Factory-Method-Pattern | C # implementation of Factory Method Pattern
kandi X-RAY | Factory-Method-Pattern Summary
kandi X-RAY | Factory-Method-Pattern Summary
C# implementation of Factory Method Pattern
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QUESTION
I am confused at the factory-method pattern.
The below code is from "https://www.oodesign.com/factory-method-pattern.html"
...ANSWER
Answered 2020-Sep-10 at 14:18In the Factory Method Pattern, the role of the Client
is to provide a concrete Product
to the abstract Creator
.
This makes most sense when the abstract Creator
lives in a third-party library and each Client
is required to provide a Product
by implementing its own subclass. In this scenario the Client
is implementing an abstraction that it doesn't own.
Factory Method could be useful even when the Client
owns the abstraction, if it needs to create multiple subclasses (i.e. multiple Product
s).
Factory Method does not make sense when the Client
owns the abstraction and there is only one Product
.
QUESTION
What is the point in using this pattern? Considering this article it's just senseless: https://refactoring.guru/design-patterns/factory-method
Why not to use simple inheritance? Here's a little comparison: https://codesandbox.io/s/factory-method-pattern-vs-good-old-inheritance-opovv?file=/src/inheritance.ts
...ANSWER
Answered 2020-Jul-04 at 19:05There is no one versus the other; Factory Method uses polymorphism, via inheritance, to defer object creation to subclasses.
Don't confuse patterns as being greater than their constituents. Patterns are simply names for common use cases of software design, because anything important deserves a name.
QUESTION
I got told that using static methods when implementing the factory-method-pattern is wrong and should be avoided. Because I wasn't really familiar with the pattern I accepted that answer.
After reading articles and getting deeper into it, I couldn't find any source which supports this statement.
Can someone help me out with this situation. Should I avoid the static-keyword in factory-methods and if so, when are they useful?
...ANSWER
Answered 2020-Feb-18 at 09:54An increasingly popular definition of factory method is: a static method of a class that returns an object of that class' type. But unlike a constructor, the actual object it returns might be an instance of a subclass.
source: https://sourcemaking.com/design_patterns/factory_method
As far as I know, Its ok to use static on factory method. But @Serge Ballesta* has a good point in the comment.
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