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Designing Hexagonal Architecture with Java

You're reading from   Designing Hexagonal Architecture with Java An architect's guide to building maintainable and change-tolerant applications with Java and Quarkus

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Product type Paperback
Published in Jan 2022
Publisher Packt
ISBN-13 9781801816489
Length 460 pages
Edition 1st Edition
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Author (1):
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Davi Vieira Davi Vieira
Author Profile Icon Davi Vieira
Davi Vieira
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Table of Contents (21) Chapters Close

Preface 1. Section 1: Architecture Fundamentals
2. Chapter 1: Why Hexagonal Architecture? FREE CHAPTER 3. Chapter 2: Wrapping Business Rules inside Domain Hexagon 4. Chapter 3: Handling Behavior with Ports and Use Cases 5. Chapter 4: Creating Adapters to Interact with the Outside World 6. Chapter 5: Exploring the Nature of Driving and Driven Operations 7. Section 2: Using Hexagons to Create a Solid Foundation
8. Chapter 6: Building the Domain Hexagon 9. Chapter 7: Building the Application Hexagon 10. Chapter 8: Building the Framework Hexagon 11. Chapter 9: Applying Dependency Inversion with Java Modules 12. Section 3: Becoming Cloud-Native
13. Chapter 10: Adding Quarkus to a Modularized Hexagonal Application 14. Chapter 11: Leveraging CDI Beans to Manage Ports and Use Cases 15. Chapter 12: Using RESTEasy Reactive to Implement Input Adapters 16. Chapter 13: Persisting Data with Output Adapters and Hibernate Reactive 17. Chapter 14: Setting Up Dockerfile and Kubernetes Objects for Cloud Deployment 18. Chapter 15: Good Design Practices for Your Hexagonal Application 19. Assessments 20. Other Books You May Enjoy

Chapter 13: Persisting Data with Output Adapters and Hibernate Reactive

In the previous chapter, we learned about some of the advantages that can be brought to a system by using Quarkus reactive capabilities. Out first step on the reactive road was to implement Reactive input adapters using RESTEasy Reactive. Although the input adapters' endpoints are being served reactively, we still have the output adapters working in a synchronous and blocking fashion.

To turn the hexagonal system into a more Reactive one, in this chapter, we'll first learn how to configure Object Relational Mapping (ORM) on system entities by using Hibernate Reactive and Panache. Once the system entities are properly configured, we'll learn how to use these entities to connect to a MySQL database reactively.

The following are the topics we'll cover in this chapter:

  • Introducing Hibernate Reactive and Panache
  • Enabling reactive behavior on output adapters
  • Testing reactive...
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