BaseX-Talk

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8 participants
5255 discussions

Issues with X11 display
by Graydon Saunders 30 Apr '24

30 Apr '24

Hello -- After upgrading to Fedora 40, I find that I can not run the BaseX GUI. This is against BaseX110-20240426.163243.zip or 10.7 17:28 bin % ./basexgui /home/graydon/bin/basex/basex/.basex: writing new configuration file. Exception in thread "main" java.awt.HeadlessException: No X11 DISPLAY variable was set, or no headful library support was found, but this program performed an operation which requires it, at java.desktop/java.awt.GraphicsEnvironment.checkHeadless(GraphicsEnvironment.java:166) at java.desktop/java.awt.Window.<init>(Window.java:553) at java.desktop/java.awt.Frame.<init>(Frame.java:428) at java.desktop/java.awt.Frame.<init>(Frame.java:393) at java.desktop/javax.swing.JFrame.<init>(JFrame.java:180) at org.basex.BaseXGUI.splash(BaseXGUI.java:96) at org.basex.BaseXGUI.<init>(BaseXGUI.java:54) at org.basex.BaseXGUI.main(BaseXGUI.java:37) 17:23 bin % java -version openjdk version "21.0.2" 2024-01-16 OpenJDK Runtime Environment (Red_Hat-21.0.2.0.13-4) (build 21.0.2+13) OpenJDK 64-Bit Server VM (Red_Hat-21.0.2.0.13-4) (build 21.0.2+13, mixed mode, sharing) Various attempts to set DISPLAY have not been helpful. Trying to use OpenJDK 17 produced effectively the same error message at greater length. Anyone got any suggestions on how to fix this? Thanks! Graydon

4 4

Request and JSON parsing
by Günter Dunz-Wolff 26 Apr '24

26 Apr '24

Hi there, via RESTXQ I request a vectorstore. The response is an JSON-Object. For example: With the following curl: curl https://vector.io/query-data \ -H "Authorization: Bearer ABcFMGhetc" \ -d '{ "data": "Du hast dem Menschen ein so freies, herrliches und üppiges Leben bestimmt", "topK": 2, "includeVectors": false, "includeMetadata": true }' I'm getting this object: { "result" : [ { "id" : "ba02277", "score" : 0.9949091, "metadata" : {"genre":"ba","blatt":"1810-01","autor":"Kleist","titel":"Zoroaster.","link":"https://kleist-digital.de/etc","text":"freies, herrliches und üppiges Leben bestimmt."} }, { "id" : "ba01711", "score" : 0.8891792, "metadata" : {"genre":"ba","blatt":"1810-29","autor":"Ompteda","titel":"Fragmente","link":"https://kleist-digital.de/etc","text":"So mit dem Menschen im Moralischen."} } ] } 1. Is the request in my RESTXQ in the right form? http:send-request( <http:request method="post" href="{$prod:url}/query-data"> <http:header name="Authorization" value="Bearer {$prod:token}"/> <http:body media-type="application/json"> {{ "data": "{$query}", "topK": 20, "includeVectors": false, "includeMetadata": true }} </http:body> </http:request> ) 2. I'm getting a full Object (but I dont know, if its the raw JSON-Object like above), but I am not able, to parse it, to get a list in html. In the documentation https://docs.basex.org/wiki/JSON_Module is an example: let $input := '{ "Title": "Drinks", "Author": [ "Jim Daniels", "Jack Beam" ] }' let $data := json:parse($input, map { 'format': 'xquery' }) return map:for-each($data, function($k, $v) { $k || ': ' || string-join($v, ', ') }) But my Object is more complex and I don't know, how to get two and more datasets with $k and $v out of the object. I want to have the following list: <div> <li> <ul> <li>Score: result score</li> <li>Blatt: result blatt</li> <li>Autor: result autor</li> <li>Titel: result titel</li> <li>Text: result text</li> <li>Link: result link</li> </ul> </li> <ul> <li></li> </ul> etc. </div> Thanks for any help Günter

