Thanks. However, I noticed in the documentation that this streaming facility
is available for an expression that must start with doc() (i.e. it must read a
file). If I set my document context to another source (e.g. a character
stream produced by another part of my code) using the bindDocument() method,
is there a way to achieve the same result?
Sylvain
> > -----Original Message-----
> Date: Thu, 10 Jul 2008 21:24:49 +0100
> From: "Michael Kay" <
mike@...>
> Subject: Re: [saxon] Partial results from a query?
> To: "'Mailing list for the SAXON XSLT and XQuery processor'"
> <
saxon-help@...>
> Message-ID: <FAD5BE0E47FF48ACA1B9AC24BF18CEF6@Sealion>
> Content-Type: text/plain; charset="iso-8859-1"
>
>
> You can do this using the streaming facility which is new (as far as XQuery
> is concerned) in Saxon-SA 9.1.
>
> You would have to write this as
>
> (#saxon:stream#) {doc('in.xml')/a/*}
>
> to invoke the streaming mode of execution. Further details:
>
>
http://www.saxonica.com/documentation/sourcedocs/serial.html >
> (I'm not sure if you can write "for $x in doc('in.xml')/a/* return $x".
> Saxon will always rewrite "for $x in E return $x" as simply "E", but it may
> make decisions on streamability before this rewrite is done - I would have
> to check).
>
> Michael Kay
>
http://www.saxonica.com/ > > -----Original Message-----
> > From:
saxon-help-bounces@...
> > [mailto:
saxon-help-bounces@...] On Behalf
> > Of Sylvain Hall?
> > Sent: 10 July 2008 17:36
> > To:
saxon-help@...
> > Subject: [saxon] Partial results from a query?
> >
> > Is it possible for Saxon to output partial results from a
> > query in XQuery as soon as possible, while the input is being read?
> >
> > For example, a query like "for $x in /a/* return $x" would
> > send each element "a" to the output as soon as its closing
> > tag is encountered by the SAX parser.
> > I would like to watch the output stream and capture these
> > results as soon as they come out.
> >
> > By tracing the execution in my custom XMLReader, I noticed
> > that the whole input file is read before the first element
> > from the result is sent to the output stream.
> >
> > Thanks,
> >
> > --
> > Sylvain Hall?, finissant du doctorat / Ph.D. Candidate
> >
> > D?partement d'informatique
> > Universit? du Qu?bec ? Montr?al
> > C.P. 8888, Succ. Centre-ville
> > Montr?al (Qu?bec)
> > CANADA H3C 3P8
> >
> > E-mail:
shalle@...
> > Web: www.leduotang.com/sylvain
> > Tel: +1 (514) 987-4186
> > Fax: +1 (514) 987-8477
--
Sylvain Hallé, finissant du doctorat / Ph.D. Candidate
Département d'informatique
Université du Québec à Montréal
C.P. 8888, Succ. Centre-ville
Montréal (Québec)
CANADA H3C 3P8
E-mail:
shalle@...
Web: www.leduotang.com/sylvain
Tel: +1 (514) 987-4186
Fax: +1 (514) 987-8477
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