What are the components of the web abstract factory pattern

This article mainly introduces the relevant knowledge of "which parts of the web abstract factory pattern". The editor shows you the operation process through the actual case, the operation method is simple and fast, and the practicality is strong. I hope that this article "which parts of the web abstract factory pattern consists of" can help you solve the problem.

structure

The following figure shows the class diagram of the abstract factory pattern.

The only difference between this class diagram and the previous one is that it uses a more abstract class name. So I'm not going to repeat it.

Here is another topic: drawing class diagrams. The class diagram of the abstract factory pattern can be drawn as follows (not absolutely, of course):

First of all, you can draw three factory classes.

Add a series of actions / methods to produce products for each factory class.

Draw the inheritance structure of even products.

Add a customer class.

Add dependencies.

The author has a view that when the first step is completed, it can be said to be an abstract factory pattern. Because according to the idea of the abstract factory pattern, the rest is almost inevitable.

Participant

A b s t r a c t F a c t o r y (Wi d g e t F a c t o r y)

-declares an operation interface for creating abstract product objects.

C o n c r e t e F a c t o r y (M o t i f Wi d g e t F a c t o r YBEI P M Wi d g e t F a c t o r y)

-implement the operation of creating specific product objects.

A b s t r a c t P r o d u c t (Window S c r o l l B a r)

-declare an interface for a class of product objects.

C o n c r e t e P r o d u c t (M o t i f Window,M o t i f S c r o l l B a r)

-defines a product object that will be created by the corresponding specific factory.

-implement the A b s t r a c t P r o d u c t interface.

C l i e n t

-use only the interfaces declared by the A b s t r a c t F a c t o r y and A b s t r a c t P r o d u c t classes.

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