XSD Schema : Standard APIs ?

[Simon Fell <xml@zaks.demon.co.uk>]

Hi,

I was chatting to a friend last night about how XSD is used within
SOAP & WSDL, in particular its use as a type system rather than a
validation language. I was wondering if there are any plans to define
a standard API to query/use the type system that a particular XSD
document describes, or will it become purely an implementation issue
within the different XSD tools ?. 
On a related note, is anyone aware of (or plans for) a general purpose
XSD toolkit, all the work i've seen so far for XSD seems to
concentrate on the validation side.

Thanks
Simon
www.pocketsoap.com