BaseX-Talk January 2016

basex-talk@mailman.uni-konstanz.de

39 participants
68 discussions

XQERY Help
by Mansi Sheth 14 Jan '16

14 Jan '16

Hello, I need help with hopefully a simple XQUERY. I want to extend below XQUERY to run not on all documents in all databases, but only on those documents which contains "input string X" in its db:path (i.e. its original file name). Any help appreciated. declare variable $n as xs:string external; (: command line query, to be entered as "n" variable :) declare option output:item-separator "
"; (: Each element would be in new line :) (: Run input query, on every XML document in every Database:) let $queryData := for $db in db:list() (: Assign dynamic variables to generate query, to be used in eval :) let $query := "declare variable $db external; " || "db:open($db)" || $n return xquery:eval($query,map { 'db': $db, 'query': $n }) return distinct-values($queryData) - Mansi

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How to get the complete list of full-text-index
by kleist 13 Jan '16

13 Jan '16

Hi all, hi Christian is there any way to get the complete list of the full-text-index? With the GUI I only get the first part: - Names: - Size: 5 MB - Entries: 23401 und 22662x der 20595x .... Thanks in advance. Best regards, Günter

3 6

BaseX 8.4 beta contains with collation
by Andy Bunce 13 Jan '16

13 Jan '16

Hi, Query: contains("aaa","ab", ' http://www.w3.org/2005/xpath-functions/collation/html-ascii-case-insensitive ') Improper use? Potential bug? Your feedback is welcome: Contact: basex-talk(a)mailman.uni-konstanz.de Version: BaseX 8.4 beta 1814d39 Java: Oracle Corporation, 1.8.0_45 OS: Windows 8.1, amd64 Stack Trace: java.lang.StringIndexOutOfBoundsException: String index out of range: 3 at java.lang.String.charAt(Unknown Source) at org.basex.query.util.collation.NoCaseCollation.indexOf(NoCaseCollation.java:35) at org.basex.query.util.collation.Collation.contains(Collation.java:123) at org.basex.query.func.fn.FnContains.item(FnContains.java:20) at org.basex.query.func.StandardFunc.optimize(StandardFunc.java:83) at org.basex.query.func.StandardFunc.compile(StandardFunc.java:76) at org.basex.query.MainModule.compile(MainModule.java:74) at org.basex.query.QueryCompiler.compile(QueryCompiler.java:113) at org.basex.query.QueryCompiler.compile(QueryCompiler.java:104) at org.basex.query.QueryContext.analyze(QueryContext.java:332) at org.basex.query.QueryContext.compile(QueryContext.java:318) at org.basex.query.QueryProcessor.compile(QueryProcessor.java:70) at org.basex.core.cmd.AQuery.query(AQuery.java:76) at org.basex.core.cmd.XQuery.run(XQuery.java:22) at org.basex.core.Command.run(Command.java:398) at org.basex.core.Command.execute(Command.java:100) at org.basex.gui.GUI.exec(GUI.java:469) at org.basex.gui.GUI.access$4(GUI.java:422) at org.basex.gui.GUI$7.run(GUI.java:411)

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Fulltext-Search: wildcards and thesaurus
by kleist 13 Jan '16

13 Jan '16

Hi all, hi Christian, is it possible to combine wildcards and thesaurus in a fulltext-search, for example: contains text "nachricht.*" using wildcards using thesaurus at "thesaurus.xml" Best regards, Günter

3 2

Automatically generating test cases. Hidden feature?
by Marc van Grootel 13 Jan '16

