Spring Roo - Reference Documentation DISID CORPORATION S.L. Table of Contents Getting started . 1 1. Overview . 2 2. What’s new in Spring Roo 2.0 . 3 Improved extensibility . 3 No backward compatibility . 3 Usability improvements . 3 Centered in Spring technologies . 3 Application architecture . 4 Domain model . 4 View layer . 4 3. Requirements . 6 4. Install Spring Roo . 7 Using Spring Roo . 9 5. The Roo shell . 10 6. Impatient beginners . 12 7. Create your Spring Boot application . 13 8. Configure the project settings . 14 9. Setup the persistence engine . 15 10. The domain model . 16 JPA entities . 16 DTOs . 20 11. The data access layer . 21 Spring Data repositories . 21 Default queries . 21 12. The service layer . 22 Service API and Impl . 22 13. The view layer . 23 Thymeleaf view engine . 23 Spring MVC Controllers . 23 Spring Webflow . 25 14. The integration layer . 26 REST API . 26 WS API . 26 Email . ..