Contents
Are factory classes bad?
Factory classes are useful when you need a complicated process for constructing the object, when the construction need a dependency that you do not want for the actual class, when you need to construct different objects etc.
Why should we use factory pattern?
The Factory Method pattern is generally used in the following situations: A class cannot anticipate the type of objects it needs to create beforehand. A class requires its subclasses to specify the objects it creates. You want to localize the logic to instantiate a complex object.
Which of the following options is a disadvantage of using a static Factory Method instead of constructors while implementing the Factory pattern?
The main disadvantage of providing only static factory methods is that classes without public or protected constructors cannot be subclassed.
What is the advantage of factory constructor?
The factory method is a smart way to create objects in Java and provides several advantages over the traditional approach of creating objects using constructors in Java. It can also improve the quality of code by making the code more readable, less coupled, and improves performance by caching.
What are the advantages of simple factory?
The Advantages of the Simple Factory Pattern
- It provides an elegant way to abstract your code so there’s less visual clutter.
- It allows you to introduce specialized, focused classes with a single purpose (which is great if you follow the SOLID principles)
Why should I use factory class instead of direct object construction?
Case in point, by using “new” and a public constructor, you are coupling the calling code to a specific construction method of a specific concrete class. Your code now has to know that a class MyFooObject exists, and has a constructor that takes a string and an int.
When do you need to use factory methods?
Factory classes are useful when you need a complicated process for constructing the object, when the construction need a dependency that you do not want for the actual class, when you need to construct different objects etc.
When to use separate factory classes in PHP?
One situation where I personally find separate Factory classes to make sense is when the final object you are trying to create relies on several other objects. E.g, in PHP: Suppose you have a House object, which in turn has a Kitchen and a LivingRoom object, and the LivingRoom object has a TV object inside as well.
How to delete pointers returned by factory method in C + +?
Answer: Smart pointer in C++ can be used to delete pointers of object returned by Factory method in C++ in the client code for example in main () method. Smart pointer will handle memory deallocation itself instead of manual call. Recommended to read this post before moving forward: How to write Smart Pointer for a given class in C++?