5199 2007-10-15 17:16:47 +0000 Restrict scope of xs:alternative xpath expressions 2007-10-16 16:25:41 +0000 1 1 1 Unclassified XML Schema Structures: XSD Part 1 1.1 only PC Windows XP CLOSED INVALID P2 normal --- 1 petexmldev cmsmcq www-xml-schema-comments oldest_to_newest 17214 0 petexmldev 2007-10-15 17:16:47 +0000 As currently drafted, databinding tools (and possibly streaming validating XML processors) will find selecting a type based on the contents of that type (as required by xs:alternative) difficult to implement. It is proposed that the xpath expressions in xs:alternative tests only rely on the attributes of an element. 17216 1 mike 2007-10-15 17:45:28 +0000 Personal response: I believe that what you are asking for is already the case. See 3.12.4 rules 1 and 2. 17218 2 petexmldev 2007-10-15 19:13:38 +0000 Thanks for pointing that out. That seems OK. 17238 3 noah_mendelsohn 2007-10-16 16:25:41 +0000 Pete Cordell writes: > It is proposed that the xpath expressions > in xs:alternative tests only rely on > the attributes of an element. Michael Kay writes: > Personal response: I believe that what > you are asking for is already the case. > See 3.12.4 rules 1 and 2. Pete Cordell writes: > Thanks for pointing that out. That seems > OK. Pete: this is actually a very useful comment. Making the decision on how to restrict the XPath expressions, and indeed whether to limit them at all, was very controversial in the workgroup. Getting feedback from users that having them unrestricted would have been a problem, and that you are pleased with the design as proposed, is in fact particularly useful. Thank you! Noah