如何使用CriteriaBuilder API将这个复杂的sql转换为java代码

Question

我遇到了这个复杂的SQL问题。

SELECT *
FROM   t_shop s
   LEFT JOIN (SELECT w.`shop_id`,
                     Min(ws.`create_time`) time
              FROM   `t_wallet` w
                     LEFT JOIN `t_wallet_snapshot` ws
                            ON w.`id` = ws.`wallet_id`
              WHERE  ws.type = 4
                 AND ws.status = 0
              GROUP  BY w.`shop_id`
              ORDER  BY time) temp
          ON s.id = temp.`shop_id`
ORDER  BY temp.time DESC

我已经有了这样的实体，例如Shop.class，Wallet.class和WalletSnapshot.class：

@Getter
@Setter
@Entity
@NoArgsConstructor
@Table(name = "t_shop")
@FieldDefaults(level = AccessLevel.PRIVATE)
public class Shop implements Serializable {

  @Id
  @GeneratedValue
  Integer id;

  @Column(nullable = false)
  String name;

  @OneToMany(mappedBy = "shop", fetch = FetchType.LAZY)
  List<Wallet> wallets;
}

我的存储库是这样的：

public interface ShopRepository extends JpaRepository<Shop, Integer>, JpaSpecificationExecutor<Shop> {
}

服务中的

：

public List<ShopDTO> getAll(ShopQuery shopQuery, Sort sort) {
  return this.shopRepository.findAll(ShopSpec.spec(shopQuery, false), sort).stream().map(ShopDTO::new)
            .collect(Collectors.toList());
}

现在，我想知道如何在ShopSpec中编写我的代码以对像sql这样的商店进行排序：

public interface ShopSpec {

  static Specification<Shop> spec(ShopQuery shopQuery, Boolean checkUnique) {
    return (root, query, cb) -> {
        query.distinct(true);
        List<Predicate> predicates = new ArrayList<>();
        if (shopQuery.getId() != null) {
            if (checkUnique != null && checkUnique) {
                predicates.add(cb.notEqual(root.get("id"), shopQuery.getId()));
            } else {
                predicates.add(cb.equal(root.get("id"), shopQuery.getId()));
            }
        }
        return cb.and(predicates.toArray(new Predicate[predicates.size()]));
    };
  }
}

这是我第一次发布问题。我已经尽力描述了我的问题。