Re: [xml] including and importing schemas

["Allison Bloodworth" <abloodworth berkeley edu>]

We had a similar problem when we used xs:redefines in our schema, but the
version of libxml2 we are using is more than a year old. Haven't had a
chance to test with the latest version yet, but will soon. 

http://mail.gnome.org/archives/xml/2006-October/msg00053.html

Allison

-----Original Message-----
From: xml-bounces gnome org [mailto:xml-bounces gnome org] On Behalf Of
Daniel Veillard
Sent: Wednesday, January 10, 2007 8:41 AM
To: Luigi Selmi
Cc: xml gnome org
Subject: Re: [xml] including and importing schemas

On Wed, Jan 10, 2007 at 04:55:23PM +0100, Luigi Selmi wrote:
> Hi All,
> we are using libxml2 in order to validate our xml schemas. The xsd files 
> are organized as stated in the following:
>
>   * RichiestaSAIA.xsd (targetNamespacePrefix: ap5) includes 
> ComAnagTypes.xsd and imports RichiestaAPR4.xsd
>   * ComAnagTypes (targetNamespacePrefix: ap5) includes 
> RichiestaMacroTypes.xsd
>   * RichiestaMacroTypes.xsd (targetNamespacePrefix: ap5) includes 
> BaseTypes.xsd
>   * RichiestaAPR4.xsd (targetNamespacePrefix: apr4) imports BaseTypes.xsd
>
> A picture of the schemas structure has been attached. The libxml2 
> validation function reports the following error:
>
> /Warning: DOMDocument::schemaValidate(): Element 
> '{http://www.w3.org/2001/XMLSchema}import': The schema document 
> 'BaseTypes.xsd' cannot be imported, since it was already included or 
> redefined. /
>
> All the other validation tools, W3C Schema validation service, XMLSpy, 
> XML-Beans, validate the schemas without reporting any error or warning. 
> Can anyone suggest an explanation for this problem ? Thanks in advance.

  That could be a bug ... or not. Use the latest release,

Daniel

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