3 5

Performance issue with BaseX CLI
by ANDRADE Antonio 22 Apr '24

22 Apr '24

Hie, For the purposes of European Water Framework Directive reporting, I compared the performances of the Saxon and BaseX XQuery engines. I observe a performance gap of a factor of 100 to 200 depending on the use case (see functions test_xquery_monitoring() and test_xquery_multischema_2022() in scripts test_saxoncee.py and test_basex.sh available at https://outil-transferts.ofb.fr/?107ae461a144d0b) Can you please help me understand the reasons for such gaps ? Thanks in advance, Antonio Andrade Date engineer

5 9

file:path-to-native() throws an error if its argument does not exist
by Imsieke, Gerrit, le-tex 22 Apr '24

22 Apr '24

I have a file:// URI that corresponds to a directory that I need to create (using svn mkdir, therefore file:create-dir() is not an option here) if it doesn’t exist. Calling file:path-to-native() on it results in a file:not-found error. Is there a fundamental reason why the file needs to exist before transforming its URI into the OS-native representation? Using BaseX 10.7. Gerrit

3 3

.xar deployment
by Régis WITZ 11 Apr '24

11 Apr '24

Hi all, I'm kind of a XQuery noob, but I'm guilty of the creation of a little BaseX module, Heimdall (10.5281/zenodo.10638084 <https://zenodo.org/records/10638084>). It's automatically built, unit tested and documented using GitLab CI. All build results, including the .xar file, are hosted using GitLab Pages. Thus, the module .xar archive is available here : |https://datasphere.gitpages.huma-num.fr/heimdall/xquery/heimdall.xar| <https://datasphere.gitpages.huma-num.fr/heimdall/xquery/heimdall.xar>. As you see, all this is hosted in Huma-Num's self-hosted GitLab instance (Huma-Num is a french research infrastructure). However, this mail is /not/ (just) a shameless plug. My issue is that I cannot install my .xar directly with |REPO INSTALL| : 1. I cannot install it with the CLI: basex -c"<repo-install path='https://datasphere.gitpages.huma-num.fr/heimdall/xquery/heimdall.xar'/>" [repo:not-found] Package 'https://datasphere.gitpages.huma-num.fr/heimdall/xquery/heimdall.xar' not found. Things are perfectly fine with for example the functx package : |basex -c"<repo-install path='https://files.basex.org/modules/expath/functx-1.0.xar'/>"| 2. For gigs, I tried to change the protocol from HTTPS to HTTP, and here is the error that I get : basex -c"<repo-install path='http://datasphere.gitpages.huma-num.fr/heimdall/xquery/heimdall.xar'/>" [repo:parse] heimdall.xar: Resource "expath-pkg.xml" not found.. So, maybe there is a problem with my expath-pkg.xml file ? I didn't find any -but, as I said, I'm no pro. If needed, here is the file that is wrapped in the .xar : https://gitlab.huma-num.fr/datasphere/heimdall/xquery/-/raw/main/expath-pkg… <https://gitlab.huma-num.fr/datasphere/heimdall/xquery/-/raw/main/expath-pkg…> 3. However, when I download my .xar file from the URL, and then REPO INSTALL it using the local path, stuff works fine : wget --no-check-certificate https://datasphere.gitpages.huma-num.fr/heimdall/xquery/heimdall.xar basex -c"<repo-install path='./heimdall.xar'/>" basex -c"<repo-list />" Name Version Type Path --------------------------------------------------------------------------- http://heimdall.huma-num.fr 2.1 EXPath http-heimdall.huma-num.fr-2.1 1 package(s). So I suppose the problem /might/ not be within the .xar itself, but the way it is hosted ? Maybe REPO INSTALL doesn't like my disturbing lack of SSL certificate ? I tried to search for some clue, but didn't find any clue in the documentation <https://docs.basex.org/wiki/Repository>. Maybe I'm blind, maybe that's not the problem at all. It's not exactly a blocking issue, but my noobiness regarding the basex ecosystem (and xquery in general) prevents me to understanding what happens, my README contains false info, and I'm not at ease with that. If someone had any intel, I'd be thankful. If needed, here is the repository : https://gitlab.huma-num.fr/datasphere/heimdall/xquery/ <https://gitlab.huma-num.fr/datasphere/heimdall/xquery/> And here is the corresponding issue (in French, sorry) : https://gitlab.huma-num.fr/datasphere/heimdall/xquery/-/issues/1 <https://gitlab.huma-num.fr/datasphere/heimdall/xquery/-/issues/1> Have a nice day, sunshine, flowers and all, Régis

