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RE: [xml-dev] Schema based XML compare


I was thinking about this, does it require a schema-aware parser (say Saxon PE) ?

I would presume so.





David A. Lee




From: Michael Kay [mailto:mike@saxonica.com]
Sent: Thursday, December 23, 2010 11:50 AM
To: xml-dev@lists.xml.org
Subject: Re: [xml-dev] Schema based XML compare


On 23/12/2010 12:29, David Lee wrote:

I've run into an age-old issue but I don’t see any off-the-shelf solutions for.


Suppose I have 2 XML documents I want to compare (not diff, just give me yes/no are they equivalent).

This is pretty simple to do even with things like ignoring whitespace options etc.  Many tools out there, including one I wrote

( http://www.xmlsh.org/CommandXcmp)


Now here's the twist …


Suppose I want to compare for XSD  data model equivalence, not XDM  equivalence ?








Without type annotation these are different.
But if I declare the type for number to  be xs:double

they should compare equal.



The XPath 2.0 deep-equal() function appears to do what you want here: it compares the typed values of the elements rather than their string values.

Michael Kay

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