BaseX-Talk May 2025

basex-talk@mailman.uni-konstanz.de

13 participants
16 discussions

Property 'http://www.oracle.com/xml/jaxp/properties/entityExpansionLimit' is not recognized
by ykhabins＠bellsouth.net 04 Jul '25

04 Jul '25

Hello, Congrats on the BaseX 11.9 release! Installed it, and started to run my XQuery tests. Right away I got the following error: "Property 'http://www.oracle.com/xml/jaxp/properties/entityExpansionLimit' is not recognized." Both doc() and collection() are tripping on it. A full repro is below. XQuery #1 ============================================= declare variable $base_dir as xs:string := 'e:\Temp\'; for $docx in collection($base_dir) return $docx XQuery #2 ============================================= declare variable $base_dir as xs:string := 'e:\Temp\'; for $file in file:list($base_dir, false(), 'books*.xml') let $docx := doc($base_dir || $file) return $docx Regards, Yitzhak Khabinsky

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unexpected results in typecasting functionresult
by Rob Stapper 26 May '25

26 May '25

Christian, I encountered some unexpected behavior with the typecasting of functionresult. it is about the "?" in line 4 of both snippets. [expectedResult.xq], the snippet with the " ?" gives the expected result. [unexpectedResult.xq], the snipped without the "?" , gives an unexpected result. Is this a correct observation or am I missing something? mvgr. Rob Stapper

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BaseX GUI create dialog differences from db:create()?
by Graydon Saunders 25 May '25

25 May '25

Hello and happy Friday -- I'm using BaseX 11.9. I have a processing chain of queries that takes some XHTML documents and loads them into a DB. Another query reads that DB, merges the documents, and writes the merged version to disk. From the disk copy, I create a DB of the merged content, and run another query to update that. (Changing the image references.) I then I use another query to write the updated DB back out to disk. If I create the DB of the merged content with the BaseX GUI "new database" dialog, everything works. If I create the DB of the merged content using db:create('mergedChapters', file:children($mergedDir), (), map { 'ftindex': true(), 'casesens': true(), 'createfilter': '*.html' }) I get a database and I can use db:get() to query it; for example, db:get('mergedChapters')//*:img from a GUI editor window gives me the expected result. (I also get the expected "you can't do that" error if I make the DB the context DB and attempt to run the "load the merged version" query again.) When I try to run the "update the image references" query (also from a GUI editor window, and also using db:get() to access the DB) after creating the mergedChapters dB from XQuery, it does NOT work. So far as I can tell, it doesn't alter the DB at all. I'm very sure I'm using the same database name; it's been copied out of the update-the-image-references query. I don't see an option to make the db changeable in the db:create() options. Any suggestions? Thanks! Graydon

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restxq versus websockets
by Rob Stapper 23 May '25

23 May '25

Christian, if I may ask another question? I have this very interactive client-server application( a web based data-editer). I now use the RESTXQ protocol. I'm wondering if in this scenario a websocket connection would be more efficient and therefor faster? mvgr. Rob Stapper

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preventing tranforming empty element with begin- and endtag to self-closing-tag
by Rob Stapper 23 May '25

23 May '25

Hi Christian, Basex seems to transform 'begin-/endtagged' element with empty content to a single self-closing-tagged element: <div></div> is transformed to: </div> This gives problems in my client application. Both in Chrome, Edge and Firefox transforms Javascript's "insertAdjacentHTML": <div> <div/> <div>tekst</div> <div>tekst</div> </div> to: <div> <div> <div>tekst</div> <div>tekst</div> </div> </div> This is not what is intended. I guess for void-elements this transformation is ok but result in problems like this in case of container-elements. Is it possible in Basex to suppress this transformation? mvgr. Rob Stapper

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Fwd: Re: functionParameterTyping issue
by Rob Stapper 20 May '25

