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> -----Original Message----- > From: Wayne Steele [mailto:xmlmaster@h...] > Sent: 24 April 2001 20:37 > To: Tony.Coates@r...; xml-dev@l... > Subject: Re: Validation API, was: Regarding the vote on XML Schema. > > > I think this discussion has happened before. > IIRC, the consensus was that more is needed than a 'pluggable validator' > API; each schema technology brings its own infoset contributions. For reference, I covered the recent "Schemarama" discussions in the Deviant column [1]. Francis Norton also recently announced an updated demo of using XSD and Schematron together [2]. Roger Costello's ExtendingSchemas page [3] also covers some related material. [...] > I think people are still trying to narrow down what these 'infoset > contributions' are, and what they look like. Then we can talk about an > architecture for providing them. Well the XSD contributions seem to be the base infoset [4] plus these contributions [5] One question that might be worth considering is: of these contributions which could also be made by DTD/TREX/RELAX validation instead? Another might be: of the proposed revisions to XSLT and XPath which infoset contributions are required? btw. Is there a more formal description of the PSVI in the XSD specs than that given in [5]? [1]. http://www.xml.com/pub/a/2001/02/07/schemarama.html [2]. http://www.geocrawler.com/lists/3/SourceForge/6317/0/5609083/ [3]. http://www.xfront.com/ExtendingSchemas.html [4] http://www.w3.org/TR/xml-infoset/ [5]. http://www.w3.org/TR/xmlschema-1/#PSVI_contributions
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