Adapter Pattern

1. Introduction

The Adapter Pattern is a structural design pattern that allows objects with incompatible interfaces to work together. It acts as a bridge between two incompatible interfaces, enabling collaboration.

2. Definition

The Adapter Pattern enables the integration of two incompatible interfaces by wrapping an existing class with a new interface. This allows classes to work together that otherwise could not due to incompatible interfaces.

3. Structure

The Adapter Pattern typically consists of the following components:

4. Implementation

Below is a simple implementation of the Adapter Pattern in Python:

class Target:
    def request(self):
        return "Target: The default target's behavior."

class Adaptee:
    def specific_request(self):
        return "Adaptee: The specific behavior."

class Adapter(Target):
    def __init__(self, adaptee):
        self.adaptee = adaptee

    def request(self):
        return f"Adapter: (TRANSLATED) {self.adaptee.specific_request()}"

# Client code
adaptee = Adaptee()
adapter = Adapter(adaptee)

print(adapter.request())  # Output: Adapter: (TRANSLATED) Adaptee: The specific behavior.
            

5. Best Practices

• Use the Adapter Pattern to improve code readability and structure.
• Avoid overusing adapters; only use them when necessary to avoid unnecessary complexity.
• Ensure the adapter is lightweight and only implements methods that are necessary for the client.

6. FAQ