Re: querying multiple params

Hi,

thanks for the feedback again! I coudn't install xacobeo so far with cygwin,
but still trying. I found the error, however, while I prepared the example
data for you! Just a stupid perl/xml thing. Perl starts to count at 0,
XSLT/XPATH at 1, of course. So, I did get the right results, but I didn't
notice.Anyways: thanks for the fast help!

best
Maurice

----------------------------------------------
Maurice Mengel
Music Archive
Ethnological Museum
National Museums in Berlin
http://www.ilkar.de
---------------------------------------------


On Fri, Jul 24, 2009 at 8:01 AM, Petr Pajas <[email protected]> wrote:

> 2009/7/24 Maurice Mengel <[email protected]>:
> > Hi Petr,
> >
> > thanks for the quick answer!
> >
> > It is not that I didn't read these sentences, but I don't quite know what
> to
> > do with it. I tried a lot of other queries  a long the way today and they
> > worked as expected, e.g.
> > //mpx:sammlungsobjekt[mpx:andereNr[@art = 'ID' and . = '$id'] and
> > mpx:andereNr[@art ='DAT-Nr.' and . ]]
> >
> > Only the full one doesn't work:
> > //mpx:sammlungsobjekt[mpx:andereNr[@art = 'ID' and . = '$id'] and
> > mpx:andereNr[@art ='DAT-Nr.' and = '$tape_no']]
> >
> >
> > That means only when I add the second variable, it doesn't work. That's
> why
> > I assumed, I don't need to take the namespace issue into consideration.
> > Anyways, it would be somewhat counter intuitive if the 2nd criterion
> breaks
> > the namespace. At least, this is how it looks for me at the moment.
> >
> > I tried of course what you suggest. But I don't really get it either. I
> > cannot find any example on the web easily. Special thanks therefore for
> the
> > faq. I forgot about it. I am not sure I understand XPathContext. Anyways,
> >
> >         my $xpc = XML::LibXML::XPathContext->new;
> >         $xpc->registerNs('mpx', 'http://www.mpx.org/mpx'<http://www.mpx.org/mpx%27>
> );
> >         my $xpath ="//mpx:sammlungsobjekt[mpx:andereNr[\@art = 'ID' and .
> =
> > '$id'] and mpx:andereNr[\@art ='DAT-Nr.' and . = '$tape_no']]";
> >         my @nodes = $xpc->findnodes($xpath, $root);
> >
> > gives me exactly the same result (with and without the 2nd variable).
> >
> > Are you sure it is the namespace? Seems hard to believe...
>
> Sorry, answering emails late at night was not a good idea. You are
> right, if the namespaces were not registered, you would get an error.
>
> So hard to tell, post a sample XML file and the values of the
> interpolated variables.
>
> -- Petr
>

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