January 2011 - BaseX-Talk - mailman.uni-konstanz.de

Out of memory bug
by Ivan Lagunov 31 Jul '13

31 Jul '13

Hello, I've got 'Out of memory' error and corrupted database again, this time it's for 6.3 version. Steps: 1. Started server, started terminal client, checked there are no text and attribute indexes. 2. Started my Java application that runs several tests on database: querying, adding, removing. 3. Then I forgot to reopen terminal client and used the one that I opened in Step 1. 4. Run optimize command for the collection and got error. 5. Cannot open the collection any more as I'm getting 'Out of memory'. It's clear that I shouldn't have used the terminal client that I opened before execution of my Java application. But sometimes it's hard to remember. And it's completely unacceptable that these actions result in the corrupted database. You really should catch ArrayIndexOutOfBoundsException everywhere in order to save database from being corrupted. Terminal client stacktrace: > optimize Possible bug? Feedback is welcome: basex-talk(a)mailman.uni-konstanz.de BaseX 6.3: java.lang.ArrayIndexOutOfBoundsException: -1 org.basex.data.PathSummary.add(PathSummary.java:68) org.basex.core.cmd.Optimize.stats(Optimize.java:68) org.basex.core.cmd.Optimize.run(Optimize.java:34) org.basex.core.Command.run(Command.java:236) org.basex.core.Command.exec(Command.java:218) org.basex.core.Command.execute(Command.java:66) org.basex.server.ServerProcess.run(ServerProcess.java:161) > open products Out of Main Memory. Best regards, Ivan

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deadlock in BaseXServer 6.2.7
by Godmar Back 23 Jun '12

23 Jun '12

Hi, we're observing that our BaseXServer 6.2.7 deadlocks. The stack traces are here: http://top.cs.vt.edu/~gback/bx/deadlock-6.2.7/basex-deadlock.txt Could you take a look to see if these ring any bells? Has this problem been addressed in a more recent version? - Godmar

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Problems in using BaseX REST server - IncompatibleClassChangeError javax.ws.rs.core.Response$Status does not implement the requested interface
by Pushkaraj Thorat 21 Oct '11

21 Oct '11

Hello, I am doing setup for REST enabled basex database with procedure mentioned in http://docs.basex.org/wiki/JAX-RX_API URL. Configuring & starting server and running failed due to class not found, but later I've modified the ./basexrest script as: (Included all the jars in lib folder) ######START #!/bin/bash # Path to this script PWD=`dirname $0` # Paths to distributed files or source directories BASEX=$PWD/BaseX.jar BASEXAPI=$PWD/../lib/basex-api.jar # Classpath LIB=$PWD/../lib LIB_CP="" for JAR_FILE in $LIB/*.jar do LIB_CP="$LIB/$JAR_FILE:$LIB_CP" done CP=$BASEX:$BASEXAPI:$LIB_CP # Options for virtual machine VM=-Xmx1g # Run REST server java -cp "$CP" $VM org.basex.api.jaxrx.JaxRxServer "$@" ######END after this, server started successfully, hit the URL - http://localhost:8984/basex/jax-rx I am getting following exception: java.lang.IncompatibleClassChangeError: Class javax.ws.rs.core.Response$Status does not implement the requested interface javax.ws.rs.core.Response$StatusType at com.sun.jersey.spi.container.ContainerResponse.getStatus(ContainerResponse.java:548) at com.sun.jersey.spi.container.ContainerResponse$CommittingOutputStream.commitWrite(ContainerResponse.java:156) at com.sun.jersey.spi.container.ContainerResponse$CommittingOutputStream.write(ContainerResponse.java:133) at org.basex.io.BufferedOutput.flush(BufferedOutput.java:50) at org.basex.io.PrintOutput.flush(PrintOutput.java:126) at org.basex.data.XMLSerializer.cls(XMLSerializer.java:206) at org.basex.data.Serializer.close(Serializer.java:219) at org.basex.api.jaxrx.BXJaxRx$1.code(BXJaxRx.java:96) at org.basex.api.jaxrx.BXCode.run(BXCode.java:53) at org.basex.api.jaxrx.BXOutput.write(BXOutput.java:53) at com.sun.jersey.core.impl.provider.entity.StreamingOutputProvider.writeTo(StreamingOutputProvider.java:71) at com.sun.jersey.core.impl.provider.entity.StreamingOutputProvider.writeTo(StreamingOutputProvider.java:57) at com.sun.jersey.spi.container.ContainerResponse.write(ContainerResponse.java:299) Your help is appreciated. Thanks, Pushkaraj

