/// <summary>
/// Заполнить объект dest из файла срезов FileName
/// </summary>
protected void FillObj(object dest)
{
Stream stream = null;
BinaryReader reader = null;
DateTime fillTime = DateTime.Now;
SrezTableLight srezTableLight = dest as SrezTableLight;
DataTable dataTable = dest as DataTable;
Trend trend = dest as Trend;
SrezTable srezTable = srezTableLight as SrezTable;
SrezTableLight.Srez lastStoredSrez = null;
try
{
if (srezTableLight == null && dataTable == null && trend == null)
{
throw new ScadaException("Destination object is invalid.");
}
// подготовка объекта для хранения данных
if (srezTableLight != null)
{
srezTableLight.Clear();
srezTableLight.TableName = tableName;
if (srezTable != null)
{
srezTable.BeginLoadData();
}
}
else if (dataTable != null)
{
// формирование структуры таблицы
dataTable.BeginLoadData();
dataTable.DefaultView.Sort = "";
if (dataTable.Columns.Count == 0)
{
dataTable.Columns.Add("DateTime", typeof(DateTime));
dataTable.Columns.Add("CnlNum", typeof(int));
dataTable.Columns.Add("Val", typeof(double));
dataTable.Columns.Add("Stat", typeof(int));
dataTable.DefaultView.AllowNew = false;
dataTable.DefaultView.AllowEdit = false;
dataTable.DefaultView.AllowDelete = false;
}
else
{
dataTable.Rows.Clear();
}
}
else // trend != null
{
trend.Clear();
trend.TableName = tableName;
}
// заполнение объекта данными
stream = ioStream == null ?
new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite) :
ioStream;
reader = new BinaryReader(stream);
DateTime date = ExtractDate(tableName); // определение даты срезов
SrezTable.SrezDescr srezDescr = null; // описание среза
int[] cnlNums = null; // ссылка на номера входных каналов из описания среза
while (stream.Position < stream.Length)
{
// считывание списка номеров каналов и КС
int cnlNumCnt = reader.ReadUInt16();
if (cnlNumCnt > 0)
{
// загрузка номеров каналов в буфер для увеличения скорости работы
int cnlNumSize = cnlNumCnt * 2;
byte[] buf = new byte[cnlNumSize];
int readSize = reader.Read(buf, 0, cnlNumSize);
// создание описания среза и заполнение номеров каналов из буфера
// с проверкой их уникальности и упорядоченности
if (readSize == cnlNumSize)
{
int prevCnlNum = -1;
srezDescr = new SrezTable.SrezDescr(cnlNumCnt);
cnlNums = srezDescr.CnlNums;
for (int i = 0; i < cnlNumCnt; i++)
{
int cnlNum = BitConverter.ToUInt16(buf, i * 2);
if (prevCnlNum >= cnlNum)
{
throw new ScadaException("Table is incorrect.");
}
cnlNums[i] = prevCnlNum = cnlNum;
}
srezDescr.CalcCS();
}
}
else if (srezDescr == null)
{
throw new Exception("Table is incorrect.");
}
// считывание и проверка КС
ushort cs = reader.ReadUInt16();
bool csOk = cnlNumCnt > 0 ? srezDescr.CS == cs : cs == 1;
// считывание данных среза
int cnlCnt = cnlNums.Length; // количество каналов в срезе
int srezDataSize = cnlCnt * 9; // размер данных среза
if (csOk)
{
long srezPos = stream.Position;
double time = reader.ReadDouble();
int hour, min, sec;
ScadaUtils.DecodeTime(time, out hour, out min, out sec);
DateTime srezDT = new DateTime(date.Year, date.Month, date.Day, hour, min, sec);
// инициализация нового среза
SrezTableLight.Srez srez;
if (srezTable != null)
{
srez = new SrezTable.Srez(srezDT, srezDescr)
{
State = DataRowState.Unchanged,
Position = srezPos
};
}
else if (srezTableLight != null)
{
srez = new SrezTableLight.Srez(srezDT, cnlCnt);
cnlNums.CopyTo(srez.CnlNums, 0);
}
else // srezTableLight == null
{
srez = null;
}
// считывание данных входных каналов
int bufInd = 0;
double val;
byte stat;
if (trend != null)
{
// выбор данных требуемого канала для тренда
