Re: [xml] libxml2 does xmlSchemaValidateDoc() support xml schema extensions?

[Andy Davidson <andy_davidson apple com>]

Many thanks Piotr

Happy Holidays

Andy


On Dec 15, 2011, at 7:01 PM, Piotr Sipika wrote:

> Hi Andy,
>
> > I am setting up the xml schema namespace the same way eclipse does when
> > you create a new XSD or XML file. I entered
> > *http://www.w3.org/2001/XMLSchema-instance*in the address bar of my
> > browsers and got quite a surprise!
> The XML Namespace spec(1) states that the namespace URI need not be a
> valid URL (i.e. point to a valid document on the network). In other
> words, you are declaring your namespaces correctly.
>
> > http://www.w3.org/TR/xmlschema-1/#no-xsi is very confusing. 
> If you look at section 3.2.7 (first table) at that location, you'll see
> that using 'xsi:type' is perfectly fine.
>
> > where does libxml get the schema lang schema/dtd? As a test I put some
> > typos in my xsd file. libxml generated an error when I tried to validate
> > the xsd file as expected?
> You don't have to worry about libxml retrieving resources at namespace
> locations, that does not happen. Only the actual URI string matters (as
> per (1)).
>
> > what URL should I be using?
> >
> > Do I need to make a special call to cause the libxml to use this other
> > location?
> Nope, you're using the right URIs, no network access is necessary.
>
> > Would you be willing to send my your sample C program? 
> Sure thing (I should have done so in my original reply).
>
> [] to compile:
> $ gcc `xml2-config --cflags --libs` zoo.c -o zoo
>
> [] sample run:
> $ ./zoo zoo.xml ZooRequest.xsd
> Attempting to validate zoo.xml with ZooRequest.xsd
> Document in zoo.xml is valid
>
> [] contents of zoo.xml:
> $ cat zoo.xml
> <?xml version="1.0" encoding="UTF-8"?>
> <zoo:cageRequest xmlns:zoo="http://www.example.org/Zoo";
>                 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";>
>  <animal xsi:type="zoo:Fish">
>    <name>Blue Fin Tuna</name>
>    <numberOfFins>4</numberOfFins>
>  </animal>
> </zoo:cageRequest>
>
> Hope you get things sorted out.
>
> Piotr
>
>
> (1) - http://www.w3.org/TR/REC-xml-names/#ns-decl
> <zoo.c>