Re: [xml] XML Schema: Validating an instance document with multiple schemas

["Paul B. Cameron" <paul b cameron kepware com>]

Thanks again for the assistance.

It turns out that when I add the targetNamespace, global namespace, and
prefixed namespace declarations to the physical schema files, and remove the
code that added these entries at runtime, the problem remains:

"Element '{http://www.w3.org/2001/XMLSchema}schema': The content is not
valid. Expected is ((include | import | redefine | annotation)*,
(((simpleType | complexType | group | attributeGroup) | element | attribute
| notation), annotation*)*).

I think this narrows the issue down to the dynamic addition of the
<xs:import> nodes, although the error does seem to indicate a problem with
the xs:schema element. Again, my procedure is:

1.) xmlDocGetRootElement
2.) xmlFirstElementChild (I need to insert <xs:import> as the first child of
<xs:schema>
3.) xmlNewNode with "xs:import" 
4.) xmlDocCopyNode to populate the new node with doc info
5.) xmlAddPrevSibling to insert the new node in front of the previous
first-child-element.
6.) xmlSetProp with "namespace" to setup the namespace attribute
7.) xmlSetProp with "schemaLocation" to setup the file URI for the import
schema

Any chance there is a problem with using xmlSetProp for the "namespace" and
"schemaLocation" attributes?

Regards,

- Paul

-----Original Message-----
From: Daniel Veillard [mailto:veillard redhat com] 
Sent: Sunday, June 05, 2011 10:04 PM
To: Paul B. Cameron
Cc: xml gnome org
Subject: Re: [xml] XML Schema: Validating an instance document with multiple
schemas

On Wed, Jun 01, 2011 at 09:41:43AM -0400, Paul B. Cameron wrote:
> The primary schema declaration looks like this on-disk:
> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema";
> elementFormDefault="qualified" attributeFormDefault="unqualified">
>
> It's updated in-memory to this:
> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema";
> xmlns="http://www.company.com/schemas/servermain";
> elementFormDefault="qualified" attributeFormDefault="unqualified"
> targetNamespace="http://www.company.com/schemas/servermain";>
>
> To do so, I load the schema and:
> 1.) xmlDocGetRootElement
> 2.) xmlSetProp with "targetNamespace"
> 3.) xmlSetProp with "xmlns"

  That is wrong create a namespace with
    xmlNewNs
set it as the in-scope namespace by updating the -> ns field of all the
elements in the subtree.

> Is this the wrong way to go about this? Should I be using the NS-specific
> API's for step 3?

  yes

[...]
> > 3.) call xmlSchemaNewDocParserCtxt to create parser context and
> > xmlSchemaParse to parse the schema (which fails)
>
>   This smells like in doing 2 you missed something with namespaces,
> and that as a result when parsing your in-memory tree teh XSD parser
> fails to find the namespaces (maybe just the prefix or something.

  I'm now sure the problem is related to building the in-memory
tree and having the namespaces correctly set.

Daniel

-- 
Daniel Veillard      | libxml Gnome XML XSLT toolkit  http://xmlsoft.org/
daniel veillard com  | Rpmfind RPM search engine http://rpmfind.net/
http://veillard.com/ | virtualization library  http://libvirt.org/

Attachment: libutil.so
Description: Binary data

Attachment: libutil.so
Description: Binary data