I was thinking of
http://www.w3.org/TR/xquery-update-30/#id-dynamic-function-invocation and
http://www.w3.org/TR/xquery-update-30/#id-inline-function
Allowing something like:
declare updating function local:check($fn){
if(1=random:integer(2)) then db:output($fn())
else db:output("no action")
};
let $v:="good"
return local:check(%updating function(){ db:output($v)})
/Andy
On Wed, Jan 9, 2013 at 9:38 PM, Christian Grün <christian.gr...@gmail.com>wrote:
> Hi Andy,
>
> true.. For everyone else: the latest versions of the XQuery 3.0 specs
> have just been made
> public:
>
> http://www.w3.org/TR/xquery-30/
> http://www.w3.org/TR/xquery-update-30/
> http://www.w3.org/TR/xpath-full-text-30/
>
> > From my reading: it looks like the latest version of the spec has
> addressed
> > the "updating operations in closures" issue. Can we expect a BaseX
> > implementation soon :-)
>
> Could you give me a hint which section do you exactly refer to?
> Christian
> ___________________________
>
> On Wed, Jan 9, 2013 at 10:19 PM, Andy Bunce <bunce.a...@gmail.com> wrote:
> >
> > /Andy
> >
> >
> >
> > On Thu, Nov 22, 2012 at 2:40 PM, Christian Grün <
> christian.gr...@gmail.com>
> > wrote:
> >>
> >> Hi Daniel,
> >>
> >> > Doesn't it introduce performance problems though? If you do this
> copying
> >> > with some bigger chunk of XML does it take the same amount of memory
> or is
> >> > it somehow "delta" optimized?
> >>
> >> Yes; this is due to the specification, btw. Whatever you copy in your
> >> XQUF spec. is supposed to be cached before it is being evaluated.
> >>
> >> Regarding updating operations in closures: the current version of the
> >> spec. disallows updating operations, because it cannot be statically
> >> determined if a dynamic function invocation is an updating expression
> >> or not. See [1] for more details.
> >>
> >> Best,
> >> Christian
> >>
> >> [1]
> http://www.w3.org/TR/xquery-update-30/#id-dynamic-function-invocation
> >> _______________________________________________
> >> BaseX-Talk mailing list
> >> BaseX-Talk@mailman.uni-konstanz.de
> >> https://mailman.uni-konstanz.de/mailman/listinfo/basex-talk
> >
> >
>
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