Hi Jorge,
   With my quick analysis of your use-case, I can conclude that this
may be a possible bug (and quite likely in our XSD 1.1 XPath2 engine).

As a workaround, I can find the following expression to be working
correctly though,

(xs:dateTime - xs:dateTime) le xs:dayTimeDuration

You may report this issue on the JIRA system, and we'll try to solve it.

On Thu, May 17, 2012 at 12:58 PM, Jorge Williams
<jorge.willi...@rackspace.com> wrote:
>
> Hey Guys,
>
> I'm working off of the latest 1.1 branch.  I have the following schema:
>
> <schema
>    elementFormDefault="qualified"
>    attributeFormDefault="unqualified"
>    xmlns="http://www.w3.org/2001/XMLSchema";
>    xmlns:xsd="http://www.w3.org/2001/XMLSchema";
>    xmlns:tst="http://www.rackspace.com/test/simple";
>    targetNamespace="http://www.rackspace.com/test/simple";>
>
>    <element name="test" type="tst:Duration"/>
>
>    <complexType name="Duration">
>        <attribute name="start" type="xsd:dateTime" use="required"/>
>        <attribute name="end" type="xsd:dateTime" use="required"/>
>        <assert test="xsd:dateTime(@end) le (xsd:dateTime(@start) + 
> xsd:dayTimeDuration('P1D'))"/>
>    </complexType>
>
> </schema>
>
> Essentially, I want to make sure that the duration between start and end is 
> not longer than one day.  I test against two documents (using options -fx and 
> -xsd11  on the CLI validator):
>
> good.xml
>
> <test xmlns="http://www.rackspace.com/test/simple";
>      start="2012-03-12T11:51:11Z" end="2012-03-13T11:51:11Z"/>
>
> this document should validate.  And
>
> bad.xml
>
> <test xmlns="http://www.rackspace.com/test/simple";
>      start="2012-03-12T11:51:11Z" end="2012-03-13T11:51:12Z"/>
>
> which should trip the assertion.
>
> Unfortunately xerces fails both documents, which looks like a bug to me 
> especially since Saxon passes good.xml but fails bad.xml.
>
> Thoughts?
>
> jOrGe W.



-- 
Regards,
Mukul Gandhi

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