Re: [xml-dev] Designing for extensibility using namespaces and schemas... and validating

Your design is perfectly sensible, but your instance has three typos
in it which make it not work.  If you correct those, it's fine.

As you sent it:

<c:Collection xmlns:c="urn:xmlns:test:collection"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="urn:xmlns:test:collection Collection.xsd">
	<p1:Part1 part1Attr="p1a" xmlns:p1="urn:xmlns:test:p1"
                                                           xx
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="urn:xmlns:test:part1 Part1.xsd"/>
	<p2:Part2 part2Attr="p2a" xmlns:p2="urn:xmlns:test:p2"
                                                           xx
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="urn:xmlns:test:part1 Part2.xsd"/>
                                   xxxxx
</c:Collection>

Corrected:

<c:Collection xmlns:c="urn:xmlns:test:collection"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="urn:xmlns:test:collection Collection.xsd">
	<p1:Part1 part1Attr="p1a" xmlns:p1="urn:xmlns:test:part1"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="urn:xmlns:test:part1 Part1.xsd"/>
	<p2:Part2 part2Attr="p2a" xmlns:p2="urn:xmlns:test:part2"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="urn:xmlns:test:part2 Part2.xsd"/>
</c:Collection>

-- 
  Henry S. Thompson, HCRC Language Technology Group, University of Edinburgh
                      Half-time member of W3C Team
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