[wfs-dev] XSD pitfall? (OWS)

[Panagiotis (Peter) A. Vretanos]

Frank.Steggink at bentley.com wrote:
>  
> I've a couple of questions:
> 1) I assume the XSD's are normative, and not the examples, right?

Yes, although the examples should be corrected.  I'll get a corrigendum 
going for that.

> 2) Have others experienced the same problems, while trying to validate 
> the Capabilities document with the XSD's?

There have been some problems identified in the past but the last 
corrigendum was an attempt to correct those problems.

I try to keep track of the errors identified and then generate a 
corrigendum periodically (as time permits)  to correct identified 
problems.  If you have anything specific, let me know.

> 3) What are good strategies when the resulting XML doesn't validate? 

Generally, I copy the offending schema into a local repository (e.g. 
http://www.pvretano.com/schemas), correct it so that my file validates 
and then try to generate a corrigendum to have the problem corrected.

B.T.W.

I was able to get my capabilities document to validate directly from the 
OGC schema repository:

http://www.pvretano.com/cwwfs/cwwfs.cgi?service=WFS&version=1.1.0&request=GetCapabilities

I checked it with XML Spy Enterprise Edition v 2006 rel. 3.

Screen shot at: http://www.pvretano.com/Test/Spy.jpg

If you send me the specific validation problems you have run into, I'll 
try to take a look at them.

Ciao.


> I've been thinking about it, but I would like to hear your 
> opinions. It's not very user friendly to mention that the responses 
> don't validate, so the user can't use the service. In case of GML, it is 
> a bit risky to accept the content, since you don't know what the author 
> means, but with WFS_Capabilities it's pretty clear what every 
> element/attribute means (within reasonable limits).
>  
> While browsing in the WFS 1.1 spec (section 6.6), I also see that the 
> OGC namespaces all have the following format 
> "http://www.opengeospatial.net/<spec_abbr>", but the schemata and all 
> implementations (known to me) use "http://www.opengis.net/<spec_abbr> 
> <http://www.opengis.net/<spec_abbr>>". I've confirmed this with a 
> freshly downloaded PDF of WFS 1.1, in case I missed any updates. The 
> corrigendum 06-027r1 doesn't mention anything about the namespaces.
>  
> Regards,
> 
> Frank Steggink
> Bentley Systems
>  
> 
> 
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-- 
Panagiotis (Peter) A. Vretanos          CubeWerx Inc.
Big Kahuna (Senior Database Developer)  http://www.cubewerx.com
Tel. 416-701-1985 Fax. 416-701-9870     pvretano at cubewerx.com

"If you want to make an apple pie from scratch, you must first
  create the universe." -- Carl Sagan