Applied Design Patterns with Java

Creational :: Abstract Factory (87) {C ch 5}

Applicability
Use the Abstract Factory pattern when

• a system should be independent of how its products are created, composed, and represented.
• a system should be configured with one of multiple families of products.
• a family of related product objects is designed to be used together, and you need to enforce this constraint.
• you want to provide a class library of products, and you want to reveal just their interfaces, not their implementations.

Structure

Participants
AbstractFactory - declares an interface for operations that create abstract product objects.

ConcreteFactory - implements the operations to create concrete product objects.

AbstractProduct - declares an interface for a type of product object.

ConcreteProduct - defines a product object to be created by the corresponding concrete factory, and implements the AbstractProduct interface.

Client - uses only interfaces declared by AbstractFactory and AbstractProduct classes.

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