September 2012 - BaseX-Talk - mailman.uni-konstanz.de

BaseX 7.3: unexpected Stack Overflow
by Torsten Grust 18 Sep '12

18 Sep '12

Dear all, I have been playing with the following toy implementation of a super-simple associative map (it's mainly an exercise in demonstrating the use of h-o functions in XQuery 3.0): > declare namespace map = "http://db.inf.uni-tuebingen.de/map"; > > declare function map:entry($map, $k, $v) { > function($x) { if ($x eq $k) then $v else $map($x) } > }; > > declare function map:empty() > { > function($x) { () } > }; > > > let $map := map:empty(), > $map1 := map:entry($map, 1, ("one", "eins", "uno")), > $map2 := map:entry($map1, 2, ("two", "zwei", "due")) > return $map2(1) The execution of this script with BaseX 7.3 unexpectedly yields Stack Overflow: circular variable declaration? Note that replacing $map2(1) by $map1(1) in the last line returns the expected result ("one", "eins", "uno"). I'd be grateful for any comment/insight. Cheers and keep up the good work, --Torsten -- | Prof. Dr. Torsten Grust | Database Systems — Universität Tübingen (Germany) | torsten.grust(a)uni-tuebingen.de | db.inf.uni-tuebingen.de

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REST "directory" listing
by basex＠phpexpert.net 18 Sep '12

18 Sep '12

Hi @all, since BaseX 7.3 it seems there ist no more resource listing of sub paths of a database http://localhost:8984/rest/factbook/tmp [1] as example won't work There will be an error like Name 'factbook/tmp' is invalid. Listing in http://localhost:8984/rest/factbook/ [2] shows the path and it's contents factbook.xml tmp/factbook.xml in BaseX7.2 the listing of paths was possible Regards Marcus Links: ------ [1] http://localhost:8984/rest/factbook/tmp [2] http://localhost:8984/rest/factbook/tmp

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Is BaseX suitable for storing XML files that follow different schemas ?
by Tom Bailly-Salins 14 Sep '12

14 Sep '12

Hello BaseX list, After looking at the BaseX website and XML databases in general I would like to know if BaseX would be suitable for the following application. I would like to store a relatively large amount of XML files (couple of hundreds) that contain metadata information that is compliant with various standard metadata schemas (Dublincore, ISO, INSPIRE, etc...). Once stored in one (or several - 1 per schema type?) BaseX database(s) I would like to be able to: - search these XML files accross schemas and namespaces to perform general keyword searches - search for specific information within a known schema and namespace - return query results in an HTML format to display directly on a web page I would like to know if BaseX would be suitable for such application and how flexible BaseX is in storing XML files compliant with different schemas and containing several namespaces. If suitable, what would be the best practice for storing the different XML files? Should all the XML files that follow a same schema be stored in the same database (for faster indexing, easier searching?) or I can I use a single database to store all XML files regardless of the fact that they follow different XSD schemas ? Thanks a lot for any input Tom

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using xslt 2 --- Unknown function 'current-grouping-key(...)'.
by Alex Muir 13 Sep '12

13 Sep '12

Hi, Following the http://docs.basex.org/wiki/XSLT_Module I'm launching basex as follows java -classpath /mnt/xslt_volume/i4EnrichV7/resources/libs/saxon9he.jar -jar /mnt/xslt_volume/i4EnrichV7/resources/libs/BaseX73.jar I get an error thought when executing which makes me think I have not convinced basex that saxon is there to use... Error: Stopped at line 14, column 48 in /mnt/xslt_volume/i4EnrichV7/analysis/xquery/AggregateSectionsTitleNormalized.xq: [XPST0017] Unknown function 'current-grouping-key(...)'. Query: let $in := .//section let $sections := <sections> $in </sections> let $style := <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:fn="http://www.w3.org/2005/xpath-functions" xmlns:mh="http://www.metaheuristica.com" version="2.0"> <xsl:output method="xml" indent="no"/> <xsl:template match="sections"> <groups> <xsl:for-each-group select="section" group-by="@titleNormalized"> <group name="{current-grouping-key()}" count="{count(current-group())}"/> </xsl:for-each-group> </groups> </xsl:template> </xsl:stylesheet> return xslt:transform($sections, $style) What am I doing wrong? Regards -- - Alex G. Muir Software Engineering Consultant Linkedin Profile : http://ca.linkedin.com/pub/alex-muir/36/ab7/125

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The future of db:create
by Andy Bunce 12 Sep '12

12 Sep '12

I saw there was briefly 7.4 build with a db:create function and then this functionality was removed. Is this likely to come back for the 7.5 release? It would seem if HTTPLOCAL [1] is in use then the options for database management are somewhat limited? Also would you except any significant performance benefits from HTTPLOCAL? /Andy http://docs.basex.org/wiki/Options#HTTPLOCAL

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xquery grouping
by sateesh 10 Sep '12

10 Sep '12

Hi Basex, I have written a query on an xml file which contains 13000 nodes ,query does some grouping action on that xml,when I run that query it is taking huge amount of memory and also processing time. Thanks & Regards Sateesh.A

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Unable To Query XML document with Namespace Declarations
by Ramesh G 10 Sep '12

10 Sep '12

Hi All, I am trying to query an XML document which has some namespace declarations. But, unfortunately the query is not giving any result. When I try to execute the same query after removing the namespace declaration, everything works fine. Is there any way to query the document with namespace declaration? I am attaching the XML document for your reference. Any help would be greatly appreciated. Thanks, Ramesh

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Individual docs from collection
by sateesh 09 Sep '12

09 Sep '12

Hi Basex, I have created a collection with 10k xml files and now on that collection I want to write query on few xml's only .could you please suggest how this functionality is achieved. Thanks & Regards Sateesh.A

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Re: [basex-talk] Full-Text Query Including Attributes
by 赤瀬川史朗 07 Sep '12

07 Sep '12

Hi, Christian, > Others have asked for this before, so chances are > increasing that we will eventually add this in a > future version. That's great news for me! I'm looking forward to it. Best, Sam

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can restxq add a document to the db and return an http response?
by Colin McEnearney 07 Sep '12

07 Sep '12

Hi, Is it possible with restxq to add a document to a db? And if so, to also return an http response? I am trying to get the first part working with something along these lines: declare %rest:path("form/") %rest:POST %rest:form-param("content","{$form-input}", "'no message delivered'") function page:add-doc($form-input as xs:string) { let $new-doc:= <root> <tag> <form-data>{ $form-input }</form-data> </tag> </root> return db:add("test_db", $new-doc, "test.xml") }; Many thanks, Colin

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