How to specify LRS in orm.xml?

[Christopher Giblin <CG...@zurich.ibm.com>]

Hi
The OpenJPA describes how to indicate that a field should use OpenJPA's
large result set proxies using the @LRS Java annotation.

Can I specify LRS using orm.xml instead?

Thanks,chris

Re: How to specify LRS in orm.xml?

[Pinaki Poddar <pp...@apache.org>]

Hi,
> Why not define a separate OpenJPA XML schema? Then declare its namespace
> in
> orm.xml and one can use JPA and custom elements in the same document. 

  Yes that is a possibility. And this idea looks like a neat one. 

This limitation to translate OpenJPA-specific source code annotations to XML
descriptors has been a long-standing issue [1]. Patrick commented way back
in April 2008: "Hopefully, we can get this into JPA 2.0." -- but that hope
is not yet realized.

  May be someone will volunteer to contribute...

[1] https://issues.apache.org/jira/browse/OPENJPA-125


Christopher Giblin wrote:
> 
> Hi Pinaki,
> Thanks for the quick response.
> 
> Why not define a separate OpenJPA XML schema? Then declare its namespace
> in
> orm.xml and one can use JPA and custom elements in the same document. The
> original JPA schema is untouched.
> 
> -chris
> 
>> Hi,
>> Any OpenJPA specific annotations are, unfortunately, not supported in XML
>> descriptor. Because, JPA spec does not define a XML schema with a simple
>> <name,value> mechanism for vendor extensions. OpenJPA can merge source
> code
>> annotations with orm.xml -- so, one has to leave OpenJPA-specific mapping
>> annotations on source code itself.
>>
>>
>> Christopher Giblin wrote:
>> > Hi
>> > The OpenJPA describes how to indicate that a field should use OpenJPA's
>> > large result set proxies using the @LRS Java annotation.
>> >
>> > Can I specify LRS using orm.xml instead?
>> >
>> > Thanks,chris
> 
> 
> 


-----
Pinaki 
-- 
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Re: How to specify LRS in orm.xml?

[Christopher Giblin <CG...@zurich.ibm.com>]

Hi Pinaki,
Thanks for the quick response.

Why not define a separate OpenJPA XML schema? Then declare its namespace in
orm.xml and one can use JPA and custom elements in the same document. The
original JPA schema is untouched.

-chris

> Hi,
> Any OpenJPA specific annotations are, unfortunately, not supported in XML
> descriptor. Because, JPA spec does not define a XML schema with a simple
> <name,value> mechanism for vendor extensions. OpenJPA can merge source
code
> annotations with orm.xml -- so, one has to leave OpenJPA-specific mapping
> annotations on source code itself.
>
>
> Christopher Giblin wrote:
> > Hi
> > The OpenJPA describes how to indicate that a field should use OpenJPA's
> > large result set proxies using the @LRS Java annotation.
> >
> > Can I specify LRS using orm.xml instead?
> >
> > Thanks,chris

Re: How to specify LRS in orm.xml?

[Pinaki Poddar <pp...@apache.org>]

Hi,
Any OpenJPA specific annotations are, unfortunately, not supported in XML
descriptor. Because, JPA spec does not define a XML schema with a simple
<name,value> mechanism for vendor extensions. OpenJPA can merge source code
annotations with orm.xml -- so, one has to leave OpenJPA-specific mapping
annotations on source code itself.


Christopher Giblin wrote:
> 
> 
> Hi
> The OpenJPA describes how to indicate that a field should use OpenJPA's
> large result set proxies using the @LRS Java annotation.
> 
> Can I specify LRS using orm.xml instead?
> 
> Thanks,chris
> 
> 
> 


-----
Pinaki 
-- 
View this message in context: http://n2.nabble.com/How-to-specify-LRS-in-orm-xml-tp4061742p4061808.html
Sent from the OpenJPA Users mailing list archive at Nabble.com.