public ReflectionSequence(IRelationalDatabase database, IDatabaseDialect dialect, Type sequenceType)
{
if (database == null)
{
throw new ArgumentNullException(nameof(database));
}
if (dialect == null)
{
throw new ArgumentNullException(nameof(dialect));
}
if (sequenceType == null)
{
throw new ArgumentNullException(nameof(sequenceType));
}
var typeInfo = sequenceType.GetTypeInfo();
if (!typeInfo.ImplementedInterfaces.Contains(ISequenceType))
{
throw new ArgumentException($"The sequence type { typeInfo.FullName } must implement the { ISequenceType.FullName } interface.", nameof(sequenceType));
}
var ctor = sequenceType.GetDefaultConstructor();
if (ctor == null)
{
throw new ArgumentException($"The sequence type { typeInfo.FullName } does not contain a default constructor.", nameof(sequenceType));
}
var instance = ctor.Invoke(Array.Empty <object>()) as ISequence;
var sequenceName = dialect.GetQualifiedNameOrDefault(database, sequenceType);
var minValue = instance !.MinValue.ToOption();
var maxValue = instance !.MaxValue.ToOption();
// create an inner sequence, which will perform validation
var sequence = new DatabaseSequence(
sequenceName,
instance !.Start,
instance !.Increment,
minValue,
maxValue,
instance !.Cycle,
instance !.Cache
);
Cache = sequence.Cache;
Cycle = sequence.Cycle;
Increment = sequence.Increment;
MaxValue = maxValue;
MinValue = minValue;
Name = sequenceName;
Start = sequence.Start;
}
