BaseX-Talk October 2025

basex-talk@mailman.uni-konstanz.de

6 participants
5 discussions

load-xquery-module
by Rob Stapper 11 Nov '25

11 Nov '25

Hi Christian, I'm experimenting with dynamic modul loading using: 'load-xquery-module'. I have a few questions concerning this function: - Does this function cache the loaded modul like "import module" does? If I interpret the profiling data correcty, it does not. If so is it possible to also cache dynamicly loaded modules? - "location-hints" of this function accepts a set of locations. It seems that all these locations must contain a module with the given modul-uri. I would expect the one would be sufficient. What is the idea behind this locationset? Thanx in advance for your response. mvgr. Rob Stapper

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Invisible XML doesn't accept lazy strings
by Josef Thorne 03 Nov '25

03 Nov '25

It seems that the invisible XML function can't accept a lazy string. It causes it to have a casting exception. A workaround I found is to serialize the lazy string before passing it to the function with fn:serialize's text method. > > let $grammar := file:read-text("basex/data/lcl_grammar.ixml") return fn:invisible-xml($grammar) Full stack trace: Version: BaseX 11.8 Java: Ubuntu, 21.0.8 OS: Linux, amd64 Stack Trace: java.lang.ClassCastException: class org.basex.query.value.item.StrLazy cannot be cast to class org.basex.query.value.item.Str (org.basex.query.value.item.StrLazy and org.basex.query.value.item.Str are in unnamed module of loader 'app') at org.basex.query.func.fn.FnInvisibleXml$Generator.generate(FnInvisibleXml.java:72) at org.basex.query.func.fn.FnInvisibleXml.item(FnInvisibleXml.java:51) at org.basex.query.func.fn.FnInvisibleXml.item(FnInvisibleXml.java:32) at org.basex.query.expr.ParseExpr.value(ParseExpr.java:54) at org.basex.query.expr.ParseExpr.iter(ParseExpr.java:49) at org.basex.query.expr.Pipeline$1.next(Pipeline.java:66) at org.basex.query.scope.MainModule$1.next(MainModule.java:65) at org.basex.query.QueryContext.next(QueryContext.java:387) at org.basex.query.QueryContext.lambda$cache$6(QueryContext.java:599) at org.basex.query.QueryContext.run(QueryContext.java:738) at org.basex.query.QueryContext.cache(QueryContext.java:579) at org.basex.query.QueryProcessor.cache(QueryProcessor.java:120) at org.basex.core.cmd.AQuery.run(AQuery.java:82) at org.basex.core.Command.run(Command.java:233) at org.basex.core.Command.execute(Command.java:93) at org.basex.gui.GUI.execute(GUI.java:430) at org.basex.gui.GUI.lambda$execute$5(GUI.java:375) at java.base/java.lang.Thread.run(Thread.java:1583)

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AUR package build error: missing 'img/logo_256.png' in PKGBUILD for BaseX
by Christian Davidson 21 Oct '25

21 Oct '25

Hi BaseX team, I am writing to report a possible bug for the AUR package of BaseX. For context, my environment is Omarchy/Arch Linux, and the command I am invoking is 'yay -S basex'. Error: install: cannot stat 'img/logo_256.png': No such file or directory ==> ERROR: A failure occurred in package(). Aborting... -> error making: basex-exit status 4 -> Failed to install the following packages. Manual intervention is required: basex - exit status 4 Investigation: Looking on the upstream GitHub source I couldn't find any 'logo_256.png' file. Please let me know if I can provide any more info to help address this error. Thank you for reviewing my issue. - Christian

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Unexpected behaviour
by Guillaume Porte 20 Oct '25

20 Oct '25

Hi, Yesterday I tried to install from the beginnig a working basex environnement on another repertory, just to do some tests. BaseX has been installed form the zip. After adding additionnal repos, this error occured on the new install with basexhttp on. After stopping it, I launched the older install to verify what was going wrong, and now the same error occurs on this one too. I am not very familiar with java, do you know what could posssibly be wrong here ? Regards Guillaume --- Unexpected error: Improper use? Potential bug? Your feedback is welcome: Contact: basex-talk(a)mailman.uni-konstanz.de Version: BaseX 10.7 Java: Debian, 17.0.16 OS: Linux, amd64 Stack Trace: java.lang.NullPointerException: Cannot invoke "java.util.Vector.size()" because "vars" is null at org.apache.xalan.transformer.TransformerImpl.setParameter(TransformerImpl.java:1558) at org.apache.xalan.transformer.TransformerImpl.setParameter(TransformerImpl.java:1606) at java.base/java.util.HashMap.forEach(HashMap.java:1421) at org.basex.query.func.xslt.XsltTransform.transform(XsltTransform.java:87) at org.basex.query.func.xslt.XsltTransform.item(XsltTransform.java:41) at org.basex.query.expr.ItemMap.item(ItemMap.java:36) at org.basex.query.expr.ParseExpr.value(ParseExpr.java:51) at org.basex.query.expr.gflwor.GFLWOR.value(GFLWOR.java:92) at org.basex.query.expr.List.value(List.java:226) at org.basex.query.func.StaticFunc.invokeInternal(StaticFunc.java:167) at org.basex.query.func.XQFunction.invoke(XQFunction.java:33) at org.basex.query.func.FuncCall.value(FuncCall.java:54) at org.basex.query.expr.gflwor.Let$LetEval.next(Let.java:146) at org.basex.query.expr.gflwor.GFLWOR.value(GFLWOR.java:92) at org.basex.query.expr.Try.value(Try.java:93) at org.basex.query.expr.TypeCheck.value(TypeCheck.java:167) at org.basex.query.expr.ParseExpr.item(ParseExpr.java:56) at org.basex.query.expr.ItemMap.item(ItemMap.java:36) at org.basex.query.expr.ParseExpr.value(ParseExpr.java:51) at org.basex.query.expr.ParseExpr.iter(ParseExpr.java:46) at org.basex.query.scope.MainModule.iter(MainModule.java:48) at org.basex.query.QueryContext.lambda$iter$4(QueryContext.java:357) at org.basex.query.QueryContext.run(QueryContext.java:766) at org.basex.query.QueryContext.iter(QueryContext.java:357) at org.basex.http.restxq.RestXqResponse.serialize(RestXqResponse.java:78) at org.basex.http.web.WebResponse.create(WebResponse.java:58) at org.basex.http.restxq.RestXqServlet.run(RestXqServlet.java:72) at org.basex.http.BaseXServlet.service(BaseXServlet.java:69) at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) at org.eclipse.jetty.servlet.ServletHolder$NotAsync.service(ServletHolder.java:1450) at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:799) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:554) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143) at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:600) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:235) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1624) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1440) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:505) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1594) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1355) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127) at org.eclipse.jetty.server.Server.handle(Server.java:516) at org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:487) at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:732) at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:479) at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:277) at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311) at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105) at org.eclipse.jetty.io.ChannelEndPoint$1.run(ChannelEndPoint.java:104) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:883) at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1034) at java.base/java.lang.Thread.run(Thread.java:840)

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BaseX standalone with multiple catalog files
by Amanda Galtman 06 Oct '25

06 Oct '25

Hi, all. Does someone have a syntax example for using multiple catalogs with BaseX v12.0 standalone on Windows? The Options page in the BaseX documentation says CATALOG can be a semicolon-separated list of files, so I tried the following, where both catalog files are in my working directory: %BASEX120%\bin\basex -OCATALOG="catalog1.xml;catalog2.xml" -q"doc('mycat1:/document.xml')" java -cp "%BASEX120%\BaseX.jar" -Dorg.basex.CATALOG="catalog1.xml;catalog2.xml" org.basex.BaseX -q"doc('mycat1:/document.xml')" The error messages suggest that the catalogs are not being used. I also tried several syntax variations without success. Both syntaxes above work fine if I specify only one catalog instead of a semicolon-separated list. For the record, the catalog1.xml file in my example commands is as below, and my document.xml file is in a subdirectory named "docs". <catalog xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog"> <rewriteURI rewritePrefix="./docs/" uriStartString="mycat1:/" /> </catalog> Thanks, Amanda

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BaseX-Talk October 2025