http://www.w3.org/Bugs/Public/show_bug.cgi?id=2224 ------- Comment #1 from sandygao@ca.ibm.com 2007-04-20 14:00 ------- This issue involves 2 questions: 1. Do vacuous redefinitions produce the same component as the original? I think the answer is "no" and the spec is very clear about this. "CT" in XSD1 (call it CT-1) has a base type (the one named in is "base" attribute or "anyType"). "CT" in XSD2 (call it CT-2) has CT-1 as its base type. This makes CT-2 a different type from CT-1. Conclusion from this: how redefinition works is not impacted by whether it's vacuous or not. 2. Is it leagal to import both the orignal schema document and a redefintion of it? This is closely related to (and depends on) the question of what "redefinition is pervasive" means (see bug 2330). What's interesting about "import" is that the spec allows processors to "ignore imports for the same namespace but the first one". So a processor can ignore the XSD2 import and only use XSD1. Suggestion: open a new issue to track the "pervasive redefinition" issue; mark this one (and bug 2330 and possible bug 2577) as depending on that new issue, because all those 3 issues are just different symptoms of the same fundamental question.Received on Friday, 20 April 2007 14:00:14 GMT
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