public SupperShortIdGenerator(IdBase radix, DateTime baseDate)
{
if (baseDate < _baseDate)
{
throw new ArgumentOutOfRangeException("baseDate", "The base date should be later than 1/1/2016");
}
_radix = radix;
_baseDate = baseDate;
}
public virtual async Task Update(IdBase o)
{
var existing = await Entries.FirstOrDefaultAsync(x => x.Id == o.Id) ?? throw new BadRequestException("Record not found");
var updated = o.ConvertTo <T>();
Context.Entry(existing).CurrentValues.SetValues(updated);
await Context.SaveChangesAsync();
}
/// <summary>
/// Convert a number to another base system
/// </summary>
public static string Convert(UInt64 number, IdBase radix)
{
switch (radix)
{
case IdBase.Hexadecimal:
return number.ToString("X");
case IdBase.Hexatrigesimal:
return Convert(number, Characters.Hexatrigesimal);
case IdBase.Sexagesimal:
return Convert(number, Characters.Sexagesimal);
case IdBase.Duosexagesimal:
return Convert(number, Characters.Duosexagesimal);
case IdBase.WebId:
return Convert(number, Characters.ShortIdTable);
}
throw new Exception("Not handle " + radix);
}
public static string NewId(IDictionary<ulong, IList<long>> cache, ulong current, IdBase radix)
{
// If all keys are precedent values, we should remove them from the dictionary
// Otherwise cache contains current in the keys.
// To ignore duplicated ID(s), we try to increase values in the list on each generation.
if (cache.Count == 0)
{
cache.Add(current, new List<long>());
}
else if (cache.Keys.Max() < current)
{
cache.Clear();
cache.Add(current, new List<long>());
}
else
{
// OK, do nothing
}
string secondPart;
if (cache[current].Any())
{
var maxValue = cache[current].Max();
cache[current].Add(maxValue + 1);
secondPart = maxValue.ToString(CultureInfo.InvariantCulture);
}
else
{
cache[current].Add(0);
secondPart = string.Empty;
}
var nextValueFormatted = string.Format("{0}{1}", current, secondPart);
return NumberToString.Convert(UInt64.Parse(nextValueFormatted), radix);
}
public static IdDto ToIdDto(this IdBase id)
{
return(new IdDto(id.Id));
}
internal static IdDto ToIdDto(this IdBase id)
{
return(new IdDto(id.Id));
}
public SupperShortIdGenerator(IdBase radix)
: this(radix, new DateTime(2016, 1, 1))
{
}
