roshnikutty / designsystem

BabyDom project

The main method is housed in the BabyDomApp class. This has various tests to run the design pattern outputs.

This solution uses the following design patterns

Creational Pattern

1. Singleton pattern is used in these classes -

• Warehouse (package: Warehouse)
• Cart (package: Cart)
• InvoiceHistory (package: Invoice)

2. Builder pattern is used in

• the webpage creation of Product & Bundle pages (package: Page)
• Invoice (package: Invoice)

Structural Pattern

1. Decorator pattern

• Used to add Discount coupons (package: Discount)

2. Composite pattern

• Bundle descriptions are composed of Product description (package: Product)

Behavioral Pattern

1. State pattern

• User logged in or out (package: User)

2. Observer pattern

• warehouse notify subscribers (package: Warehouse)