13 Jan '16

Hi, Been a long time since posting. Work is very busy recently. Luckily for me a lot of it involves XQuery ;-) I am elaborating some examples [1] that show off the use of my Origami [2] library. The most promising ones I will turn in to blog posts or a wiki at some point. Recently I've been reading a bit about generative testing (or property-based testing) and libraries like Haskell's QuickCheck. I hope to be able to show that we can use such techniques in combination with RelaxNG and the concepts that Eric van der Vlist describes in Examplotron [3] to mutate XML instances guided by a schema that I can then turn into automatically generated tests. It's still early days and time is limited but I did stumble onto something interesting that I wanted to share here. If you already use similar techniques I would be very interested to hear about it. I was contemplating if it was possible to create anonymous unit test functions that I can invoke with generated test input. So, a bit to my amazement, the following works: let $equals := %unit:test function($a,$b) { unit:assert-equals($a,$b, 'Not equal') } return $equals(4,3) This function raises the unit:UNIT0001 exception with the message "Item 1: 3 expected, 4 returned". Cool! So if this is possible can we also catch a failure and turn it into data? let $equals := %unit:test function($a,$b) { unit:assert-equals($a,$b, 'Not equal') } return try { $equals(4,3) } catch * { <error> <code>{ $err:code }</code> <description>{ $err:description }</description> <value>{ $err:value }</value> <module>{ $err:module }</module> <line-number>{ $err:line-number }</line-number> <column-number>{ $err:column-number }</column-number> </error> } This too works and produces an XML fragment recording the failure. Very cool! <error> <code>unit:UNIT0001</code> <description>Item 1: 3 expected, 4 returned.</description> <value>Not equal</value> <module>.../origami-examples/check/demo.xq</module> <line-number>23</line-number> <column-number>24</column-number> </error> I am not sure if this a hidden or an intentional feature of the BaseX unit module. I sure hope that it doesn't go away in future releases as I intend to leverage this in an alternative testing module. BaseX, the gift that keeps on giving, thanks to all that make it possible. --Marc [1] https://github.com/xokomola/origami-examples [2] https://github.com/xokomola/origami [3] http://examplotron.org/

3 3

minor issue in the project-view of BaseX-GUI with error marking
by Rob Stapper 13 Jan '16

13 Jan '16

Hi, I found that when a directory contains both a program- and a module-file with the same name but with different extensions ( .xq and .xqm) both file are marked as erroneous in the project-view if only one file, on my case the module-file, is indeed erroneous and the other file is ok. Regards, Rob Stapper PS. It is my unittest-directory that contains both program- and module-files.

2 4

XML embedded in JSON
by E. Wray Johnson 12 Jan '16

12 Jan '16

We have JSON that has string/text values which are XML. Is there a way o have the XML as sub-elements value and not be encoded/escaped string? Wray Johnson

2 1

XQUF 3.0, MIXUPDATES
by Hans-Juergen Rennau 12 Jan '16

12 Jan '16

Dear BaseX team, version 3.0 of the XQuery Update Facility (XQUF) allows expressions to perform an updating operation *and* return a value (e.g. [1]). Presently, BaseX supports probably only version 1.0 of the XQUF, so the mixing of update and value creates an error - and option MIXUPDATES equal "true" does not change this.: Query:=============================== declare option db:mixupdates 'true'; 100, insert node <elem/> into * ================================>Stopped at C:/projects/act/updateQuery.xq, 5/1: [XUST0001] List expression: all expressions must be updating or return an empty sequence. In my opinion, the possibility to mix updating and value construction is very important, as otherwise it is impossible to develop versatile tools which may, dependent on call parameters, either return a result or perform an update. So my Q U E S T I O N is - are there already plans to support XQUF 3.0 - or as a first step the mixing of update and value - soon? Would be phantastic! Cheers,Hans-Jürgen [1] http://www.w3.org/TR/xquery-update-30/#id-comma-expr"The operand expressions of the comma expression are evaluated,and the XDMinstances and pending update lists returned areconcatenated in operand order. Pending update lists are concatenatedby the upd:mergeUpdates operation."

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XML Commands
by E. Wray Johnson 12 Jan '16

12 Jan '16

How do you execute XML commands from the BaseX GUI? Why can't multiple XML commands be executed from the BaseXClient.java? How can database options (e.g. autooptimize) be changed from the GUI without opening the database and locking it?

2 1

Adding basex-talk to markmail
by Joe Wicentowski 12 Jan '16

12 Jan '16

Hi all, I wasn't able to find basex-talk in markmail.org - a fantastic site for searching mailing list archives. Would the list owners/administrators consider submitting this list to markmail? Information about this can be found at http://markmail.org/docs/feedback.xqy. Best, Joe

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BaseX-Talk January 2016