int index = Array.BinarySearch <int>(cnlNums, trend.CnlNum);
if (index >= 0)
{
stream.Seek(index * 9, SeekOrigin.Current);
byte[] buf = new byte[9];
int readSize = reader.Read(buf, 0, 9);
if (readSize == 9)
{
ExtractCnlData(buf, ref bufInd, out val, out stat);
Trend.Point point = new Trend.Point(srezDT, val, stat);
trend.Points.Add(point);
stream.Seek(srezDataSize - (index + 1) * 9, SeekOrigin.Current);
}
}
else
{
stream.Seek(srezDataSize, SeekOrigin.Current);
}
}
else
{
// загрузка данных среза в буфер для увеличения скорости работы
byte[] buf = new byte[srezDataSize];
int readSize = reader.Read(buf, 0, srezDataSize);
// заполение таблицы срезов из буфера
if (srezTableLight != null)
{
for (int i = 0; i < cnlCnt; i++)
{
ExtractCnlData(buf, ref bufInd, out val, out stat);
srez.CnlNums[i] = cnlNums[i];
srez.CnlData[i].Val = val;
srez.CnlData[i].Stat = stat;
if (bufInd >= readSize)
{
break;
}
}
srezTableLight.AddSrez(srez);
lastStoredSrez = srez;
}
else // dataTable != null
{
for (int i = 0; i < cnlCnt; i++)
{
ExtractCnlData(buf, ref bufInd, out val, out stat);
DataRow row = dataTable.NewRow();
row["DateTime"] = srezDT;
row["CnlNum"] = cnlNums[i];
row["Val"] = val;
row["Stat"] = stat;
dataTable.Rows.Add(row);
if (bufInd >= readSize)
{
break;
}
}
}
}
}
else
{
// пропустить срез, считая его размер так, как при повторяющемся списке номеров каналов
stream.Seek(srezDataSize + 8, SeekOrigin.Current);
}
}
}
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 (srezTableLight != null)
{
srezTableLight.LastFillTime = fillTime;
if (srezTable != null)
{
srezTable.LastStoredSrez = (SrezTable.Srez)lastStoredSrez;
srezTable.EndLoadData();
}
}
else if (dataTable != null)
{
dataTable.EndLoadData();
dataTable.AcceptChanges();
dataTable.DefaultView.Sort = "DateTime, CnlNum";
}
else if (trend != null)
{
trend.LastFillTime = fillTime;
trend.Sort();
}
}
}
/// <summary>
/// Populate the dest object from the FileName slice file
/// </summary>
protected void FillObj(object dest)
{
Stream stream = null;
BinaryReader reader = null;
var fillTime = DateTime.Now;
var srezTableLight = dest as SrezTableLight;
var dataTable = dest as DataTable;
var trend = dest as Trend;
var srezTable = srezTableLight as SrezTable;
SrezTableLight.Srez lastStoredSrez = null;
try {
if (srezTableLight == null && dataTable == null && trend == null)
{
throw new ScadaException("Destination object is invalid.");
}
// storage facility preparation
if (srezTableLight != null)
{
srezTableLight.Clear();
srezTableLight.TableName = tableName;
srezTable?.BeginLoadData();
}
else if (dataTable != null)
{
// forming the table structure
dataTable.BeginLoadData();
dataTable.DefaultView.Sort = "";
if (dataTable.Columns.Count == 0)
{
dataTable.Columns.Add("DateTime", typeof(DateTime));
dataTable.Columns.Add("CnlNum", typeof(int));
dataTable.Columns.Add("Val", typeof(double));
dataTable.Columns.Add("Stat", typeof(int));
dataTable.DefaultView.AllowNew = false;
dataTable.DefaultView.AllowEdit = false;
dataTable.DefaultView.AllowDelete = false;
}
else
{
dataTable.Rows.Clear();
}
}
else // trend != null
{
trend.Clear();
trend.TableName = tableName;
}
// filling the object with data
stream = ioStream ?? new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
reader = new BinaryReader(stream);
var date = ExtractDate(tableName); // slice date determination
SrezTable.SrezDescr srezDescr = null; // cut description
int[] cnlNums = null; // link to input channel numbers from slice description
while (stream.Position < stream.Length)
{
// reading the list of channels and CS numbers
