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Work on Hexagonal Architecture presentation
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‎hexagonal/README.md

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## Applicability
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Use Hexagonal Architecture pattern when
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* it is important that the application is fully testable
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* you use Domain Driven Design methodology and/or Microservices architectural style
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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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## Real world examples
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‎hexagonal/etc/hexagon.png

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‎hexagonal/etc/layers.png

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‎hexagonal/etc/presentation.html

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<!DOCTYPE html>
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<html>
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<head>
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<title>Title</title>
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<meta charset="utf-8">
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<style>
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@import url(https://fonts.googleapis.com/css?family=Yanone+Kaffeesatz);
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@import url(https://fonts.googleapis.com/css?family=Droid+Serif:400,700,400italic);
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@import url(https://fonts.googleapis.com/css?family=Ubuntu+Mono:400,700,400italic);
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body { font-family: 'Droid Serif'; }
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h1, h2, h3 {
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font-family: 'Yanone Kaffeesatz';
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font-weight: normal;
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}
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.remark-code, .remark-inline-code { font-family: 'Ubuntu Mono'; }
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</style>
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</head>
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<body>
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<textarea id="source">
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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[![Alt text](layers.png)]
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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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# Diagram
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.center[![Alt text](hexagon.png)]
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---
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# Concepts
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* Ports are interfaces
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* Adapters are implementations
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* Driver ports vs driven ports
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---
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# Real world examples
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* [Apache Isis](https://isis.apache.org/)
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---
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# Implementation example
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* http://java-design-patterns.com/patterns/hexagonal/
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</textarea>
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<script src="https://gnab.github.io/remark/downloads/remark-latest.min.js">
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</script>
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<script>
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var slideshow = remark.create();
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</script>
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</body>
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</html>
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‎presentation.html

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