The Mediator pattern is a behavioral design pattern that promotes loose coupling by preventing objects from referring to each other explicitly. Instead, they communicate through a mediator object. This pattern centralizes complex communication logic among objects, making the system more maintainable and flexible.
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The Mediator pattern is particularly useful in scenarios where:
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Multiple objects communicate with each other, leading to a complex network of interactions.
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You want to centralize control logic that affects multiple objects.
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Reducing the dependencies between objects is necessary to enhance modularity and maintainability.
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Mediator Interface: Defines methods for communication between colleague objects.
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Concrete Mediator: Implements the Mediator interface and coordinates communication between colleague objects.
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Colleague Objects: Objects that communicate with each other through the mediator.
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Decoupling: Reduces the dependencies between communicating objects, making the system easier to maintain and extend.
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Centralized Control: Centralizes complex communication logic in a single place, simplifying the behavior of the colleague objects.
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Enhanced Readability: Improves code readability by reducing the clutter of inter-object communication.