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Options to generate JSON file
by Jan Vlčinský (CAD) 26 Feb '11

26 Feb '11

Hi I shall export JSON file based on XML structures I have in my XQuery. Here I found http://demo.exist-db.org/xquery/json-test.xql/source sample, how eXistDB can produce JSON data. It is like import module namespace json="http://www.json.org"; 04. 05.declare option exist:serialize "method=xhtml media-type=text/html"; let $xml1 := 08.<root> 09.<h1>H</h1> 10.<p/> 11.<p>some text</p> 12.<h2>HH</h2> 13.</root> <script type="text/javascript"> 43.var data1 = {json:xml-to-json($xml1)}; BaseX does not provide this and I wonder, what options I have and what would anyone recommend 1. building up plain text piece by piece by XQuery 2. using some Java lib for this (there are more, any practical experience welcome) 3. Some other trick, which lives hidden to me (I already queried BaseX wiki and no hit) Jan -- *Ing. Jan Vlčinský* CAD programy Slunečnicová 338/3, 734 01 Karviná Ráj, Czech Republic tel: +420-597 602 024; mob: +420-608 979 040 skype: janvlcinsky; GoogleTalk: jan.vlcinsky(a)gmail.com http://cz.linkedin.com/in/vlcinsky

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Infrastructure improvements
by NewIntellectual 18 Feb '11

18 Feb '11

Given the well deserved growth of BaseX, I was wondering if there are plans to improve bug/feature tracking capability, as well as the discussion system. For the first, I have used the popular JIRA system ( http://www.atlassian.com/) While I think it could use improvements, it's pretty powerful and I think it would be better than what exists now. They say that it's free to use for open source projects. I have found the GNU mailing list system to be cumbersome to use, since it is all email based, and the archives are not automatically searchable, nor grouped in any way by subject. There are a number of free discussion board systems, including at least one based on Java, and I think that would be a big improvement. I would be willing to help out with a transition to better tools if there is interest.

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Wish - allow using clipboard also for shift+Delete control+Insert shift+Insert
by Jan Vlčinský (CAD) 14 Feb '11

14 Feb '11

Hi Working in GUI is nice, I only like using shift+Delete control+Insert shift+Insert shortcuts for working with clipboard and currently it does not work in XQuery window in BaseX GUI See http://en.wikipedia.org/wiki/Cut,_copy,_and_paste#Common_keyboard_shortcuts I am working on MS Windows. You see, I do care about your wish list not to let it empty for too long time "-). Best reagards Jan Vlčinský -- *Ing. Jan Vlčinský* CAD programy Slunečnicová 338/3, 734 01 Karviná Ráj, Czech Republic tel: +420-597 602 024; mob: +420-608 979 040 skype: janvlcinsky; GoogleTalk: jan.vlcinsky(a)gmail.com http://cz.linkedin.com/in/vlcinsky

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Is there a way to not wrap results in jax-rx:results and jax-rx:result
by software developer 08 Feb '11

08 Feb '11

Hi, Since the queries to a collection over REST typically result in XML being returned, is there a way to turn off the wrapping of results in jax-rx:results and jax-rx;result elements? Thanks.

