JPA（休眠）映射OneToMany不正确？

发布于 2024-11-06 18:17:40 字数 708 浏览 0 评论 0原文

你好我是 JPA 新手，我认为我的映射注释有问题我正在使用 hibernate 3.6.1 Final 和 JPA 2

以下是我的课程：

    public class Resident {
    ...
        @OneToMany(orphanRemoval = true, mappedBy = "resident")
        @Cascade({org.hibernate.annotations.CascadeType.ALL})
        public List<ResidentInfo> infos;
    }

    public class ResidentInfo {
    ...
        @ManyToOne(optional = false)
        public Resident resident;
    }

当我第一次尝试保存数据时，一切都运行良好。

但是，当我尝试使用 save() 方法更新记录时，参数 orphanRemoval 似乎不适用。

例如，如果 infos 是 4 条记录的列表，并且我通过删除 2 条记录来更新它，则删除的 2 条记录不会从数据库中删除

我还有另一个问题，当我尝试将元素添加到列表 infos 时，然后我没有错误，但是添加的元素没有记录在数据库中。

为了记录数据，我只是使用 resident.save()，也许我错了？

原文

Hi
I'm new to JPA and I think I have an issue with my mapping annotations
I'm using hibernate 3.6.1 final with JPA 2

Here are my class :

    public class Resident {
    ...
        @OneToMany(orphanRemoval = true, mappedBy = "resident")
        @Cascade({org.hibernate.annotations.CascadeType.ALL})
        public List<ResidentInfo> infos;
    }

    public class ResidentInfo {
    ...
        @ManyToOne(optional = false)
        public Resident resident;
    }

When I try to save data for the first time, all is working perfectly.

However when I try to update a record by using save() method, the parameter orphanRemoval seems to don't be applied.

For instance if infos was a list of 4 records, and I update it by removing 2 records, the 2 records removed are not deleted from the database

I also have another issue, when I try to add an element to my list infos, then I don't have error, but the elements added are not recorded in the database.

In order to record datas I simply use resident.save(), maybe I'm wrong ?

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