Library2: API Rest Author Book @OneToMany CRUD with Swagger

Welcome to the cifojava2022-3 wiki!

Spring Boot Projects: Library2

Base project

• Base project:
  • POM
  • API REST Book
  • DataBase H2: Library2
    • First-time CREATE DDL : First-time CREATE DDL option (after that UPDATE) in application.properties
  • Application.properties
  • Command Line Runner with methods to test
  • Swagger: URL swagger : http://localhost:8080/swagger-ui.html
  • @Entity, @RestController, @Service, @CrudRepository JPA 2.0, @Component

New tools

• Author @Entity
• 1:n relationship: unidrectional or bidirectional
• Annotations:
  • @OneToMany
  • @ManyToMany
  • @JoinColumn
• JUnit Jupiter to test

  • ItellJIdea plug-in JUnit in action :

    

  • Maven Dependency: link junit-jupiter-api/5.9.0-M1

         `<!-- https://mvnrepository.com/artifact/org.junit.jupiter/junit-jupiter-api -->`
                `<dependency>`
                `<groupId>org.junit.jupiter</groupId>`
                `<artifactId>junit-jupiter-api</artifactId>`
                `<version>5.9.0-M1</version>`
                `<scope>test</scope>`
         `</dependency>`
    

Versions

• version 1.0 : basic project:

  • Author and Book @Entity wiht basic CRUD operations (Read and Create)
  • without assigning Author <1:n> Book
  • bug : dob parsing wrong to H2-DB => just a typo dof instead of dob in constructor
  • BE CAREFUL :
    • infinite recuresion is running so ... @Jsonignore besides @ManyToOne (1)
    • also in toString so write it without author (2)

• version 1.1 : tests done by JUnit and Swagger

  • assign Book > Autor and Author > Book

  • study this problems :

    • save books from aiuthor without authorId
    • save author-book from REST

  • @Jsonignore in @ManyToOne author attribute's book to avoid Infinite Recursion

  • Execution 1:n Bidirectional

    

• version 1.2 : refactor and ddd (domains)

  • refactor to DDD,domains

    

  • responseEntity in action

    

  • all CRUD book methods impplemented

    

Check this: offcial repo book JPA