static void Main(string[] args)
{
FactoryProvider factoryProvider = new FactoryProvider();
IProductFactory productFactoryIndia = factoryProvider.GetProductFactory(FactoryLocation.India);
productFactoryIndia.CreateElectricProducts().GetProductDetails();
productFactoryIndia.CreateElectronicProducts().GetProductDetails();
IProductFactory productFactoryChina = factoryProvider.GetProductFactory(FactoryLocation.China);
productFactoryChina.CreateElectricProducts().GetProductDetails();
productFactoryChina.CreateElectronicProducts().GetProductDetails();
Console.ReadKey();
}
static void Main(string[] args)
{
/*
* Abstract Factory overview
*
* The gang of four describes the abstract factory pattern as providing an interface for creating families
* of related or dependent objects without specifying their concrete classes. So we already talked about what
* factory methods are and how they are factories responsible for creating objects, well you can think of the
* abstract factory pattern as a factory for creating factories, it's like the factory method pattern,
* but everything is encapsulated, it's a higher level of abstraction using interfaces and abstract classes.
* Let's take a look at this class diagram. Let's start on the left hand side with the abstract factory.
* That simply declares an interface for operations that create abstract product objects, and right below
* it is a concrete factory, which implements the operations to create concrete product objects.
* - Now on the right hand side we have our products, abstract product A and abstract product B,
* those declare an interface for a type of product object, and below those are their concrete products,
* which defines a product object to be created by the corresponding concrete factory. On the upper right
* hand side we have our client, and what's important to point out there is that they point to the abstractions,
* the abstract factory and the abstract product A and B. To put this more in real terms let's continue with our
* banking theme. Say we had two credit unions, they can both be considered our factories, each have a savings
* account and a loans account, those can be the products, on the upper left hand side here we see that Icredit
* union factory takes place as the abstract factory. And below it the concrete factories are Citi credit union
* factory and National credit union factory, and below those are the implementations, on the right hand side our
* products are Iloan account and Isavings account, and below them are their concrete implementations of the
* products,
*/
List <string> accntNumbers = new List <string>
{
"CITI-456",
"NATIONAL-123",
"PEGASUS-4231"
};
for (int i = 0; i < accntNumbers.Count; i++)
{
Common.ICreditUnionFactory abstractFac = FactoryProvider.GetCreditUnionFactory(accntNumbers[i]);
if (abstractFac == null)
{
Console.WriteLine("Sorry this credit union w/ account Number"
+ "'{0}' is invalid", accntNumbers[i]);
}
else
{
Common.ILoanAccount loanAccount = abstractFac.CreateLoanAccount();
Common.ISavingsAccount savingsAccount = abstractFac.CreateSavingsAccount();
}
}
Console.ReadLine();
}
