No: in XQuery 3.0 functions are first-class objects, but types will have
to wait until 4.0.
I've recently designed and implemented an interface to information about
types, presented by means of dynamic functions: see
http://dev.saxonica.com/blog/mike/2012/05/#000190
but oddly, now you mention it, one thing I haven't done is provided an
easy way to test whether an instance matches such a type!
Michael Kay
Saxonica
On 22/06/2012 21:23, David Lee wrote:
I'm 200% sure this doesnt exist but incase I'm off by 2.01x ...
There is no object of type 'type' is there ?
Suppose I wanted to write a function like this
declare function x:check( $expr , $type , $error )
{
if( $expr instance of $type ) then () else $error
};
called like
x:check( "test" , xs:string , "Should be a string" )
No go right ?
Just checking ...
XQuery reflection would be a really nice thing ...
that with XSD querying ...
----------------------------------------
David A. Lee
[email protected] <mailto:[email protected]>
http://www.xmlsh.org
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