20 May '25

Hi Christian, Good news, I hope. The problem with the dynamic typecasting is not as much a typecasting-issue but an issue with recognizing derived functions. The problem is that derived functions are treated as functioncalls where it shouldn't. I can remenber that once there was an issue with the parity of derived functions. It is something like that. attached some demos: [referentialDemo.xq] shows that dynamic and strict typing works within version-11.9 [buggyDemo.xq] shows that dynamic and strict typing fails in case of derived functions. [workingDemo,xq] show the workaround. Thought you would like to know what the issue is. Rob > ---------- Oorspronkelijk Bericht ---------- > Van: Rob Stapper <r.stapper(a)lijbrandt.nl> > Aan: Christian Grün <christian.gruen(a)gmail.com> > Datum: 14-05-2025 18:43 CEST > Onderwerp: Re: [basex-talk] functionParameterTyping issue > > > >>As can be seen, case "a" can never work if $p is a string. > correct, the error triggered by the system when calling this function is part of the validation mechanisme. Once correctly validated the data wil be stored as XML and wil be garanteed to be a string (in this case). It is not a hidden dependency as such but a managed dependency. > > Thanx for your time, > Rob > > > Op 14-05-2025 18:01 CEST schreef Christian Grün <christian.gruen(a)gmail.com>: > > > > > > > > > It is more like: > > > let $n := "b" > > > let $p := "test" > > > return switch($n) > > > case "a" return fn( $n, $p as map(*) ) { }( ?, $p) > > > case "b" return fn( $n, $p as xs:string ) { }( ?, $p) > > > default return () > > > > > > > As can be seen, case "a" can never work if $p is a string. If there is a (hidden) dependency in the semantics in your code that $p will always be a map if $n is "a", it is something the complete cannot »guess«. In those cases, it is better to omit type declarations in your code. The reason is that the optimizer will also rewrite and simplify those parts of your code that may not be evaluated at runtime. > > > > Hope this helps, > > Christian > > > > > > > > > > > > > > > mvgr. > > Rob Stapper > mvgr. Rob Stapper

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11.9 doc() not working with DOCTYPE declaration
by Graydon Saunders 15 May '25

15 May '25

Hello -- I'm on linux, using 11.9 and using 20:59 graydon % java -version openjdk version "21.0.7" 2025-04-15 OpenJDK Runtime Environment (Red_Hat-21.0.7.0.6-1) (build 21.0.7+6) OpenJDK 64-Bit Server VM (Red_Hat-21.0.7.0.6-1) (build 21.0.7+6, mixed mode, sharing) If I use the basexgui "Create DB" dialog and the internal parser, I can load the whole folder without error; I get the expected DB and the named entities in the content have been resolved. (These are effectively HTML 4 entity names, so that's not completely guaranteeing that the DTD in the DOCTYPE is being found and parsed somewhere.) If I use the doc() function with an absolute file system path to one of the same files that loaded into the DB just fine, I get an error. I get the same error if I try to switch off the internal parser and set a catalog. It's at least several files in the folder that loads fine as a DB. All of this works fine with 11.8; whatever changed changed in 11.9. The error is: Could not execute XQUERY doc('/home/graydon/GeneralCode/git/cpc-conversion/Chapter/BU4372-14A.xml'): Improper use? Potential bug? Your feedback is welcome: Contact: basex-talk(a)mailman.uni-konstanz.de Version: BaseX 11.9 Java: Red Hat, Inc., 21.0.7 OS: Linux, amd64 Stack Trace: javax.xml.catalog.CatalogException: JAXP09040002: No match found for href '/home/graydon/GeneralCode/git/cpc-conversion/Chapter/BU4372-14A.xml' and base '/home/graydon/GeneralCode/git/cpc-conversion/xquery/file'. at java.xml/javax.xml.catalog.CatalogMessages.reportError(CatalogMessages.java:74) at java.xml/javax.xml.catalog.CatalogResolverImpl.resolve(CatalogResolverImpl.java:153) at org.basex.query.StaticContext.resolve(StaticContext.java:156) at org.basex.query.StaticContext.resolve(StaticContext.java:137) at org.basex.query.QueryInput.<init>(QueryInput.java:31) at org.basex.query.func.fn.Docs.queryInput(Docs.java:37) at org.basex.query.func.fn.Docs.lambda$accept$0(Docs.java:67) at org.basex.query.scope.LockVisitor.lock(LockVisitor.java:48) at org.basex.query.func.fn.Docs.accept(Docs.java:56) at org.basex.query.scope.MainModule.databases(MainModule.java:93) at org.basex.query.QueryContext.addLocks(QueryContext.java:412) at org.basex.query.QueryProcessor.addLocks(QueryProcessor.java:230) at org.basex.core.cmd.AQuery.addLocks(AQuery.java:170) at org.basex.core.locks.Locking.acquire(Locking.java:86) at org.basex.core.jobs.Job.register(Job.java:48) at org.basex.core.Command.execute(Command.java:90) at org.basex.gui.GUI.execute(GUI.java:430) at org.basex.gui.GUI.lambda$execute$5(GUI.java:375) at java.base/java.lang.Thread.run(Thread.java:1583) I can go on using 11.8 for now, so this is only somewhat alarming rather than completely alarming. -- Graydon

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xqj-api library
by Lyn Elisa Goltz 14 May '25

