Factory Method Pattern
In object-oriented programming, the Factory Method is a Creational Design Pattern that allows us to create objects without specifying the exact class that will be instantiated. Instead of creating objects directly, we use a factory method to create and return them.
This Design Pattern promotes code reuse and loose coupling between classes making our code more modular and easier to maintain. It enables us to create objects without knowing the implementation details of our classes.
Example: Creating different types of payment gateways in an e-commerce application using the Factory pattern.
The Factory Method pattern consists of four main components:
- Product
- Concrete Product
- Creator
- Concrete Creator
The Product is the interface or abstract class that defines the methods that the ConcreteProduct must implement. The ConcreteProduct is the class that implements the Product interface. The Creator is the abstract class that declares the Factory Method. The ConcreteCreator is the class that implements the Factory Method and returns the ConcreteProduct.
Advantages of the Factory Method Design Pattern
- Loose coupling: The Factory Method Design Pattern promotes loose coupling between classes. The Creator class doesn’t need to know the exact class that will be instantiated. This makes the code more modular and easier to maintain.
- Encapsulation: The Factory Method Design Pattern encapsulates the object creation process. This makes it easier to modify the creation process without affecting the rest of the code.
- Code reuse: The Factory Method Design Pattern promotes code reuse by allowing multiple classes to share a common interface.
- Extensibility: The Factory Method Design Pattern is extensible. It allows new ConcreteProduct classes to be added without modifying the existing code.
The Factory Method pattern is useful when
- We don’t know the exact class of object that will be created at runtime.
- We want to encapsulate the object creation process.
- We want to promote loose coupling between classes.
- We want to promote code reuse.
Latest Design Patterns for Web Development
Design patterns are typical solutions to common problems in software design. Rather than being a code solution, they are general concepts you can implement in your software to expect certain behavior from it. Design patterns are not specific to any programming language or technology, but they can be implemented in different ways depending on the specific technology being used.
Design patterns are used in web development to create applications that are maintainable, efficient, and scalable. They provide a way to structure code and data in a way that is both easy to understand and maintain.
Important Topics for the Latest Design Patterns for Web Development
- Types of Design Patterns
- 1. Model View Controller(MVC)
- 2. Model View Presenter(MVP)
- 3. Model View ViewModel(MVVM)
- 4. Singleton Pattern
- 5. Factory Method Pattern
- 6. Decorator Pattern
- 7. Observer Pattern
- 8. Adapter Pattern
- 9. Dependency Injection Pattern
- 10. Repository Pattern
- 11. Strategy Pattern
- 12. Command Pattern
- 13. Middleware Pattern
- 13. Caching Patterns
- 14. Front Controller Pattern