Yes, Zorba's XQSE is not 100% compliant with W3C XQUF.
There is also the W3C XQSE spec (http://www.w3.org/TR/xquery-sx-10/),
but it's only a working draft, which has not been updated for more than
2 years and which is not implemented by anybody (as far as I know).
Nevertheless, W3C XQSE takes the same approach as Zorba's XQSE with
regard to the issue raised by this bug. Read section 2.4:
"2.4 Updating Expression Constraints
XQSX relaxes the constraints on the placement of updating expressions,
so that a non-empty XDM instance can be returned by an expression as
well as a non-empty pending update list. In order to allow this, new
rules to determine the category and resulting pending update list are
added to every existing expression, following certain principles:
etc......."
Furthermore, what does "compliant" really mean? The W3C XQSE spec says
the following (in section 1):
"XQSX has the following properties:
It is a strict superset of XQUF, in the sense that all valid XQUF
expressions are also valid XQSX expressions and have the same meaning.
(In the same sense, XQUF is a strict superset of [XQuery 1.0].)"
I believe the same is true for Zorba's XQSE (but i need to double check
this). But your query is not a *valid* XQUF expression, so is there
really any violation here?
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You received this bug notification because you are a member of Zorba
Coders, which is the registrant for Zorba.
https://bugs.launchpad.net/bugs/1020588
Title:
Illegal updating expressions
Status in Zorba - The XQuery Processor:
Invalid
Bug description:
<a/>, delete node <a/>
Expected: XUST0001
Returned: <a/>
Hope this helps,
Christian
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