BaseX-Talk

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6 participants
5265 discussions

Issue with request:parameter-map and repeated query parameters
by Tom De Herdt 15 Nov '25

15 Nov '25

Hello, I’ve encountered an issue with the new request:parameter-map function in BaseX. It throws an error when called with a query string that contains repeated parameters, such as ?a=1&a=2: [SERE0023] Value has more than one item. Is this behavior expected? As far as I know, query parameters may be repeated. For example, this can occur when submitting a form with checkboxes using the GET method. Additionally, JavaScript provides the URLSearchParams.getAll(<name>) method, which returns an array of values for a given parameter <name>. Wouldn't it be more logical for request:parameter-map to also return an array in such cases? I’ve tested this issue with BaseX 12 on Windows, using the following RESTXQ function: declare %rest:GET %rest:path("test") %output:method("json") function page:test() { request:parameter-map() }; Any insights are appreciated. Regards, Tom De Herdt

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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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Processing XInclude "On-Demand" in BaseX
by Josef Thorne 07 Nov '25

07 Nov '25

I was wondering how people are using XInclude in BaseX. Currently, if I load a document into BaseX, XInclude is processed on-load. What if I want to do inclusion "on-demand" in the database context? For example, if I have a template for a web page and wanted to use XInclude to grab something from the database and fill it in when you load the page. One could just use an xquery-based template in that particular example, but there are other cases where this is useful. It was not obvious to me reading the documentation how you're intended to do that, if it is possible. Thanks!

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BaseX fiddler is cutting off its Context pane
by Yitzhak Khabinsky 06 Nov '25

06 Nov '25

Hello, I am using BaseX fiddler: https://fiddle.basex.org/#/ And I love it. The fiddler recently got improved with the "Line Numbers" support for both panes: - XQuery - Context Unfortunately, the Context pane is cut off at the bottom If the XML sample is large enough, its end is invisible. Please fix it. Regards, Yitzhak Khabinsky

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remove type check?
by David Birnbaum 03 Nov '25

03 Nov '25

Dear BaseX-Talk, I notice in the BaseX GUI that when I execute an XQuery script that includes type checks (e.g., *let $x as element(stuff) := <stuff/>*) the compilation report tells me that BaseX removes the type checks. How should I understand this removal? I can see that BaseX is performing type-checking because if I specify the wrong type, an error is thrown. I'd be grateful for any insights anyone can provide about what the "remove type check" messages mean? Best, David

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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

2 4

XQuery version declarations and combinations
by Amanda Galtman 29 Sep '25

29 Sep '25

Hi, BaseX creators and users. I have several questions about XQuery versions: 1. The main documentation page [1] for BaseX 12.0 calls it an XQuery 4.0 processor. The XQuery 4.0 draft specification [2] says in section 5.1, "The XQuery 4.0 specification does not attempt to define the semantics of a query in which different modules use different version numbers. One approach is to process all modules as if they specified version "4.0". Another approach (which may be appropriate if modules are separately compiled) is to process each module using its own version number; but it is then implementation defined what happens if (say) a 3.1 module imports a 4.0 library module that declares a function with a signature that 3.1 does not recognize." The question is: What does BaseX do if a 3.0 main module imports a 1.0 library module? 2. That same section 5.1 says, "An XQuery 4.0 processor must accept a module in which the version number is given as "1.0", "3.0", or "3.1". It is then implementation defined whether the module is processed using the syntax and semantics of the XQuery 4.0 specification, or the rules of the relevant earlier version." What does BaseX do for pre-4.0 queries? 3. For the BaseX versions in the not-too-distant past that called themselves XQuery 3.1 processors, is the answer to question 2 analogous? (I don't see the same "processor must accept..." verbiage in the XQuery 3.1 specification [3], though.) 4. (Not BaseX-specific) If a main module declares version "1.0" and uses a post-1.0 feature like URI-qualified names, that's a bug in the module, right? Even if the main module imports a 1.0 module, and even if the processor doesn't complain about the post-1.0 feature usage? 5. (Not BaseX-specific) The 3.1 and 4.0 (draft) specifications explain the version declaration in terms of intent ("intent that the module be processed by an XQuery [...] processor"), which is a different criterion compared to stating the *minimum* XQuery version that would work for that module. If anyone on this list uses the "minimum" interpretation in practice, do you have any tips for efficiently determining the minimum required XQuery version for each module in a set of modules? The background behind my questions involves an XSpec test for an XQuery module, where the test gets compiled to a main module that imports the module you are testing. The main module uses features from 3.0, so I'm trying to determine the extent to which someone can test a 1.0 module using XSpec. Thanks, Amanda References: [1] https://docs.basex.org/main/Main_Page [2] https://qt4cg.org/specifications/xquery-40/xquery-40.html#id-version-declar… https://www.w3.org/TR/xquery-31/#id-version-declaration

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