Application of the Factory Method design pattern to solve the creation of objects related to the order flow.

[Darwin4050E]

Problem description:

Currently, the creation of objects such as events is distributed directly in the PizzaKitchen code, which increases coupling and makes it difficult to extend for new types of events or pizzas. This violates the single responsibility principle, since PizzaKitchen performs both business logic and object construction.

Proposed Solution:

• Implement the Factory Method pattern to encapsulate the creation of events.
• Create a factory to generate Event instances based on the current state of the order.
• Modify PizzaKitchen to delegate the creation of these objects to the respective factories.

Consequences or implications of the redesign:

Advantages:

• Decoupling of object creation and business logic.
• Easier to add new types of events.
• Better maintenance and adherence to the single responsibility principle.

Impacts:

• Minimal changes to current code; new classes are added without significantly affecting existing logic.

Resources:

UML Diagram: