BaseX-Talk

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12 participants
5242 discussions

probably a bug
by Rob Stapper 02 Sep '21

02 Sep '21

Hi Cristian, Consider snippets [1] and [2], both result in false(). That can’t be right to me. [1] () = 4 [2] () != 4 Rob. Sent from Mail for Windows -- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

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ignore previous mail, please!
by Rob Stapper 02 Sep '21

02 Sep '21

I need a holyday. Sorry about the previous mail. Need to use not()-function offcourse. Rob. Sent from Mail for Windows -- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

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Error executing an SQL query using «SQL Module»
by Artur Moor 27 Aug '21

27 Aug '21

*Dear all,* *When executing an SQL query with the SQL module:* sql:init("com.microsoft.sqlserver.jdbc.SQLServerDriver"), let $connection := sql:connect("jdbc:sqlserver://SQLHOST:1433;databaseName=DBNAME", "username", "pa$$w0rd") return sql:execute($connection, "SELECT * FROM TABLE") *I get the following error message:* Error: Stopped at /Users/sa/staging/file, 3/19: [sql:error] An SQL exception occurred: Das Resultset wurde geschlossen. Compiling: - inline let $connection_0 := sql:connect("jdbc:sqlserver://SQLHOST:1433;databaseName=DBNAME", "username", "pa$$w0rd") - simplify FLWOR expression: sql:connect("jdbc:sqlserver://SQLHOST:1433;databaseName=DBNAME", "username", "pa$$w0rd") ! sql:execute(., "SELECT * FROM TABLE") Optimized Query: (sql:init("com.microsoft.sqlserver.jdbc.SQLServerDriver"), sql:connect("jdbc:sqlserver://SQLHOST:1433;databaseName=DBNAME", "username", "pa$$w0rd") ! sql:execute(., "SELECT * FROM TABLE")) Query: sql:init("com.microsoft.sqlserver.jdbc.SQLServerDriver"), let $connection := sql:connect("jdbc:sqlserver://SQLHOST:1433;databaseName=DBNAME", "username", "pa$$w0rd") return sql:execute($connection, "SELECT * FROM TABLE") Query Plan: <QueryPlan compiled="true" updating="false"> <List type="item()*"> <SqlInit name="sql:init" type="empty-sequence()" size="0"> <Str type="xs:string" size="1">com.microsoft.sqlserver.jdbc.SQLServerDriver</Str> </SqlInit> <IterMap type="item()*"> <SqlConnect name="sql:connect" type="xs:integer" size="1"> <Str type="xs:string" size="1">jdbc:sqlserver://SQLHOST:1433;databaseName=DBNAME</Str> <Str type="xs:string" size="1">username</Str> <Str type="xs:string" size="1">pa$$w0rd</Str> </SqlConnect> <SqlExecute name="sql:execute" type="item()*"> <ContextValue type="xs:integer" size="1"/> <Str type="xs:string" size="1">SELECT * FROM TABLE</Str> </SqlExecute> </IterMap> </List> </QueryPlan> *Does anyone have an idea what the problem is?* *Any hints are welcome!*

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XQuery output without namespace declaration
by Yann NICOLAS (ABES) 25 Aug '21

25 Aug '21

Hi all, I am looking for the equivalent instruction of XSLT attribute @omit-xml-declaration in XQuery. My input is : > <marc> > <marc:record *xmlns:marc="http://www.loc.gov/MARC21/slim" > xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"*> > <marc:leader>01321nam a22002772a 4500</marc:leader> > <c level="item"> > <did> > <unitid type="division">1808001595</unitid> > </did> > </c> > </marc:record> > <marc> My query is : > declare namespace marc="http://www.loc.gov/MARC21/slim"; > > for $record in db:open('marcxml_full')/marc/marc:record > return > insert node $record/c into db:open('uk_parlement_ead')/dsc The ouput is : > <c *xmlns:marc="http://www.loc.gov/MARC21/slim" > xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" *level="item"> > <did> > <unitid type="division">1808001595</unitid> > </did> > </c> As you can see, there are no marc: elements in this output, hence no need for the marc: namespace. How to get rid of @xmlns:marc and xmlns:xsi ? Thanks a lot for your help ! Regards Yann

