BaseX-Talk

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9 participants
5241 discussions

Re: [basex-talk] mapping functions
by Imsieke, Gerrit, le-tex 17 Aug '23

17 Aug '23

Hi Graydon, Replying to the list for posterity. I hope you don’t mind. When you dynamically evaluate an expression (xquery:eval(), job:eval(), …), you start with the default values of the static context [1]. Nothing of the XQuery module from which you evaluate the expression is known (unless supplied by binding, but ordinary function declarations are not amenable to binding), therefore no risk of circularity. As stated in the table in [1], you can use module import [2] to augment this clean slate. In particular the module’s function declarations/signatures will be available then. If you don’t want the dynamically evaluated expression to import the whole module, you can store functions into variables and supply these variables to the evaluation through bindings. Haven’t tried it yet. Gerrit [1] https://www.w3.org/TR/xquery-31/#id-xq-static-context-components [2] https://www.w3.org/TR/xquery-31/#id-module-import On 16.08.2023 14:02, Graydon Saunders wrote: > Thank you for the specific example! > > I'm croggled that works without giving me a circular reference error of some kind, but it does work. > > Much appreciated! > > Graydon > > On Tue, Aug 15, 2023 at 11:34 PM <gerrit.imsieke(a)le-tex.de <mailto:gerrit.imsieke@le-tex.de>> wrote: > > You can import the library module in the evaluated expression. Example: https://github.com/transpect/control-backend/blob/main/webapp/control-backe… <https://github.com/transpect/control-backend/blob/main/webapp/control-backe…> > > Gerrit > > > Sent from MailDroid <https://goo.gl/ODgwBb> > > -----Original Message----- > From: Graydon Saunders <graydonish(a)gmail.com <mailto:graydonish@gmail.com>> > To: BaseX <BaseX-Talk(a)mailman.uni-konstanz.de <mailto:BaseX-Talk@mailman.uni-konstanz.de>> > Sent: Wed, 16 Aug 2023 4:42 > Subject: [basex-talk] mapping functions > > Hello -- > > I have various databases that will be run through the same code after their contents is regularized. So the only different function is the one used for regularization. > > This can be handled by writing a wrapper function and passing in a label to say which function to use, but I was wondering if there's a way to do it in the configuration map directly. The configuration map exists as a text file and gets run through xquery:eval() at the start of the process. > > declare namespace abc='http://some/uri <http://some/uri>'; > 'regularizationFunction': map { > 'typeOne': abc:regularizationOne#1, > 'typeTwo': abc:regularizationTwo#1 > } > > doesn't work, because the abc functions aren't known at evaluation time. These functions are defined in the library module that's evaluating the configuration file but xquery:eval() doesn't know that. I don't see a way to use bindings to get around this. > > Is there a way to map a locally-defined function reference so xquery:eval() will recognize it? > > thanks! > Graydon > > -- > Graydon Saunders | graydonish(a)fastmail.com <mailto:graydonish@fastmail.com> > Þæs oferéode, ðisses swá mæg. > -- Deor ("That passed, so may this.") > -- Gerrit Imsieke Geschäftsführer / Managing Director le-tex publishing services GmbH Weissenfelser Str. 84, 04229 Leipzig, Germany Phone +49 341 355356 110, Fax +49 341 355356 510 gerrit.imsieke(a)le-tex.de, http://www.le-tex.de Registergericht / Commercial Register: Amtsgericht Leipzig Registernummer / Registration Number: HRB 24930 Geschäftsführer / Managing Directors: Gerrit Imsieke, Svea Jelonek, Thomas Schmidt ---------------------------------------------- Besuchen Sie uns auf der Frankfurter Buchmesse in Halle 4.0, G94.

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Accessing BaseX server on remote machine
by Furst, Thomas 17 Aug '23

17 Aug '23

Hello, I am attempting to use BaseX from a central location on our network so that all team members can access it. I am using the Python Client to achieve this. Everything works fine when the host is entered as 'localhost'. Once I change it to the remote host name, I am getting a time out error reported back: TimeoutError: [WinError 10060] A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond On the remote machine (Windows 10 Pro for Workstations) I have opened port 1984 in the firewall on both the inbound and outbound. Can someone help me understand what I may be doing incorrectly? Or what I may have overlooked doing that is also required? Thank you, Tom Furst

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mapping functions
by Graydon Saunders 15 Aug '23

15 Aug '23

Hello -- I have various databases that will be run through the same code after their contents is regularized. So the only different function is the one used for regularization. This can be handled by writing a wrapper function and passing in a label to say which function to use, but I was wondering if there's a way to do it in the configuration map directly. The configuration map exists as a text file and gets run through xquery:eval() at the start of the process. declare namespace abc='http://some/uri'; 'regularizationFunction': map { 'typeOne': abc:regularizationOne#1, 'typeTwo': abc:regularizationTwo#1 } doesn't work, because the abc functions aren't known at evaluation time. These functions are defined in the library module that's evaluating the configuration file but xquery:eval() doesn't know that. I don't see a way to use bindings to get around this. Is there a way to map a locally-defined function reference so xquery:eval() will recognize it? thanks! Graydon -- Graydon Saunders | graydonish(a)fastmail.com Þæs oferéode, ðisses swá mæg. -- Deor ("That passed, so may this.")

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passing complex parameters to modules
by Graydon Saunders 13 Aug '23

13 Aug '23

Hello -- I've got a module full of functions. I've got two (and expect more) queries which import the function module. The queries have slightly different requirements; for example, in one case, it's necessary to use normalize-unicode() during a data regularization step, and in the other case it isn't. These differences are generally not at the top level of function that the query itself calls; they're usually a couple levels down in the function module. It doesn't look like the function module can have its own external variables; if it can, that'd be ideal. Otherwise, it seems like the thing to do is to have each query load a parameter map, but then I have to include that map as a parameter in all the functions calls in the function module, which feels inelegant. And I definitely don't want to start introducing a haze of individual values. Is there a better way to do this? It seems like I'm missing something. Thanks! Graydon -- Graydon Saunders | graydonish(a)fastmail.com Þæs oferéode, ðisses swá mæg. -- Deor ("That passed, so may this.")

