BaseX-Talk April 2011

basex-talk@mailman.uni-konstanz.de

27 participants
33 discussions

using variables along with namespace prefix
by Sony Vijay 05 Apr '11

05 Apr '11

Hi, I am using the sample xml document(xyz) shown below: <entry xmlns:libx="http://libx.org/xml/libx2"> <libx:libapp> First libapp </libx:libapp> <libx:libapp> Second libapp </libx:libapp> </entry> I am using BaseX 6.5.2 and am trying to use a variable along with a namespace prefix in my sample xquery like so: declare variable $libx_ns as xs:string external; declare namespace libx=$libx_ns; let $type := 'libapp' return doc('xyz')/entry*[libx:{$type}]*[1] When I pass the value "http://libx.org/xml/libx2" to the parameter libx_ns and run the above xquery I see the following exception: [XPST0003] Incomplete expression. However, the following xquery works: declare variable $libx_ns as xs:string external; declare namespace libx=$libx_ns; let $type := 'libapp' return doc('xyz')/entry*[libx:libapp]*[1] The child nodes could be libx:libapp or libx:module etc. So, I will have to use a variable rather than hard wiring the actual child name. But, I am not sure how to use a variable along with a namespace prefix. Am I doing something wrong or is this a bug ? Thanks, Sony

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Re: [basex-talk] tf/idf
by Andreas Weiler 03 Apr '11

03 Apr '11

You can change the input type in the left combobox to XQuery and then enter your full text query. However, I would suggest to use the XQuery view, because it offers detailed error feedback and syntax highlighting. -- Andreas Am 02.04.2011 um 18:01 schrieb Wiard Vasen: > Thanks a lot Andreas for your answer on my question. > I will look at your solution this week. > > I was in Berlin this weekend. > > Is it possible to use set scoring * and then enter full text queries in the upper text-bar? > > Thank you for the live-demo as well. > > If I succeed I come back to you. > > Regards, > > Wiard Vasen > > Vrije Universiteit van Amsterdam > Masterthesis: Deep diving into Van Gogh > > 2011/3/31 Andreas Weiler <andreas.weiler(a)uni-konstanz.de> > Dear Wiard Vasen, > > you just need to set the scoring property once. > If you work in the GUI: > > Go to the top input bar, choose command and type: > > set scoring * > > as * set the scoring algorithm you like. > > In the console just type: set scoring * > > After setting this you can use the score function, like in the 8th query of our online demo (basex.org/products/live-demo): > > let $names := ('Jack London', 'Jack', 'Jim Beam', 'Jack Daniels') > for $name at $pos score $score in $names[. contains text 'Jack'] > order by $score descending > return <name pos='{ $pos }'>{ $name }</name> > > Don't hesitate to ask for more, > Andreas > > Am 30.03.2011 um 22:02 schrieb Wiard Vasen: > >> Dear sirs of Basex, >> >> I am doing my Master thesis on the letters of Vincent van Gogh at the University of Amsterdam. >> For that purpose I use BaseX to analyze the letters. >> >> I wonder, is there the possibility to generate a tf/idf score automatically? >> In your faq I noticed there needs to be a special term like 'SET SCORING 0' to be able to get a tf/idf score. >> >> This information I get from the following page: http://docs.basex.org/wiki/Full-Text >> >> Could you help me with this? >> >> I would be very grateful. >> >> Kind regards, >> _______________________________________________ >> BaseX-Talk mailing list >> BaseX-Talk(a)mailman.uni-konstanz.de >> https://mailman.uni-konstanz.de/mailman/listinfo/basex-talk > >

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BaseX 6.6.1
by Christian Grün 01 Apr '11

01 Apr '11

Dear all, thanks to everyone who gave us great feedback on BaseX 6.6, either by e-mail or directly at the XMLPrague conference! This way, we were able to finish Version 6.6.1 just one week later, which offers some exciting performance improvements and some more bug fixes: XQuery: [ADD] index rewritings added for .../text()[. = ..] syntax [ADD] optimizations of mixed axis path expressions, e.g.: //x/name() [MOD] index rewritings on collections fixed and generalized [MOD] faster evaluation of filters with pos. predicates, e.g.: $x[5] [FIX] fixed relocation of let clauses in GFLWOR expressions [FIX] trace function returned wrong original results [FIX] variables in catch clauses were discarded [FIX] HOF optimizations and fixes GUI: [FIX] language option (for Japanese, German, etc. interface) fixed To be continued, Christian BaseX Team, 2011

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BaseX-Talk April 2011