public static GetNextNumberResponse GetNextNumber(IDbConnection connection, GetNextNumberRequest request,
Field field)
{
var prefix = request.Prefix ?? "";
var max = connection.Query <string>(new SqlQuery()
.From(field.Fields)
.Select(Sql.Max(field.Expression))
.Where(
field.StartsWith(prefix) &&
field >= prefix.PadRight(request.Length, '0') &&
field <= prefix.PadRight(request.Length, '9')))
.FirstOrDefault();
var response = new GetNextNumberResponse();
long l;
response.Number = max == null ||
!long.TryParse(max.Substring(prefix.Length), out l) ? 1 : l + 1;
response.Serial = prefix + response.Number.ToString()
.PadLeft(request.Length - prefix.Length, '0');
return(response);
}
private GetNextNumberResponse GetFromTableStorageDirectly(string key)
{
var response = new GetNextNumberResponse
{
ForKey = key,
};
response.NextSequenceNumber = TableStorageNumberStore.GetNextSequenceNumber(key);
return(response);
}
