BaseX-Talk

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4 participants
5268 discussions

BaseX 9.1 behaviour of fn:trace
by Kittelmann, Maike 12 Nov '18

12 Nov '18

Dear fellow users, I updated to BaseX 9.1 and I observe an unexpected behaviour of fn:trace http://docs.basex.org/wiki/XQuery_3.1#fn:trace I inserted logging statements to give warnings in case important content is missing, like so: declare function local:my-function ( $id as xs:string?, $value as xs:string? ) as xs:string? { if ( $ value != '' ) then "foo" else trace( $id, 'No foo given for this record! ') } ; So far, the fn:trace output could be read in the Info window of BaseX. Now, the id-value of the above call to trace is ALSO output to the Result window. Even though the documentation states that the behaviour of trace is implementation-dependent, this behaviour seems unexpected and unhelpful. The extra output to result is hard to notice and destroys a possibly fully valid result file (the trace call is only a warning, there is not necessarily an actual error). 1. Is there anything wrong with my XQuery? 2. Why is trace behaving this way in BaseX 9.1? 3. How to best achieve the desired output? (Desired output is: result file unchanged and warning in Info window.) Thank you and best regards, MK

2 1

restxq
by Giuseppe G. A. Celano 11 Nov '18

11 Nov '18

I am trying to make a RESTXQ webservice I created with BaseX 8.3 available in Basex 9.2. I simply copied my "file.xqm" into the webapp folder but, when I type the path of a function contained in it, it does not work ("No function found that matches the request."). Strangely enough, when I minimally modify restxq.xqm, the modifications do not apply either. Any idea about what the problem might be? Thanks.

4 5

Issue with HTTP Server
by Shaun Flynn 09 Nov '18

09 Nov '18

Hello there, I am using BaseX 9.1, and Java version 8. When I use the basexhttp command, the server appears to start fine, but when I navigate to http:\\localhost:8984\rest, I get the following response below. What am I doing wrong? HTTP ERROR 500 Problem accessing /rest. Reason: Server Error Caused by: java.lang.NoSuchMethodError: org.basex.util.TokenBuilder.<init>(Ljava/lang/String;)V at org.basex.http.HTTPConnection.status(HTTPConnection.java:427) at org.basex.http.HTTPConnection.error(HTTPConnection.java:187) at org.basex.http.BaseXServlet.service(BaseXServlet.java:64) at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:857) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:535) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:146) at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:257) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1595) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1340) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:203) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:473) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1564) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:201) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1242) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:144) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132) at org.eclipse.jetty.server.Server.handle(Server.java:503) at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:364) at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:260) at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:305) at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103) at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:118) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:333) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:310) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:168) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:126) at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:366) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:765) at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:683) at java.lang.Thread.run(Unknown Source) ------------------------------ Powered by Jetty:// 9.4.12.v20180830 <http://eclipse.org/jetty> ------------------------------ <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_cam…> Virus-free. www.avg.com <http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_cam…> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>

2 1

getting the type of an arbitrary node
by Graydon Saunders 09 Nov '18

09 Nov '18

Hi! I am overcome with the cabbage-nature today, because I can't find this in the docs. I am convinced there's a way to go: (//some-element/node()) ! fn:node-type(.) and get a sequence of "element(),element(),text()..." but do not know what the actual function is called. (it's not node-type()!) How ought I to be approaching this? Thanks! Graydon

3 5

create db with options from command line
by Günter Dunz-Wolff 08 Nov '18

08 Nov '18

Hi all, I just set up my first basex-Server on DigitalOcean. So far, everything is working, but I have no experience, how I could create db with options on the command line, I always did it with the GUI. So how is the syntax for CREATE DB xxx /path with Options - CHOP no - Indices for Text, Attributes and Tokens - Fulltext-Index with Language German, Case Sensitive and Diacritics Thanks for any help. Guenter

2 3

Perceived performance of REST API
by Sebastian Zimmer 07 Nov '18

07 Nov '18

Hi, I'm looking for a way to increase the *perceived* performance of the REST API. On my web page there's a results list that is updated automatically when the text content of an input field is changed. This means that on each keystroke by the user, a GET request to the REST API api is sent to obtain the new results list. One GET request takes about 800 ms, which is acceptable to me given the complexity of the query and the amount of data. The problem is that when the user types faster than the queries are executed, the app starts to respond very slowly, because there are now several requests pending. BaseX seems to execute all of them in parallel and it may well take up to 14 seconds until it returns the results of the most recent search query. Is there a way to tell BaseX to abort running queries (by a specific user) to privilege the most recent query (of this user)? Could this be done with the Jobs module? Or is there a better way to implement such a search? Best regards, Sebastian -- Sebastian Zimmer sebastian.zimmer(a)uni-koeln.de <mailto:sebastian.zimmer@uni-koeln.de> Cologne Center for eHumanities <http://cceh.uni-koeln.de> DH Center at the University of Cologne @CCeHum <https://twitter.com/CCeHum>

3 3

BaseX 9.1 on Maven Repository?
by Han (US), Paul P 07 Nov '18

07 Nov '18

Hello, Do you when the latest BaseX 9.1 release will be available from Maven Repository (https://mvnrepository.com/artifact/org.basex/basex)? Regards, Paul

2 1

Re: [basex-talk] http-server error with version 9
by Günter Dunz-Wolff 07 Nov '18

07 Nov '18

You are wright. I’ve overseen a second WEB-INF Folder in BaseXWeb. Now with the new WEB-INF config files everything is running. Thanks a lot. > Am 06.11.2018 um 18:17 schrieb Christian Grün <christian.gruen(a)gmail.com>: > >> Then I changed the default .basex file from >> WEBPATH = /Users/gdw/basex/webapp >> to >> WEBPATH = /Users/xxx/Documents/kleist/BaseXWeb > > So I assume (see before..) that the jetty.xml and web.xml files from > your existing project need to be updated? Jetty 9 uses a different > configuration syntax, so you’ll need to compare the old and new > WEB-INF configuration files.

1 0

Programmatically extracting function signatures
by Bridger Dyson-Smith 07 Nov '18

07 Nov '18

Hi all - I was curious if there was a way to extract function signatures from BaseX. I'm currently reading through the (excellent) wiki but was curious if there was a more automated process I might be able to use. I've been trying to think of something clever with function-lookup, but I can't seem to make it dynamic based on module namespace; e.g. ``` for $fun in function-lookup(xs:QName("archive:delete"), 1) return $fun ``` I may just grab the wiki and parse it :), but I'm also interested in changes between versions of the processor. Any thoughts or suggestions would be greatly appreciated! Best, Bridger

4 7

Maybe interesting to you, Christian (et al)?
by Andreas Mixich 06 Nov '18

06 Nov '18

Hello Christian & Co., nothing BaseX related, and maybe totally uninteresting to you, but as it seems, you put some major efforts into the full text search, it could be one of those nerdy passions, where one is just hungry and wants more food on the topic: TRE: A Regex Engine with Approximate Matching / http://ducktape.blot.im/tre-a-regex-engine-with-approximate-matching -- Minden jót, all the best, Alles Gute, Andreas Mixich

1 0

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