C++ DAS would be a DAS implementation in C++. When I said SDOHelper, I
should have said XMLHelper.

As for XML DAS, you got it right, and as far as I know we don't have anyone
looking into that as of now, at least in the Java side.


- Luciano

On 10/18/06, Geoffrey Winn <[EMAIL PROTECTED]> wrote:

On 18/10/06, Luciano Resende <[EMAIL PROTECTED]> wrote:
>
> Hi Geoff
>
>    I have started creating some project descriptions for the DAS ideas
> listed on the referenced wiki page. Please find my draft at :
>
>
http://wiki.apache.org/ws/Tuscany/TuscanyJava/DAS_Java_Overview/DAS_Subprojects
>
>    Please let me know if you want any specific type of contents to help
> you
> sell the ideas to the university/students.
>
> - Luciano Resende
>
>
Looking at the first item
*
* *C++ DAS*

Today, Tuscany C++ SDO work in conjunction with SDOHelper to map back-end
data representation to Service Data Objects. There is a need for a C++ DAS
implementation that would interop with the C++ SDO and mediate between the
SDO and the back-end store.
Could explain a little more about this? What is the SDOHelper? I'm not
aware
that SDO for C++ has an SDOHelper.

And for the second item

*XML DAS*

Currently, Tuscany DAS only support RDB back-ends, altough the idea is
that
DAS could access and mediate data trough various backends representations,
XML being one of them. This project consists in designing the DAS
implementation over XML, how the commands would be structured (e.g using
XQuery, XPath, etc) and also contribute important feedback to a possible
DAS
spec.
I'd like to check that I understand this correctly. SDO already has an
XMLHelper that will read an XML document and generate a data graph. I
think
you mean a DAS that will selectively read fragments of an XML document and
generate data objects corresponding to those fragments. Is that somewhere
near? If so, I think that's the sort of thing that would work well as a
student project.

Thanks and regards,

Geoff.


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