public static bool Compute(TaxableEntity te)
{
string archetype = ComputeArchetype(te);
COMPUTATION_CONTEXT ctx = new COMPUTATION_CONTEXT();
TaxDTO td = new TaxDTO {
id = te.id, taxparams = te.taxparams
};
ctx.Put("tax_cargo", td);
return(CommandDispatcher.Dispatch(archetype, ctx));
}
/// <summary>
/// A Rule Engine can do Archetype Detection
/// One can write a small Rule Engine with
/// Interpreters and GOF terms it as
/// Interpreter pattern
/// </summary>
/// <param name="te"></param>
/// <returns></returns>
private static string ComputeArchetype(TaxableEntity te)
{
if ((te.Sex == 'F') && (te.age > 59))
{
return("SeniorCitizenFemale");
}
else if (te.age < 18)
{
return("JuevenileCitizen");
}
return((te.age > 60) ? "SeniorCitizen" : "OrdinaryCitizen");
}