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   RE: [xml-dev] Is there a way to reuse and extend an enumeration in XML s

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  • To: "William J. Kammerer" <wkammerer@novannet.com>, "XML Developers List" <xml-dev@lists.xml.org>
  • Subject: RE: [xml-dev] Is there a way to reuse and extend an enumeration in XML schema
  • From: "Chiusano Joseph" <chiusano_joseph@bah.com>
  • Date: Sun, 6 Mar 2005 13:08:17 -0500
  • Thread-index: AcUicpZXXpe3v0C0QbizUexMmPX6YwABCK8A
  • Thread-topic: [xml-dev] Is there a way to reuse and extend an enumeration in XML schema

Is there some way that a Web service (REST or SOAP-based) could be available through which all UBL instances could be "filtered" - assuming that the UBL schema that they need to conform to were listed in the "schemaLocation" attribute at the top of the instance document - that would "trick" the instance document into being validated against a broader list of codes than that which is represented in the UBL schema? 

So if the instance document were to include a code that was not listed in the UBL schema as an enumeration - but would really be an extension of such an enumeration - the remote processing could take care of it? Let's assume for our purposes - totally hypothetically - that the Web service would be hosted by OASIS, and the code list extensions would be maintained and available through that Web service. Is that wacky?

Kind Regards,
Joseph Chiusano
Booz Allen Hamilton
Strategy and Technology Consultants to the World
 

> -----Original Message-----
> From: William J. Kammerer [mailto:wkammerer@novannet.com] 
> Sent: Sunday, March 06, 2005 12:30 PM
> To: XML Developers List
> Subject: Re: [xml-dev] Is there a way to reuse and extend an 
> enumeration in XML schema
> 
> I can't speak to Kenneth Stephen's requirements, but I'm 
> pretty sure that UBL wants to give users some way of 
> extending (and restricting) currency codes (inter alia) 
> without modifying any of the distributed UBL schemas.  If 
> such a "feature" requires use of "substitutionGroup," then 
> UBL will consider adding the appropriate infrastructure to 
> the "off-the-shelf" schemas for code lists (e.g., 
> abstract="true").  See 4.6, Code List Schema Usage, in 
> Universal Business Language (UBL) Code List Representation 
> (Version: 1.1 draft 17 January 2005), at 
> http://lists.oasis-open.org/archives/ubl-dev/200502/pdf00000.pdf.
> 
> The UBL schema structure is indeed modular, and business 
> document and core component schemas do reference a separate 
> schema for code lists.
> See the  OASIS Universal Business Language 1.0 page at
> http://docs.oasis-open.org/ubl/cd-UBL-1.0/.   6.3 UBL Code 
> List Schemas
> include not only ISO 4217 currency codes, but also 
> "pre-packaged" code lists for others like the ISO 3166 
> Country codes.  More will follow, and it is a commonly 
> perceived requirement among e-business folks that they will 
> just die if the standard code lists can't be extended to 
> accommodate their special business needs.
> 
> You or anyone else who could proffer an elegant solution to 
> the code list extensibility conundrum would be hailed as a 
> hero in the annals of
> UBL.   John Bosak, chair of the OASIS UBL TC, originally 
> requested help
> on the ubl-dev mailing list, with subsequent follow-up on the 
> "Code list extensibility and substitution groups" and " Code 
> list use case"
> threads.
> 
> See http://lists.oasis-open.org/archives/ubl-dev/200502/msg00006.html
> and http://lists.oasis-open.org/archives/ubl-dev/200503/msg00014.html.
> 
> William J. Kammerer
> Novannet
> Columbus, OH 43221-3859 . USA
> +1 (614) 487-0320
> 
> ----- Original Message -----
> From: "Chiusano Joseph" <chiusano_joseph@bah.com>
> To: "William J. Kammerer" <wkammerer@novannet.com>; "XML 
> Developers List" <xml-dev@lists.xml.org>
> Sent: Sunday, 06 March, 2005 11:47 AM
> Subject: RE: [xml-dev] Is there a way to reuse and extend an 
> enumeration in XML schema
> 
> 
> I took the reference to "without altering the original definition" as
> referring to the definition of the simple type (the "A", "B", and "C"
> choices) - in which case the solution I proposed would meet that
> requirement. But I agree that it is unclear as to whether the original
> poster intended *any* definition, in which case I would ask that they
> clarify.
> 
> Given a situation in where there are existing schemas, I don't see how
> this can be done without changing *some 
> declaration/definition*. If the
> original schemas were written to - for example, somehow 
> reference a URL
> for the code lists, then that would a situation in which it might be
> possible to meet such a requirement without updating changing 
> any parts
> of the existing schemas.
> 
> Kind Regards,
> Joseph Chiusano
> Booz Allen Hamilton
> Strategy and Technology Consultants to the World
> 
> 
> 
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