Adding XML Schema validation (XMLVALIDATE)

Hi,

I'm going to start work on another XML todo item:

"Add XML Schema validation and xmlvalidate function (SQL:2008)"

The standard identifies XMLVALIDATE as:

<XML validate> ::=   XMLVALIDATE <left paren>      <document or content or sequence>      <XML value expression>      [
<XMLvalid according to clause>]      <right paren>
 

so I've got something quite clear to work too. libxml has the required 
support for schema validation so I'll just be wrapping it's 
functionality much like I did for xpath_exists().

Anyone got any thoughts before I get busy?

Thanks,

-- 
Mike Fowler
Registered Linux user: 379787