Altova Mailing List Archives

RE: [xml-dev] The prefix "fgdc" for element "fgdc:fgdc" is not bound

From: "Nassar, Anthony" <ANassar@----.--->
To: <xml-dev@-----.---.--->
Date: 12/12/2007 3:59:00 PM
I'm pretty sure that this has been explained to numerous newbies, but I
have to ask again. I've been asked to "do something" about the Nunit
test results schema, which starts out like this:

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs=""
  <xs:complexType name="failureType">

What I understood Dr. Kay to be saying in other postings was that types
*can't* be declared in the NsTDNSIN. An old bug report in the Nunit bug
database complains that when the schema is loaded into an XML editor (in
particular Visual Studio 2003), it doesn't seem aware of the types
declared there, and doesn't recognize them in an nunit-test-results.xml
file. I interpreted this to mean that the schema's declarations are
basically thrown away, because it doesn't specify a namespace for them. 

For what it's worth, Visual Studio 2005 does recognize the declared
types; I interpreted this as Visual Studio's free gift to lousy XML, and
not as required behavior. 

What it comes down to is that there's no way of fixing Nunit's schema
without breaking it: I can't add a namespace declaration at this point
without breaking any non-schema-aware code that plenty of users have
probably written (in particular, XSLTs that turn the test results into
HTML), and if I want to process this XML in a schema-aware way, I'll
have to tell the parser, "Hey, '' really means 'urn:nunit:org'!". 

Could I ask that any misunderstandings on my part be corrected? I'm
trying to get this right without causing lots of trouble for a large
user base. 

-----Original Message-----
From: Michael Kay [mailto:mike@s...] 
Sent: Tuesday, December 11, 2007 1:26 PM
To: 'Anne Thomas Manes'; 'Timothy Lepczyk'
Cc: xml-dev@l...
Subject: RE: [xml-dev] The prefix "fgdc" for element "fgdc:fgdc" is not

> or if you prefer to make it clear to readers of the document that 
> these elements come from the FDGC metadata standard, you can assign 
> the fdgc prefix to no namespace:
>           <fgdc:metadata xmlns:fgdc="">
>              ...
>           </fgdc:metadata>

Sadly, no. XML Namespaces 1.1 allows the syntax xmlns:fgdc="", but it
doesn't bind the prefix fgdc to the
rather it makes the fgdc prefix unavailable for use.

Michael Kay


These Archives are provided for informational purposes only and have been generated directly from the Altova mailing list archive system and are comprised of the lists set forth on Therefore, Altova does not warrant or guarantee the accuracy, reliability, completeness, usefulness, non-infringement of intellectual property rights, or quality of any content on the Altova Mailing List Archive(s), regardless of who originates that content. You expressly understand and agree that you bear all risks associated with using or relying on that content. Altova will not be liable or responsible in any way for any content posted including, but not limited to, any errors or omissions in content, or for any losses or damage of any kind incurred as a result of the use of or reliance on any content. This disclaimer and limitation on liability is in addition to the disclaimers and limitations contained in the Website Terms of Use and elsewhere on the site.