4 3

some eq versus =
by Leo Studer 10 Apr '24

10 Apr '24

Hello are the following queries equivalent? 1. //city[some $city in following::city satisfies string(.) eq string($city)] 2. //city[. = following::city ] Thanks in advance, Leo

3 4

Single command expected
by Ветошкин Владимир 08 Apr '24

08 Apr '24

2 2

hof:until is gone?
by Graydon Saunders 28 Mar '24

28 Mar '24

Hello -- So I'm trying to do this: import module namespace xcs = "http://www.xcential.com/xquery/utils/script" at "same-words-same-order-script.xqm"; (: we don't need xc computationally but there are external variables in that namespace in scope :) import module namespace xc = "http://www.xcential.com/xquery/utils" at 'same-words-same-order.xqm'; declare function xc:dropTableLines($in as node()*,$toggle as xs:boolean) as node()* { switch (true()) case empty($in) return () case starts-with(head($in),':stab') return (<line/>,xc:dropTableLines(tail($in),true())) case starts-with(head($in),':rtab') return (<line/>,xc:dropTableLines(tail($in),false())) case $toggle return (<line/>,xc:dropTableLines(tail($in),$toggle)) default return (head($in),xc:dropTableLines(tail($in),$toggle)) }; let $test as element() := <text> <line></line> <line></line> <line>:stab</line> <line>weasels</line> <line>:stab</line> <line>weasels</line> <line></line> <line></line> <line>:rtab.</line> <line></line> <line>asparagus</line> <line></line> <line></line> <line>:stab</line> <line></line> <line>weasels</line> <line>:rtab.</line> <line>asparagus</line> <line>asparagus</line> <line>asparagus</line> <line>asparagus</line> <line>asparagus</line> <line>:stab</line> <line>:stab</line> <line></line> <line></line> <line>:stab</line> <line></line> <line>weasels</line> <line></line> <line>:rtab.</line> <line></line> <line>asparagus</line> <line></line> <line></line> <line></line> </text> return element {'text'} { xc:dropTableLines($test/line,false()) } Only at scale the stack blows up and I get the "try tail recursion?" suggestion. I would have tried hof:until for that, since I have to pass the current state of "are we dropping or not dropping intervening content?", but it looks like it's been removed? And the available hof functions in 4 look like they're strictly positional which is actively unhelpful in this case. (At least with whatever brain cells I currently have.) What's the appropriate pattern for "process a sequence, toggling an action on or off based on the last member of the sequence we looked at?" Thanks! Graydon

6 8

error Access Denied
by Synnott, Stephane 28 Mar '24

28 Mar '24

Hi, I have a C# .net application on my local machine, I have started the BaseX server and I want to use BaseX in my .Net application but as soon as I want to create a Session: Session session = new Session("localhost", 1984, "admin", "admin"); I also tried with no username and password but it is the same result. I get an "Access Denied". What am I missing? Thanks in advance, Stephane ________________________________ IMPORTANT NOTICE: This message may contain confidential or privileged information and is intended only for the individual named. If you are not the intended recipient you should not disseminate, distribute or copy this email. Please notify the sender immediately if you have received this email by mistake and delete it from your system. AVIS IMPORTANT: Le pr?sent courriel peut contenir des renseignements confidentiels ou privil?gi?s et est strictement r?serv? ? l'usage du destinataire pr?vu. Si vous n'?tes pas le destinataire pr?vu, vous ne devez pas diffuser, distribuer ou copier ce courriel. Veuillez aviser imm?diatement l'exp?diteur si vous avez re?u ce courriel par erreur et supprimez-le de votre syst?me. ________________________________

2 2

BaseX and NFS
by Marco Lettere 20 Mar '24

20 Mar '24

Dear all, we have an instance of BaseX running on top of an NFS exported disk. Yes yes I know it's not the best possible scenario thus I was expecting a slight performance decrease. Anyway, when comparing local disk to NFS disk, for a tiny operation like storing a very small document into a database (without optimize or indexes) we get orders of magnitude of difference. And I'm saying from few hundreds of ms to several seconds in some cases. Does anyone have experience with cases like these? Or a solid motivation that explains this degradation? Thank you very much as usual. Marco.

2 1

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