Is the factory pattern good?
The Factory Method pattern is useful when you need to abstract the creation of an object away from its actual implementation. Let’s say the factory will be building a “MobileDevice” product type. The logic to create a Product_MobileDevice object has been encapsulated into the class itself.
What’s the point of Factory pattern?
The stated purpose of the Factory Patterns is: Define an interface for creating an object, but let subclasses decide which class to instantiate. Factory Method lets a class defer instantiation to subclasses.
How is factory method used in factory design pattern?
The factory method in CarRent class will return the objects for cars and the factory method in BikeRent class will return objects for bikes. In this example of factory pattern design, the code using the factory method is known as the client code. The client code doesn’t see any difference in the actual products returned by sub-classes.
Are there pros and cons to factory design pattern?
The flexibility and modularity inherent to factory design pattern do not make it an automatic choice for your project. While those very reasons are why factory design pattern is so popular, you should carefully weigh the pros and cons of factory method before you hire dedicated resources for your project. Allows object creation at run time.
Which is the factory method in toysfactory?
In the code above, the function createToy () in the ToysFactory class is called a factory method. Factory Method pattern defines an interface (createToy) for creating an object. But it delegates the actual creation to subclasses (NyToysFactory and CaToyFactory).
When is the best time to use factory method?
Both are meant to address mutually exclusive different kind of object creation problems. Let’s be specific about “factory method”: First thing is that, when you are developing library or APIs which in turn will be used for further application development, then factory method is one of the best selections for creation pattern.