OpenJPA missing extensions

[Steven Corbett <sc...@au1.ibm.com>]

Hi,

I noticed that OpenJPA does not recognize certain extensions documented in
the dev guide. Specifically, the '@ElementColumn', '@ElementEmbeddedColumn'
and '@ElementStrategy' are not recognized. I discovered this while trying
to use the OpenJPA extensions for collections of value/embedded types. A
quick grep through the code base confirmed this.

I'm not sure if the code is incomplete or the dev guide is out-of-date.
Does anyone know which one is the case? I know these features are present
in Kodo, I am just unsure that they were carried over to OpenJPA.

Regards,
Steve

Re: OpenJPA missing extensions

[Marc Prud'hommeaux <mp...@apache.org>]

Steven-

Those were actually some of the mappings that we didn't release to  
OpenJPA ... we missed removing their mention in the documentation.  
I've updated the doc source to exclude them.


On Sep 3, 2006, at 10:52 PM, Steven Corbett wrote:

> Hi,
>
> I noticed that OpenJPA does not recognize certain extensions  
> documented in
> the dev guide. Specifically, the '@ElementColumn',  
> '@ElementEmbeddedColumn'
> and '@ElementStrategy' are not recognized. I discovered this while  
> trying
> to use the OpenJPA extensions for collections of value/embedded  
> types. A
> quick grep through the code base confirmed this.
>
> I'm not sure if the code is incomplete or the dev guide is out-of- 
> date.
> Does anyone know which one is the case? I know these features are  
> present
> in Kodo, I am just unsure that they were carried over to OpenJPA.
>
> Regards,
> Steve
>

Re: OpenJPA missing extensions

[Marc Prud'hommeaux <mp...@apache.org>]

Steven-

On Sep 6, 2006, at 10:09 PM, Steven Corbett wrote:

> Thanks for the update Marc. I take it that OpenJPA will not have the
> facility to map Collections of value or embedded types in the near  
> future
> then?

That is correct ... it is one of the things BEA decided to hold back  
from the contribution.

> Some of the extension annotations are still present (i.e.
> @PersistentCollection/@PersistentMap) yet other annotations such as
> @ElementColumn are gone. In fact its still possible to map sets/ 
> lists using
> @PersistentCollection, however the contents of the collection are  
> mapped as
> a BLOB. I'm not sure about the story - have the differences between  
> OpenJPA
> and Kodo have been quantified or is it too early to make this  
> information
> public?

I don't think there is yet any public list available yet ... I expect  
that something will be published around the time that Kodo 4.1 (which  
will be based on OpenJPA) ships.


> Regards,
> Steve
>
>>
>> Steven-
>>
>> Those were actually some of the mappings that we didn't release to
>> OpenJPA ... we missed removing their mention in the documentation.
>> I've updated the doc source to exclude them.
>

Re: OpenJPA missing extensions

[Steven Corbett <sc...@au1.ibm.com>]

Thanks for the update Marc. I take it that OpenJPA will not have the
facility to map Collections of value or embedded types in the near future
then?

Some of the extension annotations are still present (i.e.
@PersistentCollection/@PersistentMap) yet other annotations such as
@ElementColumn are gone. In fact its still possible to map sets/lists using
@PersistentCollection, however the contents of the collection are mapped as
a BLOB. I'm not sure about the story - have the differences between OpenJPA
and Kodo have been quantified or is it too early to make this information
public?

Regards,
Steve

>
> Steven-
>
> Those were actually some of the mappings that we didn't release to
> OpenJPA ... we missed removing their mention in the documentation.
> I've updated the doc source to exclude them.