Relationships

GraphQL JPA Query engine will introspect JPA Entity Metadata entity class relationships to support ORM queries, i.e. given one to many relationship between Author and Book entities,

@Entity
public class Author {

    @Id
    Long id;

    String name;

    @OneToMany(mappedBy = "author", fetch = FetchType.LAZY)
    Set<Book> books;
}

@Entity
public class Book {

    @Id
    Long id;

    String title;

    @ManyToOne(fetch = FetchType.LAZY, optional = false)
    Author author;