14 May '25

Hi all, BaseX is an excellent tool, and we are interested in integrating its API into our open-source project. Our project is licensed under the AGPL-3.0, and we want to ensure license compatibility with all the libraries we use. Unfortunately, BaseX depends on the xqj-api library, for which neither a license nor source code appears to be available. The main concern, therefore, is the unclear provenance of this dependency. Could you please provide the license information or the source code for this library? Best regards, Lyn -- l a t / l o n GmbH Im Ellig 1 53343 Wachtberg, Germany phone ++49 +228 24 333 784 http://www.lat-lon.de http://www.deegree.org lat/lon gesellschaft für raumbezogene informationssysteme mbH Registergericht: Amtsgericht Bonn, HRB 13042 Geschäftsführer: Jens Fitzke und Torsten Friebe

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functionParameterTyping issue
by Rob Stapper 13 May '25

13 May '25

Hi Christian, With version 11.9 I have a problem with my application. Consider the attached app. Runs in previous versions but not anymore in version 11.9. Yours thoughts on this one? mvgr. Rob Stapper

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Database with data on disk shows 0 documents, throws error on optimize all
by Omar Siam 12 May '25

12 May '25

Hi! We had some serious problems with our storage last week and unfortunately that killed one of our important BaseX databases. Is there any way to restore the data? Does BaseX GmbH provide paid data rescue services? The symptoms are: There is data in that database: Mode LastWriteTime Length Name ---- ------------- ------ ---- -a--- 12.05.2025 13:16 25214377 atv.basex -a--- 12.05.2025 13:16 451580 atvl.basex -a--- 12.05.2025 13:16 106065 atvr.basex -a--- 12.05.2025 13:16 131 ftxx.basex -a--- 12.05.2025 13:16 449615 ftxy.basex -a--- 12.05.2025 13:16 697581 ftxz.basex -a--- 12.05.2025 13:59 319 inf.basex -a--- 12.05.2025 13:16 39 pth.basex -a--- 12.05.2025 13:16 28 swl.basex -a--- 12.05.2025 13:16 29798400 tbl.basex -a--- 12.05.2025 13:16 23650 tbli.basex -a--- 12.05.2025 13:16 693232 tokl.basex -a--- 12.05.2025 13:16 105495 tokr.basex -a--- 12.05.2025 13:16 53480811 txt.basex -a--- 12.05.2025 13:16 669153 txtl.basex -a--- 12.05.2025 13:16 166050 txtr.basex -a--- 12.05.2025 13:59 0 upd.basex Inspect reports 0 documents. Checking main table (0 nodes): - 0 invalid node kinds - 0 invalid parent references - 0 wrong parent/descendant relationships No inconsistencies found. 'dc_shawi_eng_000' inspected in 0.63 ms. Optimize all yields: Improper use? Potential bug? Your feedback is welcome: Contact: basex-talk(a)mailman.uni-konstanz.de Version: BaseX 9.3.2 Java: Azul Systems, Inc., 21.0.4 OS: Windows 11, amd64 Stack Trace: java.lang.NullPointerException: Cannot invoke "org.basex.index.path.PathIndex.write(org.basex.io.out.DataOutput)" because "this.paths" is null at org.basex.data.DiskData.write(DiskData.java:144) at org.basex.data.DiskData.close(DiskData.java:160) at org.basex.core.Datas.unpin(Datas.java:52) at org.basex.core.cmd.Close.close(Close.java:45) at org.basex.core.cmd.OptimizeAll.optimizeAll(OptimizeAll.java:126) at org.basex.core.cmd.OptimizeAll$1.run(OptimizeAll.java:42) at org.basex.core.cmd.ACreate.update(ACreate.java:90) at org.basex.core.cmd.OptimizeAll.run(OptimizeAll.java:38) at org.basex.core.Command.run(Command.java:257) at org.basex.core.Command.execute(Command.java:93) at org.basex.api.client.LocalSession.execute(LocalSession.java:132) at org.basex.api.client.Session.execute(Session.java:36) at org.basex.core.CLI.execute(CLI.java:92) at org.basex.core.CLI.execute(CLI.java:76) at org.basex.BaseX.console(BaseX.java:177) at org.basex.BaseX.<init>(BaseX.java:152) at org.basex.BaseX.main(BaseX.java:43) Best regards -- Mag. Ing. Omar Siam Austrian Center for Digital Humanities and Cultural Heritage Österreichische Akademie der Wissenschaften | Austrian Academy of Sciences Stellvertretende Behindertenvertrauensperson | Deputy representative for disabled persons Bäckerstraße 13, 1010 Wien, Österreich | Vienna, Austria T: +43 1 51581-7295 omar.siam(a)oeaw.ac.at | www.oeaw.ac.at/acdh

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BaseX-Talk May 2025