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EMail module and javax.activation.DataSource
by dudzikp＠yahoo.com 25 Aug '21

25 Aug '21

Dear all, I am trying to use a basex Email module http://files.basex.org/modules/org/basex/modules/email/EMail.jar. I downloaded a new basex instance (9.6 version) and added this jar to lib directory. Based on the xquery/email.xq file I created the following file: import module namespace email = 'http://basex.org/modules/email/EMail'; let $mail := <email> <from>myuser@machine-office</from> <to>myuser@machine-office</to> <host>localhost</host> <subject>Hello!</subject> <message>Enjoy</message> </email> return email:send($mail) While running the file I obtain: Stopped at /home/myuser/Downloads/basex/file, 12/13: [XPTY0004] javax.activation.DataSource. Caused by: org.basex.modules.email.EMail:send(element()). What's the problem? Shouldn't I use this module? BR

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BaseX 9.6 - BaseX96.zip - missing? Image not found: /img/c_go.png and Image not found: /img/c_editopen.png
by Patrick Durusau 20 Aug '21

20 Aug '21

Great to see the new version! Running ./basexgui 2 image not found messages (omitting the at messages) Image not found: /img/c_go.png and Image not found: /img/c_editopen.png On Debian (Buster I think). Thanks for all the hard work! Patrick -- Patrick Durusau patrick(a)durusau.net Technical Advisory Board, OASIS (TAB) Editor, OpenDocument Format TC (OASIS), Project Editor ISO/IEC 26300 Co-Editor, ISO/IEC 13250-1, 13250-5 (Topic Maps) Another Word For It (blog): http://tm.durusau.net Homepage: http://www.durusau.net Twitter: patrickDurusau

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org.basex.core.BaseXException with no error message
by Matthew Dziuban 17 Aug '21

17 Aug '21

Hi all, I'm using the java ClientSession class defined in the basex-api module and I'm seeing intermittent org.basex.core.BaseXException errors with an empty error message when executing long-running read queries or CREATE DB commands. The stack trace of the most recent error points to ClientSession.receive ( https://github.com/BaseXdb/basex/blob/9.5.2/basex-core/src/main/java/org/ba… ) org.basex.core.BaseXException: org.basex.api.client.ClientSession.receive(ClientSession.java:190) org.basex.api.client.ClientSession.send(ClientSession.java:178) org.basex.api.client.ClientSession.send(ClientSession.java:215) org.basex.api.client.ClientSession.create(ClientSession.java:128) ... Unfortunately since the message is empty it's difficult to debug what's going wrong. I've checked the log files in basex/data/.logs but haven't found any information about the failure. Is there another place I can look? Or do you have any other recommendations for debugging the errors? Thanks in advance, Matt

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Polling break for loop
by Adam Law 15 Aug '21

15 Aug '21

If polling a url n times and breaking if response is 'completed', is the best to approach to use try catch and error() to get around immutability? I need the full response on complete so I redo the last http get. It is not a biggie requesting twice. Adam On Fri., 13 Aug. 2021, 6:00 pm , <basex-talk-request(a)mailman.uni-konstanz.de> wrote: > Send BaseX-Talk mailing list submissions to > basex-talk(a)mailman.uni-konstanz.de > > To subscribe or unsubscribe via the World Wide Web, visit > https://mailman.uni-konstanz.de/mailman/listinfo/basex-talk > or, via email, send a message with subject or body 'help' to > basex-talk-request(a)mailman.uni-konstanz.de > > You can reach the person managing the list at > basex-talk-owner(a)mailman.uni-konstanz.de > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of BaseX-Talk digest..." > > > Today's Topics: > > 1. XProc? (Jonathan Robie) > 2. Re: XProc? (Martin Honnen) > 3. Pretty-print the -V optimized query? See what indexes are > used? (Jonathan Robie) > 4. Re: XProc? (Imsieke, Gerrit, le-tex) > 5. org.basex.core.BaseXException with no error message > (Matthew Dziuban) > 6. Re: org.basex.core.BaseXException with no error message > (Christian Gr?n) > 7. Re: Pretty-print the -V optimized query? See what indexes are > used? (Christian Gr?n) > 8. Can XQuery return unique values present across multiple > databases? (Tamara Marnell) > 9. Re: Can XQuery return unique values present across multiple > databases? (Martin Honnen) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Thu, 12 Aug 2021 07:58:04 -0400 > From: Jonathan Robie <jonathan.robie(a)gmail.com> > To: BaseX <basex-talk(a)mailman.uni-konstanz.de> > Subject: [basex-talk] XProc? > Message-ID: > < > CAOkFc+vMLcdXFUZBUvZZVLF8Wc3nKSLASpPKFWV_WPh7hRnEFw(a)mail.gmail.com> > Content-Type: text/plain; charset="utf-8" > > What hooks does BaseX provide for XProc? Where can I find examples of > BaseX use in an XProc pipeline? > > Jonathan >

