Software Design Patterns Questions Medium
The purpose of the Mediator design pattern is to promote loose coupling between objects by encapsulating their communication logic. It allows objects to communicate with each other indirectly through a mediator object, rather than directly referencing and interacting with each other.
The Mediator pattern is implemented by introducing a mediator class that acts as a central hub for communication between objects. Each object that needs to communicate with other objects registers itself with the mediator. When an object wants to communicate with another object, it sends a message to the mediator, which then relays the message to the appropriate recipient object.
The mediator class is responsible for managing the communication between objects, handling the routing of messages, and maintaining the relationships between objects. It decouples the objects from each other, as they only need to know about the mediator and not about the other objects they communicate with.
By using the Mediator pattern, the complexity of the communication between objects is reduced, as they only need to interact with the mediator. This promotes better maintainability and extensibility of the system, as changes in the communication logic can be easily implemented in the mediator class without affecting the individual objects.
Overall, the Mediator design pattern helps to simplify the communication between objects, promotes loose coupling, and enhances the flexibility and maintainability of the software system.