spring-data-rest，您能否提供实体的完整详细信息而不是(或带有)链接 [英] spring-data-rest, can you provide full details of entity instead of (or with) link

问题描述

有没有办法返回加入实体的完整详细信息而不是链接?在下面的示例中，我还想返回产品的详细信息，如果我有 100 次购买的列表，则可以避免必须拨打 100 次电话才能获取产品详细信息.

Is there a way to return the full details of a joined entity instead of a link? In the example below I want to also return the details of the product, if I have list of 100 purchases, it would avoid having to make 100 calls to get the product details.

Product、User 和 Purchase 实体的存储库都是使用 spring-data-jpa 创建的

The repositories for Product, User and Purchase entities are all created using spring-data-jpa

{
  "_embedded" : {
    "purchase" : [ {
      "_links" : {
        "product" : {
          "href" : "http://localhost:8080/webapp/purchase/1/product"
        },
        "user" : {
          "href" : "http://localhost:8080/webapp/purchase/1/user"
        }
      },
      "purchasedOn" : "2014-02-23",
      "amount" : 1
    } ]
  }
}

实体和存储库；

@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<>();

}

@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(fetch = FetchType.EAGER, targetEntity = Product.class)
    @JoinColumn(name = "product_id", referencedColumnName = "id")
    private Product product;

    @Column(name = "purchase_date")
    private Date purchaseDate;

    private Integer amount;

}

@Repository
public interface PurchaseRepository extends JpaRepository<Purchase, Long> {}

推荐答案

似乎已经有针对此功能的新功能请求；

It would seems there is already a New Feature request for this functionality;

https://jira.springsource.org/browse/DATAREST-221

https://jira.springsource.org/browse/DATAREST-243

在该功能实现之前，我会一直悬而未决.

I'll leave the question open until the feature has been implemented.

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