//**** client code that does not need to be changed ***
public static void ShipBook(IBookStore s)
{
//LDAF003
IDistributor d = s.GetDistributor();
d.ShipBook();
}
//LDF002 client code does not need to be changed if the logic for choosing the distributor
// in each BookStore will change
public static void ShipBook(IBookStore s)
{
/*
* The key is your customer should not care which distributor you choose because they will get their books
* regardless. It is completely hidden from the customer's point of view and they should not be concerned
* about it. You, the online bookstore, are the one that determines the distributor to use.
*/
// the book store guy say that he need of a distributor for a specific location, but
// he doesn't know which real distributor will be implemented.
// FACTORY METHOD //the client gets the distributor without having to know which distributor is being used
//LDF003 Notice that this client code don’t need to care which distributor is being created,
//and this is the key to the factory method pattern.
IDistributor d = s.GetDistributor();
// IN a second time the distributor implemented will ship the book.
d.ShipBook();
}
private static void ShipBook(IBookStore bookStore)
{
IDistributor obj = bookStore.GetDistributor();
obj.ShipBook();
}
//**** client code that does not need to be changed ***
private static void ShipBook(IBookStore s)
{
IDistributor d = s.GetDistributor();
d.ShipBook();
}