Redesing applying the Decorator pattern

[gsus25]

Proposal: The Decorator pattern would be advantageous when implementing a payment processing system that requires adding additional functionalities, such as discounts, taxes, or specific validations, without altering the original structure of the payment process.

Consequences: By employing the Decorator pattern, a more flexible and modular design is achieved, allowing the incremental incorporation of new functionalities. This reduces the risk of introducing errors when adding new features, as modifications are confined to specific decorator classes. However, it is crucial to manage the decorator hierarchy effectively to avoid excessive complexities. The gained flexibility may lead to increased complexity if not handled carefully, but overall, the Decorator pattern offers an elegant solution for efficiently extending functionality.

Solution in UML: