Abstract Factory Example In Net

Abstract factory design method falls under creational pattern of gang of four gof design patterns in netit is used to create a set of related objects or dependent objects.

Abstract factory example in net. Obtaining the service on demand let us to dispose it with the using construct. Then the factory is used for creating specific sub components. The abstract factory dbproviderfactory declares a set of createxxx methods like createconnection createcommand createparamenter. A classic example used to present the technique is to inject an infrastructure repository to a business class via the constructor.

This factory is also called as factory of factories. This type of design pattern comes under creational pattern as this pattern provides one of the best ways to create an object. Structural code in c. This structural code demonstrates the abstract factory pattern creating parallel hierarchies of objects.

Internally abstract factory use factory design pattern for creating objects. The next move is to declare the abstract factoryan interface with a list of creation methods for all products that are part of the product family for example createchair createsofa and createcoffeetable. We can assume that the notification engine wrap systemnetmailsmtpclient that is disposable. The example here has an implementation of an abstract factory as an interface imobilephone that has methods that can create a smart phone object and a normal phone object.

Through the use of the dbproviderfactory class which is an abstract factory class. Also adonet 20 brings a new set of abstract factory classes to help us to implement a provider independent data access layer. In our example the product classes are cat lion dog octopus and sharp. Object creation has been abstracted and there is no need for hard coded class names in the client code.

The factory method pattern uses inheritance and relies on a subclass to handle the desired object instantiation. The pattern is easy to recognize by methods which return a factory object. The client codes against imobilephone and gets ismartphone and inormalphone interfaces. The abstract factory pattern is pretty common in c code.

It may also use builder design pattern and prototype design pattern for creating objects. Many frameworks and libraries use it to provide a way to extend and customize their standard components. This is a class that implements the abstract factory interface in our case animal to create concrete products. The factory method is just a method it can be overridden in a subclass whereas the abstract factory is an object that has multiple factory methods on it.