Real-World Analogy of Strategy Design Pattern
Imagine you’re planning a trip to a new city, and you have several options for getting there: by car, by train, or by plane. Each mode of transportation offers its own set of advantages and disadvantages, depending on factors such as cost, travel time, and convenience.
- Context: You, as the traveler, represent the context in this analogy. You have a specific goal (reaching the new city) and need to choose the best transportation strategy to achieve it.
- Strategies: The different modes of transportation (car, train, plane) represent the strategies in this analogy. Each strategy (mode of transportation) offers a different approach to reaching your destination.
- Interface:
- The interface in this analogy is the set of common criteria you consider when choosing a transportation mode, such as cost, travel time, and convenience.
- These criteria serve as the common interface that all strategies must adhere to.
- Flexibility:
- Just as the Strategy Design Pattern allows you to dynamically switch between different algorithms at runtime, you have the flexibility to choose a transportation mode based on your specific requirements and constraints.
- For example, if you value speed and are willing to pay more, you might choose to fly.
- If you prioritize cost-effectiveness and don’t mind a longer travel time, you might opt for a train or car.
- Dynamic Selection:
- The Strategy Design Pattern allows you to dynamically select the best strategy (transportation mode) based on changing circumstances.
- For instance, if your initial flight is canceled due to bad weather, you can quickly switch to an alternative mode of transportation, such as taking a train or renting a car, without having to change your overall travel plans drastically.
Strategy Design Pattern
The Strategy Design Pattern defines a family of algorithms, encapsulates each one, and makes them interchangeable, allowing clients to switch algorithms dynamically without altering the code structure.
Important Topics for the Strategy Design Pattern
- What is the Strategy Design Pattern?
- Characteristics of the Strategy Design Pattern?
- Components of the Strategy Design Pattern
- Communication between the Components
- Real-World Analogy of Strategy Design Pattern
- Strategy Design Pattern Example
- When to use the Strategy Design Pattern?
- When not to use the Strategy Design Pattern?
- Advantages of the Strategy Design Pattern
- Disadvantages of the Strategy Design Pattern