Hi Pinaki,
I am really sorry for the delayed reply. Thanks a bunch for
your answer. I will try it tomorrow and will let you know how it goes.
Mike,
Will keep you posted.
Thanks,
JP
Pinaki Poddar wrote:
>
> Hi,
> > Is it possible to delete a child from an object tree while merging the
> whole object?
> Yes.
>
> The feature you describe is often called 'orphan delete'.
>
> Please note that you have to annotate the Parent container with
> @ElementDependent to really delete the child from that database. Something
> like
> @OneToMany(mappedBy="parent")
> @ElementDependent
> private List<Child> children;
>
>
> @ElementDependent is a OpenJPA specific extension. Otherwise, Parent-Child
> relation will not exist, but the Child record will still remain in the
> database. This is natural because in Java, the relations represent
> association, not ownership.
>
>
>
> JayaPrakash wrote:
>>
>> Hi,
>>
>> Is it possible to delete a child from an object tree while
>> merging the whole object?
>>
>> For example I have an Order and a LineItem objects, and the Order has a
>> onetomany relationship with LineItem. The Order has 5 LineItem objects
>> and want to delete one of the LineItem objects when I do
>> em.merge(lineItem);
>>
>> To accomplish this what I would like to do is, while I send the Order
>> object to my DAO class, I would send only 4 LineItems in the list
>> eliminating the 1 LineItem which I wanted to be deleted from the
>> Database.
>>
>> Can anyone let me know pls, if this kind of deletion is supported by
>> OpenJPA?
>>
>> I appreciate everybody for taking a look at my post.
>>
>>
>> Thanks,
>> JP
>>
>
>
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