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The Bridge Pattern

DZone's Guide to

The Bridge Pattern

· Java Zone
Free Resource

Just released, a free O’Reilly book on Reactive Microsystems: The Evolution of Microservices at Scale. Brought to you in partnership with Lightbend.

Description:

Decouples abstraction from implementation. Inheritance tightly couples an abstraction with an implementation at compile time. The Bridge pattern can be used to avoid binding between abstraction and implementation and to select the implementation at runtime.

decouple an abstraction from its implementation so that the two can vary independently”.

Example:

If you have a Car hierarchies of classes ,it can become extremely big like in the below diagram.

Benefits:

  • Defines class hierarchies consisting of primitive objects and composite objects
  • Makes it easier to add new kinds of components
  • Provides flexibility of structure and a manageable interface

When to use:

  • You want to represent the whole hierarchy or a part of the hierarchy of object
  • You want clients to be able to ignore the difference between compositions of objects and individual objects
  • The structure can have any level of complexity and is dynamic.

Diagram:

Or

Strategies and techniques for building scalable and resilient microservices to refactor a monolithic application step-by-step, a free O'Reilly book. Brought to you in partnership with Lightbend.

Topics:

Published at DZone with permission of Cristian Chiovari, DZone MVB. See the original article here.

Opinions expressed by DZone contributors are their own.

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