worked out what the issue was; I need to create a JpaRepository for the Purchase entity. Soon as I added that, the REST links for purchases are available.
spring-data-rest, manytomany relation with join table
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13-10-2022 - |
题
Is it possible to expose a manytomany relationship that uses a join entity (that contains extra data columns), below is my entities;
I'm trying to get 'purchases' to show in REST, I've put in 'products' as an example of a working REST mapping;
@Entity
public class User {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
@OneToMany(fetch = FetchType.LAZY, cascade = CascadeType.ALL, targetEntity = Purchase.class, orphanRemoval = true)
@JoinColumn(name = "user_id", updatable = false)
private List<Purchase> purchases = new ArrayList<>();
@ManyToMany
@JoinColumn(name = "user_id", updatable = false)
private List<Product> products = new ArrayList<>();
}
@Entity
public class Product {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
private String name;
}
@Entity
public class Purchase implements Serializable {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
Long id;
@ManyToOne
@JoinColumn(name = "user_id", referencedColumnName = "id")
private User user;
@ManyToOne(targetEntity = Prodect.class)
@JoinColumn(name = "product_id", referencedColumnName = "id")
private Product product;
@Column(name = "purchase_date")
private Date purchaseDate;
}
So if i send the REST call;
[GET http://localhost:8080/webapp/users/1]
It returns links for [http://localhost:8080/webapp/users/1/products] but not for [http://localhost:8080/webapp/users/1/purchases]
解决方案
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