4565 2007-05-17 16:57:41 +0000 Default attribute values not always applied 2009-04-21 19:21:46 +0000 1 1 1 Unclassified XML Schema Structures: XSD Part 1 1.0/1.1 both All All CLOSED FIXED resolved P2 normal --- 1 sandygao cmsmcq www-xml-schema-comments oldest_to_newest 15110 0 sandygao 2007-05-17 16:57:41 +0000 Section 3.4.5 of the structures spec currently reads "For each attribute use in the {attribute uses} whose {required} is false and whose {value constraint} is not ·absent· ..." Consider a global attribute declaration: <attribute name="a" default="xyz"/> And a reference to this global declaration: <attribute ref="a"/> In this case, the attribute declaration has a default value, but the reference (hence the attribute use) doesn't. Strictly following 3.4.5, "xyz" is *not* applied when "a" is missing in the instance. Intended? Shouldn't 3.4.5 refer to the "effective value constraint" as opposed to "whose {value constraint}"? 15203 1 sandygao 2007-05-25 13:41:50 +0000 Discussed at 2007-05-18 telecon. Adopted the following proposal. - When applying default attributes, look at {value constraint} of both the attribute use and its attribute declaration (by referring to the "effective value constraint" term).