Shulou(Shulou.com)06/03 Report--

In this issue, the editor will bring you about the advantages of the abstract factory model. The article is rich in content and analyzes and narrates it from a professional point of view. I hope you can get something after reading this article.

The advantages of Abstract Factory pattern are: 1, Abstract Factory pattern isolates the production of concrete classes, so that customers do not need to know what is created; 2, when multiple objects in a product family are designed to work together, it ensures that the client always uses only objects in the same product family.

Advantages:

1. The abstract factory pattern isolates the production of concrete classes, so that customers do not need to know what is created.

2. When multiple objects in a product family are designed to work together, it ensures that the client always uses only objects in the same product family.

3. It is convenient to add new specific factories and product families, and there is no need to modify the existing system, which is in line with the "opening and closing principle".

Applicable scenario

You can use the abstract factory pattern when the object you need to create is a series of interrelated or interdependent product families. To put it more clearly, in an inheritance system, if there are multiple hierarchical structures (that is, there are multiple abstract classes), and there are certain associations or constraints among the implementation classes belonging to each hierarchical structure, you can use the abstract factory pattern. If there are no associations or constraints between the implementation classes in each hierarchy, it is more appropriate to use multiple separate factories to create the product.

Summary

Whether it is a simple factory pattern, a factory method pattern, or an abstract factory pattern, they all belong to the factory pattern and are very similar in form and characteristics, and their ultimate goal is decoupling. When using this pattern, we don't have to care about whether the factory method pattern or the abstract factory pattern, because the evolution between them is often elusive. Often you will find that the factory method pattern clearly used, when a new requirement comes and is slightly modified and a new method is added, it becomes an abstract factory pattern because the products in the class constitute product families in different hierarchical structures; for abstract factory patterns, when a method is reduced so that the supplied products no longer constitute a product family, it evolves into a factory method pattern.

Therefore, when using the factory mode, you only need to care about whether the goal of reducing coupling has been achieved.

These are the advantages of the abstract factory model shared by the editor. If you happen to have similar doubts, you might as well refer to the above analysis to understand. If you want to know more about it, you are welcome to follow the industry information channel.

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