org.hibernate.HibernateException:找到了多个具有给定标识符的行:578,用于类:com.hibernate.query.performance.persistence.model.Store
数据库没有重复的存储行,标识符为578.使用SQL检查:
SELECT *
FROM store
WHERE store.store_id = 578;
它返回了0条记录。
关于One,Two的其他问题指出问题可能与OneToOne映射本身有关。 Store和Staff实体具有 OneToOne 关系,我的映射如下:
员工:
@OneToOne(mappedBy = "manager_staff", cascade = CascadeType.ALL, orphanRemoval = true)
public Store getStore() {
return store;
}
商品
@OneToOne
@JoinColumn(name = "manager_staff_id", referencedColumnName = "staff_id", nullable = false)
public Staff getManager_staff() {
return manager_staff;
}
如何解决?
更新
当查询被修改为:
时,异常发生了一些变化Query query = session.createQuery("select c " +
" from Rental r, Customer c join fetch c.address address join fetch address.store store join fetch address.city city " +
" where r.customer = c " +
" and r.returnDate is null");
例外:
org.hibernate.HibernateException: More than one row with the given identifier was found: 2951, for class: com.hibernate.query.performance.persistence.model.Store
没有对数据库的修改。我不确定HQL是否正确,因为JProfiler无法捕获任何JPA / Hibernate记录。捕获的唯一指标是运行的JDBC连接。
答案 0 :(得分:-1)
您的数据有问题,OneToOne
表示您必须拥有该链接 - 因此请确保查询返回一条记录。如果它需要是可选的,你必须使它OneToMany