Real World Use Cases
Here are a few real-world scenarios where you might find the Template Method pattern useful:
Data Parsing and Processing
This diagram represents the class hierarchy for the "Data Parsing and
DataParser is an abstract class that provides
parseData method as well as default implementations
useData methods. The
parse method is
declared as protected and abstract, indicating that it needs to be overridden by
CSVParser are concrete classes that
DataParser. Each of these classes provides its own implementation of
parse method, as per the requirements of the specific data format.
Frameworks and Libraries
Here's a class diagram representing the "Frameworks and Libraries":
In this diagram,
RequestHandler is an abstract class that encapsulates the
overall flow of handling a request (pre-processing, handling, and
handleRequest method is public and implements this
overall flow, while
postProcess methods provide default
implementations for pre-processing and post-processing steps. The
method is declared as protected and abstract, which means it needs to be
overridden by each subclass.
AdminRequestHandler are concrete classes that
RequestHandler. Each of these classes provides its own implementation
handle method, tailored to the specific type of request it deals with (
user request or admin request).
In this diagram,
GameEntity is an abstract class that encapsulates the overall
lifecycle of a game entity (appear, move, attack, and destroy). The
method is public and implements this overall flow, while
methods provide default implementations for the appearance and destruction of
the game entities. The
specificAttack methods are
declared as protected and abstract, which means they need to be overridden by
AlienEntity are concrete classes that extend
Each of these classes provides its own implementation of the
specificAttack methods, reflecting their unique behaviors in the game.
In a gaming scenario, suppose you have different kinds of enemies that all have a similar lifecycle: they appear on the screen, move around, attack the player, and finally get destroyed. However, each type of enemy might do these things in a slightly different way. The Template Method pattern would allow you to define the overall lifecycle in a superclass, with subclasses providing their own implementations for each step.
The main benefit of the Template Method pattern in all these scenarios is that it allows you to encapsulate the parts of the process that are the same, while providing flexibility to handle the parts that are different. This makes your code more reusable, easier to manage, and easier to understand.
Level Up Your TypeScript And Object Oriented Programming Skills. The only complete TypeScript course on the marketplace you building TypeScript apps like a PRO.SEE COURSE DETAILS
What Can You Do Next 🙏😊
If you liked the article, consider subscribing to Cloudaffle, my YouTube Channel, where I keep posting in-depth tutorials and all edutainment stuff for software developers.