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How best to cache an intermediate result in the context of a larger query?
by Eliot Kimber 10 Aug '23

10 Aug '23

In the context of a RESTXQ handler that is processing a stored document to generate HTML From it, I need to do some expensive processing and then cache the result for the next time the same document is rendered. It doesn’t make sense to preprocess all the documents to cache the data as part of my overall ingestion process because only a fraction of documents will ever be rendered by this page. I think the answer is to turn on MIXUPDATES so I can invoke an updating function in the process of the larger RESTXQ handling query, but I’m wondering if there’s some less drastic or better-architected approach? For example, should be I be invoking a separate REST end point to do the calculation, blocking on the request, and then fetch the cached result? I read through the update module and the various pages on XQuery update and feel like I still don’t quite understand what my updating options are. Thanks, Eliot _____________________________________________ Eliot Kimber Sr Staff Content Engineer O: 512 554 9368 M: 512 554 9368 servicenow.com<https://www.servicenow.com> LinkedIn<https://www.linkedin.com/company/servicenow> | Twitter<https://twitter.com/servicenow> | YouTube<https://www.youtube.com/user/servicenowinc> | Facebook<https://www.facebook.com/servicenow>

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BaseX 10.7: The Summer Edition
by Christian Grün 09 Aug '23

09 Aug '23

Dear all, We’re pleased to announce version 10.7 of BaseX, of our XML framework: https://basex.org. The new release is a big step forward towards BaseX 11: • We have added numerous new operators, functions and features of XQuery 4. • The GUI editor and result view now provide full support for Unicode characters. • Font rendering has been improved (you can tweak it in the Font Dialog) • More BaseX 11 preview features available (see docs.basex.org) • Various bug fixes (web:forward, job:eval, main-memory documents) Have fun, Your BaseX Team

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Re: [basex-talk] Problem with creating new database from GUI
by Christian Grün 08 Aug '23

08 Aug '23

Hi Andreas (cc to the list), Thanks for forwarding the error message, which indicates that removed »Text Parser« may have caused the problem [1]. Good to know it works again. Best, Christian [1] https://docs.basex.org/wiki/Parsers#Changelog On Mon, Aug 7, 2023 at 5:57 PM Andreas Hartmann <andreas.hartmann(a)gmx.org> wrote: > Hi Christian, > > > > in fact I installed BaseX from the .exe. I did now try the .jar and .zip > and those work without any problems. Then I did a clean reinstall with the > .exe and this seems to have fixed the problem. This is the first time I had > problems with installing a new version over an existing installation. > > > > For what it’s worth, when starting the jar-file from the .exe before the > reinstall and clicking on the icon I got in the command line: > > > > Exception in thread "AWT-EventQueue-0" > java.lang.ArrayIndexOutOfBoundsException: Index 3 out of bounds for length 3 > > at > org.basex.gui.dialog.DialogParsing.setType(DialogParsing.java:79) > > at org.basex.gui.dialog.DialogImport.action(DialogImport.java:165) > > at org.basex.gui.dialog.DialogNew.action(DialogNew.java:115) > > at org.basex.gui.dialog.DialogNew.<init>(DialogNew.java:105) > > at org.basex.gui.GUIMenuCmd$1.execute(GUIMenuCmd.java:40) > > at > org.basex.gui.layout.BaseXButton.lambda$command$2(BaseXButton.java:115) >

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Problem with creating new database from GUI
by Andreas Hartmann 07 Aug '23

07 Aug '23

Hello, since I updated to 10.7 I can no longer create a new database from the GUI. Neither clicking on the icon nor the shortcut CTRL+N cause the database creation window to open. Using the menu also has no effect. The other icons work normally. Thanks, Andreas

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Re: [basex-talk] BaseX 10.7: The Summer Edition
by Christian Grün 07 Aug '23

07 Aug '23

Hi Yitzhak, The documentation in our wiki will be made available with version 11, but you can already browse through the current drafts of the specifications. Many of the listed features are already working: https://qt4cg.org/specifications/xpath-functions-40/Overview.html#changelog https://qt4cg.org/specifications/xquery-40/xquery-40.html#id-revision-log Hope this helps, Christian On Sun, Aug 6, 2023 at 3:53 AM <ykhabins(a)bellsouth.net> wrote: > Congrats on the new BaseX 10.7 release! > > > > >> “We have added numerous new operators, functions and features of XQuery 4.“ > > How to find that new XQuery 4 functionality in the BaseX wiki? > > Is their a particular keyword for that? > > > > > > > *Regards,Yitzhak Khabinsky* > > >

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Webapp authentication flow – how do sessions work?
by Jack Steyn 03 Aug '23

03 Aug '23

Hi all, I'm trying to develop a single-page application in Vue where users can log in and out and have different levels of access. I've more or less cribbed the relevant authentication and permissions code from the DBA webapp (which is not single-page). When I test the API in a program like Postman or Insomnia, everything works as expected. However in the browser I can login successfully but I can't then access any RESTXQ functions which I haven't marked as public with the %perm:allow and %perm:check functions. The core problem is that I don't really understand how sessions work, but it seems like the session isn't persisting across requests that my Vue webapp is sending. Do I need to add something in my webapp code that is being handled automatically when I use the DBA webapp or my API testing software? Any advice would be greatly appreciated. Kind regards, Jack

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