Decorator Pattern
A Decorator Pattern says that just “attach a flexible additional responsibilities to an object dynamically”. In other words, The Decorator Pattern uses composition instead of inheritance to extend the functionality of an object at runtime. Decorator pattern allows a user to add new functionality to an existing object without altering its structure. This type of design pattern comes under structural pattern as this pattern acts as a wrapper to existing class.This pattern creates a decorator class which wraps the original class and provides additional functionality keeping class methods signature intact.
Example:
Adding logging functionality to specific methods of a web service using the Decorator pattern.
Advantages of the Decorator Design Pattern
- It provides greater flexibility than static inheritance.
- It enhances the extensibility of the object, because changes are made by coding new classes.
- It simplifies the coding by allowing you to develop a series of functionality from targeted classes instead of coding all of the behavior into the object.
Uses of Decorator Design Pattern
- When you want to transparently and dynamically add responsibilities to objects without affecting other objects.
- When you want to add responsibilities to an object that you may want to change in future.
- Extending functionality by sub-classing is no longer practical.
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