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Subject: Re: [ubl] Namespace URI string implications
Hello thank you for the answer,
I am sorry when I assert something or make a questions please understand I
could miss something from past discussions, I am new to this.
I think the namespaceURI is the right way to identify a new version or a
new information item, but about keeping the documentElement namespaceURI
across UBL versions I get a little worried.
The filter-before-validation is a good solution to let the previous scene
work but I understand it works on new items only, what about overridden
ones (changed version) ?
I understand that an UBL cross-version compatibility could be nice the
price should not be the complexity.
I remember UBL promise is to be a simpler, stronger solution than past B2B
standards, I think complexity could exclude both little softwarehouses and
customers.
I still think the best way is to give the instruments to easyly upgrade
UBL versions (XSLT) and have a precise namespaceURI for each document.
When business partners agreements are configured with a precise UBL
version why they have to change ? They should upgrate both to a newer
version I think.
Thank you, it is just my opinion.
Best regards
UBL ITLSC
Chair
Roberto Cisternino
> At 2006-06-06 11:43 +0200, roberto@javest.com wrote:
>>my name is Roberto Cisternino (ITLSC chair).
>>I woult like to give my opinion about this matter.
>
> Thank you!
>
>>One of the main reasons UBL is better than past EDI formats is the
>>validation which is made possible using a precise WXS Schema based on
>>unique namespaces aware of UBL versions.
>>
>>e.g. urn:oasis:names:specification:ubl:schema:xsd:Invoice-1.0
>>
>>I think an UBL document "instance" should be based on a precise namespace
>>URI, then inside the schema there could be a sofisticated re-use of
>>components by choosing from 1 or more component collections still
>>versioned and identified by a precise namespaceURI.
>
> Do you have a comment regarding only using a new precise namespace
> for those information items that are subsequently added to a document
> model?
>
>>In a different way I think it could be hard or impossible to make generic
>>software able to deal with different UBL versions and to transform them
>>successfully in case of a technology update.
>
> I have done this in a complete stylesheet of fifteen XSLT
> instructions (which includes error checking!). An example is in the
> paper I am preparing.
>
>>Maybe there could be a sort of deprecation system, this way an UBL 2.0
>>interface could be able to read UBL 1.0 automatically by following
>>deprecation instructions... just an idea (could be heavy)
>
> I believe it would not be heavy if we base the deprecation on the
> simple concept of the namespace of an information item.
>
>>We had versions using EDIFact or X12 but the translation between versions
>>was hard as documents were often invalid.
>
> I believe this would not be the case for namespace-based processing.
>
>>XSLT transformation is a possibility, but maybe a free UBL update service
>>(web service) could be a "must".
>
> I'm glad you would be willing to consider XSLT and I hope that you
> find the descriptions in my paper of value. The filtering stylesheet
> would be supplied by UBL as part of a support package or even along
> with the schemas. More detail is coming in the paper.
>
> . . . . . . . . . . . Ken
>
> --
> Registration open for XSLT/XSL-FO training: Wash.,DC 2006-06-12/16
> Also for XSL-FO/XSLT/XML training: Birmingham, UK 2006-07-04/13
> Also for XSL-FO/XSLT training: Minneapolis, MN 2006-07-31/08-04
> Also for XML/XSLT/XSL-FO/UBL training: Varo,Denmark 06-09-25/10-06
> World-wide corporate, govt. & user group UBL, XSL, & XML training.
> G. Ken Holman mailto:gkholman@CraneSoftwrights.com
> Crane Softwrights Ltd. http://www.CraneSoftwrights.com/o/
> Box 266, Kars, Ontario CANADA K0A-2E0 +1(613)489-0999 (F:-0995)
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>
>
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Roberto Cisternino
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