Question

I have a class called Player in the business layer of my web application.

Player class has fields PlayerID, CategoryID and CountryID

A function in Player Class calls a function in PlayerDB Class in the Data Access Layer which in turn calls a stored proc which returns data for PlayerID, CategoryID (foreign key to Category table) and CountryID(foreign key to Country table) from the Player table.

I now have a situation where I want to add Country Name and Country Image (url path) to the above call, returning the new fields from the Country table for each CountryID.

My question is, do I add the country name and country image as additional fields to the Player class or do I have new classes called Country(BLL) and CountryDB(DAL) and a new stored proc?

I want to do what is best practice rather than what may be the easiest way.

If it is relevant I am using ASP.NET, VB.NET and SQL2005.

As you can probably tell I am a newbie so forgive me if I have not used the correct terminology in my question. I hope you get the idea.

Answer 1

You could make a country class, and using object composition, make the country class a property of the player class.

Public Property Country() as BLL.Country ' etc 

Then you’d call the methods like this:

Dim p as BLL.Player a = p.Country.ID b = p.Country.Name c = p.Country.Image d = p.ID e = p.CategoryID