Factory method for each hierarchy

Question

I'm working on an application with many inheritance hierarchies that are not directly related.

Do I have to assign a factory method for each hierarchy in the client code to select a certain class from each hierarchy to instantiate upon the user selection through the GUI?

score 2 · Answer 1 · edited May 23 '17 at 12:27

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Instead if a concret Factory you may take a look at the Abstract Factory

Abstract Factory offers the interface for creating a family of related objects, without explicitly specifying their classes.

Reference

If objects are not related, I think you can't avoid having a factory for each object. Take a look at the Dependency Injection architecture , it could be an interesting option Dependency Injection vs Factory Pattern

edited May 23 '17 at 12:27

Community

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answered Sep 02 '12 at 17:52

Momo

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thanks for your answer, but the point is the required classes aren't family, they are not related, so abstract factory isn't valid here – Hussein Sep 02 '12 at 18:23
What do you mean when you say "inheritance hierarchies that are not directly related?" – Usman Mutawakil Sep 02 '12 at 20:04

score 0 · Answer 2 · answered Sep 02 '12 at 20:18

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Have a look at this webpage, which demonstrates using the Abstract Factory pattern with multiple inheritance hierarchies: http://www.dofactory.com/Patterns/PatternAbstract.aspx.

answered Sep 02 '12 at 20:18

w0051977

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Factory method for each hierarchy

2 Answers2