You are viewing a plain text version of this content. The canonical link for it is here.
Posted to jdo-user@db.apache.org by Renato Garcia <re...@gmail.com> on 2009/12/14 14:27:17 UTC
Persistent-dirty retrieve
Hi,
Does a call to retrieve on a Persistent-dirty object should load it's
fields? According to the spec, the status should remain unchanged, but I
could not find anything regarding the actual load of the fields.
Tks for the clarification.
Renato
Re: Persistent-dirty retrieve
Posted by Craig L Russell <Cr...@Sun.COM>.
Hi Renato,
If you write a patch, that will move the process forward.
Thanks,
Craig
On Dec 14, 2009, at 10:29 AM, Renato Garcia wrote:
> Craig,
>
> Tks for your answer.
>
> So, it would load fields that haven't been load yet, keep the dirty
> ones untouched, and the status of the object would remain P_DIRTY,
> correct?
>
> If that's correct, can we make a change to the TCK as suggested on
> this thread of Datanucleus ( http://www.jpox.org/servlet/forum/viewthread_thread,5891
> )?
>
> I have a scenario where my object is P_DIRTY and I have unloaded
> fields that I wan't to read their values in order to validate the
> object. However, calling retrieve on it has no effect when it is
> dirty. When this same object is not dirty, calling retrieve load the
> fields.
>
> Regards,
> Renato
>
>
> Craig L Russell wrote:
>> Hi Renato,
>>
>> The purpose of retrieve is to load instances according to the
>> current fetch plan. But changed values are not overwritten by
>> retrieve.
>>
>> If you want to overwrite values, then you should use refresh, which
>> is intended explicitly to overwrite changes.
>>
>> Best regards,
>>
>> Craig
>>
>> On Dec 14, 2009, at 5:27 AM, Renato Garcia wrote:
>>
>>> Hi,
>>>
>>> Does a call to retrieve on a Persistent-dirty object should load
>>> it's fields? According to the spec, the status should remain
>>> unchanged, but I could not find anything regarding the actual load
>>> of the fields.
>>>
>>> Tks for the clarification.
>>>
>>> Renato
>>
>> Craig L Russell
>> Architect, Sun Java Enterprise System http://db.apache.org/jdo
>> 408 276-5638 mailto:Craig.Russell@sun.com
>> P.S. A good JDO? O, Gasp!
>>
>>
>
Craig L Russell
Architect, Sun Java Enterprise System http://db.apache.org/jdo
408 276-5638 mailto:Craig.Russell@sun.com
P.S. A good JDO? O, Gasp!
Re: Persistent-dirty retrieve
Posted by Renato Garcia <re...@gmail.com>.
Craig,
Tks for your answer.
So, it would load fields that haven't been load yet, keep the dirty ones
untouched, and the status of the object would remain P_DIRTY, correct?
If that's correct, can we make a change to the TCK as suggested on this
thread of Datanucleus (
http://www.jpox.org/servlet/forum/viewthread_thread,5891 )?
I have a scenario where my object is P_DIRTY and I have unloaded fields
that I wan't to read their values in order to validate the object.
However, calling retrieve on it has no effect when it is dirty. When
this same object is not dirty, calling retrieve load the fields.
Regards,
Renato
Craig L Russell wrote:
> Hi Renato,
>
> The purpose of retrieve is to load instances according to the current
> fetch plan. But changed values are not overwritten by retrieve.
>
> If you want to overwrite values, then you should use refresh, which is
> intended explicitly to overwrite changes.
>
> Best regards,
>
> Craig
>
> On Dec 14, 2009, at 5:27 AM, Renato Garcia wrote:
>
>> Hi,
>>
>> Does a call to retrieve on a Persistent-dirty object should load it's
>> fields? According to the spec, the status should remain unchanged,
>> but I could not find anything regarding the actual load of the fields.
>>
>> Tks for the clarification.
>>
>> Renato
>
> Craig L Russell
> Architect, Sun Java Enterprise System http://db.apache.org/jdo
> 408 276-5638 mailto:Craig.Russell@sun.com
> P.S. A good JDO? O, Gasp!
>
>
Re: Persistent-dirty retrieve
Posted by Craig L Russell <Cr...@Sun.COM>.
Hi Renato,
The purpose of retrieve is to load instances according to the current
fetch plan. But changed values are not overwritten by retrieve.
If you want to overwrite values, then you should use refresh, which is
intended explicitly to overwrite changes.
Best regards,
Craig
On Dec 14, 2009, at 5:27 AM, Renato Garcia wrote:
> Hi,
>
> Does a call to retrieve on a Persistent-dirty object should load
> it's fields? According to the spec, the status should remain
> unchanged, but I could not find anything regarding the actual load
> of the fields.
>
> Tks for the clarification.
>
> Renato
Craig L Russell
Architect, Sun Java Enterprise System http://db.apache.org/jdo
408 276-5638 mailto:Craig.Russell@sun.com
P.S. A good JDO? O, Gasp!