public void AddRow(CtpObject[] values)
{
CtpObject[] item = new CtpObject[values.Length];
for (int x = 0; x < values.Length; x++)
{
item[x] = values[x];
}
Rows.Add(item);
}
private SttpDataPointMetadata Lookup(CtpObject dataPointID)
{
if (m_metadataLookup.TryGetValue(dataPointID, out var value))
{
return(value);
}
var dp = new SttpDataPointMetadata(null);
dp.DataPointID = dataPointID;
return(dp);
}
public void ProcessCommand(CommandGetMetadata command, CtpNetStream encoder)
{
var repository = m_repository;
if (repository.ContainsTable(command.Table))
{
var table = repository[command.Table];
var columns = new List <MetadataColumn>();
var columnIndexes = new List <int>();
if (command.Columns == null || command.Columns.Count == 0)
{
columns.AddRange(table.Columns);
for (int x = 0; x < columns.Count; x++)
{
columnIndexes.Add(x);
}
}
else
{
foreach (var column in command.Columns)
{
var c = table.Columns.FindIndex(x => x.Name == column);
if (c < 0)
{
encoder.Send(new CommandMetadataRequestFailed("Syntax Error", "Could not find the specified column " + column));
return;
}
columnIndexes.Add(c);
columns.Add(table.Columns[c]);
}
}
byte channelID = 1;
int rowCount = 0;
var rowEncoder = new MetadataRowEncoder(columns);
CtpObject[] values = new CtpObject[columns.Count];
encoder.Send(new CommandBeginMetadataResponse(channelID, Guid.Empty, repository.RuntimeID, repository.VersionNumber, command.Table, columns));
foreach (var row in table.Rows)
{
for (int x = 0; x < values.Length; x++)
{
values[x] = row.Fields[columnIndexes[x]];
}
rowEncoder.AddRow(values);
if (rowEncoder.Size > 30000)
{
throw new NotImplementedException();
//encoder.SendRaw(rowEncoder.ToArray(), channelID);
rowEncoder.Clear();
}
rowCount++;
}
if (rowEncoder.Size > 0)
{
throw new NotImplementedException();
//encoder.SendRaw(rowEncoder.ToArray(), channelID);
rowEncoder.Clear();
}
encoder.Send(new CommandEndMetadataResponse(channelID, rowCount));
}
else
{
encoder.Send(new CommandMetadataRequestFailed("Syntax Error", "Could not find the specified table " + command.Table));
}
}
public SttpDataPointID(CtpObject id)
{
ID = id;
m_hashCode = ID.GetHashCode();
}
public AttributeValues(string name, CtpObject value)
{
Name = name;
Value = value;
}
public override bool Read(SttpDataPoint dataPoint)
{
TryAgain:
if (m_stream.IsEmpty)
{
return(false);
}
m_lastChannelID++;
CtpObject value = m_stream.Read();
if (value.ValueTypeCode == CtpTypeCode.Integer)
{
long code = value.IsInteger;
if (0 <= code && code <= 15)
{
bool channelIDChanged = (code & 1) != 0;
bool hasMetadata = (code & 2) != 0;
bool qualityChanged = (code & 4) != 0;
bool timeChanged = (code & 8) != 0;
if (channelIDChanged)
{
m_lastChannelID = m_stream.Read().AsInt32;
}
if (hasMetadata)
{
Assign(new SttpDataPointID(m_stream.Read()), m_lastChannelID);
}
if (qualityChanged)
{
m_lastQuality = m_stream.Read().AsInt64;
}
if (timeChanged)
{
m_lastTimestamp = m_stream.Read().AsCtpTime;
}
value = m_stream.Read();
}
else
{
value = code - 16;
}
}
dataPoint.DataPoint = GetMetadata(m_lastChannelID);
dataPoint.Quality = m_lastQuality;
dataPoint.Time = m_lastTimestamp;
dataPoint.Value = value;
if (dataPoint.DataPoint == null)
{
goto TryAgain;
}
return(true);
}
/// <summary>
/// This method will extract all literals and assign them a new variable name.
/// </summary>
private string ExtractLiterals(string expression)
{
int param = 1;
StringBuilder sb = new StringBuilder();
StringBuilder sbLiteral = new StringBuilder();
bool isLiteral = false;
for (var x = 0; x < expression.Length; x++)
{
char c = expression[x];
char peek = ' ';
if (x + 1 < expression.Length)
{
peek = expression[x + 1];
}
if (c == '#')
{
isLiteral = !isLiteral;
if (!isLiteral)
{
//Only on closing, if the next char is a # is this an escape character.
if (peek == '#')
{
sbLiteral.Append('#');
}
else
{
CtpObject value = ParseLiteral(ToTrimString(sbLiteral));
while (Literals.ContainsKey($"{{{param}}}"))
{
param++;
}
Literals.Add($"{{{param}}}", value);
sbLiteral.Clear();
sb.Append($"{{{param}}}");
}
}
}
else if (isLiteral)
{
sbLiteral.Append(c);
}
else
{
switch (c)
{
default:
sb.Append(c);
break;
}
}
}
if (isLiteral)
{
throw new Exception("Literal Mismatch");
}
if (sb.Length == 0)
{
return(string.Empty);
}
return(sb.ToString());
}
