public TraceId(DateTime timestamp, TransmissionKind transmissionKind, SequenceNumber sequence, CheckNumber checkNumber)
{
Timestamp = timestamp;
Kind = transmissionKind;
Sequence = sequence;
CheckNumber = checkNumber;
}
public TraceId(string value)
{
// UNDOCUMENTED: while POS API spec, Page 23 designates TraceID as
// A25, examples show it as A19. Possibly for Oracle to change
// TraceID in the future without updating the schema.
FieldTypes.AssertA25(value);
// Date part of TraceID doesn't follow the pattern used with
// LocalDate and BusinessDate. For TraceID, year is two characters
// only. Since TraceID is an element on its own and not a field type
// (Ax, Nx, ...), its regular expression is defined inline and not
// with FieldTypes.
const string pattern = @"^(?<year>\d{2})(?<month>\d{2})(?<day>\d{2})(?<hour>\d{2})(?<minute>\d{2})(?<second>\d{2})(?<retransmit>.{1})(?<sequence>\d{2})(?<checkNumber>\d{4})$";
var re = new Regex(pattern);
var m = re.Match(value);
if (!m.Success)
{
throw new ArgumentException($"{nameof(value)} must match pattern: {pattern}. Was '{value}'");
}
var date = FieldTypes.AssertDate($"20{m.Groups["year"].Value}{m.Groups["month"].Value}{m.Groups["day"].Value}");
var time = FieldTypes.AssertTime($"{m.Groups["hour"].Value}{m.Groups["minute"].Value}{m.Groups["second"].Value}");
Timestamp = date.Add(time);
var retransmit = m.Groups["retransmit"].Value;
if (!(retransmit == "N" || retransmit == "R"))
{
throw new ArgumentException($"Retransmit must be either 'N' or 'R'. Was '{retransmit}'");
}
Kind = retransmit == "N" ? TransmissionKind.Normal : TransmissionKind.Retransmit;
var sequence = int.Parse(m.Groups["sequence"].Value);
Sequence = new SequenceNumber(sequence);
var checkNumber = int.Parse(m.Groups["checkNumber"].Value);
CheckNumber = new CheckNumber(checkNumber);
}
