adapter design pattern

What is a design pattern?
Design patterns provide a reliable and easy way to follow proven design principles and to write well-structured and maintainable code. One of the popular and often used patterns in object-oriented software development is the adapter pattern.
How to implement a provider adapter pattern?
When implementing the adapter pattern, for clarity, one can apply the class name [ClassName]To[Interface]Adapter to the provider implementation; for example, DAOToProviderAdapter. It should have a constructor method with an adaptee class variable as a parameter.
What is adapter design pattern?
The adapter design pattern describes how to solve such problems: Define a separate adapter class that converts the (incompatible) interface of a class ( adaptee) into another interface ( target) clients require. Work through an adapter to work with (reuse) classes that do not have the required interface.
How does an adapter work?
Here’s how it works: The adapter gets an interface, compatible with one of the existing objects. Using this interface, the existing object can safely call the adapter’s methods. Upon receiving a call, the adapter passes the request to the second object, but in a format and order that the second object expects.

Components of Adapter Design Pattern

1. Target Interface 1. Description:Defines the interface expected by the client. It represents the set of operations that the client code can use. 2. Role:It’s the common interface that the client code interacts with. 2. Adaptee 1. Description:The existing class or system with an incompatible interface that needs to be integrated into the new system. 2. Role:It’s the class or system that the client code cannot directly use due to interface mismatches. 3. Adapter 1. Description:A class that implements the target interface and internally uses an instance of the adaptee to make it compatible with the target interface. 2. Role:It acts as a bridge, adapting the interface of the adaptee to match the target interface. geeksforgeeks.org

Adapter Design Pattern Example

1. Target Interface The interface that the client code expects. 2. Adaptee The existing class with an incompatible interface. 3. Adapter The class that adapts the LegacyPrinterto the Printerinterface. geeksforgeeks.org

How Adapter Design Pattern Works?

Client Request:Adapter Translation:Adaptee Execution:Result to Client: geeksforgeeks.org

Why Do We Need Adapter Design Pattern?

Integration of Existing Code:Reuse of Existing Functionality:Interoperability:Client-Server Communication: geeksforgeeks.org

When Not to Use Adapter Design Pattern?

When Interfaces Are Stable:When Direct Modification Is Feasible:When Performance is Critical:When Multiple Adapters Are Required: geeksforgeeks.org

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