- From: <bugzilla@wiggum.w3.org>
- Date: Fri, 13 May 2005 17:14:04 +0000
- To: public-qt-comments@w3.org
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http://www.w3.org/Bugs/Public/show_bug.cgi?id=1401 Summary: Use substitution groups to improve usability Product: XPath / XQuery / XSLT Version: Last Call drafts Platform: PC OS/Version: Windows 2000 Status: NEW Severity: normal Priority: P2 Component: XQueryX AssignedTo: jim.melton@acm.org ReportedBy: holstege@mathling.com QAContact: public-qt-comments@w3.org Use substitutionGroups to make the syntax easier to work with both with respect to selectors, by eliminating need for xsi:type, nd for humans. There are three places in the existing schema where this might apply: (1) For expressions, to eliminate the need for xsi:type This is largely a matter of turning named complex types into elements. See xqx.newschema1.xsd and xq.ex1.xml (2) For steps in path expressions. This amounts to converting the simple type enumeration into a collection of elements. See xqx.newschema2.xsd and xq.ex2.xml (3) For operators. This involves converting some types to elements and various enumerations to elements. Since some of the operator names are non valid as element names, names need to be created for these cases. See xqx.newschema3.xsd and xq.ex3.xml (1) and (2) aren't necessary to get rid of xsi:type, but they do provide for a more direct syntax. One could go even further on (c) and put the operators into the "op:" namespace:, which might assist in automatic mapping from XQuery grammar. See schemas and examples at http://lists.w3.org/Archives/Member/w3c-archive/ 2005May/0068.html
Received on Friday, 13 May 2005 17:14:18 UTC