W3C home > Mailing lists > Public > xmlschema-dev@w3.org > February 2011

Re: extending namespaces

From: XMLSchema at XML4Pharma <XMLSchema@XML4Pharma.com>
Date: Mon, 28 Feb 2011 10:34:20 +0100
Message-ID: <10CA229D97B5478BB3AD1893A3D2E32E@D6NXTQ1J>
To: "Andrew Leslie" <info@structuredinformation.co.uk>, <xmlschema-dev@w3.org>
You may have a look at the CDISC ODM standard (www.cdisc.org/odm), of which I am one of the authors.
It is an XML-based standard that explicitely allows schema extensions (so-called "vendor extensions") using the "xsd:redefine" mechanism.
When adding extensions there, it is not necessary to edit the core schema itself.

If you want, I can send you some sample files later.

Best regards,

Jozef Aerts
  ----- Original Message ----- 
  From: Andrew Leslie 
  To: xmlschema-dev@w3.org 
  Sent: Monday, February 28, 2011 10:23 AM
  Subject: extending namespaces



  Rather than modifying a schema directly, I would like to explore the options of utilizing namespace extensions.

  One suggestion is to extend the namespace to include an extra xsd with certain elements declared and then call this from the parent  xsd.


  However, this is all well and good until a certain element is actually inserted, as all the namespace attributes are inserted with it.

  Similar to the S1000D  xlink (eg: <arc xmlns="http://www.w3.org/1999/xlink" xmlns:ns1="http://www.w3.org/1999/xlink" ns1:type="1" ns1:from="1" ns1:to="5"/>

              <arc xmlns="http://www.w3.org/1999/xlink"/>)


  Do you know of any way the schema or even the data in fact can be extended so that these certain elements can be inserted without the namespaces appearing within the attributes ?

  OR is the only  method to modify the schema directly ?








  Andrew Leslie


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Received on Monday, 28 February 2011 09:35:02 UTC

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