We are working hard on Sedna 4.0 and it's not too simple to have a trip
anywhere at this moment :)
On Thu, Sep 13, 2012 at 5:29 PM, Charles Foster <char...@cfoster.net> wrote:
> Will you be at XML Amsterdam on Wednesday?
>
> And will any other people who are on this list be there?
>
> On 13 September 2012 12:16, Robby Pelssers <robby.pelss...@nxp.com> wrote:
> > Hi Charles,
> >
> > Excellent suggestion. It's not the usual approach we take to set
> properties but there's also nothing stopping me from storing XML in Sedna
> containing properties.
> >
> > Brilliant workaround ;-)
> >
> > Thx,
> > Robby
> >
> > -----Original Message-----
> > From: charles.fos...@gmail.com [mailto:charles.fos...@gmail.com] On
> Behalf Of Charles Foster
> > Sent: Thursday, September 13, 2012 12:52 PM
> > To: Robby Pelssers
> > Cc: sedna-discussion@lists.sourceforge.net
> > Subject: Re: [Sedna-discussion] question related to external global
> variables
> >
> > Hi Robby,
> >
> > XQuery Library Modules (stored in Sedna) [1] can not have external
> variables.
> > Only XQuery Main Modules (i.e. Ad-hoc queries) can have external
> > variables, you can bind these from the XQJ driver.
> >
> > You could set a constant variable in an XQuery Library Module.
> >
> > e.g.
> >
> > import module namespace constants = "http://
> http://prod.nxp.com/constants";;
> >
> > declare function rdfutil:getURI($type as xs:string, $id as xs:string)
> > as xs:anyURI {
> > xs:anyURI(concat($constants:base_uri, "/id/", $type, "/",
> > rdfutil:normalizeIdentifier($id)))
> > };
> >
> > If you want flexibility, you could have an XQuery Library Module which
> > provided functions to read values (like a base-uri) from a XML
> > document existing in the Database.
> >
> > If you want to import no library module AND want for the variable like
> > $base-uri to exist for every single ad-hoc XQuery you invoke, you will
> > need to declare an external variable and bind via XQExpression or
> > XQPreparedExpression.
> >
> > Hope this helps.
> >
> > Regards,
> >
> > Charles
> >
> > [1] http://www.sedna.org/progguide/ProgGuidesu8.html#x14-570002.5.5
> >
> >
> > On 13 September 2012 11:15, Robby Pelssers <robby.pelss...@nxp.com>
> wrote:
> >> Hi all,
> >>
> >> I've read that Sedna does not support external variables
> http://www.sedna.org/progguide/ProgGuidesu4.html
> >>
> >> But I have a function that needs to return a URI which is environment
> specific.
> >>
> >> declare function rdfutil:getURI($type as xs:string, $id as xs:string)
> as xs:anyURI {
> >> xs:anyURI(concat("http://prod.nxp.com";, "/id/", $type, "/",
> rdfutil:normalizeIdentifier($id)))
> >> };
> >>
> >> So ideally I want to use a global variable which I can set externally.
> (e.g. $base_uri)
> >>
> >> declare function rdfutil:getURI($type as xs:string, $id as xs:string)
> as xs:anyURI {
> >> xs:anyURI(concat($base_uri, "/id/", $type, "/",
> rdfutil:normalizeIdentifier($id)))
> >> };
> >>
> >> But Sedna won't allow me to deploy this module which is understandable
> as I reference a non declared variable
> >>
> >> Details: at (10:35), syntax error, unexpected ;, expecting := or as or
> external
> >>
> >>
> >> I could of course change the function signature to
> >> declare function rdfutil:getURI($base_uri as xs:string, $type as
> xs:string, $id as xs:string) as xs:anyURI {
> >> xs:anyURI(concat($base_uri, "/id/", $type, "/",
> rdfutil:normalizeIdentifier($id)))
> >> };
> >>
> >> But this would have to get propagated to ALL functions calling
> rdfutil:getURI, which more concretely would involve changing every single
> function as they all depend on this rdfutil:getURI (in)directly.
> >>
> >> As a side note,
> >>
> >> We are using the driver from Charles Foster but that won't help us in
> this case as this use case is about modules and not standalone xqueries
> used in our app.
> >>
> >> So besides the tedious solution of refactoring all function signatures,
> is there a simpler way?
> >>
> >> Thx in advance,
> >> Robby
> >>
> >>
> >>
> >>
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> >> https://lists.sourceforge.net/lists/listinfo/sedna-discussion
> >>
> >
> >
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> >
>
>
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