;
row["Checked"] = ev.Checked;
row["UserID"] = ev.UserID;
row["Descr"] = ev.Descr;
row["Data"] = ev.Data;
dataTable.Rows.Add(row);
}
}
}
} catch (EndOfStreamException) {
// normal file end situation
} catch {
fillTime = DateTime.MinValue;
throw;
} finally {
if (fileMode)
{
reader?.Close();
stream?.Close();
}
if (eventTableLight != null)
{
eventTableLight.LastFillTime = fillTime;
}
if (dataTable != null)
{
dataTable.EndLoadData();
dataTable.AcceptChanges();
dataTable.DefaultView.Sort = "Number";
}
}
}
