Library3: API Rest Library Book @ManyToMany @OneToOne CRUD with Swagger

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Spring Boot Projects: Library3

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

• Library and Address @Entity
• 1:1 relationship
• n:m relationship: inverse-side or owning-side
  • Every @ManyToMany association has two sides and a join table:
    • the owning side
    • and the non-owning, or inverse, side.
    • The join table for the relationship, if not defaulted,
  • The join table is must be specified on the owning side.
  • If the association is bidirectional, either side may be designated as the owning side.
  • If the relationship is (not) bidirectional, the non-owning side must use the mappedBy element of the @ManyToMany annotation to specify the relationship field or property of the owning side.
• Annotations:
  • @OneToOne
  • @ManyToMany
  • @JoinTable

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