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From Milinda Pathirage <milinda.pathir...@gmail.com>
Subject Re: OSGi Aware Persistence Provider implementation
Date Fri, 30 Oct 2009 02:50:07 GMT
Hi Donald,

Thanks for the tips.

Milinda

On Fri, Oct 30, 2009 at 2:19 AM, Donald Woods <dwoods@apache.org> wrote:

> There is also the Aries project over in the Apache Incubator, which is
> proposing to develop several of the upcoming OSGi JavaEE RFCs, along with
> the Blueprint application environment.  I'm hoping that some of the RFC 143
> work is already done by that project and just waiting on the early access
> OSGi specs to be released before they can bring it into their svn repo and
> share it with us....
>
> http://incubator.apache.org/projects/aries.html
>
>
> -Donald
>
>
>
> Milinda Pathirage wrote:
>
>> Thanks Kevin for your answers. I'm using OpenJPA in Apache ODE which runs
>> in
>> a OSGi environment(WSO2 Carbon platform). I tried OpenJPA 2.0, but there
>> were some issues with ODE's JPA queries. I'll try to port current
>> implementation to work with OpenJPA 2.0. I also think that it's better if
>> we
>> can add OSGi support for OpenJPA 2.0 because I saw there are fixes in
>> Geranimo JPA spec jar for OSGi related issues. I'll create a patch for
>> OSGi
>> related class loading issues and attach it to a JIRA.
>>
>> Thanks in advance,
>> Milinda
>>
>>
>> On Thu, Oct 29, 2009 at 10:51 PM, Kevin Sutter <kwsutter@gmail.com>
>> wrote:
>>
>>  Hi Milinda,
>>> Yes, there is some interest in allowing OpenJPA usage in an OSGi
>>> container
>>> environment.  It's just not a "full time job" for any of us at the
>>> moment...
>>>
>>> Porting the JDK 6 changes back to the 1.3.x release might cause some
>>> concern
>>> for those users of the 1.3.x branch.  Many of the changes would now
>>> require
>>> the use of JDK 6 and we didn't want to force this onto the JPA 1.0 usage
>>> community.  Thus, we limited the change to trunk for our JPA 2.0
>>> development
>>> [1].
>>>
>>> Is there any reason why your experimentation and changes couldn't be
>>> targeted for the JPA 2.0 implementation?  I think you will find our
>>> current
>>> M3 driver is quite solid, especially as it pertains to existing JPA 1.0
>>> functionality.  Thus, any current JPA 1.0 applications should run
>>> unchanged
>>> with a JPA 2.0 driver.
>>>
>>> Thanks,
>>> Kevin
>>>
>>> [1]
>>>
>>>
>>> http://n2.nabble.com/DISCUSS-Drop-build-support-for-Java-5-td2539470i20.html#a3554445
>>>
>>>
>>> On Thu, Oct 29, 2009 at 4:49 AM, Milinda Pathirage <
>>> milinda.pathirage@gmail.com> wrote:
>>>
>>>  Hi all,
>>>> I have another question. Is there any plan for fixing OpenJPA 1.3.x
>>>> compilation failures in JDK 1.6
>>>>
>>>> Thanks
>>>> Milinda
>>>>
>>>> On Thu, Oct 29, 2009 at 3:00 PM, Milinda Pathirage <
>>>> milinda.pathirage@gmail.com> wrote:
>>>>
>>>>  We are currently using OpenJPA 1.1.0 in equinox OSGi container by
>>>>>
>>>> making
>>>
>>>> it
>>>>
>>>>> a fragment of the bundle which use it to fix the issue of loading
>>>>> persistence.xml. Now we want to use OpenJPA in two different OSGi
>>>>>
>>>> bundles
>>>
>>>> and fragment hack will not work in this situation. Current 1.3.x
>>>>>
>>>> OpenJPA
>>>
>>>> implementation also doesn't support OSGi aware resource loading. We can
>>>>>
>>>> fix
>>>>
>>>>> this by following the method use by Eclipselink. In this method what
we
>>>>>
>>>> have
>>>>
>>>>> to do is implement a OSGi aware Persistence Provider by extending the
>>>>> current Persistence Provider implementation and introduce bundle
>>>>>
>>>> activator
>>>>
>>>>> to register persistence provider service at bundle activation. This
>>>>>
>>>> will
>>>
>>>> not
>>>>
>>>>> break the existing functionality of OpenJPA in J2SE environment and
>>>>>
>>>> improve
>>>>
>>>>> the support for OSGi containers.
>>>>>
>>>>> Are there any plans to add OSGi support, if there any I would like to
>>>>>
>>>> help.
>>>>
>>>>> I'll provide a patch ASAP for this.
>>>>>
>>>>> Thanks
>>>>> Milinda
>>>>>
>>>>> --
>>>>> Milinda Pathirage
>>>>> Senior Software Engineer & Product Manager WSO2 BPS;
>>>>>
>>>> http://wso2.org/bps
>>>
>>>> WSO2 Inc.; http://wso2.com
>>>>> E-mail: milinda@wso2.com, milinda.pathirage@gmail.com
>>>>> Web: http://mpathirage.com
>>>>> Blog: http://blog.mpathirage.com
>>>>>
>>>>>
>>>>
>>>> --
>>>> Milinda Pathirage
>>>> Senior Software Engineer & Product Manager WSO2 BPS;
>>>> http://wso2.org/bps
>>>> WSO2 <http://wso2.org/bps%0AWSO2> Inc.; http://wso2.com
>>>> E-mail: milinda@wso2.com, milinda.pathirage@gmail.com
>>>> Web: http://mpathirage.com
>>>> Blog: http://blog.mpathirage.com
>>>>
>>>>
>>
>>
>>


-- 
Milinda Pathirage
Senior Software Engineer & Product Manager WSO2 BPS; http://wso2.org/bps
WSO2 Inc.; http://wso2.com
E-mail: milinda@wso2.com, milinda.pathirage@gmail.com
Web: http://mpathirage.com
Blog: http://blog.mpathirage.com

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