/// <summary>Gets the cast needed for casting to the database type.</summary>
/// <exception cref="InvalidCastException">
/// If the required cast is not defined.
/// </exception>
private static MethodInfo GetCast(Type sourceType, SingleValueObjectAttribute attr)
{
if (!Casts.TryGetValue(sourceType, out MethodInfo cast))
{
var returnType = attr.DatabaseType ?? attr.UnderlyingType;
var methods = sourceType.GetMethods(BindingFlags.Public | BindingFlags.Static)
.Where(m =>
m.IsHideBySig &&
m.IsSpecialName &&
m.GetParameters().Length == 1 &&
m.ReturnType == returnType)
.ToList();
if (methods.Any())
{
cast = methods[0];
Casts[sourceType] = cast;
}
else
{
throw new InvalidCastException(string.Format(QowaivMessages.InvalidCastException_FromTo, sourceType, returnType));
}
}
return(cast);
}