int cnlNumCnt = reader.ReadUInt16();
if (cnlNumCnt > 0)
{
// loading channel numbers to buffer to increase speed
int cnlNumSize = cnlNumCnt * 2;
var buf = new byte[cnlNumSize];
int readSize = reader.Read(buf, 0, cnlNumSize);
// creating a description of the slice and filling the numbers of the channels from the buffer
// with checking their uniqueness and orderliness
if (readSize == cnlNumSize)
{
int prevCnlNum = -1;
srezDescr = new SrezTable.SrezDescr(cnlNumCnt);
cnlNums = srezDescr.CnlNums;
for (var i = 0; i < cnlNumCnt; i++)
{
int cnlNum = BitConverter.ToUInt16(buf, i * 2);
if (prevCnlNum >= cnlNum)
{
throw new ScadaException("Table is incorrect.");
}
cnlNums[i] = prevCnlNum = cnlNum;
}
srezDescr.CalcCS();
}
}
else if (srezDescr == null)
{
throw new Exception("Table is incorrect.");
}
// reading and checking the cops
ushort cs = reader.ReadUInt16();
bool csOk = cnlNumCnt > 0 ? srezDescr.CS == cs : cs == 1;
// read slice data
int cnlCnt = cnlNums.Length; // the number of channels in the slice
int srezDataSize = cnlCnt * 9; // slice data size
if (csOk)
{
long srezPos = stream.Position;
double time = reader.ReadDouble();
var srezDT = ScadaUtils.CombineDateTime(date, time);
// initialize slice
SrezTableLight.Srez srez;
if (srezTable != null)
{
srez = new SrezTable.Srez(srezDT, srezDescr)
{
State = DataRowState.Unchanged,
Position = srezPos
};
}
else if (srezTableLight != null)
{
srez = new SrezTableLight.Srez(srezDT, cnlCnt);
cnlNums.CopyTo(srez.CnlNums, 0);
}
else // srezTableLight == null
{
srez = null;
}
// read input data
var bufInd = 0;
double val;
byte stat;
if (trend != null)
{
// select channel data for trend
int index = Array.BinarySearch <int>(cnlNums, trend.CnlNum);
if (index >= 0)
{
stream.Seek(index * 9, SeekOrigin.Current);
var buf = new byte[9];
int readSize = reader.Read(buf, 0, 9);
if (readSize == 9)
{
ExtractCnlData(buf, ref bufInd, out val, out stat);
var point = new Trend.Point(srezDT, val, stat);
trend.Points.Add(point);
stream.Seek(srezDataSize - (index + 1) * 9, SeekOrigin.Current);
}
}
else
{
stream.Seek(srezDataSize, SeekOrigin.Current);
}
}
else
{
// loading slice data to buffer to increase speed
var buf = new byte[srezDataSize];
int readSize = reader.Read(buf, 0, srezDataSize);
// filling the buffer table
if (srezTableLight != null)
{
for (var i = 0; i < cnlCnt; i++)
{
ExtractCnlData(buf, ref bufInd, out val, out stat);
srez.CnlNums[i] = cnlNums[i];
srez.CnlData[i].Val = val;
srez.CnlData[i].Stat = stat;
if (bufInd >= readSize)
{
break;
}
}
srezTableLight.AddSrez(srez);
lastStoredSrez = srez;
}
else // dataTable != null
{
for (var i = 0; i < cnlCnt; i++)
{
ExtractCnlData(buf, ref bufInd, out val, out stat);
var row = dataTable.NewRow();
row["DateTime"] = srezDT;
row["CnlNum"] = cnlNums[i];
row["Val"] = val;
row["Stat"] = stat;
dataTable.Rows.Add(row);
if (bufInd >= readSize)
{
break;
}
}
}
}
}
else
{
// skip the slice, considering its size as in the case of a repeated list of channel numbers
stream.Seek(srezDataSize + 8, SeekOrigin.Current);
}
}
} catch (EndOfStreamException) {
// normal file end situation
} catch {
fillTime = DateTime.MinValue;
throw;
} finally {
if (fileMode)
{
reader?.Close();
stream?.Close();
}
if (srezTableLight != null)
{
srezTableLight.LastFillTime = fillTime;
if (srezTable != null)
{
srezTable.LastStoredSrez = (SrezTable.Srez)lastStoredSrez;
srezTable.EndLoadData();
}
}
if (dataTable != null)
{
dataTable.EndLoadData();
dataTable.AcceptChanges();
dataTable.DefaultView.Sort = "DateTime, CnlNum";
}
if (trend != null)
{
trend.LastFillTime = fillTime;
trend.Sort();
}
}
}