Bridge Pattern UML Diagram Concepts
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Questions and Answers

What is the purpose of using the bridge pattern in software development?

  • To avoid aggregation between the client and the Implementor interface
  • To invoke existing code with a specific version without changing the calling code (correct)
  • To create new abstractions without implementing the Implementor interface
  • To directly call methods in the Implementation interface from the client
  • In the context of the bridge pattern, how does the client interact?

  • Via the abstraction, which may have similar methods as the Implementor interface (correct)
  • By bypassing the Implementor interface altogether
  • By creating a new Implementor for each client
  • Directly with the Implementation methods
  • What happens when methods are called in the Bridge in the context of the bridge pattern?

  • The call is delegated to the Implementation plugged into the Bridge (correct)
  • The Bridge executes the methods internally
  • The call is sent to all Implementors simultaneously
  • The call is made directly to the client's code
  • How does the Bridge relate to the Implementation interface in the bridge pattern?

    <p>The Bridge aggregates the Implementation interface</p> Signup and view all the answers

    What flexibility does adding additional methods on a client's view provide in the context of the bridge pattern?

    <p>The ability to enhance client functionality without changing existing code</p> Signup and view all the answers

    What is the main goal of the adapter pattern?

    <p>To provide a new interface to an existing class</p> Signup and view all the answers

    In the context of the Adapter pattern, what is an 'interface adapter'?

    <p>An adapter that inherits from the existing class and implements a new interface</p> Signup and view all the answers

    What is the key difference between an 'interface adapter' and an 'object adapter' in the Adapter pattern?

    <p>Inheritance vs composition</p> Signup and view all the answers

    When is a 'two-way adapter' typically used in software development?

    <p>To implement interfaces of both the target and the adaptee</p> Signup and view all the answers

    Why is the Adapter pattern mostly used when adapting existing classes?

    <p>Because it ensures backward compatibility with older systems</p> Signup and view all the answers

    What does an 'object adapter' do differently compared to an 'interface adapter' in the Adapter pattern?

    <p>It uses composition instead of inheritance</p> Signup and view all the answers

    Which design approach is often referred to as 'Object Adapter' in the context of the Adapter pattern?

    <p>&quot;Composition Design&quot;</p> Signup and view all the answers

    Study Notes

    Bridge Pattern

    • The purpose of the Bridge pattern is to decouple an abstraction from its implementation, allowing them to vary independently.
    • The client interacts with the Bridge by calling its methods, which then delegate the requests to the chosen implementation.
    • When methods are called in the Bridge, they forward the requests to the Implementation interface, allowing the implementation to perform the necessary actions.
    • The Bridge relates to the Implementation interface by providing a layer of abstraction between the client and the implementation, allowing the client to work with different implementations without knowing their details.
    • Adding additional methods on a client's view in the Bridge pattern provides flexibility by allowing the client to work with different implementations without needing to know their internal details.

    Adapter Pattern

    • The main goal of the Adapter pattern is to allow incompatible objects to work together by converting the interface of one object into an interface expected by the clients.
    • An 'interface adapter' in the Adapter pattern is a type of adapter that converts the interface of one class into another interface expected by the clients.
    • The key difference between an 'interface adapter' and an 'object adapter' is that an interface adapter converts the interface, whereas an object adapter adapts the object itself.
    • A 'two-way adapter' is typically used when an object needs to work with two different interfaces.
    • The Adapter pattern is mostly used when adapting existing classes because it allows the developer to reuse existing code without modifying it.
    • An 'object adapter' in the Adapter pattern adapts the object itself, whereas an interface adapter converts the interface.
    • The 'Object Adapter' design approach in the Adapter pattern involves adapting the object itself, rather than just its interface.

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    Description

    Learn about the bridge pattern in software design where existing code can be invoked with a specific version without changing the calling code. Explore how the client interacts with the abstraction and implementor interface. Understand how aggregation is done on the implementation interface in the Bridge.

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