Re: [dali-dev] Dali 2.2 Project Plan available

[Leonard Theivendra <theivend@xxxxxxxxxx>]

Hi Neil, please see 
http://www.eclipse.org/newsportal/article.php?id=661&group=eclipse.technology.dali#661




Neil Hauge <neil.hauge@xxxxxxxxxx> 
Sent by: dali-dev-bounces@xxxxxxxxxxx
01/20/2009 02:02 PM
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Re: [dali-dev] Dali 2.2 Project Plan available






Hi Len,

This has been a complicated issue and one that is not fully resolved. 
The short answer to your question is that that this bug is specific to 
EclipseLink, and that there currently isn't any support or tolerance 
planned for JPA 2.0 in Dali 2.2.  The current Generic platform could 
give erroneous error messages if used with JPA 2.0 metadata.  The "JPA 
2.0 tolerance" enhancement that you mentioned does not accurately 
describe its purpose and it should be renamed.

The JPA 2.0 support being worked on for EclipseLink is "preview" 
support, and does not necessarily reflect what JPA 2.0 will eventually 
be when it is completed.  The reason we have decided to include this 
support for the EclipseLink platform is because EclipseLink 1.1 will be 
final in early February, and is already in a functional freeze.  As a 
result, we can specifically support these JPA 2.0 preview features in 
1.1, since we know they won't be changing for the 1.1 platform.  Since 
this is preview, we do not intend to create a JPA 2.0 facet in Dali 
2.2.  As a result, the JPA 2.0 tolerance in the EclipseLink 1.1 platform 
will be for the purpose of EclipseLink 1.1, but wouldn't necessarily 
apply to other JPA 2.0 platforms.

The difficulty with supporting/tolerating JPA 2.0 (in a non-preview, 
generic fashion) in Dali 2.2 is that the spec has not yet been finalized 
and likely won't be for several months, and at this moment we only have 
7 weeks of development time left before the our functional freeze.  The 
only possibility of Generic 2.0 support that I can envision for Dali 2.2 
would involve creating a JPA 2.0 facet and a Generic 2.0 platform, and 
that platform consisting of a resource model, with no validation or 
context.  This would be similar to JEE 6 tolerance support provided by 
other WTP projects.  Even then, this would be difficult given the 
limited time, and may turn out to be inaccurate. 

We will continue to look at the possibility of this type of support for 
Dali 2.2, and as always, any feedback or help is welcome.

Neil


Leonard Theivendra wrote:
> Hi Neil, I see JPA 2.0 tolerance listed as a committed item. Is this 
> specific to EclipseLink only or can it be made to apply to generic JPA 
> too? I'm trying to understand if there's any support or tolerance 
planned 
> for JPA 2.0 in Dali 2.2. i.e. could the generic JPA tools in Dali 2.2 
get 
> in the way of JPA 2.0?
>
> Thanks,
> Len.
>
> ------------------------------------------
> Leonard Theivendra
> Websphere / IBM Software Solutions Toronto
> email: theivend@xxxxxxxxxx
> tel: (905) 413-3777  tie: 969-3777
> fax: (905) 413-4920
>
>
>
>
>
> Neil Hauge <neil.hauge@xxxxxxxxxx> 
> Sent by: dali-dev-bounces@xxxxxxxxxxx
> 01/15/2009 04:45 PM
> Please respond to
> "General Dali EJB ORM developer discussion." <dali-dev@xxxxxxxxxxx>
>
>
> To
> "General Dali EJB ORM developer discussion." <dali-dev@xxxxxxxxxxx>
> cc
>
> Subject
> [dali-dev] Dali 2.2 Project Plan available
>
>
>
>
>
>
> The Dali 2.2 project plan is available in the standardized format:
>
> http://www.eclipse.org/projects/project-plan.php?projectid=webtools.dali
>
> The feature backlog has also been updated:
>
> http://wiki.eclipse.org/Dali_feature_backlog_post_2.0
>
> Let me know if you have any comments or questions,
>
> Neil
>
>
>
>
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