Question

我有3个实体：

实体A，实体B，实体C.

public class Entity_A {

    public List<Entity_B> entBList;
    Some other objects...

     @OneToMany(mappedBy="entityA", cascade = {CascadeType.ALL}, fetch = FetchType.EAGER, orphanRemoval=true)
     @Fetch(value = FetchMode.SUBSELECT)
     public List<GebruikerKind> getEntBList() {
        return entBList;
     }

} 

public class Entity_B {
    public Entity_A entityA;
    public Entity_C entityC;
    Some other objects...


    @ManyToOne(cascade = CascadeType.ALL, fetch = FetchType.EAGER)
    @JoinColumn(name = "COLUMNJOINNAME")
    public Entity_A getEntityA() {
        return entityA;
    }

    @ManyToOne(cascade = CascadeType.ALL, fetch = FetchType.EAGER)
    @JoinColumn(name = "OTHERCOLUMNJOINNAME)
    public Entity_C getEntityC() {
        return entityC;
    }
}

public class Entity_C {
    public List<Entity_B> entBList;
    Some other objects...


     @OneToMany(mappedBy="entityC", cascade = {CascadeType.ALL}, fetch = FetchType.EAGER, orphanRemoval=true)
     @Fetch(value = FetchMode.SUBSELECT)
     public List<GebruikerKind> getEntBList() {
        return entBList;
     }
}

注意：所有的setter都可用，并且还有很多其他对象可用:)。据我所知，我的配置很好.. 我试图删除Entity_B：

Query query = getCurrentSession().createQuery(
            "delete from " + Entity_B.class.getName() + " eb " +
            " where eb.entityA.someField = :someField and eb.entityC.someOtherField = :someOtherField"); 


    query.setString("someField", someId);
    query.setString("someOtherField", someOtherId);
    return query.executeUpdate();

天堂里的烦恼：

Hibernate抛出了这个SQLGrammarException：意外的令牌：Cross。谁知道我能做什么？

Answer 1

一种解决方案是重写查询。

您可以通过编写SQL查询来获取需要删除的ID来避免eb.entityA和eb.entityC之间的交叉连接。然后在每个ID上调用HQL删除。

Hibernate delete：SQLGrammarException意外的令牌：CROSS

1 个答案: