Hi Yasir,
The error XPST0051 is correct: If an item type is specified along with
“instance of”, its expanded QName must be defined as a generalized
atomic type (i.e., either an atomic type or a pure union type) [1].
Hope this helps,
Christian
[1] https://www.w3.org/TR/xquery-31/#id-matching-item
On Fri, Jul 10, 2020 at 4:23 PM Yasir B wrote:
>
> Hello,
>
> I ran the following query using BaseX 9.3.3 command-line client:
> 'hello' instance of xs:anyAtomicType
> the result of the query is `true`.
>
> But if I run this query:
> 'hello' instance of xs:anySimpleType
> an error "[XPST0051] Unknown type: xs:anySimpleType" is returned
>
> Similarly, for the query:
> 'hello' instance of xs:anyType
> an error "[XPST0051] Unknown type: xs:anyType" is returned
>
> Should xs:anySimpleType and xs:anyType be recognized?
>
> Thank you,
> Yasir
