Re: [sca-j] [JAVA-2] Determining the data binding to use (e.g. JAXB or SDO)

[Raymond Feng <rfeng@us.ibm.com>]

It would be really useful to have an extensible
way to express (or hint) the databinding. There are a few use cases:

1) The java type is not always introspectable
to figure out the underlying databinding, either the java type doesn't
have a unique pattern (for example, SDO can generate plain interfaces)
or the java type can be used to represent different things (for example,
byte[], String, InputStream can have different content types such as XML,
JSON).

2) To work with XML data using dynamic
objects such as DOM Node or SDO DataObject, sometimes we need to provide
additional information, for example, the QName of the element or type.

3) To help the Property type introspection
or value injection from XML, we need to know the databinding for the java
type of the property too.

Thanks,
Raymond

From:	David Booz/Poughkeepsie/IBM@IBMUS
To:	sca-j@lists.oasis-open.org
Date:	02/20/2009 06:09 AM
Subject:	Re: [sca-j] [JAVA-2] Determining the data binding to use (e.g. JAXB or SDO)

---

I don't think that's an acceptable answer. Given that
the application databinding is an open extensibility point in the programming
model, the applications will need a way (a hint maybe) to indicate the
databinding technology they are using (it is not always introspectable).
At the very minimum I think we need an extensibility point analogous to
<wireFormat/>.

If I would have known you were thinking of CNAing this, I would have taken
over the issue to provide a proposal. I guess I now need to come up with
a proposal in the next few days.

Dave Booz
STSM, BPM and SCA Architecture
Co-Chair OASIS SCA-Policy TC and SCA-J TC
"Distributed objects first, then world hunger"
Poughkeepsie, NY (845)-435-6093 or 8-295-6093
e-mail:booz@us.ibm.com

"Pavlov,
Plamen" ---02/20/2009 06:48:15 AM---Hi Folks, Taking into account
the short time frame till the public review and the

From:	"Pavlov, Plamen" <plamen.pavlov@sap.com>
To:	<sca-j@lists.oasis-open.org>
Date:	02/20/2009 06:48 AM
Subject:	[sca-j] [JAVA-2] Determining the data binding to use (e.g. JAXB or SDO)

---

Hi Folks,

Taking into account the short time frame till the public review and the complexity of the topic, the proposal is:

Close current issue with no action and leave the discussion for the next release.

Best Regards,

Plamen

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