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Questions concerning backups
by Fabrice Etanchaud 31 Jan '11

31 Jan '11

Dear all at DBIS, the SHOW BACKUPS command does not seem to work. Is there a way to choose which backup to restore ? best regards, Fabrice Etanchaud Senior Software Engineer CT Corsearch / Edital, a Wolters Kluwer business Berkenlaan 1 1831 Diegem Belgium <skype:fabrice.etanchaud?call> skype:fabrice.etanchaud Get Skype <http://www.skype.com/go/download> and call me for free. fetanchaud(a)edital.com <mailto:fetanchaud@edital.com> <http://www.edital.com/> www.edital.com (website) <http://www.ctcorsearch.com/> www.ctcorsearch.com (website) Confidentiality Notice: This email and its attachments (if any) contain confidential information of the sender. The information is intended only for the use by the direct addressees of the original sender of this email. If you are not an intended recipient of the original sender (or responsible for delivering the message to such person), you are hereby notified that any review, disclosure, copying, distribution or the taking of any action in reliance of the contents of and attachments to this email is strictly prohibited. If you have received this email in error, please immediately notify the sender at the address shown herein and permanently delete any copies of this email (digital or paper) in your possession.

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BaseX 6.5.1 - BaseXGUI - error in Manage/Restore when database name contains hyphens
by Fabrice Etanchaud 31 Jan '11

31 Jan '11

Dear all, It seems there is an error in the BaseXGUI/Manage/Restore menu when restoring a dabase whose name contains hyphens. Changing hyphens to underscores solves the problem. Maybe because hyphen was chosen as information separator in the backup filename (mydbname-2011-01-31-11-54-20.zip). best regards, Fabrice Etanchaud Senior Software Engineer CT Corsearch / Edital, a Wolters Kluwer business Berkenlaan 1 1831 Diegem Belgium <skype:fabrice.etanchaud?call> skype:fabrice.etanchaud Get Skype <http://www.skype.com/go/download> and call me for free. fetanchaud(a)edital.com <mailto:fetanchaud@edital.com> <http://www.edital.com/> www.edital.com (website) <http://www.ctcorsearch.com/> www.ctcorsearch.com (website) Confidentiality Notice: This email and its attachments (if any) contain confidential information of the sender. The information is intended only for the use by the direct addressees of the original sender of this email. If you are not an intended recipient of the original sender (or responsible for delivering the message to such person), you are hereby notified that any review, disclosure, copying, distribution or the taking of any action in reliance of the contents of and attachments to this email is strictly prohibited. If you have received this email in error, please immediately notify the sender at the address shown herein and permanently delete any copies of this email (digital or paper) in your possession.

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Problems using Python API and resolution (RuntimeError: maximum recursion depth exceeded)
by Jan Vlčinský (CAD) 31 Jan '11

31 Jan '11

Hi I was trying to use new Python API, looking forward to use binding variables, but all my calls were failing File "D:\var\projects\BaseXFilter\TomTom\BaseXClient.py", line 96, in receive return self.receive() File "D:\var\projects\BaseXFilter\TomTom\BaseXClient.py", line 96, in receive return self.receive() File "D:\var\projects\BaseXFilter\TomTom\BaseXClient.py", line 96, in receive return self.receive() File "D:\var\projects\BaseXFilter\TomTom\BaseXClient.py", line 96, in receive return self.receive() File "D:\var\projects\BaseXFilter\TomTom\BaseXClient.py", line 95, in receive self.init() RuntimeError: maximum recursion depth exceeded I compared old and new version of BaseXClient.py and noticed, that old calls readString() were changed to receive() And on line 96 is call to self.receive() inside of class method receive() so never ending call is here. Renaming receive call to readString as it used to be resolved the problem. Attached is corrected Python file. If you want to call it as usual, you shall rename it to BaseXClient.py Jan -- *Ing. Jan Vlčinský* CAD programy Slunečnicová 338/3, 734 01 Karviná Ráj, Czech Republic tel: +420-597 602 024; mob: +420-608 979 040 skype: janvlcinsky; GoogleTalk: jan.vlcinsky(a)gmail.com http://cz.linkedin.com/in/vlcinsky

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