Library4: API Rest Library Book Author @ManyToMany @OneToMany CRUD with Swagger and Inherence

Welcome to the cifojava2022-3 wiki!

Spring Boot Projects: Library4

Base project

• Base project:
  • POM
  • 1:n relationship: unidrectional or bidirectional
    • @Entity book and List<Book>
    • Author @Entity
  • 1:1 relationship
    • library and address @Entity
  • n:m @Entity book and library
  • Annotations:
    • @OneToMany
    • @ManyToMany
    • @JoinColumn
    • @OneToOne
    • @ManyToMany
    • @JoinTable
  • Swagger: URL swagger : http://localhost:8080/swagger-ui.html
  • JUnit Jupiter to test
  • DataBase H2: Library4
    • First-time CREATE DDL : First-time CREATE DDL option (after that UPDATE) in application.properties
    • Application.properties
    • Command Line Runner with methods to test and JavaFaker
    • @Service, @CrudRepository JPA 2.0, @Component

New tools

• Define a n:m relationship with:

  • @Entity borrow
    • book 1:n borrow n:1 user
  • Tools per class
    • getUUID, spring doc
    • Audit, as a Abstract class, example
    • JavaFaker
    • DTO, Data Transfer Object :
      • Data Transfer Object DTO is an object that carries data between processes.
      • Martin Fowlwer's article
    • Create QR
    • JPQL : Java Persistence/JPQL
  • Inherence:

    • Inherence, Inheritance for a JPA Entity and Interface

    • Study inherence and JPA repository cifojava2022-6

       @MappedSuperclass
       //not @Entity
       public class Book{
      
          @Id
          //private long bookId;
          private UUid bookId;
          private String title;
          // constructor, getters, setters
        }
      
      
        @Entity
        public class BookItem extends Book{
        @Id
        private long bookItemId;
        private boolean isLost;
        // constructor, getters, setters 
        }
      

• UML back-end, done by draw.io

  • Tentative draft-UML to study and to start working:

    

Versions

• version 1.0 : basic project from library2 and library3

  • Tree project

    

  • version 1.1 : basic project from library2 and library3 with ddd, domians