2016-11-12 22:44:08 +02:00
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class: center, middle
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# Hexagonal Architecture
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---
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# Also known as
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* Ports and Adapters
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* Clean Architecture
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* Onion Architecture
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---
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# Layered architecture problems
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* No clear application core
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* Business logic leaks to the presentation layer
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<br />
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<br />
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.center[]
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---
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# Intent
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* Application can be driven by users, programs, automated test or batch scripts
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* Application can be developed and tested in isolation from its eventual run-time devices and databases
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---
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# Applicability
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Use Hexagonal Architecture pattern
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* When the application needs to be independent of any frameworks
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* When it is important that the application highly maintainable and fully testable
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---
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2016-11-13 11:23:22 +02:00
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# Concepts
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2016-11-12 22:44:08 +02:00
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2016-11-13 11:23:22 +02:00
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* Ports are interfaces
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* The ports that drive the application are called primary ports
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* The ports that are driven by the application are called secondary ports
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2016-11-12 22:44:08 +02:00
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---
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# Concepts
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2016-11-13 11:23:22 +02:00
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* Adapters are interface implementations
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* Typically different adapters for testing and production are provided
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---
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# Diagram
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.center[]
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2016-11-12 22:44:08 +02:00
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---
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# Real world examples
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2016-11-13 11:23:22 +02:00
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* [Apache Isis](https://isis.apache.org/) builds generic UI and REST API directly from the underlying domain objects
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2016-11-12 22:44:08 +02:00
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---
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2016-11-13 11:23:22 +02:00
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# Tutorials
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2016-11-12 22:44:08 +02:00
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2016-11-13 11:23:22 +02:00
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* Blog http://java-design-patterns.com/blog/build-maintainable-systems-with-hexagonal-architecture/
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* Source code http://java-design-patterns.com/patterns/hexagonal/
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2016-11-12 22:44:08 +02:00
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