Spring 数据 JPA findAll，中间有 table（PropertyReferenceException）

Question

这是我的模型：

一个 AdmisHistory 链接到多个 Admis
一个 Admis 链接到 0 个或一个 AdmisRejet

实体：

public class AdmisHistory {
    @OneToMany(fetch = FetchType.EAGER, mappedBy = "admisHistory", cascade = CascadeType.ALL, orphanRemoval = true)
    private List<Admis> admis = new ArrayList<>();

public class Admis {
    @ManyToOne(cascade = CascadeType.ALL)
    @JoinColumn(name = ADMIS_HISTORY_ID)
    private AdmisHistory admisHistory;

    @OneToOne(mappedBy = "admis", cascade = CascadeType.ALL)
    private AdmisRejet admisRejet;

public class AdmisRejet {
    @OneToOne(cascade = CascadeType.ALL)
    @JoinColumn(name = ADMIS_ID)
    private Admis admis;

给定 AdmisHistory，我想检索 AdmisRejet 的列表。

我设法做到了：

public interface AdmisRepository extends CrudRepository<Admis, Long> {
    List<Admis> findAllAdmisByAdmisHistory(AdmisHistory admisHistory);
...

// It work llike this:
 admisRepository.findAllAdmisByAdmisHistory(admisHistory)
.stream()
.filter(adm -> adm.getAdmisRejet() != null)

现在我想通过对存储库的简单调用来完成它。它会更有效率和可读性。

像这样：

 public interface AdmisRejetRepository extends CrudRepository<AdmisRejet, Long> {
        List< AdmisRejet> findAllAdmisRejetByAdmisHistory(AdmisHistory admisHistory);
    }

但是我得到这个错误：

Caused by: org.springframework.data.mapping.PropertyReferenceException: No property history found for type Admis! Traversed path: AdmisRejet.admis.'

我尝试使用@Query，但语法不好：

public interface AdmisRejetRepository extends CrudRepository<AdmisRejet, Long> {
    @Query("SELECT a " +
            "FROM AdmisRejet ar " +
            "LEFT JOIN ar.admis a, " +
            "LEFT JOIN a.admisHistory ah " +
            "WHERE ah = :admisHistory")
    List< AdmisRejet> findAllByHistory(AdmisHistory admisHistory);
}

我该怎么做？

Answer 1

尝试

  List< AdmisRejet> findAllAdmisRejetByAdmisHistoryWhereAdmisRejecIsNotNul(AdmisHistory admisHistory);

或类似的东西。

Answer 2

如果我正在阅读正确的规范，这应该可以。

@Query("SELECT DISTINCT ar 
        FROM AdmisRejet ar
        WHERE ar.admis.admisHistory = :history")
List<AdmisRejet> findAdmisRejetByAdmisHistory(AdmisHistory history);

Spring 数据 JPA findAll，中间有 table（PropertyReferenceException）

Spring Data JPA findAll with table in between (PropertyReferenceException)

java

jpql

spring-data-jpa