Java Can'；t从@OneToMany集合中删除元素

我有一个实体实体1，它与实体2有一对多关系，如下所示：

1-实体1:

@Entity
@Table(name = "Entity1", catalog = "mydb")
public class Entity1 implements java.io.Serializable {

  @OneToMany(fetch = FetchType.LAZY, mappedBy = "entity1", cascade = javax.persistence.CascadeType.ALL)
  @OrderBy("id")
  private Set<Entity2> collection = new HashSet<Entity2>(
            0);

}

    entity1Obj.getEntity2().remove(entity2);
    log.debug("size after remove: "+ entity1Obj.getEntity2().size()); // size decreases correctly, so the entity is removed from the collection
    entity1Dao.updateEntity1(entity1);

   public void updateEntity1(Entity1 entity1) {
        getCurrentSession().update(getCurrentSession().merge(entity1));
    }

3-以下是我从集合中删除实体的方法：

@Entity
@Table(name = "Entity1", catalog = "mydb")
public class Entity1 implements java.io.Serializable {

  @OneToMany(fetch = FetchType.LAZY, mappedBy = "entity1", cascade = javax.persistence.CascadeType.ALL)
  @OrderBy("id")
  private Set<Entity2> collection = new HashSet<Entity2>(
            0);

}

    entity1Obj.getEntity2().remove(entity2);
    log.debug("size after remove: "+ entity1Obj.getEntity2().size()); // size decreases correctly, so the entity is removed from the collection
    entity1Dao.updateEntity1(entity1);

   public void updateEntity1(Entity1 entity1) {
        getCurrentSession().update(getCurrentSession().merge(entity1));
    }

4-DAO方法：

@Entity
@Table(name = "Entity1", catalog = "mydb")
public class Entity1 implements java.io.Serializable {

  @OneToMany(fetch = FetchType.LAZY, mappedBy = "entity1", cascade = javax.persistence.CascadeType.ALL)
  @OrderBy("id")
  private Set<Entity2> collection = new HashSet<Entity2>(
            0);

}

    entity1Obj.getEntity2().remove(entity2);
    log.debug("size after remove: "+ entity1Obj.getEntity2().size()); // size decreases correctly, so the entity is removed from the collection
    entity1Dao.updateEntity1(entity1);

   public void updateEntity1(Entity1 entity1) {
        getCurrentSession().update(getCurrentSession().merge(entity1));
    }

问题：我在控制台中得到的是一个针对entity2的select查询，该查询应该被删除，没有删除查询，也没有删除任何内容

---

请建议如何解决此问题。

我将

cascade=CascadeType.全部
替换为
orphaneremovation=true
，现在可以正常工作