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for-each issue on child-elements
by Rob Stapper 14 Aug '21

14 Aug '21

Hi Christian, I encountered this erroneous behavior while using the for-each-function on a set with child-elements. The evident work-around [2] workd fine. I’m using BaseX 9.6 RC2. I attached the code as attachment. Hope this helps. [1] let $context := <A><B1><C11></C11><C12></C12></B1><B2><C21></C21></B2></A> let $context.processor := function( $context as element( ) , $context.processor as function(*) ) as map(*) { map { $context => name() : $context/child::* => for-each( $context.processor( ? , $context.processor ) ) } } return $context => $context.processor( $context.processor ) [2] let $context := <A><B1><C11></C11><C12></C12></B1><B2><C21></C21></B2></A> let $context.processor := function( $context as element( ) , $context.processor as function(*) ) as map(*) { map { $context => name() : $context/child::* => for-each( function( $child as element( ) ) { $child => $context.processor( $context.processor ) } ) } } return $context => $context.processor( $context.processor ) Rob Sent from Mail for Windows -- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

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Can XQuery return unique values present across multiple databases?
by Tamara Marnell 14 Aug '21

14 Aug '21

Short question: Is it possible to write an XQuery FLWOR statement that can return a set of unique values present across multiple databases? Long question: Our new website in development displays EAD finding aids stored across 45 databases in BaseX. I've built "facet" databases that index terms in the EADs from controlled vocabularies like subjects, places, personal names, etc. The indexes follow this structure, where each EAD node contains a unique identifier: <terms type="subject"> <term text="Literature" db="1"> <ead>12345</ead> <ead>67890</ead> </term> <term text="Poetry" db="1"> <ead>abcde</ead> </term> {etc.} </terms> In the search interface, users can select multiple facets to apply to one search. For example, they could browse database 12 for EADs with the subject "Literature" *and* the place "Oregon," etc. I currently use the REST server to run an XQuery file that loops through each selected facet and prints *all* EAD IDs for each submitted term and database. Then after results are returned, I use PHP to count occurences of each EAD and print them only if the total count matches the count of facets used. declare variable $d as xs:string external; declare variable $f as xs:string external; let $db_ids := tokenize($d, '\|') return <facets>{ for $facet in tokenize($f, '\|') let $split := tokenize($facet, ':') let $facet_type := $split[1] let $facet_term := $split[2] let $facet_db := 'facet-' || $facet_type return <facet type="{$facet_type}" term="{$facet_term}">{ for $ead in db:open($facet_db)/terms/term[@text=$facet_term and @db=$db_ids]/ead return $ead }</facet> }</facets> So in the hypothetical example above, I'd pass "12" as d (or multiple selected databases separated by bars) and "subject:Literature|geogname:Oregon" as f, and I'd get back a document like: <facets> <facet type="subject" term="Literature"> <ead>12345</ead> <ead>67890</ead> </facet> <facet type="geogname" term="Oregon"> <ead>12345</ead> </facet> </facets> The count of "12345" will equal the count of the user's selected facets, so that result will be printed, but 67890 will not. Is there a more efficient way to do this? I'd prefer the XQuery to return only the EADs that meet all criteria, so only 12345 would be returned because it's in facet-subject under Literature *and* in facet-geogname under "Oregon," and then I don't have to do any post-processing. -Tamara -- Tamara Marnell IT Manager Orbis Cascade Alliance (orbiscascade.org <https://www.orbiscascade.org/>) Pronouns: she/her/hers

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